updated 2021-09
Contents (Families):
1. CEV
M11-0.75↑ M10-1.0↓ threads
square holes 2.0↑ 2.0↓ on Cimatti, Vespa (some), others
square holes 1.8↑ 2.0↓ on some Italian mopeds
square holes 2.0↑ 2.7↓ on some Italian motorcycles
2. Tomos
M11-0.75↑ M10-1.00↓ threads
square holes 2.0↑ 1.8↓ on ’74-02 Tomos
M10-1.00↑ M10-1.00↓ threads
square holes 1.8↑ 1.8↓ on ’03-18 Tomos
M10-1.00↑ M12-1.00↓ threads
square holes 1.8↑ 2.7↓ on ’05-09 Tomos Arrow
3. VDO
M10-1.00↑ M10-1.00↓ threads
square holes 1.8↑ 1.8↓ on Puch, others
square holes 2.0↑ 1.8↓ on ’86-89 Derbi Variant Sport
4. Huret
M10-1.00↑ M10-1.00↓ threads
square holes 2.7↑ 2.7↓ on Garelli, Motobecane, others
square holes 2.0↑ 2.0↓ on some Italian mopeds
5. Veglia
M11-0.75↑ M10-1.00↓ threads
square holes 2.0↑ 2.0↓ on Baretta, Malaguti, others
M11-0.75↑ screw-on↓ threads
square holes 2.7↑ 2.7↓ on Vespa (some), others
M11-0.75↑ press-on↓ threads
square holes 2.0↑ 2.0↓ special on Peugeot 102, 103
6. Walker
M10-1.00↑ press-on↓ threads
square holes 1.8↑ 1.8↓ on ’75-86 Derbi Variant
7. Jawa
M10-1.00↑ M10-1.00↓ threads
square holes 2.2↑ 2.2↓ on ’73-83 Jawa 207
8. Tatung on General, Indian, others
9. Nippon Seiki on Honda NC50, PA50
10 Stewart Warner on AMF (some)
11 Service Info
Speedometers on vintage mopeds are all mechanical type, not electronic. A driver or sender on the front wheel rotates the cable. The cable, with a spinning wire inside, goes up to the speedometer head. Inside the gauge a spinning magnet moves the needle. An odometer or mileage meter is also driven by the cable, with gears.
Speedo families are heads, cables and drivers that have certain things in common. The head and driver threads are the same. The head and driver square cable holes are the same. So heads, cables and drivers within the same family all interchange.
Square cable holes are a little bigger than square cable ends. A 2.0mm hole takes a 1.85 to 1.95mm cable, and a 2.75mm hole takes a 2.55 to 2.70mm cable. This is a source of confusion.
Speedo drivers: On the front wheel is small gear box that changes the wheel rotation into the cable rotation.
Speedo driver Side means what side of the front wheel would make the driver rotate the cable clockwise, viewed from above. Reversing the side by flipping the front wheel reverses the speedo cable rotation.
Speedo driver Type: Most drivers have the cable exiting below the axle. Most left side drivers are type d because they look like a letter “d”. Most right side ones are type b because they resemble letter “b”. But some type d’s are for right side, and some type b’s are for left. This is because the worm gear teeth can be wound left or right, like a left or right hand thread bolt.
Speedo driver Ratio means how many times the cable rotates for each wheel rotation. Larger diameter tires require higher driver ratios to achieve the same cable rotation. Smaller tires require lower ratios. The gear ratio is related to the angle of the gear teeth as well as the tooth counts.
Speedo cables can be different lengths for the same bike. Aiming the speedo driver more upward requires a shorter cable. Aiming the driver more downward requires a longer cable. When the front suspension goes over bumps, the speedo cable has to flex up and down. Aiming the driver 90 degrees to the suspension travel makes the least stress on the cable and the least interference with the suspension movement. Most newer bikes are that way. But then the cable hangs out a lot, and requires a fender eyelet to help prevent the long cable from getting snagged on things when parking or maneuvering.
1. CEV
00 head M driver head driver head driver
0 thread M thread hole hole end end
M11-0.75 M10-1.00 1.8 2.0 1.75 1.95 CEV-1.8/2.0
M11-0.75 M10-1.00 2.0 2.0 1.95 1.95 CEV-2.0/2.0
M11-0.75 M10-1.00 2.0 2.75 1.95 2.60 CEV-2.0/2.7
CEV 2.0/2.0 and CEV-1.8/2.0 speedo families are on US models of Italian mopeds, Baretta (some), 80’s Cosmo (some), Bianchi (some), Gadabout, Italvelo (some), Intramotor Gloria, Malaguti (some), Motobecane Sebring, Motobee, Motomarina, Motron (some), Negrini (some), Rizzato, Safari, Snark (some), Testi (some), Vespa Grande (some), West Wind, Yankee Peddler, and some non-Italian mopeds, Carabela, KTM Foxi.
CEV-2.0/2.7 speedo family is on some Italian scooters, mini-cycles and motorcycles.
1a. CEV Speedometers
CEV 2.0/2.0 60mm speedometers in Dec 2022
Speed testing: They are all tested on the same drill, for comparison of speed accuracy. The odometer accuracy never varies – it either works or not. It takes up to 3 minutes at 20mph to click off one mile. Each speedometer is tested for at least 3 minutes, some over 10 minutes all together. Once all of the 17 tested speeds are retested and verified, an average speed can be calculated. First the highest and lowest are ignored. Then the remaining 15 test speeds are added up and the sum is divided by 15 to give 23.8 average. You can see that most of the speedos tested at 23, 24, or 25 mph. The accuracy is an important factor in determining the price. The condition of the glass, face, and needle are also important.
CEV-2.0/2.0 60mm round speedometers: 15 out of 17 were originally frozen. They have all been cleaned, checked, and lubed, and tested.
# dia. miles price tested
# mm miles price speed error odometer glass/face
1 60 00129 $00 no speed
2 60 00003 $25 25 -15 odo works, speedo reads very low
3 60 01346 $65 40 -0 odo works
4 60 00009 $25 40 –0 odo frozen, only speedo works
5 60 04725 $40 38 -2 odo works, looks ugly
6 60 00002 $00 no speed new, tiny scratches
7 60 00001 $85 42 +2 odo works, reads up to 60 mph
8 60 00358 $00 no speed
9 60 00002 n/a 40 -0 odo works, new
14 60 00002 n/a 36 -4 odo works, new in original box
Vespa Grande came with three different 60mm speedos, CEV blue #307252, Veglia black #307168, and CEV black #307872.
1b. CEV Speedo Drivers
Rinvio per contachilometri CEV 7408
CEV speedo drivers come in a wide range of styles, sizes, and ratios, perhaps 100 kinds. Here are only about half of them, the ones with small axle holes, mostly 11 or 12 mm, for lightweight motorcycles, mini-cycles and mopeds.
CEV speedo driver part numbers in the 1960’s and 70’s all had a 4-digit number starting with 7. They were sequential, here starting at 7121. Most older ones (lower part numbers) had higher ratios for larger tires 18 and 19 inch. But only the last 3 digits were stamped on the driver, at the brass end cap. After the mid 1980’s the 3-digit stamped-on numbers replaced 4-digit numbers. So a CEV 7416 is the same as a CEV 416. But some changed, like the CEV 7408 with an 11 mm axle hole became the CEV 408 with a 12 mm axle hole.
’82 MMI catalog
Grease zerk or cap: CEV drivers in the 1960’s, 70’s and early 80’s all had grease zerks for applying grease with a grease gun, up to number 7429. The 1982 Marina Mobili Parts Catalog and 1985 price list contain 9 CEV drivers from 7121 to 7429 for mopeds, mini-cycles and lightweight motorcycles. Some time after that, in the late 1980’s or 90’s, starting with number 7430, the zerk was discontinued, replaced at first by a small non-removable cap, and then a large removable grease cap. With that you just push the grease in with your finger tip. That was the most visible thing that changed. Some versions also got thinner. Here we use the older 4-digit numbers for the older grease zerk versions, and the newer 3-digit numbers for the newer grease cap versions.
Right or left: The cable must rotate clockwise, looking down from the speedometer. So for each side of the bike there are right or left types. It happens that CEV worm gear drives are all wound in the same direction, like a normal bolt. There are no reverse threads inside. So the shape of the speedo driver determines what side of the bike it goes on. Ones that resemble a “d” go on the left, and “b” ones go on right. This is true for CEV speedo drivers, but not all other makes.
1. driver with grease zerk
2. grease cap permanent
3. grease cap removable
ID# Index: look up the ratio, then scroll down to it
CEV 001 1.4 003 1.7 004 1.7 011 1.4 012 1.6 013 1.7
CEV 121 1.8 221 1.8 238 1.9 240 0.9 252 1.5 278 1.2
CEV 287 1.3 288 1.1 289 1.6 296 1.7 303 1.7
CEV 324 1.7 337 1.2 341 0.9 358 1.9 373 1.8 375 1.9
CEV 402 1.3 403 1.8 408 1.6 416 1.6 419 1.3
CEV 421 1.8 422 1.6 428 1.7 429 1.8
CEV 430 1.8 442 2.1 456 1.6 486 1.7
CEV 508 1.9 536 1.8 543 1.3
CEV#: 4-digit has grease zerk, 3-digit has grease cap, 2-digit has none
CEV# color: violet is from the ’82 MMI catalog (Marina Mobili Inc).
ratio color: black is from ’82 MMI, green is measured, gray is guessed
xx# axle ratio mar side/ cable
xx# hole ratio mark type hole depth price
7341 11 0.9 341 R b 2.0 07.5 $47
for OD 11.2 3.00-5
.
7240 12 0.9 240 L d 2.0 07.5 none
for OD 11.2 3.00-5
.
7xxx 12 0.9 xxx L d 2.0 20.6 none
for OD 11.2 3.00-5
Benelli CB1160/B ’69-73 Buzzer (3.00-5)
7xxx 10 1.0 xxx R b 2.0 03.7 none
for OD 12.4 3.50-5, 4.00-5, 3.00-7
Di Blasi 172 ’74-79 R2 (3.50-5)
1979-1997 Di Blasi R7 had Huret
xxx 0 10 1.0 xxx L d 2.7 03.7 none
for OD 12.4 4.00-5, 3.00-7, 2.50-8
Di Blasi 2343 ’97-on R7E (4.00-5)
7xxx 12 1.1 xxx R b 2.7 00.0 none
for OD 13.7 3.50-7
Benelli CB2157 ’71-72 Hurricane (3.50-7)
maybe ’70-72 Fantic Broncco TX6 (3.50-7)
7278 12 1.2 278 R b 2.7 20.6 none
for OD 14.9 3.50-8, 2.75-9 or 2.50-10
Benelli K55/B ’69-71 Hornet (2.75-9)
’67-72 Dynamo Compact (3.50-8)
7337 12 1.2 337 R b 2.7 22.0 $47
for OD 14.9 3.50-8, 2.75-9 or 2.50-10
.
7287 11 1.3 287 R b 2.0 03.7 none
for OD 16.2 3.00-10 or 3.50-10
.
7288 12 1.3 288 R b 2.0 06.8 none
for OD 16.2 3.00-10 or 3.50-10
’68-70 Garelli Broncco TC4, TS4 (3.00-10)
7402 11 1.3 402 R b 2.0 03.7 none
for OD 16.2 3.00-10 or 3.50-10
.
7419 11 1.3 419 L d 2.0 03.7 none
for OD 16.2 3.00-10 or 3.50-10
.
435 12 1.3 435 L d 0.0 03.7 none
for OD 16.2 3.00-10 or 3.50-10
Derbi 0E01620051 ’87-89 DS50
543 11 1.3 543 L d 2.0 03.7 none
for OD 16.2 3.00-10 or 3.50-10
.
7xxx 12 1.3 xxx R b 2.7 03.7none
for OD 16.2 3.00-10
Benelli K104 ’70-73 Dynamo Trail, II
7252 12 1.5 252 R b 2.7 00.0 none
for OD 18.7 2.50-14
Benelli G716 ’71-73 Mini Enduro
7422 10 1.6 422 0 0 2.0 00.0 none
for OD 19.9 2.00-16 or 2.25-16
.
012 0 12 1.6 16:10 L d 2.0 04.5 $29
plastic India-made for Tomos ’74-’18 most
Tomos 209650 but takes a non-Tomos cable
7289 11 1.6 289 L d 2.0 03.7 none
for OD 19.9 2.00-16 or 2.25-16
’78-80 Rizzato Califfo 16″
7416 12 1.6 416 R b 2.0 03.7 $49
for OD 19.9 2.00-16 or 2.25-16
.
456 12 1.6 456 L d 2.0 05.3 $47
for OD 19.9 2.00-16 or 2.25-16
.
013 0 12 1.7 17:10 R b 2.0 04.5 $27
plastic India-made for Tomos ’02-13 Rev, Sm
Tomos 232801 but takes a non-Tomos cable
7428 11 1.7 428 R b 2.0 00.0 none
for OD 21.1 2.50-16, 2.25-17 or 2.50-17
.
474 12 1.7 474 L d 2.0? 00.0 none
1987 Motomarina Sebring
shield lip on finger ring
7296 11 1.7 296 L d 2.0 00.0 none
for OD 21.1 2.50-16, 2.25-17 or 2.50-17
MMI J103 Motron 16″, Sebring 17″
7303 11 1.7 303 R b 2.0 07.5 $49
for OD 21.1 2.50-16, 2.25-17 or 2.50-17
shield lip on finger ring and outer step
7324 11 1.7 324 L d 2.0 03.7 $49
for OD 21.1 2.50-16, 2.25-17 or 2.50-17
Cimatti C3540 shield lip on finger ring
486 12 1.7 486 L d 1.8 03.7 none
for OD 21.1 2.50-16, 2.25-17 or 2.50-17
Derbi 0F01620051 ’87-89 Variant Sport
004 12 1.7 none R b 2.7 12.8 $39
for OD 21.1 2.50-16, 2.25-17 or 2.50-17
58556 ‘93-12 Aprilia Scarabeo 50-100
7121 11 1.8 121 L d 2.0 03.7 none
for OD 22.4 2.25-18 or 2.00-19
.
7373 11 1.8 373 R b 2.0 03.7 none
for OD 22.4 2.25-18 or 2.00-19
.
7221 11 1.8 221 L d 2.0 03.7 none
for OD 22.4 2.25-18 or 2.00-19
wide shield lip on finger ring
430 11 1.8 430 L d 2.0 07.5 none
for OD 22.4 fits Ward 450SS with the hub
hole moved inward, and a regular CEV 2.0 cable
7429 12 1.8 429 R b 2.0 03.7 none
for OD 22.4 2.25-18 or 2.00-19
.
7421 12 1.8 421 R b 2.0 07.6 none
for OD 22.4 2.25-18 or 2.00-19
.
536 12 1.8 536 R b 2.7 03.7 none
for OD 22.4 2.25-18 or 2.00-19
.
7239 12 1.8 239 L d 00.0 none
for OD 22.4 2.25-18 or 2.00-19
Benelli G227/3 Riverside 450SS
7358 9.7 1.9 358 R/L 2.0 03.7 none
for OD 23.6 2.25-19, 2.75-18 or 2.50-19
reversible right or left
7403 12 1.9 403 R b 2.7 22.0 $47
for OD 23.6 2.25-19, 2.75-18 or 2.50-19
.
7375 12 1.9 375 R b 2.0 03.7 none
for OD 23.6 2.25-19, 2.75-18 or 2.50-19
conduit screws on directly, no end cap
508 15 1.9 508 L d 2.7 23.5 $47
for OD 23.6 2.25-19, 2.75-18 or 2.50-19
.
7238 15 1.9 238 R b 2.7 00.0 none
for OD 23.6 2.25-19, 2.75-18 or 2.50-19
Benelli M92/2 Riverside 125, Cobra 125
442 12 2.1 442 L d 2.0 03.7 none
for OD 26.1 2.50-21 or bicycle 26 x 2.0
ultra-light off-road like a Derbi RD50
Tomos speedo drivers: In mid-2008 Tomos in Slovenia began outsourcing most production to India. Components also changed to India-made, such as the speedo driver. The part number did not change, but the square cable hole grew from 1.8 to 2.0 mm. This caused the square cable to slip often. The simple no-cost remedy is to smash the square 1.7 x 1.7 end of the cable into a rectangle 1.9 x 1.5.
Gear ratios: Several known tire sizes and gear ratios were used to calculate all others. First the tire outer diameter (OD) for a 1.6 ratio was guessed. Then all the other tire OD’s were calculated from that. The guess was revised, tire OD’s recalculated and compared. This was repeated, to finally match the known values.
Tire size: These vintage tires all have a 100% profile. The height is 100% of the width. So a 2.25-17 tire has an outer diameter of 17 + 2.25 + 2.25 = 21.5 inch. A 2.75-16 also has that same OD. Different tire sizes can have the same outer diameter.
gear for Tire sizes for CEV gear ratios
ratio OD tire size OD tire size OD tire size OD
0.9 11.2 0.00-11 00.1 3.00 - 5 11.0
1.0 12.4 3.50 - 5 12.0 2.50 - 7 12.0 4.00 - 5 13.0
1.1 13.7 3.00 - 7 13.0 2.50 - 8 13.0 3.50 - 7 14.0
1.2 14.9 2.75 - 9 14.5 3.50 - 8 15.0 2.75-10 15.5
1.2 14.9 3.50 - 8 15.0 2.50-10 15.0
1.3 16.2 3.00-10 16.0 3.25-10 16.5
1.4 17.4 2.50-12 17.0 2.75-12 17.5 3.00-12 18.0
1.5 18.7 2.25-14 18.5 2.50-14 19.0
1.6 19.9 2.75-14 19.5 2.00-16 20.0 2.25-16 20.5
1.7 21.1 0.00-11 00.1 2.50-16 21.0 2.75-16 21.5
1.7 21.1 0.00-11 00.1 2.00-17 21.0 2.25-17 21.5
1.8 22.4 3.00-16 22.0 2.75-17 22.5 2.50-18 23.0
1.8 22.4 2.50-17 22.0 2.25-18 22.5 2.00-19 23.0
1.9 23.6 2.75-18 23.5 2.25-19 23.5 2.50-19 24.0
2.0 24.9 0.00-11 00.1 3.00-19 25.0
2.1 26.1 2.50-21 26.0 0000 26 x 2.0 bicycle 26.0
1c. CEV Speedo Cables
CEV-Pagani transmissioni per contachilometri
00 head M driver head driver head driver
0 thread M thread hole hole end end
M11-0.75 M10-1.00 1.8 2.0 1.75 1.95 CEV-1.8/2.0
M11-0.75 M10-1.00 2.0 2.0 1.95 1.95 CEV-2.0/2.0
M11-0.75 M10-1.00 2.0 1.8 1.95 1.75 CEV-2.0/1.8-Tomos
M11-0.75 M10-1.00 2.0 2.7 1.95 2.65 CEV-2.0/2.7
CEV# Tomos# conduit lower end upper end price CEV-1.8/2.0
1100/575 575 = 22.6″ 1.80-1.90 1.60-1.65 $47.0 low speedo
CEV# Tomos# conduit lower end upper end price CEV-2.0/2.0
Repro C 0 750 = 29.5″ 1.94-1.98 1.90 rect. $32.0 Repro C =Repro 1 with rectangle end
7804/575 575 = 22.6″ 1.85-1.90 1.90-1.95 $39.0 Cimatti C3530
7804/600 600 = 23.6″ 1.85-1.90 1.90-1.95 $44.0 low speedo
7804/650 650 = 25.6″ 1.85-1.90 1.90-1.95 $42.0 ’80 Motron 0010B
7804/650 wire only 1.85-1.90 1.90-1.95 $17.
7804/700 700 = 27.6″ 1.85-1.90 1.90-1.95 $48.0 original
7804/750 750 = 29.5″ 1.85-1.90 1.90-1.95 $46.0 ’78-79 Motron 0010
7804/800 800 = 31.5″ 1.85-1.90 1.90-1.95 $42.0 original
307253 /0 000 = 00.0″ 1.85-1.90 1.90-1.95 none Vespa Grande with blinkers
CEV# Tomos# conduit lower end upper end price CEV-2.0/1.8 Tomos ’74-02
Repro CT 00000 750 1.70-1.75 1.95-2.00 $26.0 Repro CT =Repro 1 with wire inverted,
Repro CT 00000 750 1.70-1.75 1.95-2.00 $00.0 c-clip added under upper conduit lip
Repro 1 00 0000 750 1.90-1.95 1.67-1.70 $15.0 Repro 1 wrong wire ends
Repro 1 00 0000 750 1.94-1.98 1.70-1.75 $18.0 Repro 1 wrong wire ends
Repro 2 00 0000 750 1.75-1.80 1.88-2.00 $15.0 Repro 2 wrong upper thread
Repro 2 00 0000 750 1.75-1.80 1.88-2.00 none but wire fits 214.837 with some filing
7812/600 213.232 600 1.73-1.77 1.88-1.98 none ’74-76 low speedo
7812/700 213.729 700 1.73-1.77 1.88-1.98 none ’77-79 high speedo
7812/750 214.837 750 1.73-1.77 1.88-1.98 $42.0 ’80-91 more bend?
7812/750 227.698 750 1.73-1.77 1.88-1.98 none ’92-97
7812/750 213.729 750 1.75-1.78 1.83-1.85 $44.0 ’98-02 (’03-on had VDO)
7812/780 000.000 780 1.73-1.75 1.85-1.90 none ’87-89 Derbi V. Sport 0A01650021
7812/000 000.000 000 1.73-1.75 1.85-1.90 none ’88-89 Derbi DS50 0E01650021
CEV# Tomos# conduit lower end upper end price CEV-2.0/2.7
78??/500 000.000 500 2.60-2.65 1.88-1.98 $37.0 unknown application
2. Tomos
00 head M driver head driver head driver
0 thread M thread hole hole end end
M11-0.75 M10-1.00 2.0 1.8 1.95 1.75 CEV-2.0/1.8-Tomos
M10-1.00 M10-1.00 2.0 1.8 1.95 1.75 VDO-2.0/1.8
M10-1.00 M12-1.00 2.0 2.75 1.95 2.60 VDO 2.0/2.7-M12
Tomos Speedometers
Tomos Speedos on US models 1974 to 2017
Left: 1,2,3,4 CEV-type, Right: 5,6,7,8 VDO-type
Tomos 1974-02 CEV-type 40 mph M11-0.75 threads
# Tomos# years models face cable bulb volt/watt made by
1. 213233 1974-79 all Rev dk blu 2.00 9 bayon. 6V 1.2w CEV
2. 214838 1980-87 all Rev black 2.00 5 wedge 6V 1.2w CEV
3. 222006 1987-91 all Rev black 2.00 5 wedge 12V 1.2w CEV-Tomos
4. 227496 1992-02 all Rev black 0.00 5 wedge 12V 1.2w Facomsa
Tomos 2002-17 VDO-type 40 mph M10-1.00 threads
5. 232803 2003-05 all Rev white 0.00 7 bayon. 12V 1.2w MMB
6. 232803 2009-10 Revival white 0.00 5 wedge 12V 1.2w F- logo
7. 232803 2005-08 all Rev white 0.00 7 bayon. 12V 1.2w generic
8. 232803 2008-17 all Rev white 0.00 7 bayon. 12V 1.2w Alpha
These Tomos speedometers all read in mph. The odometers all read in miles, except #6 which reads in kilometers.
None of these are for sale. They are shown for identification and for reference. For 1, 2, 3, 4 replacements, see 1a. CEV Speedos. For 5, 6, 7, 8 replacements see 2a. VDO Speedos.
Tomos Speedo Drivers
001 12 1.4 14:10 R b 2.7 15.0 $49
for OD 17.4 2.75-12 or 3.00-12
Tomos 236328 for Arrow, M12-1.0 thread
011 0 12 1.4 14:10 R b 2.7 15.0 none
plastic India-made for Tomos Arrow ’05-09
Tomos 236328 for Arrow, M12-1.0 thread
7408 11 1.6 408 L d 1.8 03.7 55-45
for OD 19.9 2.00-16 or 2.25-16
Tomos 209650 for ’74-06 (11mm axle ends)
408 12 1.6 16:10 L d 1.8 03.3 $49
for OD 19.9 2.00-16 or 2.25-16
Tomos 230631 for ’07-’18 (12mm axle ends)
012 0 12 1.6 16:10 L d 2.0 04.5 $29
plastic India-made for Tomos ’74-’18 most
Tomos 209650 but takes a non-Tomos cable
003 12 1.7 17:10 R b 1.8 03.3 55-40
for OD 21.1 2.50-16, 2.25-17 or 2.50-17
Tomos 232801 for ’02-13 Revival, Streetmate
013 0 12 1.7 17:10 R b 2.0 04.5 $27
plastic India-made for Tomos ’02-13 Rev, Sm
Tomos 232801 but takes a non-Tomos cable
3. VDO
00 head M driver head driver head driver
0 thread M thread hole hole end end
M10-1.00 M10-1.00 1.8 1.8 1.75 1.75 VDO-1.8/1.8
M10-1.00 M10-1.00 2.0 1.8 1.95 1.75 VDO-2.0/1.8
VDO-1.8/1.8 speedo family is on US models of Batavus, Columbia, Hercules, Kreidler, Murray, Odyssey, Puch, Sachs, Sears Free Spirit, Solo, Sparta.
VDO-2.0/1.8 speedo family is on US-model Derbi Variant Sport 1986-89. The speedometer is CEV late-80’s square.
3a. VDO Speedometers
VDO 60mm speedos on US model Puch mopeds
VDO Speedometers For Sale
30mph, Puch logo, straight needle $35
40mph, straight needle none
3b. VDO Speedo Drivers
Metal Drivers (made up to 4/1978) Plastic Drivers (made from 4/1978 on)
mark price axle ratio mar side/ cable
markings 00 price axle ratio type hole open with 1 finger
21 LH 027/1 none 12.7 1.7 L d 1.8 Columbia dates 11/77
17 LH 29/54 none 12.7 1.7 L d 1.8 Columbia dates
00 LV 06/63 $52.0 11 1.7 L b 1.8 unknown dates 4/77
00 LV 28/18 $55.0 11 1.7 L b 1.8 unknown dates 11/79
16 LH 29/26 $55.0 11 1.6 L d 1.8 unknown dates 6/78
markings 00 price axle ratio type hole open with 2 prongs
21 LH 06/70 $52.0 11 1.7 L d 1.8 KTM 1009-050-000 dates 11/76
17 LH 29/24 $55.0 11 1.7 L d 1.8 unknown dates 4/80
21 LH 06/61 $55.0 11 1.8 L d 1.8 unknown dates 1/77 7/71
21LHRH17/17$60.0 11 1.6 LRdb 1.8 Batavus 42.138 dates 2/77 3/78
16 LH 032/1 none 11 1.6 LRdb 1.8 Batavus 42.365 dates 4/78
markings 00 price axle ratio type hole shielded with 2 prongs
17 LH 31/17 $65.0 11 1.7 L d 1.8 Hercules dates 4/78 11/79
21 RV 023/1 $52.0 11 1.7 R d 1.8 Puch dates 5/77 7/77 10/77 4/78 12/78
00 RH 23/4 none 11 1.7 R b 1.8 Puch date 5/78 (79 Magnum)
17 RV 031/5 none 11 1.7 R d 1.8 Puch dates 7/78 8/78
23 LH 023/5 $52.0 11 1.6 L d 1.8 Sparta 06008 dates 11/74 12/76 7/77 4/78
markings 00 price axle ratio type hole aftermarket with 2 prongs
AE-88 00000 $20.0 12 1.7 R b 1.8 Puch greased, photo below, sold “as is”
Markings: The brass end caps on VDO speedo drivers are marked with the tire or rim that they are geared for. 1970’s metal drivers are marked with the tire outer diameter (23, 22, 21, 20). 1980’s plastic drivers are marked with the rim size (19, 18, 17, 16). The tire OD’s are 4 inches more than the rim sizes, because moped tires are about 2 inches tall.
Batch marking: The marking that looks like a gear ratio is not. It’s some kind of batch number.
Tire marking: On some (21LH 6/61 and 23LH 23/5) the tire size marking disagrees with the measured gear ratio.
Gear ratio: The red colored ratios are from direct measurement. Black colored ratios are inferred.
Side: Most (10 of 14) VDO speedo drivers are for the left side. Some (2 of 14) are for right side. Some (2 of 14) are for left or right side. On those the cable can attach in two places with opposite rotation.
AE-88 driver, greased by a modified syringe
Greasing: The 70’s metal VDO speedo drivers had a grease zerk, but the 80’s plastic ones did not. One way to grease them without a grease gun or zerk is with spray chain lube. It penetrates in thin and then soon becomes thick. Another way is with a 5cc syringe and a 10-1.00 x 15 tall nut (for a Peugeot moped flywheel).
3c. VDO Speedo Cables
00 head M driver head driver head driver
0 thread M thread hole hole end end
M10-1.00 M10-1.00 1.8 1.8 1.75 1.75 VDO-1.8/1.8
M10-1.00 M10-1.00 2.0 1.8 1.95 1.75 VDO-2.0/1.8
conduit 00 lower end upper end price VDO-1.8/1.8
570=22.4″ 1.75-1.78 1.75-1.78 $17.0 silver original
570=22.4″ 1.75-1.78 1.75-1.78 28-17 42.137 0000 Batavus VA, HS50
590=23.2″ 1.75-1.78 1.75-1.78 28-17 black original
630=24.8″ 1.75-1.78 1.75-1.78 28-17 328.153.0250 Puch Maxi original
625=24.6″ 1.70-1.75 1.70-1.75 none MP-3150 000 80’s Taiwan
640=25.2″ 1.75-1.78 1.75-1.78 $28.0 black original
700=27.6″ 1.70-1.75 1.70-1.75 $20.0 MP-3154 000 80’s Taiwan
750=29.5″ 1.75-1.78 1.75-1.78 $20.0 UN12006 000 Magnum XK, Sears FS red
750=29.5″ 1.65-1.70 1.65-1.70 $18.0 D. PuchVDO 2010’s replacement
780=30.7″ 1.65-1.70 1.65-1.70 $19.0 D. PuchVDO 2020’s replacement
790=31.1″ 1.70-1.70 1.70-1.75 none A. 217.664 00 Tomos ’03-on, Magnum MkII
790=31.1″ 1.70-1.75 1.70-1.75 $22.0 B. MP-3152 0 ground to 3.3, Sears FS silver
790=31.1″ 1.80-1.85 1.80-1.85 $22.0 C. evenbetter ground to 3.3, ends 1.75
830=32.7″ 1.75-1.78 1.75-1.78 $25.0 27.78.96 00 Kreidler (longer than necessary)
850=33.5″ 1.75-1.78 1.75-1.78 $20.0 UN12017 00x modern replacement
conduit 00 lower end upper end price VDO-2.0/1.8
780=30.7″ 1.75-1.79 1.90-1.95 $29.0 0A0.165.0021 Derbi Variant Sport ’86-89
A. 790 217664 2010’s Tomos, white area needs grinding 4.0 to 3.3
B. 790 MP-3152 ’80’s Gadabout, driver end needs grinding 4.0 to 3.3
C. 790 evenbetter ’20’s replacement, needs grinding 4.0⇒3.3, 1.82⇒1.75
D. 750 PuchVDO ’10’s replacement, ends 1.65-1.70
E. 750 PuchVDO ’10’s replacement, ends 1.50-1.60 (too small)
4. Huret
00 head M driver head driver
0 thread M thread hole hole
M10-1.00 M10-1.00 2.0 2.75 Huret-2.0/2.7
M10-1.00 M10-1.00 2.75 2.75 Huret-2.7/2.7
Huret-2.7/2.7 speedo family is on US models of Arciero, Bianchi (some), Demm (some), Garelli, Gitane, Motobecane, Negrini (some), Pacer, Snark (some), Velomec.
The speedometers in this family have a white face.
Huret-2.0/2.7 speedo family is on some US model mopeds but not many.
The speedometers in this family have a black face.
4a. Huret Speedometers
1. Huret-2.7 Motobecane, 2. Huret-2.7 60mm round MMI #H125F for Garelli. 3. Huret-2.0 60mm round, 4. Huret-2.7 48mm round
Good-used Huret-2.7 Motobecane speedos, unfrozen, lubed, and tested.
Long term testing: These were unfroze with acetone and re-lubricated with Tri-Flow. Then they sat on a parts shelf for four years in zip-lock bags. After that long, none had become stuck/frozen.
Huret-2.7 Motobecane speedometers: The cover is glass, so it resists scratching. Repeated exposure to sunlight fades the white background to yellow and the blue numbers to white. When the numbers are faded out the needle is still red, so speed can be estimated, like telling time on a clock with no numbers.
# price miles all are working normally unless noted
1 $80 1780 excellent condition, works good
2 $70 5261 dark numbers, works good
3 $45 2024 barely visible numbers, works good
4 $40 7365 invisible numbers, works good
5 $35 5337 completely invisible numbers, works good
Good-used Huret-2.7 60 mm speedos, unfrozen, lubed, and tested.
Speed Testing: A hand drill was set to spin at a constant speed (by a stop screw in the trigger). Each speedo was spun for 30-50 seconds. The final speed was recorded.
Huret-2.7 60mm round speedometers: The test speeds all agreed quite well. These have great dampening, no jumping unless noted. The clear cover is glass, not plastic. So it does not get dull or scratched.
# price miles all are working normally unless noted
1 $60 2291 test speed 21, needle moves nice, not jumpy
2 $50 1827 test speed 22, needle moves nice, not jumpy
3 $65 1036 test speed 21, needle moves nice, not jumpy
4 $25 1535 test speed 21, jumps around sometimes
5 $35 2750 test speed 21, needle moves nice, not jumpy
6 $55 7332 test speed 21, needle moves nice, not jumpy
7 $70 0538 test speed 21, needle moves nice, not jumpy
8 $45 4720 test speed 20, needle moves nice, not jumpy
4b. Huret Speedo drivers
markings price axle side type depth 2.7 hole, 1 finger
20″ D 1.6 $42.0 11 L d 7.0 506361.7381
16 or 17 Garelli dates 1780 with stepped axle spacers
20″ D 1.6 $48.0 11 L d 6.0 507252.7381
2.25-16 Garelli dates 2877 0478 with stepped spacers
20″ D 1.6 $35.0 11 L d 3.2 H127F 00000
16 or 17 spoke dates 2877 fits Motobecane 2-finger
23″ D 1.8 $42.0 11 L d 3.2 H127/2K
2.50-19 Negrini KPN dates 1075
markings price axle side type depth 2.7 hole, 2 prong
20″ D 1.6 $59.0 11 R b 3.2 H127FM 000
2.25-16 mag wheel dates 1780
markings price axle side type depth 2.7 hole, 2 finger
23″ D 1.8 none 11 L d 4.0 17360 00000
2.25-17 Motobecane 40, 50 dates 4176 1577 1777 2578 2778
20″ D 1.6 $49.0 11 L d 4.0 01494 00000
2.00-16 Motobecane Model 7
Greasing with a modified syringe
Preparation: All of these Huret drivers were initially frozen, tarry on the inside. Some were also tarry on the outside. Scroll down for the detailed procedure for unfreezing, cleaning and lubing. All of those listed for sale have been serviced and are ready for use.
Reversible: Most of these Huret speedo drivers are reversible. They can be used on either side of the bike, because the cable can attach to either end, resulting in opposite rotation. Most are on the left side. All have to rotate the cable clockwise, viewed from above the speedometer.
4c. Huret Speedo cables
00 head M driver head driver head driver
0 thread M thread hole hole end end
M10-1.00 M10-1.00 2.0 2.75 1.9 2.6 Huret-2.0/2.7
M10-1.00 M10-1.00 2.75 2.75 2.6 2.6 Huret-2.7/2.7
0 part# 000 conduit lower end upper end price Huret 2.7/2.7
UN12018 00 570 22.4″ 2.56-2.63 2.56-2.63 none silver modern replacement
502951.7386 570 22.4″ 2.65-2.72 2.65-2.72 none black orig on Garelli early 70’s
18222 00000 570 22.4″ 2.52-2.55 2.52-2.55 $42 silver orig on Motobecane 50, 40, 7
191 0000000 575 22.6″ 2.60-2.65 2.60-2.65 $27 black modern replacement
H-126FB 000 575 23.6″ 2.60-2.65 2.60-2.65 none 80’s Taiwan 600 total
506961.7386 620 24.4″ 2.65-2.72 2.65-2.72 $39 black orig on Garelli (some)
H-126AF 00 695 27.4″ 2.60-2.65 2.60-2.65 $40 80’s Taiwan 720 total
507607.7386 720 28.4″ 2.65-2.72 2.65-2.72 none black orig on Garelli (most)
UN12191 00 810 31.9″ 2.55-2.60 2.55-2.60 $48 black orig on Avanti
0 part# 000 conduit lower end upper end price Huret-2.0/2.7
31 0460 444 570 22.4″ 2.55-2.60 1.78-1.82 $35 black orig, 1.8-to-2.6 adapter
31 0460 444 570 22.4″ 1.78-1.82 1.78-1.82 $20 same but missing lower adapter
H-126AF 000 695 27.4″ 2.43-2.48 1.80-1.85 $30 80’s Taiwan 720 total, wire inverted
5. Veglia
00 head M driver head driver
0 thread M thread hole hole
M11-0.75 M10-1.00 2.75 2.75 Veglia-2.7/2.7
M11-0.75 M10-1.00 2.0 2.0 Veglia-2.0/2.0
M11-0.75 M10-1.00 2.0 2.0 Veglia-2.0/2.0-Peugeot recessed
Veglia-2.7/2.7 and Veglia-2.0/2.7 speedo families are on US model mopeds, Baretta (some), Benelli, Concord, 80’s Cosmo (some), Demm (some), Fantic (some), Malaguti (some), Moto Guzzi, Motron (some), Testi (some) and Vespa-Piaggio (some).
Veglia-2.0/2.0-Peugeot speedo family is on Peugeot 102, 103.
5a. Veglia Speedometers
1. Veglia-2. diam Veglia# 0 part# on US-model mopeds:
1. Veglia-2.7 60 61-47541 307168 ’78-83 Vespa Grande (no blinkers)
2. Veglia-2.7 60 61-00000 183314 ’79-85 Vespa Si
3. Veglia-2.7 48 61-47282 155587 ’74-80 Vespa Ciao, Bravo
4. Veglia-2.0 60 61-47531 1200M ’77-80 Baretta, Malaguti
5. Veglia-2.0 48 61-47551 000000 ?
Veglia-Peugeot Speedometers
Veglia-Peugeot speedometer 60mm #56315
5b. Veglia Speedo drivers
Vespa# Veglia# price hole axle ratio side type conduit screws in
114744 50-1024 $33 2.75 11 1.73 R d 2.00-17 Vespa Ciao spoke
114744 50-1024 $34 2.75 11 1.73 R d 2.50-16 Vespa Si 4-ray mag
141303 50-1210 $52 2.75 11 1.64 R d 2.25-16 Vespa Bravo
306937 50-1224 $55 2.75 12 1.73 L b 2.50-17 Vespa Grande spoke
307300 50-1222 $45 2.75 12 1.73 R b 2.50-17 Vespa Grande x-mag
MMI# Veglia# price hole axle ratio side type conduit screws in
1202M 50-1026 $57 2.00 11 1.64 L d 2.25-16 Baretta, Malaguti
Peugeot# eglia# price hole axle ratio side type conduit slides on
46709 00-0000 $23 2.00 11 1.73 R d 2.25-17 Peugeot
Derbi# Veglia# price hole axle ratio side type conduit slides on
00000 80-7550 $40 2.00 12 1.73 R d 2.50-17 Derbi ’76-86
Ratio: Some Veglia drivers are marked with the gear teeth ratio, 18/11 = 1.64 or 19/11 = 1.73.
5c. Veglia Speedo Cables
00 head M driver head driver head driver
0 thread M thread hole hole end end
M11-0.75 M00-1.00 2.75 2.75 2.60 2.60 Veglia-2.7/2.7
M11-0.75 M00-1.00 2.0 2.0 1.95 1.95 Veglia-2.0/2.0
M11-0.75 M00-1.00 2.0 2.0 1.95 1.95 Veglia-2.0/2.0-Peugeot recessed
Vespa# 0 conduit 0 lower end upper end price Veglia-2/7/2.7
114745 000=00.0″ 2.55-2.65 2.55-2.65 none Ciao C7N $16 for 114746 wire only
158135 000=00.0″ 2.55-2.65 2.55-2.65 $34.0 C7E, C7V $16 for 097755 wire only
213466 000=00.0″ 2.55-2.65 2.55-2.65 none Ciao P,PX N/A for 213467 wire only
162125 000=00.0″ 2.55-2.65 2.55-2.65 $34.0 Bravo xxx $16 for 162126 wire only
307192 000=00.0″ 2.55-2.65 2.55-2.65 $30.0 Grande (no blinkers)
MMI# 0 conduit 0 lower end upper end price Veglia-2.0/2.0
1201M 650=25.6″ 1.90-1.95 1.90-1.95 $45.0 80’s MMI
1201M 0 670=26.4″ 1.90-1.95 1.90-1.95 $49.0 Baretta, Malaguti
1201AM 720=28.3″ 1.90-1.95 1.90-1.95 none 80’s MMI
1201BM 790=31.0″ 1.90-1.95 1.90-1.95 none 80’s MMI
Peugeot# conduit 0 lower end upper end price Veglia-2.0/2.0 Peugeot
52732 0 655=25.8″ 1.93-1.97 1.93-1.97 $37.0 original Peugeot 102, 103
60562 0 690=27.2″ 1.93-1.97 1.93-1.97 none Peugeot 103SP, TSM (longer)
02860 0 710=28.5″ 1.87-1.90 1.72-1.74 $29.0 replacement modified (725 total)
conduit shortened 3/4″, lower end piece spread wider, upper inner diam. widened
6. Walker
00 head M driver head driver
0 thread M thread hole hole
M10-1.00 M10-1.00 1.8 1.8 Walker
VDO-Derbi (Walker 60mm) speedometers with Veglia-Derbi drivers are on Derbi mopeds 1974-85.
6a. VDO-Derbi Speedometers (Walker)
Derbi speedometers are made in Spain by Walker, under license by VDO.
VDO-Derbi #000.501.6010 on all US models 1976-85
# miles price condition
1 10447 $60.0 new cond test=16.5mph, worked good flat rim original on TT
2 01953 $70.0 new cond test=16.0mph, worked good flat rim original on TT
3 05565 $30.0 fair cond test=16.0mph, worked good
4 03702 $30.0 fair cond test=17.0mph, worked good
5 01944 none good cond test=17.0mph, worked good
6 00038 $80.0 new cond test=16.5mph, worked good
7 00001 $90.0 new cond test=17.0mph, worked good
8 00124 none new cond test=16.5mph, worked good
9 00933 $55.0 good cond test=17.5mph, worked good shown with rubber visor ring
10 04376 $35.0 fair cond test=16.0mph, worked good
11 16748 $15.0 bad needle test=18.0mph, worked good shown with rubber visor ring
12 00000 $10.0 000.821.6830 rubber visor ring (optional)
6b. Veglia-Derbi Speedo drivers
0E01600051 ’86-87 DS50
6c. Derbi Speedo cables
0 Derbi# 0.0000 conduit 0 lower end upper end price Veglia-VDO
0A0.163.0021 00 780 = 30.7″ 1.75-1.79 1.90-1.95 $47.0 Derbi Variant ’75-86
0A0.164.0021 00 800 = 31.5″ 1.75-1.79 1.90-1.95 none Derbi C5, RD50
0 Derbi# 0.0000 conduit 0 lower end upper end price Veglia-CEV
0E0.161.0021 00 000 = 00.0″ 1.75-1.79 1.90-1.95 none Derbi DS50 ’86-87
Derbi SL, SLE, TT speedometer cables: Many Derbi speedometer cables have a kink below the speedometer that causes the inner wire to break repeatedly. The kink is from the back of the “pancake” headlight pushing the speedo cable back. There is no easy remedy. As with any speedometer cable, any kink or sudden change in direction will eventually cause the inner cable wire to break there, because as it rotates it is being bent back and forth.
7. Jawa
00 head M driver head driver
0 thread M thread hole hole
M10-1.00 M10-1.00 2.25 2.25 Jawa
Jawa speedometers are on 1973-83 Jawa 207 (Babetta) mopeds.
7a. Jawa Speedometers
Jawa #14002, 48mm
7b. Jawa Speedo drivers
7c. Jawa Speedo cables
0 part# 00 conduit 0 lower end upper end price Jawa
07-4780 495=19.5″ 2.05-2.15 2.05-2.15 $18 silver Jawa 207 original
8. Tatung
Tatung speedometers are on US models of 1970’s-80’s Taiwan-made mopeds, Clinton, General, Grycner, Jui Li, Indian, others and 1970’s Taiwan-made motorcycles, Indian, and Korean-made Trac.
9. Nippon Seiki
Nippon Seiki speedometers are on Honda NC50, PA50 and others.
10. Stewart Warner
Stewart Warner speedometer is on Murray mopeds, mounted inside a Peterson bullet-type headlight.
11. Service Info
Basic troubleshooting: Either the speedometer or odometer can work without the other, but the both need the cable and driver to be working. So if both speed and miles don’t work, it’s usually caused by a broken or slipping cable, and sometimes a broken or slipping driver. If either the speed or miles works, then then both the cable and driver must be good.
Stuck solid (frozen): Old speedometers become frozen where the cable enters. The grease there becomes sticky after many years. That causes the cable to break, or sometimes the driver. That is the main reason why 35 year old mopeds often have broken speedo cables. The other reason is the cable gets kinked. Speedometer drivers also become frozen after many years.
Unfreezing speedometers is done with drops of acetone and a modified allen wrench with a square end. Once the cable square hole can turn, it takes days or weeks and dozens of repeated applications of penetrating oil and rotation on a drill, before all of the stickiness is gone. If any stickiness is left behind, it can re-freeze a year later.
Unfreezing drivers: See below for the detailed procedure that involves soaking in acetone.
Greasing drivers: Most 70’s metal speedo drivers had a grease zerk, but most 80’s plastic ones did not. One way to grease them without a grease gun or zerk is with spray chain lube. It penetrates in thin and then soon becomes thick. Another way is with a 5cc syringe and a 10-1.00 x 15 tall nut (for a Peugeot moped flywheel).
modified syringe greaser
11a. Speedometer Tools
A. Acetone in a drip bottle with thin spout, for dissolving tar. Acetone is a powerful solvent that dissolves ink, tar, and paint. It penetrates into soft materials like rubber and vinyl, causing them to swell, distort, and become weaker. Lacquer thinner and MEK are similar to acetone.
B. Tri Flow drip lubricant, for applying drops of oil. It contains banana oil and microscopic Teflon spheres.
C. 1.7mm cable end bent. This is for counting revolutions when measuring gear ratio on 1.8-hole drivers.
D. 1.9mm cable end straight. This is for spinning 2.0-hole speedos on a drill.
E. Modified allen wrench, ground to a 1.9mm square on the small end. This is for applying torque to a stuck 2.0-hole speedo, and for rotating back and forth once it is able to move, or around and around if it’s able to move in circles.
F. Tapered square end shaft, for spinning 2.7-hole speedos with a drill.
G. Modified allen wrench, ground to a 2.6mm square on the small end. This is for applying torque to a stuck 2.7-hole speedo, and for rotating back and forth once it is able to move, or around and around if it’s able to move in circles.
H. Small screwdriver for rotating 2.7-hole speedos.
I. Greaser made from a 5 cc syringe and a M10-1.0 x 15 hex15 tall-thin nut (for a Peugeot flywheel). It was pure luck that the nut threaded tightly onto the smooth, tapered plastic spout. Of course, this is only for M10-1.0 thread speedo drivers, which fortunately is the majority.
11b. Unfreezing Huret speedo drivers
1970’s Huret speedometers and drivers become frozen (stuck solid) after 40 years. Other kinds do also but not as much. Even new speedos and driver become frozen, because the Huret grease decomposes into hard sticky tar. Out of a sample of 30 new and 10 used 70’s Huret speedo drivers, all were frozen solid.
Speedo drivers soaking in acetone
Ten frozen Huret speedo drivers were soaked in acetone in this sealed glass jar. After 17 hours they were removed and tested. 8 out of 10 were able to move, but 2 were still stuck solid. Those 2 were re-soaked with a new batch of frozen ones.
Acetone breaks down hard insoluble tar that is like taffy, and makes it less sticky and more soluble in diesel fuel or gasoline. When first removed from a day of soaking in acetone, the tar would ooze out like warm peanut butter when compressed air was applied to the cable hole. But after 20 minutes, that same peanut butter re-solidified, as the acetone evaporated out of it. So they need to go into the diesel fuel bath right after the acetone bath, rather than drying out first. They also need rotation to spread the solvent to all areas, like stirring.
The 8 unfroze drivers were then soaked in diesel fuel along with 7 others that did not need an acetone bath. The diesel fuel dissolves the loosened tar visible on the outside, as well as some soluble tar on the inside. After 2 days of soaking, 11 out of 15 moved freely, but 4 were still sticky. Those 4 were returned to the acetone bath pickle jar. The rest were brushed, cleaned and then blow dried with compressed air.
While waiting to be greased, 1 of the 11 drivers refroze and 2 became sticky, as acetone evaporated from the grease inside. Those 3 were returned to the pickle jar of acetone.
Greasing with a modified syringe
The remaining 8 clean and free drivers were greased with a modified syringe, made from a 5 cc syringe and a 10-1.00 x 15 tall nut (for a Peugeot moped flywheel). Each driver took 0.2 to 0.6 cc of lithium grease. The syringe has to be squeezed really hard with both hands. The grease goes in slowly. The gears are rotated in between squeezes to spread out the grease. Soon the old black grease and solvent oozes out from the thin gaps, like on the left driver in the above photo. The feel goes from gritty to greasy as the new grease pushes out solvent and grit.
The last step was straitening the fingers as needed, with a needle-nose pliers.
17 stuck drivers became 8 ready to use drivers. For the other 9 the entire process was repeated, as many times as necessary. This is how new and used 1970’s Huret (and others) speedo drivers are refurbished in preparation for sale.