Motobecane Parts

August 18, 2012

 

 

 

 

 

 

 

 

 

 

 

 

1974-76 Motobecane 40TS

74-6 Motobecane 40TS
1 speed Dimoby trans.
hard tail, 2.00×17 tires
no speedo, no fork lock
narrow painted fenders
US model round HL
’74-75 only yellow

1974-76 Motobecane 40TS

1974-76 Motobecane 40TL
one speed Dimoby trans.
hard tail, 2.00×17 tires
with speedo, fork lock
narrow stainless fenders
US model round headlight
’74-75 only yellow

1975-76 Motobecane 40TL

1975-76 Motobcane 40TL
one speed Dimoby trans.
hard tail, 2.00×17 tires
with speedo, fork lock
narrow stainless fenders
Euro model square HL
colors: orange or yellow

Motobecane 40TL

Motobécane
Mobylette 40TL
one speed Dimoby trans.
hard tail, 2.00×17 tires
speedo, lock, ss fenders
Euro model small HL
colors: coral or white

 

 

 

 

 

 

 

 

 

1974-76 Motobecane 50S rear shocks, 2.25x17 tires with speedometer painted yellow fenders US model round headlight '74-75 yellow only

1974-76 Motobecane 50S
rear shocks, 2.25×17 tires
with speedo, solo seat
painted yellow fenders
US model round headlight
’74-75 yellow only

1974-77 Motobecane 50L

1974-77 Motobecane 50L
one speed Dimoby trans.
rear shocks, 2.25×17 tires
solo seat,ss,sp,US model
74-5 yellow 76-7 orange

1974-77 Motobecane 50VL variator transmission

74-77 Motobecane 50VL
Variator (2-speed) trans.
rear shocks, 2.25×17 tires
solo seat, SS F fender
US model round headlight
74-5 yellow 76-7 orange

Motobecane Mobylette Series 50

Motobécane
Mobylette Series 50
Dimoby or variator trans
rear shocks, 2.25×17 tires
speedo, lock, solo seat
Euro models square HL

 

 

 

 

 

 

 

 

 

1976-77 Motobecane 50L

1976-77 Motobecane 50L
one speed Dimoby trans.
rear shocks, 2.25×17 tires
6V lites, speedo, lock
solo seat, chrome rack
SS F fender, US model
colors: orange or yellow

1976-77 Motobecane 50V

1976-77 Motobecane 50V
Variator (2-speed) trans.
6V lites, 2.25×17 tires
solo seat, SS F, US model
colors: orange or yellow

1978-79 Motobecane 50V variable (2-spd) trans. 12V lites candy red, blue silver

1978-79 Motobecane 50V
variable (2-speed) trans.
12V lites, 2.25×17 tires
solo seat, SS F, US model
candy red, blue silver

1978-79 Motobecane 50VL

78-79 Motobecane 50VLC
variable (2-speed) trans.
12V lites, 2.25×17 tires
solo seat, SS F, US model
candy red, blu-sil, copper

 

 

 

 

 

 

 

 

 

1978-79 Motobecane 7

1978-79 Motobecane 7
one speed Dimoby trans.
hard tail, 2.00×16 tires
12V lites, rear gas tank
solo seat, US model

1978-79 Motobecane 50VLA

78-79 Motobecane 50VLA
Variator (2-speed) trans.
12V lites, 2.25×17 tires
long seat, SS F, US model
aluminum wheels

1978-79 Motobecane 50VLX

78-79 Motobecane 50VLX
Variator (2-speed) trans.
12V lites, 2.50×17 tires
solo seat, US model
off road adventure model

Motobecane ID plate has 4 silver squares: 12           79 50V          B

ID has 4 stamps:
12__79__50V__B
(Dec ’79 25mph)

 

 

 

 

 

 

 

 

 

1979 Motobecane Moby Variator (2-speed) trans. 12V lites, 2.25×17 tires solo seat, US model candy red, blu-sil, copper

1979 Motobecane Moby
Variator (2-speed) trans.
12V lites, 2.25×17 tires
solo seat, US model
restored by B. Small

1980 Motobecane Traveler

’80 Motobecane Traveler
1 speed Dimoby trans.
rear shocks, 2.00×17 tires
with speedo, solo seat
US model round headlight
colors: yellow or silver

1980 Motobecane Moby

1980 Motobecane Moby
Variator (2-speed) trans.
12V lites, 2.25×17 tires
long seat, US model
candy red, blu-sil, copper

1980 Motobecane Le Moped

80 Motobecane Le Moped
Variator (2-speed) trans.
12V lites, 2.25×17 tires
long lift-up seat, US model
gold aluminum wheels

 

 

 

 

 

 

 

 

 

On the frame behind the headlight is the ID plate. The lower squares say model (left) and speed version (right), stamped in. Before 1980, A=30, B=25, C=20. From 1980 on, A=20, B=25, C=30. Before 1978, no letter, just 20, 25, or 30 (mph). Hope yours is a 30! 1980 was the last year for US models. 1981 had new 17 digit VIN and new EPA and DOT noise and safety regulations. That  was “the last straw”. 

1978 Motobecane Logo

1978 Motobecane Logo

Welcome. Myron’s Mopeds carries Motobecane moped parts, for 1970′s US models. Motobecane has made many other models, a model line, and millions sold, for every major country in Europe and on most of the Earth. The quantity of 1970′s USA mopeds is less than 10% of all Motobecanes world wide since the 1920′s. All of the US models use the “Moby” engine, aka “AV7″, piston port, two transfers, rubber mounted. Motobecanes from earlier or later times or from other countries, are not included here.

 

Motoconfort

Motoconfort is a branch

1932 Motobecane Logo

1932 Motobecane Logo

Motobecane  began in 1922 as two French engineers, Charles Benoit and Abel Bardin. They made the name from “moto” French slang for motorcycle, and “bécane” French slang for bicycle. In the 1950′s, Motobecane pioneered the dual action clutch system, where one clutch makes the engine start when the rear wheel speed becomes fast enough, and the other clutch makes the bike move forward when the engine speed becomes high enough. They called this dual system “Dimoby”. It means “one speed dual auto clutch”. What’s confusing is the variator models (two speed, dual auto clutch) were not called Dimoby. Motobecane has a division called Motoconfort. That name appears on some of the original parts and packaging. It is easy to confuse “comfort” and “con fort” (with force). Remember Motobecanes have strength, not comfort!   

==================================================================================

Gurtner BigGurtnerGurtner Motobecane Carburetors

Gurtner MB bottom pull choke parts exposed

Gurtner AR2 bottom pull choke parts exposed

Gurtner MB Top pull choke  cable routing

Gurtner AR2 top pull choke cable routing

 
 
 
 
 
 
 

The Gurtner “AR2″ series carburetors are slightly larger than a pack of cigarettes. There are two sizes, 10 or 12mm, and two styles, side or center mount. On the older style center mounted carbs, with short intakes, the choke cable is top pull. The carb is not trapped. On newer (after March 1977) side mount (for easier access) carburetors with swinging engines (variators), the choke cable is bottom pull. The choke wire runs through the carb, trapping it on the bike. Most service operations are done with cables attached. If you pull the choke wire all the way out, it won’t usually go back because the braided end gets frayed. 

 
location “A or B”    carb ID #      size      clamp                applications                                      part #s
=======================================================================
center mount A  AR212/R705  12mm   17mm    pre-03/1977 30mph variator, short intake  20026=carb  53657=body
center mount A  AR210/R991  10mm   16mm                        25mph variator, short intake  52175=carb  52430=body
    side mount B  AR212/R873  12mm   19mm   post-03/1977 30mph variator,  long intake  54973=carb 54466=body
    side mount B  AR212/R729  12mm   19mm                        25 & 30 Dimoby, long intake  22160=carb 54466=body
    side mount B  AR210/R910  10mm   19mm                        20mph Dimoby,  long intake  54115=carb  54235=body
center mount     AR1-12-884    12mm   19mm    Model 7 (not shown) 20,25,30 Dimoby      23021=carb
==============================================================================
Key:   A = center mount carb only       B = side mount carb only 
 
Gurtner Carb Exploded View
  1A  53657 Ø12 carb bare    ???  for AR212/R705
  1A  52430 Ø10 carb bare    ???  for AR210/R991
  1B  54466 Ø12 carb bare    ???  for AR212/R873 & 729
  1B  54235 Ø10 carb bare    ???  for AR210/R910
  2A  18355 air filter cover     ???  for center mount
  2B  20949 air filter cover    N/A  for side mount
  3A  15041 air filter screen   ???  for center mount
  3B  20999 air filter screen   ??? for side mount
  4A  18356 spring clip           ??? for center mount
  4B  M6cup  cupped washer   $4  Myrons upgrade
  5B  M5lock M5 nylock nut     $1  Myrons upgrade
  5B  M6lock M6 nylock nut     $1  Myrons upgrade
  6B  21000 stud 5mm          ???  until 1978 
  6B  23562 stud 6mm          ???  1978-later
  7B  20997 air filter gasket   ???  for side mount
  8B  20996 air filter              ???  for side mount
  9    19689 threaded plug     $2  M3 x ? taper seal 
10    19767 bolt                    $2  M6 x 1 x ? w/flange
11    15326 gasket               $1  5mm paper washer
12    20475 sealing ring        $8  thick rubber o-ring
13A  00189 cable adjuster  A10 for center mount   
13B  21940 cable guide         $12 for side mount
14    18893 screw                 $1 with washer
15    01271 washer               $1 with screw
16A  21229 slide cap              $4  recessed for elbow
16B  21696 slide cap            N/A  threaded for adjuster
17    14107 throttle spring    $7
18    15319 throttle slide      ???   for 10mm carbs
18    19278 throttle slide      ???   for 12mm carbs
19    14120 choke spring      $10
19B  22935 choke ring          $2
20    14119 choke slide         $18
21    00204 idle spring          $2
22    18892 idle speed screw $2
23    00208 bolt assy            $5
24    00878 nut                    $3
25    15043 mount clamp     $3
26A  14100 mount sleeve     ???  19×16 black (Ø10)
26A  16630 mount sleeve     ???  19×17 white (Ø12)
26B  22689 mount gasket    ???
27    18880 float gasket        ???
28    14133 fuel filter            ???
29    14101 float                   ???
30A  52560 diffuser              ???
30A  19990 diffuser              ???
30B  20573 diffuser              ???
30B  54237 diffuser              ???
30B  21002 diffuser              ???
31    20000 diffuser cap        ???
32    21841 fuel jet 210=52  ???
        23545 fuel jet 210=52  ???   for 20mph Dimoby
        54214 fuel jet 52=210  ???
32    21843 fuel jet 220=54  ???
        23546 fuel jet 220=54  ???   optional size
32    21842 fuel jet 225=55  ???   optional size
32    21949 fuel jet 230=56  ???
        23547 fuel jet 230=56  ???  for 25&30 Dimoby+
32    20216 fuel jet 235=57  ???   optional size
32    23548 fuel jet 240=58  ???   optional size
        22938 fuel jet 240=58  ???
32    20627 fuel jet 245=59  ???   optional size   
32    xxxxx  fuel jet 250=60  ???   optional size   
32    20628 fuel jet 255=61  ???   optional size   
34A  xxxxx  float cover none  ???  no fuel inlet
34B  22161 float cover vert   ???  vertical inlet
35B  21228 float cover hor.   ???  horizontal 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 Motobecane Decompression Valve:

Motobecane Decompression Valve

Motobecane Decomp Valve

 

 

 

 

 

 

Motobecane Cables:

Motobecane Cables are all single-ended, with a screw-on pinch bolt at one end. So the inner wire can slide out and be replaced separately. Motobecane controls and Gurtner carburetor choke parts are not like any other moped, so those cable related things are unique to Motobecane. When there are are “universal” substitutes, they are listed below, with links to Parts By Type/Cables. Just remember the item number to scroll to, like P2c or W1.    

Motobecane Cables1   20533  rear brake cable 56×63″ silver  $15
1               rear brake cable 56×63″ black  $15
     use rear brake cable 62×69″ black C2
2   15581  step ferrule 6-to-8mm F1
3   00716   6 x 11mm pinch bolt P2a
4   15600  rear brake wire 63″, use  69″ W1
5   20532  front brake cable 31×38″ silver $15
5   23856  front brake cable 31×38″ black $15
      use front brake cable 39×48″ black C1
6   15599  univ front brake wire 48″ W3
7   16944  step ferrule 4-to-7mm F2
8   15578  decomp. cable 29×36″ silver    $17
8               decomp. cable 29×36″ black    $17
9   14974  decomp. wire 36″ (32″ min)      $7
      use univ decomp wire 48″ W4
10              choke cable 37×44″ silver       $15
      use univ throttle cable 37×47″ black C3
10a           choke cable 42×47″ silver        $15
10a           choke cable 42×47″ black        $15
11  21286 choke/throttle wire 47″ W2
12              throttle cable 37×44″ silver    $15
       use univ throttle cable 37×47″ black C3
12a 53419  throttle cable 35×44″ silver    $15
12a             throttle cable 35×44″ black    $15
      use univ throttle cable 37×47″ black C3
A  21222  brake cable adjuster original  $3-$5
     use adjuster 6mm x 1.0 A2 or A3 
B  20059  cable guide and fender bolt         $8
C  14322  choke pinch bolt 12mm long       $6
D  20053  choke step spacer 3mm long     $8
E  23123  decomp pinch bolt 17mm long    $5
F  23122  decomp step spacer 8mm long   $5
G  00189  adjuster 6mm x 0.8 fine A10 
H  21940  cable elbow                see 13b-carb
I   23089  adjuster 5mm x 0.9 coarse A1c
J   14120  choke spring               see 19-carb
K  14119  choke slide                  see 20-carb
L  22936  choke cable guide       see 20b-carb
     use M6x1.0 adjuster A2 or shorter
M 22935  choke cable ring          see 19b-carb
     use washer or step ferrule 4-to-7mm F2 
N                adjuster 7mm x 1 short A12
O  23114  throttle sliding block     see controls
 
 
 

 

 

 

Cable lengths are for original handlebars. Low or narrow bars need shorter cables. Tall or wider bars need longer cables. Motobecane original cables are nylon lined. Most models are silver cables, that get sunburned brown where they are not covered by the grey sheath. Even though they look bad, they still function. The sheath becomes brittle with age. When that happens, it breaks in certain places. Then the cables get flexed only in certain places. So new cables in old brittle sheaths is not a good idea. It’s better to remove the brittle sheaths, or buy new flexible wire or cable sheaths/covers from some electronics stores. When the sheath is flexible, the whole cable flexes gently. It performs better and lasts longer. Always lube cables with a drip oil can, or buy a small bottle of cable lube. Often cables and throttles resist moving, and at first seem bad, but become freer after oil gets inside them.     

More Motobecane parts being organized …

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Wards-Riverside

1959 Motobecane AV88 Wards Riverside

1959 Motobecane AV88 Wards Riverside Mo-Ped

These were made from the late 1950′s to the mid 1960′s by Motobecane in France, for Montgomery Wards department stores throughtout the USA. You could order one from their catalog. They were models AV78 and AV88.