Chains

July 14, 2014

All European mopeds, and Asian mopeds with European engines, have 1/2″ x 3/16″ chains.

In modern chain numbers, they have 415 or 415H type motor chains. Most mopeds use a 415H with taller and wider plates. Some (with a lip close to the sprocket teeth) must have a 415 with shorter and thinner plates. 

How to install and remove master links.

How to install and remove master links.

To order a regular replacement chain for your moped, count the links (L) in your old chain. Tomos is around 90L -94L, Puch is around 100L, others are 102L to 106L . It’s always an even number because roller chain links come in pairs, inner and outer. Some chains have a “half link” that’s half inner and half outer. Then the link count will be an odd number.

Myrons Mopeds will cut the new chain to have the number (must be even) of links that you say, for no extra charge. If your chain is a 415H, and you need an odd number of links, a 415H half link is available for $3 extra.

 

 

RK415H 110L chain

A. RK 415H 110L modern chain from Malaysia
3.93 x 8.0

Iris 415 104L vintage chain

B. Iris 1/2 x 3/16 102L vintage chain, Spain
3.89 x 8.0

ČZ chain

C. ČZ 1/2 x 3/16 96L vintage, Czech Republic
4.14 x 9.6

Iris Copper chain

D. Iris Copper 1/2 x 3/16 106L vintage, Spain
3.89 x 8.0

 

 

 

 

 

 

Regina 415 vintage chain

E. Regina “415” 90L vintage chain from Italy
3.89 x 8.4

Regina 415

E. The only vintage chain that says 415. Wow!

Union chain made in Germany

F. Union/Styria 100L vintage chain, Germany
4.05 x 9.0

Regina

G. Regina (thick) 95L
4.05 x 9.0  Italy

 

 

 

 

 

 

Regina Extra

H. Regina Extra 77L
click to enlarge
4.05 x 7.9

Chains Oct 2012

I. #24 is same as #D (coated with white grease)

W circled logo

J. “W-circled” chain
92L, 98L, 100L
4.05 x 7.7

 

 

 

 

Part # #              chain#   pin x width       links Price      Applications
######## ## #################################### ### #########################
         C H A I N S    f o r   s a l e
TYC-96      chain    TYC 42    415   3.58 x 7.0 black 96L $20 some mopeds and motor kits
TYC-100      chain    TYC 42    415   3.58 x 7.0 black 100L $22 some mopeds and motor kits
41-90      chain    MAX 41    41    3.58 x 8.9 black 90L $20 industrial (and mopeds)
41-98      chain    MAX 41    41    3.58 x 8.9 black 98L $20 industrial (and mopeds)
41-240      chain    MAX 41    41    3.58 x 8.9 black 240L $45 industrial
207012 21      chain     plain    415H   3.93 x 8.0 black 90L $18 European mopeds
16092 22      chain      KMC    415H   3.93 x 8.0 black 98L $15 European mopeds
16096 23      chain      KMC    415H   3.93 x 8.0 chrome 98L $20 European mopeds
16096+      chain      KMC    415H   3.93 x 8.0 chrome110L $30 European mopeds
340360 A      chain        RK     415H   3.93 x 8.0 black 110L $20 <<<<   very good chain!
491200      chain      CIC     415H   3.93 x 8.0 black 122L $25 European mopeds
420-120L      chain     plain     420    3.93 x 9.4 black 120L $25 Asian mopeds
RK420 25      chain        RK      420    3.93 x 9.4 black 84L $18 Asian mopeds
Tsu420      chain   Tsubaki   420    3.93 x 9.4 black 108L $25 Asian mopeds
RK428H      chain        RK    428H  4.45 x 12.0 black 120L $30 small motorcycles
Iris B vintage chain    Iris   415   3.89 x 8.0 black 102L $50 Derbi 1970’s original NOS
Iris race D vintage chain    Iris   415   3.89 x 8.0 copper 106L $75 Derbi 1980’s racing chain NOS
Regina E vintage chain Regina 415  3.89 x 8.4 black 90L $35 Tomos 1970’s original NOS
Sedis vintage chain  Sedis  415  3.93 x 7.5 black 88L $40 Peugeot 1970’s original NOS
Wcirc92 J vintage chain W-circ  415  4.05 x 7.7 black 92L $35
Wcirc98 J vintage chain W-circ 415   4.05 x 7.7 black 98L $40
Wcirc100 J vintage chain W-circ 415   4.05 x 7.7 black 100L $40 Flying Dutchman, others
RegExtra H vintage Regina Extra 415  4.05 x 7.9 black 77L $25 Italian 1970’s (has half link)
RegHD G vintage chain Regina 415  4.05 x 9.0 black 95L $35 Italian 1970’s (has half link)
Union F vintage chain Union  415  4.05 x 9.0 black 100L $80 Puch 1970’s original NOS
ČZ C vintage chain    ČZ    415   4.14 x 9.2 nickel 96L $45 Tomos 1990’s original NOS

 

 

 

 

Master Links

###### ### ################################ #### ###########################
     M A S T E R    L I N K S    f o r   s a l e : In order by pitch, pin size, width
                                      inner Cabinet rows 1 to 6, columns a to e
                 pitch    pin    width  model #
###### ###     3.57 Pins – light pink drawers #### ###########################
35 link  1b master link 9.53 x 3.57 x 7.7 ANSI 35 $3 #35 3/8 pitch chain
35 half  1c half link      9.53 x 3.57 x 7.7 ANSI 35 $3 #35 3/8 pitch chain
410 link  2b master link 12.7 x 3.57 x 5.8 410 (ASA 43) $2 #410 bicycle 1-speed
410noclip  2a master link 12.7 x 3.57 x 5.8 410 clipless $1 flex chain to unlock
42 link  2d master link 12.7 x 3.57 x 7.2 ASA 42 $6 Peugeot 102 original
42H half  2e half link      12.7 x 3.57 x 7.6 ASA 42H $3 holes too small for 415
41 link  3a master link 12.7 x 3.57 x 9.2 ANSI 41 $3 widest chain with 3.57 pins
###### ###     3.87 Pins – white drawer #### ###########################
415 iris  3b master link 12.7 x 3.87 x 8.3 415 Iris $7 Motobecane, Derbi original
###### ###     3.93 Pins – light yellow drawers #### ###########################
415 link  3d master link 12.7 x 3.93 x 7.9 415 Sedis $5 Peugeot 103 original
415H link  3e master link 12.7 x 3.93 x 8.5 415H $3 2004-later Tomos original
415H chr  3e master link 12.7 x 3.93 x 8.5 415H chrome n/a fits 1990-later 415H chains
415H half  3e half link      12.7 x 3.93 x 8.5 415H $3 fits 1990-later 415H chains
415 reg1  4a master link 12.7 x 3.96 x 8.8-9.2 415 Reg. $8 h. duty Italian “Regina Extra”
420 link  4b master link 12.7 x 3.93 x 9.8 420 $3 wider than 415 or 415H
420 half  4b half link      12.7 x 3.93 x 9.8 420 $5 thinner than 420H or 40
40 link  4d master link 12.7 x 3.93 x 11.1 ANSI 40 $5 40 master link also fits 420H
###### ###     4.05 Pins – lt. green – master plate “17” #### ###########################
415 tom1  4e master link 12.7 x 4.05 x 7.9 415 W circled $5 1970’s -80’s Tomos original
415 reg2  5a master link 12.7 x 4.05 x 8.2-8.6 415 Reg. $5 Italian original “Regina Extra”
415 plain  5b master link 12.7 x 4.05 x 8.7-9.0 415 plain $5 original chain
415 puch  5c master link 12.7 x 4.05 x 9.2-9.4 415 Union $8 Puch original, Regina Extra HD
###### ###     4.14 Pins – light blue – master plate “18” #### ###########################
415 “H”  5d master link 12.7 x 4.14 x 8.4 415 plain $2 late 1980’s standard? Not 415H
415 “H”  5e master link 12.7 x 4.14 x 8.4 415 (bag of 10) $10 late 1980’s standard? Not 415H
415 tom2  6a master link 12.7 x 4.14 x 9.4 415 W circled $6 late 1980’s Tomos original
415 CZ  6a master link 12.7 x 4.14 x 9.6 415 “ČZ” N/A late 1990’s-early 2000’s Tomos
###### ###     4.43 Pins – dark blue drawers #### ###########################
Jawa link  6c master link 12.7 x 4.42 x 9.2 Jawa $4 Jawa – thicker pin & roller
428 link  6d master link 12.7 x 4.43 x 11.4 428 $5 small motorcycles

 

Master Links Cabinet

At left is Myrons Mopeds master link cabinet, full of master links and half links from 20 other moped shops that closed in the late 1980’s in Southern California. Each of the drawers contains about 10 to 100 links. Each link was measured carefully and/or put through this gauntlet of Go/NoGo gauges, which are the actual master links and corresponding inner links contained in each drawer. From left to right, the order is smallest pitch first, smallest pin first (for that pitch), and the smallest inner width first (for that pitch and pin). Inner width for a master link is the space between the inside of the outer plates, which is slightly greater than the inner width for the chain, as in the chart below.

Notice that there are no “international” master links, like 04B (6mm) or 05B (8mm). These chains did not appear in California until the late 1990’s with the stand-up scooters, pocket bikes, and electric bikes and scooters, mostly from China.

 

 

C H A I N S   E X P L A I N E D

 

Chains

Chains for mopeds, motorized bicycles, gas or electric scooters, and minibikes are not on most application charts. For these oddball vehicles you have to measure and determine which chain size it takes, and how many links. Some Chinese made scooters and pocket bikes have 6.00mm pitch (not 6.35 = 1/4″) or 8.00mm pitch (not 9.53 = 3/8″). They look the same but don’t mesh on American sprockets. Another main source of confusion is pin diameter. Often several different chains interchange (fit the same sprocket), but have different pin diameters, pin lengths, and plate thicknesses. So while the entire chain interchanges, the individual links do not. A master link from one 415 chain often does not fit another 415 chain. Wow.

 

How to use the Myrons Complete Chain Size Chart : 

The dimensions of “every” roller chain, that might be used on motorcycles, scooters or bicycles, are listed below. The first three dimensions, pitch P (distance between pin centers), width W (distance between inside of inner plates), and the roller diameter D, are what matter for it to fit the sprocket. A wider chain (larger W) will work but not as good. European moped chains are #415 compatible. Asian moped chains are #420. Single speed bicycle chains are #410. Electric and small gas scooters are #25 (American) or #04B (International). Gas scooters and pocket bikes are #35 (American) or #06B (International). American made mini bikes are #35 or #41. American power equipment and industrial chains are #25, #35, #41, #40, #50, #60, and up. Modern motorcycle chains are #420, #428, #520, #525, #530, and #630. Small engine timing (cam) chains are #25 (American), or #04B (International).

Chain DimensionsScan up and down the chart looking for similarities. Notice how the pitch P, and roller width W, and roller diameter D, can be the same for many different chains. Too bad the pin diameter A can vary with the maker. Ouch. A pin too big won’t fit. A pin too small will fit, but will be loose. The only way to get the correct master link is by knowing the pitch P, roller width W, roller diameter D,  inner width W+2*T, and pin diameter A.

######### ##### ################################### ####### #########################
Wire Gauges    MYRONS COMPLETE CHAIN SIZE CHART made from many charts combined
BS10=3.25mm                 by Shaun Strahm  Feb 2013
US10=3.57 Chain  ANSI     ISO std      JIS std      BS
BS 9= 3.66   ISO=  International Organization of Standardization ####### #########################
US 9= 3.97   ANSI  American National Standards Institute bush B29.1   ISO 1395   JIS B1801
BS 8= 4.06   ASA  American Standard Association (old name) roller B29.1   ISO 606     JIS B1801
US 8= 4.37   BS =  British Standard or “Metric Chain” heavy use B29.1   ISO 3512
BS 7= 4.47   JIS =  Japanese Industrial Standards bicycle          ISO 9633   JIS D9417   BS 228
US 7= 4.76   JCAS  Japan Chain Association Standards motorcycle          ISO 10190  JCAS 1     BS 6715
BS 6= 4.88   DIN=  Deutsches Institut für Normung ####### #########################
US 6= 5.16  ISO 606 (DIN 8187) is European
 ANSI B29.1 (DIN 8188) = American
######## #### ################################ ####### #########################
           (dimensions in millimeters)       calcd master link
 Chain  A#   chain   roller   roller   pin   plate  inner  outer max     min         quotes = directly measured
  Size  or    pitch   width   diam  diam  thick  width  width pin    inner         ? = estimate or guess
 P x W ISO#  JIS#     P        W        D        A       T    W+2T     R dia  width Std   Source      Application/Notes
######## #### ################################ ####### #########################
CHAIN SIZE   #    pitch   width   roller   pin   plate  inner  outer master link     S M A L L E R      C H A I N S :
3/16x 3/32 03C 15      4.76   2.38   4.00   1.85   0.60   3.78   6.80 ISO   hzpt.com       industrial
M5 x 2.5 03B           5.00   2.50   3.20   1.49   0.60   3.70   7.40 BS/DIN beijingthc.com
M6 x 2.8 04B           6.00   2.80   4.00   1.85   0.60   4.00   7.40 BS/DIN beijingthc.com
M6 x 2.8 04B           6.00   2.80   4.00   1.85   0.60   4.00   6.80 BS    hzpt.com       industrial
M6 x 2.8 04B           6.00   2.80   4.00   1.83   0.61   4.02   6.30 BS    Allied-Locke   industrial
1/4 x 1/8 04C 25      6.35   3.18   3.30   2.30   0.75   4.68   7.60 ANSI hzpt.com   (bush, not roller)
1/4 x 1/8 04C 25      6.35   3.18   3.30   2.29   0.76   4.70   7.92 ANSI Diamond   (bush, not roller)
1/4 x 1/8 04C 25      6.35   3.18   3.30   2.28   0.76   4.74   8.64 ANSI docstoc.com  (bush, not roller)
1/4 x 1/8 04C 25      6.35   3.18   3.30   2.30   0.75   4.68   8.60 ANSI chainsprocketpulley.com
1/4 x 1/8 04C 25      6.35   3.28   3.25   2.27   0.80   4.60   7.95 ANSI “25” direct measure
1/4 x 1/8 04MA 25H    6.35   3.18   3.30   2.30   1.00   5.18   8.90 ANSI mdmetric.com (bush)
1/4 x 1/8 04MA 25H    6.35   3.18   3.30   2.30   1.00   5.18   9.00 ANSI hzpt.com   (bush, not roller)
1/4 x 1/8 04MA 25H    6.35   3.22   3.25   1.99   1.00   5.22   8.95 ANSI “DID 25SH”
1/4 x 1/8 04MA 25H    6.35   3.28   3.25   2.0?   1.00   5.18   8.95 ANSI “25H” (PC50 cam chain 42L)
M7.8 x 4.7 05MA 219    7.77   4.68   4.59   3.00   1.20   7.08   11.5 JCAS mdmetric.com (bush)
M8 x 3.0 05B           8.00   3.00   5.00   2.31   0.80   4.60   8.20 BS    hzpt.com       industrial
M8 x 3.0 05B           8.00   3.00   5.00   2.31   0.75   4.50   8.2? BS/DIN beijingthc.com
M8 x 3.0 05B           8.00   3.2      5.00   2.3     0.75   4.7   8.2? BS/DIN ocm.co.jp  industrial
M8 x 4.7 05T           8.00   4.70   4.73   3.05   1.25   7.20   11.0 ISO   hzpt.com       industrial
M8.5 x 4.8 05MC 270H  8.50   4.75   5.00   3.28   1.80   8.35   13.3 JCAS mdmetrics.com (bush)
3/8 x 5/32 old     9.53   4.00   6.28   3.23   1.25   6.50   10.9      “W” circled    (roller) Tomos A3
3/8 x 5/32 old     9.53   4.05   6.35   3.2?   1.30   6.65   10.6   “Regina Extra” (roller) Tomos A3
3/8 x 3/16 06C 35      9.53   4.76   5.08   3.58   1.27   7.30   11.8 3.57×7.7 ANSI Diamond       (bush, not roller)
3/8 x 3/16 06C 35      9.53   4.76   5.06   3.56   1.30   7.36   11.7 3.57×7.7 ANSI “ANSI 35”  (bush, not roller)
3/8 x 3/16 06C 35      9.53   4.76   5.08   3.58   1.27   7.30   12.7 3.57×7.7 ANSI docstoc.com  (bush, not roller)
3/8 x 3/16 06C 35      9.53   4.85   5.10   3.6?   1.35   7.55   11.9 3.57×7.7 ANSI “Regina ASA 35” (bush)
3/8 x 3/16 06C 35      9.53   4.99   4.99   3.6?   1.10   7.19   11.7 3.57×7.7 ANSI “KMC 35” (bush) Tomos A35/55
3/8 x 7/32 06B           9.53   5.72   6.35   3.28   1.32   8.36   13.4 BS/DIN ocm.co.jp  industrial
3/8 x 7/32 06B           9.53   5.72   6.35   3.28   1.30   8.32   13.2 BS    hzpt.com        industrial
3/8 x 7/32 06B           9.53   5.72   6.35   3.28   1.27   8.26   12.5 BS/DIN beijingthc.com
3/8 x 7/32 06BH           9.53   5.72   6.35   3.28   1.50   8.72   14.0 ISO   hzpt.com     industrial
3/8 x 1/4           9.53   6.35                obsolete ?
3/8 x 5/16           9.53   7.94   5.03            (bush, not roller)
3/8 x 3/8 06MA T3F    9.53   9.50   6.00   4.50   1.80   13.1   18.6        (China only) (bush)
######## #### ################################ ####### #########################
CHAIN SIZE   #    pitch   width   roller   pin   plate  inner  outer master link     B I C Y C L E   C H A I N S :
1/2×11/128           12.7   2.2?   7.75   3.6?   0.7?   3.6?   5.5 special ISO   wikipedia      bicycle 11sp Camp
1/2×11/128           12.7   2.2?   7.75   3.6?   0.8?   3.8?   5.9 special ISO   wikipedia      bicycle 10sp Camp
1/2×11/128           12.7   2.2?   7.75   3.6?   0.8?   3.8?   6.2 special ISO   KMC X10       bicycle 10 speed
1/2×11/128           12.7   2.2?   7.75   3.6?   0.9?   4.0?   6.6 special ISO   KMC Z9000   bicycle 9 speed
1/2 x 3/32           12.7   2.4?   7.75   3.58   0.9?   4.2?   7.1 special ISO   KMC Z72       bicycle 7-8 spd
1/2 x 3/32           12.7   2.4?   7.75   3.58   1.0?   4.4?   7.3 special ISO   KMC Z50       bicycle 6-7 spd
1/2 x 3/32           12.7   2.5?   7.75   3.58   1.0?   4.5?   7.8 none ISO   KMC Z30       bicycle 5-6 spd
1/2 x 3/32 082           12.7   2.40   7.75   3.63   1.0?   4.4?   8.1 none BS/DIN THC 47 beijingthc.com
1/2 x 3/32           12.7   2.45   7.70   3.57   1.00   4.45   7.5 none ISO   “Sedisport”    bicycle 5-6 spd
1/2 x 3/32           12.7   2.55   7.71   3.58   1.00   4.55   7.9 none ISO   “W.S.  7-6”   bicycle 5-6 spd
1/2 x 1/8 081         12.7   3.30   7.75   3.66   1.10   5.50   10.2 3.57×5.8 BS/DIN hangzhou bicycle 1-spd
1/2 x 1/8 43      12.7   3.40   7.75   3.63   1.02   5.40   9.4 3.57×5.8 ANSI THC 42 beijingthc.com
1/2 x 1/8 410    12.7   3.45   7.71   3.57   1.00   5.45   8.8 3.57×5.8 ISO  “TAVA  Taiwan” bicycle 1sp
1/2 x 1/8 old     12.7   3.46   7.74   3.57   0.95   5.36   9.2 3.57×5.8 ISO  “U” Union-Styria  bicycle
1/2 x 1/8 410    12.7   3.50   7.68   3.59   1.00   5.50   8.8 3.57×5.8 ISO  “KMC   Z”     bicycle 1-spd
######## #### ################################ ####### #########################
CHAIN SIZE   #    pitch   width   roller   pin   plate  inner  outer master link     M O P E D   C H A I N S :
1/2 x 3/16 42      12.7   4.80   7.77   3.63   1.02   6.84   10.8 3.57×7.2 ANSI OCM chain S Series
1/2 x 3/16 42      12.7   4.95   7.75   3.58   1.02   6.95  10.6 3.57×7.2 BS   “TYC 82D”    freight bicycle
1/2 x 3/16 42      12.7   5.00   7.74   3.57   1.02   7.00   11.1 3.57×7.2 old  “Sedis France” Peugeot 102
1/2 x 3/16 42H   12.7   5.00   7.72   3.58   1.27   7.54   12.? 3.57×8.0 ANSI “42 USA”
1/2 x 3/16 old     12.7   5.02   7.72   3.87   2.00   9.02   14.5       “Regina Extra”  h. duty Italian
1/2 x 3/16 old     12.7   5.04   7.68   3.88   1.50   8.04   13.2 3.87×8.2       “IRIS”     Derbi, Motobecane
1/2 x 3/16 415     12.7   5.02   7.72   3.89   1.70   8.42   13.8        “Regina 415” Tomos A3
1/2 x 3/16 415    12.7   5.04   7.75   3.92   1.25   7.54   11.7 3.92×7.9         “Sedis France” Peu 103, Batavus
1/2 x 3/16 415    12.7   5.03   7.71   3.95   1.25   7.53   11.8 3.92×7.9         “unmarked”  round rivets
1/2 x 3/16 415    12.7   5.05   7.73   3.96   1.25   7.55   12.2 3.92×7.9         “Sedis France” round rivets
1/2 x 3/16 415    12.7   4.88   7.75   3.96   1.30   7.48   12.5 3.92×7.9 ISO   ZHC chain     moped
1/2 x 3/16 415H  12.7   4.99   7.69   3.92   1.50   7.99   13.1 3.92×8.5 JCAS “KMC K415H”  bmx freestyle
1/2 x 3/16 415H  12.7   5.00   7.67   3.93   1.50   8.00   13.1 3.92×8.5 JCAS “C I C” Tomos A35 mid 00’s
1/2 x 3/16 415H  12.7   4.92   7.71   3.93   1.50   7.92   13.2 3.92×8.5 JCAS “RK 415H”  moped/freestyle
1/2 x 3/16 415H  12.7   4.95   7.68   3.93   1.50   7.95   13.3 3.92×8.5 JCAS “415H”  brownish color
1/2 x 3/16 415H  12.7   4.88   7.75   3.96   1.50   7.88   12.8 3.92×8.5 JCAS ZHC chain    moped
1/2 x 3/16 old     12.7   5.00   7.73   4.05   1.30   7.60   12.2 4.05×8.2        “W” circled Tomos A3 original
1/2 x 3/16 old     12.7   5.05   7.73   4.04   1.40   7.85   12.9 4.05×8.2        “Regina Extra”  Italian mopeds
1/2 x 3/16 old     12.7   5.33   7.69   4.07   1.82   8.97   14.7 4.05×9.2        “Regina (underlined)” Italian
1/2 x 3/16 084         12.7   4.88   7.75   4.09   1.80   8.48   14.8 4.05×9.2 BS    hangzhou      industrial
1/2 x 3/16 old     12.7   5.00  7.75   4.05   2.00   9.00   14.3 4.05×9.2        “Styria” Union Puch original
1/2 x 3/16 old     12.7   4.92   7.72   4.14   1.43   7.78   12.1 4.13×8.3        “unmarked”   industrial
1/2 x 3/16 old     12.7   5.11   7.72   4.14   1.90   8.91   14.5 4.13 x 9.4        “Regina (underlined)” Italian
1/2 x 3/16 old     12.7   5.35   7.68   4.14   1.90   9.15   14.5 4.14×9.6        “ČZ” silver  Tomos A35 late 90’s
1/2 x 3/16 old     12.7   4.88   7.75   4.18   1.50   7.88   12.8 4.14×8.3        chainsprocketpulley.com
1/2 x 3/16 old     12.7   5.0?   8.4?   4.43   1.4?   7.8?   14.? 4.43×9.2        “unmarked” unknown
1/2 x 3/16    086 Jawa  12.7   5.0?   8.43   4.43   1.82   8.6?   14.? 4.43×9.2        “unmarked” Jawa original
1/2 x 1/4 085 41      12.7   6.25   7.75   3.58   1.25   8.85   13.7 3.57×9.2 BS    hzpt.com     light duty
1/2 x 1/4 41      12.7   6.45   7.70   3.57   1.25   8.85   13.3 3.57×9.2 ANSI “MAX 41”   light duty
1/2 x 1/4 41      12.7   6.35   7.75   3.58   1.27   8.89   13.0 3.57×9.2 ANSI Diamond     light duty
1/2 x 1/4 08MA 420    12.7   6.35   7.75   3.96   1.50   9.35   14.5 3.92×9.7 ISO   ZHC chain   motorcycle
1/2 x 1/4 08MA 420    12.7   6.35   7.72   3.95   1.50   9.35   14.8 3.92×9.7 JCAS “EK 420”     Asian mopeds
1/2 x 1/4 08MA 420    12.7   6.35   7.74   3.93   1.50   9.35   14.7 3.92×9.7 JCAS “DID 420”   Asian mopeds
1/2 x 1/4 08MA 420H  12.7   6.35   7.75   3.96   1.80   10.0   15.7 3.92×11.0 ISO   ZHC chain   motorcycle
1/2 x 1/4 420H  12.7   6.35   7.70   3.96   2.00   10.4   17.3 3.92×11.0 JCAS EK chain      motorcycle
######## #### ################################ ####### #########################
CHAIN SIZE   #    pitch   width   roller   pin   plate  inner  outer master link     L A R G E R      C H A I N S :
1/2 x 5/16 08A           12.7   7.85   7.95   3.96   1.50   10.9   16.6 BS    hzpt.com      industrial
1/2 x 5/16 40      12.7   7.94   7.94   3.96   1.52   11.0   16.0 ANSI Diamond     industrial
1/2 x 5/16 40      12.7   7.9?   7.9?   3.92   1.5?   11.?   15.? ANSI “Japan 40”   industrial
1/2 x 5/16 08B           12.7   7.85   8.51   4.45   1.62   11.1   16.7 BS/DIN ocm.co.jp  industrial
1/2 x 5/16 428    12.7   7.97   8.43   4.45   1.50   11.0   16.4 JCAS “DMC 428”  motorcycle
1/2 x 5/16 08MC 428H  12.7   7.75   8.51   4.45   2.03   11.8   18.3 ISO   ZHC chain    motorcycle
1/2 x 5/16 08MC 428H  12.7   7.94   8.51   4.50   2.00   12.0   19.6 JCAS EK chain      motorcycle
5/8 x 1/4 10MA         15.9   6.25   10.2          2.40   11.1   18.9 ISO   mdmetric.com
5/8 x 1/4 520    15.9   6.35   10.2   5.24   2.00   10.4   18.6 JCAS EK chain      motorcycle
5/8 x 1/4 520    15.9   6.35   10.2   5.08   2.00   10.4   17.7 JCAS ZHC chain    motorcycle
5/8 x 1/4 520H  15.9   6.35   10.2   5.24   2.42   11.2   18.9 JCAS ZHC chain    motorcycle
5/8 x 1/4 520H  15.9   6.35   10.2   5.24   2.20   10.8   19.5 JCAS EK chain      motorcycle
5/8 x 5/16 525    15.9   7.94   10.2   5.08   2.03   12.0   18.7 JCAS ZHC chain    motorcycle
5/8 x 5/16 525H  15.9   7.94   10.2   5.24   2.42   12.8   20.4 JCAS ZHC chain    motorcycle
5/8 x 3/8 10A          15.9   9.40   10.2   5.08   2.03   13.5   20.7 BS    hzpt.com     industrial
5/8 x 3/8 10MB          15.9   9.40   10.2          2.00   13.4   20.9 ISO   mdmetric.com
5/8 x 3/8 50      15.9   9.53   10.2   5.08   2.03   13.6   20.1 ANSI Diamond      industrial
5/8 x 3/8 530    15.9   9.53   10.2   5.08   2.00   13.5   20.9 JCAS ZHC chain    motorcycle
5/8 x 3/8 530H  15.9   9.53   10.2   5.08   2.42   14.3   21.9 JCAS ZHC chain    motorcycle
5/8 x 3/8 530H  15.9   9.53   10.2   5.38   2.40   14.3   23.0 JCAS EK chain      motorcycle
5/8 x 3/8 532    15.9   9.53   11.1 JCAS                    (bigger roller)
5/8 x 3/8 10B           15.9   9.65   10.2   5.08 BS    Morse          industrial
5/8 x 3/8 12MA         19.1   9.40   11.9           2.40   14.2   25.9 ISO   mdmetric.com
3/4 x 3/8 630    19.1   9.53   11.9   5.95   3.20   15.9   25.2 JCAS EK chain      motorcycle
3/4 x 3/8 632    19.1   9.53   12.7 JCAS                    (bigger roller)
3/4 x 7/16 12B           19.1   11.7   12.1   5.72 BS    Morse          industrial
3/4 x 1/2 60      19.1   12.7   11.9   5.94   2.39   17.5   25.1 ANSI Diamond      industrial

 

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

Vintage Moped Chains: Vintage bikes often have obsolete chains, or they specify the size in an obsolete way. Vintage equipment used the inch size, pitch x width. Modern motorcycles all use chain model numbers, like 428, 520, 630. The above chart shows that connection. In mopeds, there are 18 different chains, all size 415, or 1/2 x 3/16. They have different pin diameters and inner widths. In modern mopeds there are about 3 or 4.

Moped Chain History: When a shop installs a new chain, they throw the leftover pieces in a box. As the years go by, layers of chains accumulate, with the oldest ones at the bottom, as long as no one mixes up the pile.  That’s one way to “date” chains. At Myrons, certain boxes of parts have been untouched since about 1985 to 1995. Only one little scrap of modern 415H chain was in that material, from those years. Not even 415H master links were in that time zone. This little scrap is what Shaun believes to be the earliest example of a 415H chain. Shown below on the Motobecane sprockets, it’s gold and  says “Taiwan”. Taiwan bicycle products and machinery blossomed in the 1980’s. China made components came out about 15 years later.

Italian Chain History: At least five different Regina chains are original on 1970’s and 80’s Italian made mopeds, two that say “Regina Extra” and three that say “Regina” underlined.  See their pictures above. They all have different master links! Craziness!

Regina pin x width   plates      name                         closest master link                 next closest 
3.96  x  9.0      2.0    Regina Extra              4a.  reg1 (3.96 x 9.2-9.5)     420H (3.93 x 9.8)
3.89  x  8.4      1.7    Regina 415                3e. 415H (3.93 x 8.5) 
4.05  x  7.9      1.4    Regina Extra              5a.  reg2 (4.05 x 8.2-8.6)     415H (3.93 x 8.5)
4.05  x  9.0      1.8    Regina (underline)     5c.  puch (4.05 x 9.2-9.4)     420H (3.93 x 9.8)
4.14  x  8.9      1.9    Regina (underline)     6a. tom1 (4.14 x 9.4-9.6)

Tomos Chain History: At least seven different Tomos chains have been used over the years.

Regina Underlined Tomos A3 1970's

Regina
Italy
1970’s
3.89 x 8.4

W Circled early Tomos

W Circled
Germany
late 1970’s
4.05 x 7.9

W Circled late Tomos A3

W Circled
Germany
1980’s
4.14 x 9.4

ČZ chain Tomos A35 4.14 x 9.6

ČZ chain
Slovenia?
late 1990’s
4.14 x 9.6

CIC 415H Tomos A35 early 2000's 3.93 x 8.5

CIC 415H
Taiwan?
mid 2000’s
3.93 x 8.5

plain 415H Tomos A55 2007-on 3.93 x 8.5

415H
China?
late 2000’s
3.93 x 8.5

W Circled Germany 2013-on 4.14 x 9.6

W Circled
Germany
2013-on
4.14 x 9.6

 

Above, seven Tomos chains take three different master links. The pins range from 3.89 to 4.14mm thick. The inner width ranges from 7.9 to 9.6mm. “Inner width” means measured between the inside walls of the outer plates. A wider inner link will not fit inside a narrow outer link.

First the “Regina underlined” (3.89 x 8.4) on early A3, and “W circled” (4.05 x 7.9) also on early A3, then “W circled” (4.14 x 9.4) on late A3, then ČZ (4.14 x 9.6) on A35, then CIC 415H on late A35, and now plain 415H (3.93 x 8.5) on A55 models. The chains got thicker and wider and taller on the outside, as the decades progressed. The pins got thicker, and then thinner, and now thick again: 3.89 ->4.05 -> 4.14 -> 4.14 -> 3.93 ->3.93 ->4.14. Same thing with inner width: 8.4 -> 7.9 -> 9.4 -> 9.6 -> 8.5 ->8.5 ->9.6. Perhaps this is why Tomos stopped selling master links…

 

MB Front Sprockets With Rubbers

Motobecane front sprockets with rubber rings.
Left, the original IRIS chain, meshes correct.
Right, modern 415H, with taller plates,
rides up too high and does not mesh.

Motobecane front sprockets without rubbers.

Motobecane front sprockets without rubbers.
Left, the original IRIS still meshes good.
Right, the 415H meshes good now.
The end roller is cut away to see the fit.

 

 

 

 

 

 

 

 

 

Motobecane:  1970’s-1980’s Motobecane Mobylette 40, 50, or 50V mopeds, the front sprocket behind the large pulley has some rubber rings that interfere with modern 415H chains. Fortunately the two 1 1/4 inch rubber rings, one on each side of the sprocket, which can be removed with something like a curved dental pick. This issue of a chain not meshing because of  (unecessary) rubber noise dampener rings contacting the outer plates instead of the sprocket contacting the rollers, is one that probably occurs on other similar machines. Their name might begin with P…

Peugeot 103: Sometimes the newer “H” rated chains do not fit until after the bike is rode for a few minutes. The two rubber rings on either side of the original sprocket interfere with the larger outer plates on the 415H chain, causing the chain to run higher and not mesh well. After riding awhile the chain noise gets less, as the rubbers get squished and interfere less. Still, it is better to remove the pulley, and remove the rubber rings, shown at right, to have a smooth running chain.

Peugeot 102 front sprocket with original rubber rings. 415H chain does not mesh.

Peugeot 102/103 front sprocket with original rubber rings. 415H chain does not mesh.

Peugeot 102 front sprocket with rubber rings removed.

Peugeot 102/103 front sprocket with rubber rings removed. 415H wraps around fully.

Peugeot 102: This is the only US-model moped that uses a 42 chain, same sprocket as a 415 (1/2 x 3/16), but lighter duty (thinner pins, thinner and smaller plates). Sedis made both 415 chain for Peugeot 103, and 42 chain for the lighter weight Peugeot 102. Old Sedis chains are often cracked. Then they break/throw the chain. No fun. To use a modern 415H chain, the two rubber rings on either side of the sprocket must be removed, or it won’t mesh properly. See photos at right.

Motorized Bicycles 415 – Only Kind: Certain modern motorized bicycle gas engine kits use a 415 chain that passes very close to the engine case on both sides. These do not have enough room for the wider-on-the-outside 415H. They require a 415.

Motorized Bicycles:  415 and 410 Mixed: Certain modern motorized bicycle gas engine kits have a wide engine sprocket for 3/16 and a thin rear sprocket for a 1/8 chain. A 415 or 415H chain works but would be expected to have less retention (it would come off easier).

Motorized Bicycles:  Long Chain Runs: Motorized bicycles with long chain runs need chain guides and/or chain tensioners, or else the chain comes off when it slaps going over bumps, or when the frame or wheel flexes, or when the engine mounts shift/slip. The kits don’t usually come with any.

American Made Minibikes: There were many different manufacturers of minibikes back in the 60’s and 70’s but most of them used either a 35, 40, 0r 41 chain. Number 35 was used on most all 4-5-6 inch wheel minibikes while 41 was used on larger minicycles such as Rupp Roadster II and Speedway. Number 41 chain will not run on a number 40 sprocket. Number 40 chain will run on a number 41 sprocket but it will be wider than needed.

Fun Karts and Minibikes: Many chains have the chain size stamped directly on the chain links. #35, 40, 41 and 420 chain are used in the Fun Kart and Mini Bike industry. An 11 or 12 tooth clutch sprocket usually indicates the use of #35 chain. 10 tooth clutch sprockets usually indicate the use of #40, 41 or 420 chain.

More about ANSI chains:   http://chain-guide.com/applications/1-1-1-ansi-roller-chains.html

More about sprockets:  http://www.gizmology.net/sprockets.htm

More about International chains:  http://www.renold.com/Support/ChainInformationCentre/Chain_Standards.asp

 Why all of this madness about chains?   All through the 1970’s and 1980’s when you needed a master link for your moped, you had to get it from a dealer that sold that kind, or else you had to bring in your chain and hope they could find one that fit. If you had a Motobecane and you needed a master link, you could not get one from a Puch dealer, even if you showed them your chain. Their master links had thicker pins. For decades, owners have been frustrated when they bought a #415 master link for their chain, and it did not fit. That’s because there are 18 or so different 415-compatible chains. By the 1990’s no moped shop sold master links, instead they made you buy a whole chain. Thankfully, there is much better standardization in this century, in moped chains. But there are still a lot of older moped chains and substitutes that are all different. So it’s still not possible to tell (guess) what master link a customers moped needs over the phone. Some things never change…