Myrons Mopeds

Contents:
1. Top End Hardware
2. Woodruff Keys 
3. Engine Nuts
4. Shim Washers
5. Circlips (Snap Rings)
6. Variator Weights

 

---

1   T O P   E N D   H A R D W A R E

 

P I S T O N   P I N S
∅10  (9.98) x 32.0  $10.0  Tomos A3 #201627
∅12(11.98) x 30.0  $10.0  Derbi #00.00.000, Solex
∅12(11.98) x 30.5  $10.0  Sachs 504,505 1A,1B
∅12(11.98) x 31.3  $9.50  Minarelli V1   #4480
∅12(11.98) x 31.5  $10.0  Puch E50,ZA50 #331.110.0111
∅12(11.98) x 31.5  $0.00  Morini #26-8001, Demm, Vespa #132233
∅12(11.98) x 31.8  $12.0  Sachs 504,505 1C,1D
∅12(11.98) x 32.0  $10.0  Tomos A35,A55 #227501
∅12(11.98) x 32.4  $10.0  Garelli H1,H2,G2,V2
∅12(11.99) x 32.9  $10.0  Laura M48,M56 #480501
∅12(11.98) x 32.9  $10.0  Peugeot 102,103 #27194
∅12(11.98) x 34.5  $0.00  Minarelli V1L #4481
∅13(12.98) x 30.0  $10.0  Motobecane #F15094
∅14(13.97) x 32.0  $10.0  Jawa #28-1221

 

---

Piston pin clips: 2-tail, 1-tail, no tail, circlip

P I S T O N   P I N   C L I P S
clip ∅10 x 0.9 no tail   $3.00  Honda 13115-147-000
clip ∅10 x 1.2,  1 tail   $1.00  generic 132038
clip ∅10 x 1.2,  2 tail  $1.00 Tomos 032038
clip ∅12 x 1.2,  2 tail   $1.00  Tomos 032039
clip ∅12 x 1.2,  1 tail   $1.00  Minarelli 4490, Morini 10.4001
clip ∅12 x 1.2 no tail   $1.90  generic for Honda 13115.156.000
circlip ∅12 x 1.0 tail    $1.00  Peugeot 22309, Piaggio S.6612
clip ∅13 x 1.2,  1 tail   $1.50  Motobecane 00658, generic 132039
clip ∅14 x 1.2,  1 tail   $1.50  generic 633848

Choices: 1 or 2 tails is easier to install or remove. No tail is better for high RPM, where the tail rubs and can break off. No tail clips require a notch in the piston for removal. Circlip type (aka snap ring or retaining ring) is more secure and takes less skill, but requires special pliers and weighs more.

Important: So the clip doesn’t come out and destroy the engine, it must make a “snap” or “click” sound when it snaps into the groove. Mild pulling on the clip tail with a needle-nose pliers should not dislodge it from the clip groove. If it doesn’t click, then it has lost it’s spring tension, or maybe the piston pin is over part of the clip groove. Wire clips can be bent back, to restore tension.

 

---

Nuts: M5x25, M6x5, M6x6, M6x8, M6x8, M6x18

H E A D  o r  E X H A U S T   N U T S
steel nut  M5 -0.8 x 5   $0.40  regular
steel nut  M5 -0.8 x 25 $1.50  tall, Morini 13.3023
steel nut  M6 -1.0 x 5   $0.30  regular
steel nut  M6 -1.0 x 6   $0.60  thick
brass nut M6 -1.0 x 8   $2.50  thick, Puch #902.2919
brass nut M6 -1.0 x 8   $1.80  thick, sharp corners
steel nut  M6 -1.0 x 18 $1.00  tall, coupling nut
steel nut  M7 -1.0 x5.5 $0.60  regular
steel nut  M7 -1.0 x 7   $0.60  thick, Grimeca hub sprocket
steel nut  M7 -1.0 x 10 $1.50  thick, Motobecane #00011

Choices: Tall nuts (aka coupling nuts) are for hard to reach places. Thick nuts are for the head. They have more strength, and can hold more torque. Brass nuts are for the exhaust flange. They expand more when hot and stay tight.

 

---

Cylinder studs, oriented top end at right

C Y L I N D E R   S T U D S
M6  x 105  $4.00  Puch E50, ZA50 1970-86, #360.110.0341
M6  x 107  $4.20  Laura M56 engine, Trac 1982-86 #E1-14
M6  x 110  $3.50  generic for Puch, M56, others #407801
M6  x 114  none    Jawa 207 engine 1970-83+ #28-1112
M6  x 115  $7.50  Laura M48 engine,  Batavus  #829680
M6  x 116  $7.50  Honda 92700-06115
M6  x 130  $4.00  unknown app
M6  x 136  $4.50  Minarelli V1 series engines, MMI #5530
M6/7  105  none  generic for stripped Puch case #6/7×105
M6/7  115  none  generic for Tomos A55 2002-13, #233716
M7  x 103  $5.00  Garelli horizontal-cyl eng, #205001.3.486
M7  x 112  $2.50  Peugeot 103, 102 eng. 1975-83 #827022
M7  x 113  $5.00  Garelli vert.-cylinder eng. #000351.3.486
M7  x 115  $2.80  Tomos A3, A35 engines 1974-06, #205386
M7  x 117  $4.50  Derbi Variant engines 1974-86, #31.30.050
M7  x 120  $3.50  Vespa (Piaggio) #S.595
M7  x 129  $4.00  Motobecane 50V, 50, 40 engines #14716

C Y L I N D E R   B O L T S
M6 x 100  none    Honda PA50 cylinder hex bolt 95801-0610000
M6 x 120  $5.00  unknown app cylinder hex bolt

 

---

Studs, oriented top at right

E X H A U S T  or  I N T A K E   S T U D S
M5  x 23  $3.50  Jawa exhaust #28-1410
M5  x 27  $3.00  Jawa intake #28-1408
M5  x 30  $2.50  Morini exhaust #23-5014
M5  x 33  $2.00  
M5  x 55  $2.00  
M5  x 62  $3.00  Motobecane air filter
M6  x 24  $2.00  12-4-8 uneven ends 
M6  x 26  $2.00  12-4-10 uneven ends 
M6  x 28  $3.00  12-4-12 Minarelli
M6  x 28  $2.00  14-4-10 uneven ends 
M6  x 30  $3.00  12-6-12 Tomos A55 exhaust, others
M6  x 32  $2.50  14-4-14 
M5  x 62  $3.00  Motobecane air filter
M6/8  23  $5.50  step-stud for stripped thread repair
M8  x 33  $2.00  1.00 and 1.25 thread
M10 x44  $2.00  both ends 1.25 thread

 

---

223440 and 233718

C E N T E R I N G   T U B E S   a n d   P I N S
type outer inner length price      applications
pin   ∅6.00 ∅6.0 x 19  $2.50  Tomos #037.290 A3 clutch & case
tube ∅9.74 ∅6.2 x 16  $4.50  Tomos #223440 A35/A55 clutch & mag

 

Tomos A55 cylinder

E L A S T I C   C E N T E R I N G   S L E E V E S
outer inner length price      applications
∅7.7   ∅6.7 x 15   N/A     Puch #328.910.1081 Magnum cylinder 
∅8.2   ∅7.2 x 16  $2.00  Tomos #233718 A55 cylinder base

Note: These elastic sleeves get smaller when installed, like piston rings.
The installed diameter is 8.2 but the free diameter is like 8.7 mm.
You can see the large gap in the photo, that closes when installed.

 

---

2   W O O D R U F F    K E Y S

 

Loose your woodruff key? You’re not alone. These tiny things have a huge importance. When a magneto flywheel key is missing, and the nut is not fully tight, the flywheel can slip and cause the sparks to happen at the wrong time.

   
1. top: normal, bottom: beveled  2. dimensions  3. key groove

 

M86 3 x 5, M82 2.5 x 3.6, M81 2 x 3.7 M80 2 x 2.8

 

M96 3 x 5 beveled, M96a 3 x 5 beveled on top, M86 3 x 5

 

M00   $0.00 W  x  H  x  L  x  D   edge type

M80   $2.00 2.0 x 2.8 x 6.9 ∅7   normal
Garelli 1-spd 273.511.0046, CEV 6933 flywheel

M81   $2.00 2.0 x 3.7 x 9.4 ∅10 normal
Sachs 504 (KTM), CEV 6949 flywheel
Sachs 504, sm Bosch 0212 010 001 flywheel
Kreidler, sm Bosch 0212 010 002 flywheel
Italjet + Morini, Bosch 0212 010 003 flywheel
Batavus/Trac M56, sm Bosch 0212 010 004 flywheel

M83   $4.50 2.5 x 3.0 x 9.0 ∅10 normal
Garelli 2-spd 271.018.00, CEV 6939 flywheel

Mmo  none  2.5 x 3.1 x 9.2 ∅10 beveled
Morini #12-7025 MO1,MO2,M1   use M83

M82   $2.00 2.5 x 3.6 x 9.6 ∅10 normal
Derbi ’76-86 Motoplat & ’86-89 CEV flywheels

Mnc   none  3.0 x 2.5×13.0 ∅20 .
Honda NC50 flywheel

M88  $3.00 3.0 x 6.4 x 15.4 ∅16 normal
Trac #81031 M56 trans shaft

M95   none  3.0 x 3.0×10.2 ∅13 beveled
shorter and longer

Mmi   none  3.0 x 3.7 x 9.6 ∅10 normal
Minarelli #4720, CEV 6932 flywheel   use M85

M85   $2.00 3.0 x 3.6 x 9.5 ∅10 normal
Puch #900.4503, big Bosch flywheel
Sachs 505 big Bosch flywheel

Min    $7.00 3.0 x 4.6×12.2 ∅13 beveled
Indian AMI-50 E606-00-50, WTEMCO flywheel

M96   $5.00 3.0 x 4.9×12.4 ∅13 beveled
pre-’78  Vespa #267 flywheel & rear clutch

M96a $2.00 3.0 x 4.9×12.4 ∅13 top beveled 
post-78 Vespa #267 flywheel & rear clutch

M86   $1.50 3.0 x 4.9×12.4 ∅13 normal
Puch 1-sp clutch
Batavus M48 big Bosch flywheel
Batavus/Trac M56 clutch
Kinetic flywheel & rear pulley

M88   none  3.0 x 6.5×15.5 ∅16 normal
Batavus/Trac M56 rear pulley

Mpa   none  3.0 x 2.5×12.5 ∅??  ??
Honda Hobbit flywheel

M89   none  4.0 x 5.0×12.5 ∅13 normal

M100 none  4.0 x 5.5×18.0 ∅19 normal

M90   none  4.0 x 6.5×15.4 ∅16 normal
Garelli 217.036.00 2-spd primary shaft

M97   none  4.0 x 6.5×15.5 ∅16 beveled

Mtr    $4.00 round (roller)  ∅3 x 4
 Tomos 200048 all years, all flywheels

Mts    $2.00 straight 5.0 x 5.0 x 12.0
Tomos 044835 countershaft key (race track shaped)

 

 

---

3   E N G I N E    N U T S

These are the engine nuts that go on rotating shafts, rather than stationary nuts, like the head nuts. For head nuts see Engine Top End. Some are very specific and others are more universal.   

 

 

 

---

ref  thread R or L   hex   E N G I N E  N U T S
ref  0 thread 0 length     price   o.e.m. part#

---

A1 M8 - 1.00 R   8 13  $0.80 2842.001.000
plain nut Sachs 504, Batavus/Trac M56 flywheel

A2 M8 - 1.00 R   9 12  none  000361.8.446
tall nut Garelli ’74-76 1-speed flywheel

---

B1 M8 - 1.25 R   8 13  $0.80 020108
plain nut Vespa rear pulley, non-variator clutch

B2 M8 - 1.25 R   7 24  $7.00 131331
thin wide Vespa Bravo/Grande/Si variator

B3 M8 - 1.25 R 16 15  $10.0 13-3007
tall nut Morini MO1, MO2, M1, M101,
tall nut S5, S5K, S5K2, S5R, S5N, S5E, S5T, S5GS

B4 M8 - 1.25 L   8 13  none  00 20 161
plain nut Odyssey (Solo) flywheel

---

C1 M9 - 1.00 R   6 14  $4.00 4430 = 49.0326.0
plain nut Minarelli ’69-77 stub plane clutch use locktite

C2 M9 - 1.00 R   6 14 $10.0 5040 = 49.0311.0
castle nut Minarelli pre-’78 stub plane clutch use C1

C3 M9 - 1.00 R 12 14  none  6270 = 49.0311.0
flange Minarelli ’78 to 9-79 early cone clutch use C1

C4 M9 - 1.00 R 12 14  none  G7090
spacer nut Benelli ’65-73 GM, GK, GK65 use C8

C5 M9 - 1.00 R 14 15  none  I9020
spacer nut Benelli ’65-77 4M, 4MS, 4M65 use C8

C6 M9 - 1.00 R 16 14  $9.50 UI7090
spacer nut Benelli ’70-80 G2, G2K use C8

C7 M9 - 1.00 R   9 12  none  205011.8.446
tall nut Garelli horiz 1-sp flywheel use C8

C8 M9 - 1.00 R 09 12  $7.00 C8
tall nut replacement for C1 to C7

---

D1 M10-1.00 R   5 17  $4.00 D1
thin nut replacement Motobecane 20767

D2 M10-1.00 R   5 19  $4.00 D2
thin nut replacement Motobecane 20767

D3 M10-1.00 R   6 14  $8.00
thin nut Derbi 1976-86 variator/clutch nut

D4 M10-1.00 R   6 17  $4.00 828010
thin nut Sachs 504 & 505 and Batavus M48 clutch nut

D5 M10-1.00 R   7 21  $7.00 49812
flange nut Peugeot clutch nut

D6 M10-1.00 R   8 14  $5.00 901.2943
flange nut Puch flywheel nut

D7 M10-1.00 R   8 17  $1.80 900.2011
plain nut Solo, Sachs 505, Laura M48 flywheel
plain nut Tomos pre-’87 flywheel, Laura M56 pulley
plain nut Puch 1-spd and Solo clutch

D8 M10-1.00 R   9 17  $3.00 D8
plain nut replacement Motobecane 24284

D9 M10-1.00 R 14 14  $7.00 000315.8.446
tall nut Garelli 2-spd 00315.8.446, flywheel

D10M10-1    R 15 15   $4.00 D10
tall nut replacement flywheel

D11M10-1    R 15 16   $12.0 46768
tall nut Peugeot flywheel use D10

D12M10-1  R 14.5 19  $3.00 D13
spacer nut replacement Motobecane 17567

D13M10-1    R 17 19   $3.00 D14
spacer nut replacement Motobecane 24258

D14M10-1    R 18 17   $10 
tall nut Derbi flywheel pre-86 use D10

---

E1  M10-1.25 R   6 17 $2.50 4840 = 49.0323.0
thin nut Minarelli sprocket, Honda NC50 flywheel
thin nut Morini MO1, M1, MO2 clutch 13-1003

E2 M10-1.25 R   8 14  $2.50 H210-00-50
plain nut Indian flywheel
plain nut Honda PA50 clutch and flywheel

E4 M10-1.25 R 14 15  $7.00 4750 = 49.0312.0
tall nut Minarelli flywheel nut

---

F1 M10-1.00 L   8 14  $12.0 0F0.2600.401
plain nut Derbi flywheel and rear pulley 1986-91

F2 M10-1.00 L 12 32  $10.0 143195
special Motobecane flywheel 1980-later

F3 M10-1.00 L 15 10  $13.0 17429
square hole Motobecane flywheel 1974-1979

F4 M10-1.00 L 30 17  none   0F0.2610.401
special Derbi clutch 1986-91 “Start” flat case reed

F5 M10-1.25 L   6 15  $2.00 6275
thin nut Minarelli after Sep ’79 cone clutch

---

G1 M11-1.00 R  6.5 17  $2.00
thin nut Replacement axle nut

G2 M11-1.00 R   8 14  $6.00 17454
flange nut Motobecane clutch (non-var)

G3 M11-1.00 R 21 14  $12.0 17455
spacer nut Motobecane clutch (variator)

---

H1 M12-1.00 R   6 24  $3.00 H1
thin nut Replacement axle nut

H2 M12-1.00 R   7 19  $2.50 H2
thin nut Replacement axle nut

H3 M12-1.00 R   7 17  $9.00 201001.2.917
thin nut Garelli 2-speed clutch

H4 M12-1.00 R   7 19  $3.00 0242.124.000
thin nut Sachs sprocket

---

I1 M12-1.25 R   6 17  $10.0 13-1002
thin nut Morini MO1 sprocket

I2  M12-1.25 R 10 19  $3.00
plain nut Batavus/Trac M56 sprocket

---

J1 M14-1.00 R6.5 19  $3.00 H214-00-50
thin nut Indian clutch nut

J2 M14-1.00 R   7 19  $5.00 200141
thin nut Tomos A3, A35, A55 countershaft

---

K1 M14-1.50 R   5 19  $8.00
thin nut Derbi rear pulley 1976-1986

---

L1 M16-1.50 R   8 24  $7.00 902.2922
thin nut Puch 2-spd clutch nut

 

---

4.  W A S H E R S   a n d   S H I M S

 

 

 

 

 

 

 

 

 

 

 

Shim (precision) washers, in blue, are always required. They are all the same size for every machine.
Adjustment shim washers, in black, are “as required”. There are different sizes for each machine.

05.1 x 11.5 x 0.5.00  0.0.0.000 G369 $1.50 Benelli start clutch

10.1 x 16.0 x 2.00  0.0.0.0.223469 $3.00 Tomos A35-A55 trans cover, rear
10.1 x 14.0 x 0.20  0.0.0.0.209075 $5.00 Tomos A3-A35-A55 trans cover, rear
10.1 x 14.0 x 0.50  0.0.0.0.209076 $5.00 Tomos A3-A35-A55 trans cover, rear
10.1 x 18.0 x 1.00  0.0.0.0.175751 $2.00 Piaggio variator hub w/helical gears
10.1 x 20.0 x 0.60  321.1.13.637.1 $7.00 Puch ZA50 trans cover, rear
10.1 x 20.0 x 0.80  350.2.13.642.1 $8.00 Puch ZA50 trans cover, rear
10.1 x 20.0 x 1.00  321.2.13.637.1 $7.00 Puch ZA50 trans cover, rear
10.1 x 21.8 x 0.80  0.0.0.0.0. 4830 $5.00 Minarelli V1 sprocket, under nut
10.1 x 22.0 x 0.60  0.0.0.00.  5030 $5.00 Minarelli V1 clutch, under nut
10.1 x 24.0 x 0.80  0.0.0.0 491088 $5.00 Laura M56 drive shaft
10.3 x 22.4 x 1.20  0.0.0.0 120214 $3.50 Vespa-Piaggio rear var-clutch

12.1 x 16.0 x 0.1 0000000 0000000 N/A    Kreidler clutch drum
12.1 x 16.0 x 0.2 0000000 0000000 N/A    Kreidler clutch drum
12.1 x 16.0 x 0.3 0000000 0000000 N/A    Kreidler clutch drum
12.1 x 17.0 x 0.4  0.0.00.0.0  5730 none  Minarelli V1 idler shaft
12.1 x 21.0 x 0.2 0000000 25-4026 N/A    Morini MO2 trans
12.1 x 23.5 x 1.0 0000000 103556 $2.50 Vespa front pulley-clutch
12.1 x 24.0 x 0.5 0000000 480899 $7.00 Laura M48 clutch washer (25 & 30mph)
12.1 x 24.0 x 0.8 000000  480899a $5.00 Laura M48 clutch washer (as required)
12.05×23.95×0.5  000000 490814 $7.00 Laura M56 clutch washer
12.05×23.95×0.8  000000 490813 $5.00 Laura M56 clutch washer (as required)

13.2 x 18.0 x 0.2  000000 25-4040 none  Morini MO2

13.9 x 24.0 x 1.00  0.0.0.0.175747 $2.00 Vespa variator rear hub, after 1980
13.7 x 28.0 x 1.00  0.0.0.0.103386 $7.50 Vespa variator rear hub, before 1980
14.1 x 20.0 x 2.00  0.0.0.0.223468 $4.00 Tomos A35-A55 clutch, inner

15.2 x 20.0 x 0.08  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.13  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.20  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.30  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.50 0 0246.009.001 $4.00 Sachs 505 left crank, behind bearing
15.2 x 20.0 x 0.80  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 1.00  0.0.0.0.000000 $4.00 unknown app

15.2 x 21.7 x 0.50  0.0.0 old14562 $6.00 Motobecane clutch, var and 1-s
15.2 x 21.7 x 0.80  0.0.0.0.014562 $7.00 Motobecane clutch, var and 1-s
15.2 x 21.7 x 0.10  0.0.0.0.014931 $5.00 Motobecane clutch, var and 1-s
15.2 x 21.7 x 0.25  0.0.0.0.014932 $5.00 Motobecane clutch, var and 1-s
15.2 x 21.7 x 0.45  0.0.0.0.014933 $5.00 Motobecane clutch, var and 1-s

15.2 x 22.0 x 0.60  000.0. 25.4005 none  Morini MO1, MO2 trans
15.2 x 22.0 x 0.60  321.1.13.627.1 none  Puch ZA50 trans cover, front
15.2 x 22.0 x 0.80  321.2.13.627.1 $7.00 Puch ZA50 trans cover, front
15.2 x 22.0 x 1.00  321.3.13.627.1 $8.00 Puch ZA50 trans cover, front
15.2 x 22.0 x 1.10  0.0.0.901.3963 $9.00 Puch E50 clutch, outer
15.2 x 22.0 x 1.30  0.0.0.901.3929 $8.00 Puch E50 clutch, outer
15.2 x 22.0 x 1.50  0.0.0.901.3924 $7.00 Puch E50 clutch, outer
15.2 x 22.0 x 1.70  0.0.0.901.3930 $5.00 Puch E50 clutch, outer
15.2 x 22.0 x 1.80  0.0.0.901.3028 $5.00 Puch E50 clutch, outer
15.2 x 22.0 x 1.85  0.0.0.901.3972 $3.00 Puch E50 clutch, outer
15.2 x 22.0 x 1.90  0.0.0.901.3942 $2.00 Puch E50 clutch, outer
15.2 x 22.0 x 1.95  0.0.0.901.3973 $2.00 Puch E50 clutch, outer
15.2 x 22.0 x 2.00  0.0.0.901.3970 $5.00 Puch E50 clutch, outer
15.2 x 22.0 x 2.10  0.0.0.901.3049 $7.00 Puch E50 clutch, outer
15.2 x 22.0 x 2.20  0.0.0.901.3971 $8.00 Puch E50 clutch, outer
15.2 x 28.0 x 1.20  0.0.00 .131514 $2.00 Vespa rear hub, var and non-var
15.4 x 20.8 x 0.50  0.0.00 .113681 $5.00 Vespa crank washer, 1 per side
15.5 x 31.0 x 0.85  0.0.00    14588 $7.00 Motobecane Dimoby clutch

16.2 x 26.0 x 0.60  0.0.0.000 5790 none  Minarelli V1 pedal shaft
16.2 x 23.5 x 0.60  0.0.0.0.103557 $2.50 Vespa front pulley-clutch
16.2 x 24.0 x 1.00  0.0.0.0.206391 $3.00 Tomos A3-A35-A55 pedal shaft
16.2 x 24.0 x 0.20  0.0.0.0.209087 $$.$$ Tomos A3-A35-A55 pedal shaft
16.2 x 24.0 x 0.50  0.0.0.0.200175 $$.$$ Tomos A3-A35-A55 pedal shaft

16.2 x 27.8 x 1.00  321.1.13.624.1 $9.00 Puch ZA50 2-speed main shaft, inner

16.2 x 30.0 x 0.10  0.0.00.0.14863 none  Motobecane pedal shaft
16.2 x 30.0 x 0.30  0.0.00.0.14865 $7.00 Motobecane pedal shaft
16.2 x 30.0 x 0.40  0.0.00.0.45818 $$.$$ Peugeot 102-103 clutch
16.2 x 30.0 x 0.60  0.0.0.00.45819 $$.$$ Peugeot 102-103 clutch
16.2 x 30.0 x 0.75  0.0.00.0.15001 $$.$$ Motobecane pedal shaft
16.2 x 30.0 x 0.80  0.0.0.00.45820 $$.$$ Peugeot 102-103 clutch
16.2 x 30.0 x 1.00  0.0.0.00.45821 $$.$$ Peugeot 102-103 clutch

16.2 x 32.0 x 2.00  ..200001.7.187  N/A   Garelli H1/H2 pedal shaft

16.8 x 30.5 x 1.00  .0 321.112.6141  N/A   Puch 2-speed start inner
16.8 x 30.5 x 1.00  .0 321.212.6141  N/A   Puch 2-speed start inner

17.0 x 24.0 x 1.00  .0 337.113.1751  N/A   Puch 2-speed start inner

17.2 x 24.0 x 0.10  0.0.0.0.212957 $5.00 Tomos pre-1986 A3 crank, left or right
17.2 x 24.0 x 0.15  0.0.0.0.212958 $8.00 Tomos pre-1986 A3 crank, left or right
17.2 x 24.0 x 0.20  0.0.0.0.212959 $9.00 Tomos pre-1986 A3 crank, left or right
17.2 x 24.0 x 0.50
17.2 x 24.0 x 1.10  0.0.0.901.3943 $9.50 Puch E50 1-speed clutch, inner
17.2 x 24.0 x 1.30  0.0.0.901.3927 $7.00 Puch E50 1-speed clutch, inner
17.2 x 24.0 x 1.50  0.0.0.901.3923 $7.00 Puch E50 1-speed clutch, inner
17.2 x 24.0 x 1.70  0.0.0.901.3928 $5.00 Puch E50 1-speed clutch, inner

18.0 x 22.4 x 0.20  44809-044-000 none  Honda ∅80 front brake speedo gear
18.0 x 22.4 x 0.20  000 1150-5079 none  Taiwan ∅80 front brake speedo gear

18.2 x 24.0 x 0.05  0.0.0.900.3992 $9.50 Puch ZA50 2-speed crank, left
18.2 x 24.0 x 0.10  0.0.0.900.3922 $8.00 Puch ZA50 2-speed crank, left
18.2 x 24.0 x 0.20  0.0.0.900.3923 $9.50 Puch ZA50 2-speed crank, left
18.2 x 24.0 x 0.30  0.0.0.900.3907 $4.00 Puch ZA50 2-speed crank, left

18.5 x 24.0 x 0.12
18.5 x 24.0 x 0.20
19.0 x 22.7 × 0.80  0.0.0.0 120215  N/A   Vespa-Piaggio rear var-clutch

18.9 x 23.9 x 0.1  0.0.0.000 01285 $4.00 Motobecane crank
18.9 x 23.9 x 0.2  0.0.0.000 01286 $4.00 Motobecane crank
18.9 x 23.9 x 0.3  0.0.0.000 01287 $4.00 Motobecane crank
18.9 x 23.9 x 0.5  0.0.0.000 01288 $4.00 Motobecane crank

19.2 x 25.8 x 0.10  0.0. old209073 $7.00 Tomos A3 2-speed clutch
19.2 x 25.8 x 0.20  0.0. old209119 $7.00 Tomos A3 2-speed clutch
19.2 x 26.0 x 0.30  0.0.0.0 209073 $5.00 Tomos A35 2-speed clutch
19.2 x 26.0 x 0.50  0.0.0.0 209119 $4.00 Tomos A35 2-speed clutch

20.0 x 29.0 x 0.5  0.00.0.00 69280 $5.00 Leleu front wheel hub dust ring
20.3 x 33.0 x 1.2  0.00.0.0 131513 $2.50 Vespa rear hub, var and non-var
20.3 x 24.0 x 0.5  0.00.0.0 227393 $2.50 Tomos A35 oil pump

21.0 x 27.0 x 0.10  0.0.00.0.25892 $8.00 Puch ZA50 2-speed crank, right
21.0 x 27.0 x 0.20  0.0.00.25892.2 $7.00 Puch ZA50 2-speed crank, right

22.0 x 29.0 x 0.5  0.00.0.00 69680 $8.00 Leleu rear wheel hub dust ring

23.3 x 34.0 x 0.5  0.00.0.0 131512 $2.00 Vespa rear hub, var and non-var

25.3 x 34.0 x 0.2     0246.008.003 $7.00 Sachs 505 left crank for centering

27.0 x 39.9 x 0.30  0.0.0.0. 37742 $8.00 Peugeot 102-103 case, right
28.0 x 46.9 x 0.40  0.0.0.0. 37034 $7.00 Peugeot 102-103 case, left
28.0 x 56.0 x 1.00  0.0.0.0. 25-4028 $0.00 Morini MO2 clutch

30.0 x 36.7 x 1.5     0244.153.000 $4.00 Sachs 505 right crank for centering

 

---

S P E C I A L   S H A P E S

thrust washer 1.5  0.0.0.45795 $$5 Peugeot 102-103 clutch, variator & 1-spd
thrust washer 1.8  0.0.0.47610 $$7 Peugeot 102-103 clutch, variator & 1-spd

folding washer   0.0.0.209074 $$6 Tomos A3 clutch

 

 

---

5.  C I R C L I P S

Circlips are circular clips. Officially they are known as retaining rings. The “size” is not the actual size, but rather the size of the shaft or hole that it is for. For external rings, the shaft size “For OD” is more than the groove OD, which is more than the actual ring ID. For internal rings, the hole size “For ID” is less than the groove ID, which is less than the actual ring OD.

There is a “click” sound when the spring-loaded clip-ring snaps into the clip-ring groove. The ring should be free to rotate, but with some friction from the spring tension. If the ring is too big it will rotate with no friction. If the ring is too small it will have to be over-stretched to get on, and will rotate with much friction. That’s how to tell if a clip-ring fits properly, by feeling, hearing and seeing.

---

External Retaining Rings “circlips” or “snap rings”

8 x 0.8 $0.00 Puch #900.4608 3-shoe clutch

10 x 1.0  $1.50 Puch #900.4610, 1-speed clutch
10 x 1.0  $$.$$ Derbi #00.471.10, seat hinge pin
10 x 1.0  $$.$$ Benelli #90.20.10.10, clutch shoes

11 x 1.0  $2.00 Benelli #90.20.10.11, start clutch shaft

12 x 1.0  $2.00 Batavus #841505, M56 right crank shaft end
12 x 1.0  $$.$$ Morini #10-5006 MO2

13 x 1.0  $2.00 Sachs #0245.121.000, 504, 505 main shaft

14 x 1.0  $2.00 Minarelli #6000, V1 after Sep 79 with cone clutch
14 x 1.0  $$.$$ Puch 900.4766 1-speed start shaft

15 x 1.0  $1.50 Puch #900.4619, 1-speed clutch outer  
15 x 1.0  $$.$$ Minarelli #4860, V1 right drive shaft
15 x 1.0  $$.$$ Derbi #00.471.15, 75-86 Variant drive shaft
15 x 1.0  $$.$$ Benelli #90.27.10.15, 75-80 Benelli G2

16 x 1.0 $1.50 Puch #900.4616, drive sprocket
15 x 1.0  $$.$$ Minarelli #5800, V1 pedal shaft
16 x 1.0  $$.$$ Motobecane #14158, pedal shaft outer, before pulley
16 x 1.0  $$.$$ Tomos #032073, pedal shaft
16 x 1.0  $$.$$ Morini #10-0005, MO1

16 x 1.5   N/A   Sachs #0245.020.001, 505 pedal shaft

17 x 1.0 $2.00 Puch #900.4617, 1-spd and 2-spd clutch inner

20 x 1.0  $2.00 Tomos #032077, 2-speed counter shaft

22 x 1.0  $2.50  Morini #10-5009 MO2
22 x 1.0  $$.$$ Motobecane #14563 clutch-pulley, var and non var

26 x 1.2  $2.50 Vespa #006426, front clutch non-variator outer side
26 x 1.2  $0.00 Tomos 032082 clutch inner

 

---

Inverted External Retaining Rings

13 x 1.0  $2 Sachs 0245.121.000 504, 505 driveshaft

15 x 1.0  $2.50 Motobecane #14561, left crankshaft var. and non-var.

16 x 1.0  $2.50 Motobecane #16566, pedal shaft inner, after pulley

 

 

---

Side-Mount External Retaining Rings “E-clips”

1.4-2 x 0.3  $1 for 1.2 groove, this is Myrons smallest item!

2-2.5 x 0.4  $2 for 1.5 groove, Dellorto PHVA needle, 2.0 mm

2.5-3 x 0.5  $1 for 1.9 groove,

3 – 4 x 0.6  $1 for 2.3 groove,

4 – 5 x 0.6  $1 for 3.2 groove, Bosch M19A points pivot post

5 – 7 x 0.7  $1 for 4.0 groove,

6 – 8 x 0.7  $1 for 5.0 groove,

7 – 9 x 0.7  $2 for 6.0 groove, Puch #900.4606, 1-spd starter shaft
7 – 9 x 0.7  $2 for 6.0 groove, Derbi #00.473.08, clutch shoes

While the other clips are named by the shaft size, these E-clips are often named by the groove size. Since they install from the side they don’t have to spread over the shaft. So the shaft size does not matter. Puch calls the “7-9 x 0.7” e-clip “BZ-circlip 6”. The groove is 6.0mm but the shaft is 7.6mm.

 

---

Low-Clearance Side-Mount External Retaining Rings “C-clips”

14 x 1.0  $2 Puch #900.4766, 1-speed starter shaft

 

 

 

 

 

---

Internal Retaining Rings “inner circlips”

12 x 1.0  $2.00 Peugeot #22309, piston clip

15 x 1.0

22 x 1.0  $2.50 Motobecane #14563 clutch

25 x 1.2  $2.50 Vespa #000674, front clutch non-variator inner side

32 x 1.2  $5.00 Derbi #00.472.32, clutch hub-drum

35 x 1.2  none   Benelli #90.27.20.35, left crankshaft

40 x 1.7  $5.00 Puch #900.4740, 2-speed drive shaft
40 x 1.7  $5.00 Garelli #000315.1.193, vert. 2-sp left crankshaft

42 x 1.7  $5.00 Batavus #841512, Laura M48 left crankshaft
42 x 1.7  $0.00 Garelli #274.030.00, vert. 2-sp right drive shaft
42 x 1.7  $0.00 Benelli #90.27.20.42,  drive shaft

49 x 1.2  $5.00 Garelli #275.955.00, horizontal 1-speed clutch
49 x 1.2  $5.00 the installed outer diameter is 49, the free OD is 50

 

 

---

Inverted Internal Retaining Rings

22 x 1.0  $2.00 Motobecane #14563, var. and non-var. clutch-pulley

24 x 1.2  $3.00 Vespa #16702, rear var. clutch-pulley 

40 x ?.?   $5.00 Puch #901.4656, 1-speed drive shaft

 

 

---

External C Rings

05 x 0.80   $1.50 Puch #900.4635  1-speed start clutch center pin (4.4 x 0.8 x 6.0mm)

 

 

 

 

 

 

---

6.  V A R I A T O R  P A R T S

Table of Variator Rollers

 

 

 

 

Now, do you feel like an engine nut?