Batavus Speed Versions

A. Laura M48 Speed Versions (worldwide 1972)

M48-01   40 kph
M48-02   50 kph
M48-03   30 kph CH
M48-04   30 kph DK
M48-04   30 kph S
M48-05   25 kph
M48-08   45 kph

The parts differences are shown in Laura Engines.

 


Batavus Speed Version Sticker

Speed sticker
is below seat.
20, 25, or 30

B. Batavus M48 Speed Versions (US models 1976-80)

20 mph    20 mph    25 mph    30 mph   ##  parts that are different
M48-03   M48-13B  M48-01   M48-02
M48-03   M48-13B  M48-11B
———————————————————————————
485194    485194    485180    485180   #64  crankcase (solid mount, silent, silent)
480695    480695    480695    485695   #65  head   (low comp, low comp, normal)
485697    485697    485690    485690   #66  cylinder   (restricted, normal, normal)
480894    480894    480880    480880   #71  clutch housing (small pulley, norm, norm)
486795    486795    481790    487190   #72  carburetor   (8 mm, 8 mm, 12 mm)
481734    481734    481734    481713   #72  carb air cover cap (14 mm, 14 mm, 16 mm) 

481794    481794    481785    481785   #73  intake pipe   (small, normal, normal)
480893    480893    480891    480891   #75  drive v-belt (thin long, normal, normal)
481091    481091    481093    481093   #76  front sprocket (11 tooth, 13 tooth, 13)
481506    481506    481505    481505   #77  sprocket nut (small OD, normal, normal)
10-388     10-388     10-342    10-342     #4  engine mount assy  (long solid, silent, silent)
16-008     16-098     16-091    16-098     #1  exhaust header (20×585, 22×550, 28×500)
16-090     16-097     16-105    16-097   #20  silencer assy (20 mm, 22 mm, 28 mm)

44-379     44-379     44-404    44-379     #7  rear sprocket (48 tooth, 50 tooth, 48)
45-174     45-174     45-094    45-094     #8  motor chain (88 link, 90 link, 90 link)

Laura M48 engine versions

Laura M48 versions, left 20mph, right 25 and 30.
The “silent” mount (25 & 30) has rubber cushions.

Conclusions:

To upgrade a 25 mph to 30, you have to change the carburetor assembly, head, sprocket and exhaust. 

To upgrade a 20 mph, you have to change the “whole” engine, carburetor, exhaust and sprockets.

The M48-03 (20 mph) version parts are made to not interchange, so you can’t upgrade easily. The clutch hub with smaller front pulley is painted golden yellow and uses a thinner and longer belt, so you can’t put a 30mph clutch hub, painted brick red (the belt would slip because the sides don’t touch). 

From a distance you can tell a 30mph version by the extra think 28mm exhaust header.

From a distance you can tell a 20mph version by the yellow clutch and thin long belt.

 

 


C. Batavus M56 Speed Versions (US models 1978-80)

20 mph    25 mph    30 mph   ##  parts that are different
M56-03   M56-01    M56-02
———————————————————————————
540681    540681    540695   #6  head
560688    540680    540685   #7  cylinder
561787    561782    561782  116  carburetor (8 mm, 12 mm, 12 mm)
560194    580180    580180  189  crankcase
561096    561097    561097  #38  front sprocket (13 tooth, 17 tooth, 17)
45.065    45.065     45.118   #15  drive chain (96 links, 96 links, 98 links)

16.141    16.141     16.151    #1  ex. silencer assy (478401, 478401, 478550)
16.130    16.130     16.152   #14  ex. header pipe (22 mm, 22 mm, 28 mm)