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gcc
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greece
Joined: 04/21/2014
Posts: 6

Hello ,

I want to adjust my wheels for my motorcycles R50 & R60 with sidecar.

The R50 has a newone set of akront-morad rims and i don't know , the offset of the wheels are correct.

i know the offset tool for the aluminium rims (2,15'' width) is the Matra 5050.5
and for steal-chrome rims for sidecar (2,75'' width) is the Matra 5050.3

i have attach a picture which explains the and have the differences betwwen these tools.

My question is how much is the width of the Weinmann rims lip - to lip

and how much is the width of the schürmann chrome rims end -to end

These dimensions are so important for me and for other people who has aftermarket rims at R50 - R69S.

If whe knew the widths of the original rims we can calculate the difference between original and aftermarket and finally we have a correctly wheels at ours Lovely motorcycles..

  • matra.jpg
gcc
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greece
Joined: 04/21/2014
Posts: 6
If whe knew the width of the

If whe knew the width of the original rim (yellow arrow of the attached picture)

Whe can compare the width of the original rim and the aftermarket rim ,

if its the same its ok,
if the after market is bigger or smaller we can calculate the difference

we 'll use the matra tool 5050 .3 or 5050 .5 we can have a correct offset...

for example , if the width of the standard is 3''
and the aftermarket rim is 3,1''
difference is 0,1'' = 2,54mm.
2,54mm / 2 = 1,27mm

from matra the correct distance for the offset is 6,5mm±0,1 for original rim

for the aftermarket 3,1'' outside width for the correct offset we measure (6,5mm-1,27mm)±0,1 = 5,23mm±0,1

So the only we need for a correct offset is the original width ! !

Help us Big Grin

  • wheel29.jpg.jpg
Twocams
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VBMWMO #8750
Joined: 03/16/2014
Posts: 698
The steel rims I just took

The steel rims I just took off my 69 R69S last summer are 2 7/8" from outside to outside lip.

twocams

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Twocams
69 R69S 03 K1200GT
92 R100RT

gcc
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greece
Joined: 04/21/2014
Posts: 6
:)

Thank you , twocams!

I think and the weinmann has the same width..

Because the Matra tool is the same..

But and another answer for a bike with Weinmann , it will be perfect !!

gcc
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greece
Joined: 04/21/2014
Posts: 6
Nobody with Weinmann

Nobody with Weinmann aluminium rims , can help me ?

It's only a measuring and one post Smile

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