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Pre 70 gearing ratios
- schrader7032
- Posts: 9057
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
- Has thanked: 3 times
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Pre 70 gearing ratios
http://bmwmotorcycletech.info/ringgears.htm
A 32/11 was used on some post '70 bikes.
Another area to check is the VMCA website at:
http://bmwvmca.org/joomla/
Go to the newsletters and look at Vol 2 Number 3. Go to the article titled "Wedgrehzahl". That's a German word associated with speedometer ratios. That article shows the 32/11 ratio might have been used on the R60 solo version.
A 32/11 ratio is 2.91...that's pretty tall and would be used in a solo bike and provides more top end speed. A sidecar drive, like the 26/6 is 4.33 which is a much shorter gear...it gives good torque at low speeds but might limit top end speed.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
Pre 70 gearing ratios
- schrader7032
- Posts: 9057
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
- Has thanked: 3 times
- Been thanked: 36 times
Pre 70 gearing ratios
A caption on a photo says that the seepage was excessive in hot weather. I suspect also under hard usage.
The information was probably taken from the following service bulletin:
http://www.beemergarage.com/documents/200.pdf
I would think it's not "essential", especially if you're just using the bike in a normal fashion and not pushing it on hot days and pulling a lot of load.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.