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Old 07-01-2010, 01:57 PM   #1
Airhead Wrangler OP
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Airhead mono final drives

Couple of questions for those who've been there / done that. I'm doing some long term planning for a revamp on my bike and was considering a slightly higher final drive ratio in order to save a bit of gas and maybe get a little more speed. I was wondering if the later Monolever final drives have the same spline as the earlier G/S and ST final drives. Also, will a later GS 4 lug wheel mount up to the monolever 4 lug final drives? I'm betting StephenB can shed some light here.
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Old 07-01-2010, 03:18 PM   #2
Caddy82rats
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For example a 1989 monolever rear from a RT will fit.
Four lug has the same patern but wheel ofset is totally not the same
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Old 07-01-2010, 03:24 PM   #3
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Quote:
Originally Posted by Caddy82rats
Four lug has the same patern but wheel ofset is totally not the same
The offset of the rim in relation to the hub or the offset within the hub itself?
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Current rides: HPN #834, '93 R100GSPD "red rocket", '73 R75/5 Toaster mongrel, '80 Ducati Pantah 500SL, '92 DR350, '67 Honda SS50, '80 Honda Chaly.
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Old 07-01-2010, 03:33 PM   #4
StephenB
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Sure can do!

G/S and ST have 3-lug final drives, both with the known 37:11 ratio. Acc to the ETC there are further crowngear sets available in 32:9 (R65 I believe) and 32:11 (Swiss model, Joerg should be able to confirm).

4-lug final drives can be had in 33:11, 32:10 and 37:11 (33:11 is the nicest on a 1000cc engine for street, IMHO).

Input FD splines are all the same.

All 4-lug monolever FDs work with the 4-lug GS hub (see link below) and whatever you lace to it, obviously ;-)

Two relevant links:

Paralever -> Monolever conversion: http://www.stephenbottcher.net/BMW/paraconv.htm

Spoked wheels on a monolever:
http://www.stephenbottcher.net/BMW/rearconv.htm
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StephenB screwed with this post 07-01-2010 at 05:32 PM
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Old 07-01-2010, 03:38 PM   #5
Caddy82rats
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Stephen had put all the information here

http://www.advrider.com/forums/showt...paralever+mono

Edit : Oops too late Stepfen had been faster than me
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