Re: clutch housing and pressure plate

[Allen Poole <allen@xxxxxxxxxxxx>]

On Feb 14, 2006, at 12:28 PM, Tpcutter@xxxxxxx wrote:

> My  question is simple and to the point: How many BMW clutches have  
> you
> installed?

5 or 6, on my and friends' R75, 80, 90, 100... airheads, mostly of  
the older style but 1 of the style used on newer R100s and also  
oilheads.

> How many started slipping shortly after you installed a new friction
> plate with  all the other old parts?

None.

> The resulting combination
> gives not enough to contain the torque of any R1100
> or 1150 engine.

Fine point. The difference between airhead/oilhead engine output  
could account for our differing experiences.

Do you suppose riding style matters too? For example, the bikes I've  
worked on are used day-to-day in town. I imagine that frequent  
shifting and start/stop helps a friction disk mate to worn pressure  
plate/ring, and that limited use of full-throttle engine output makes  
slippage during initial break-in less likely.

Note that I'm not arguing that someone _ought to_ reuse old parts,  
even on an airhead.

I stand by my empirical observation that doing so can provide  
perfectly acceptable results, with the added qualification that my  
results were with airhead motors.

Cheers,
Allen

____________________________
L. Allen Poole
home:	(503) 230-2933
mobile:	(503) 720-3742
e-mail:	allen@xxxxxxxxxxxx

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