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RE: Belt Drives

I think they have these efficiencies transposed.  Little as I like chain
drives they are the most efficient form of power transmission and I believe
the chain drive is in fact 98.5%.   Of course we are talking brand new chain
and sprockets, well lubricated, to achieve this...

With the belt drive you have to have some tension to "hold it on" and this,
together with a slight hysteresis loss IMO would reduce the belt a bit but
agreed, it should stay constant for longer.

Clive Liddell
Pietermaritzburg, South Africa
'96 R850R ~79k.km
'01 R1100RT ~60k.km
> Here's a claim from an outfit that does conversions.  I know, I know,
> where's the DATA?
> "Typical chain efficiency is approx. 80% when new, and deteriorates
> throughout it's life. Typical belt efficiency is approx. 98% throughout
> its entire lifespan. Due to change of pulley ratios, the engine RPMs are
> reduced by 28% @ 60 mph. Feels like you have a 6th gear!"
> Their website: