Just wondered if anyone has tried one of these and what they thought....

In principle the idea seems great but none of the major manufacturers have gone this way.

Cheers

I have not tried one but a few things spring to mind. As the load is concentrated on fewer teeth wear rates could be higher. On a trials bike the teeth not only transmit power the keep the chain in line when it hits rocks etc, fewer teeth probably mean more chain offs.

Also the present system works pretty well - why change it. Trials bikes have more power than they need, a bit lost due to friction does not matter. If these sprockets really give less friction (meaning more performance and or less fuel used) why is motoGP where any marginal gain important, not using them.

Edited December 11, 20169 yr by dadof2

Looks like snake oil* to me. Chain drive is one of the most efficient drive methods in use because the only significant friction loss is when the chain enters or leaves the sprocket and slides over the tooth and bends to the angle of the sprocket and the reverse on leaving the sprocket. You lose a lot more efficiency using an o-ring chain.

* I have a good understanding of Snake Oil. After all, I was born in the same city as Lydia Pinkham.

Look it up kids.

Good points I think I will stick to a full set of teeth ?

They work just fine,had one on my 4rt for over 12mnths,wear rate is a match if not better than conventional, never had the chain come off yet!! but didn't with ordinary either mind. They are signifigantly quieter running , and look trick as too. If you want one you wont be disappointed.

there was s previous thread on this topic if you have a search.

ta

 

I have had 2 and can honestly say I never had the chain off.

Wal mart still sells Lydia Pinkham's stuff ... So it got to be some great marketing , Right ? only been around 100 years or so .... Someone is making $$$ On the same things a proper diet will do ...