Hi

Having fitted an 18" rim and put a 14tooth front sprocket on my XT600E, I still want lower gearing (the bike spends most of it's time trailriding) - I can only source a 47 tooth rear sprocket but ideally require something in the 48->50 range...

Can anybody point me in the direction of a supplier.

Thanks
Bish

Try B&C Express on 01522-791369 or www.bandcexpress.co.uk.

There are also other suppliers in the Bikemart section of MCN.

Steve

Thanks Steve, but I've drawn a blank so far.

Renthal don't list anything other than standard for the back. Evidently if I went for an alloy, rather than steel, one, it wouldn't be a problem - other than the fact it would wear out in seconds!

If anyone else actually runs a large rear (steel) sprocket, perhaps they could advise where it was sourced from.

Aluminium sprockets do not "wear out in seconds" if lubed & the chain tensioned correctly. Admittedly, they do not last as long as a steel item & cost more but it's either that or permanently having the wrong gearing.

I used to run one on my old GSX-R as I'd fitted an OW01 rear wheel. It gave good service for 5,000 miles. I only replaced it when I fitted a new chain.

Steve

Why not try the standard 47t rear sprocket with a 13t front? This would give a ratio of 3.615:1. A new 13t front (from B&C or similar) should also cost less than the aluminium rear?

14/47 = 3.357:1
14/48 = 3.429:1
14/50 = 3.57:1

I would never try a front sprocket with less than 13t on it (unless it was a very small pitch chain?) as it's possible that this leads to too tight a radius for the chain to turn effectively?

Steve

Hi Bish,

The Renthal site shows the range available:
http://www.renthal.com/site/products/cwmakes/yamaha.asp
I would give them a call direct, or another of their distributors (see site). Failing that, I would go through M&P in Swansea.

The Renthal site also has a Technical section with the gearing ratios.

Good luck, Geoff

[This message has been edited by GeoffE (edited 26 December 2003).]

Steve & Geoff

Thanks for your replies - I will try B&C direct, as the renthal.com site does show more choices than I'd been advised...

Cheers
Bish

try the chaingang out of perth australia..
these guys make real spockets that last forever.. they can make custom order sprocket sizes.... just a thought if your really desperate....phil.