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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Photo by George Guille, It's going to be a long 300km... Bolivian Amazon

I haven't been everywhere...
but it's on my list!


Photo by George Guille
It's going to be a long 300km...
Bolivian Amazon



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  #1  
Old 22 Dec 2003
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XT600E - Larger Rear Sprocket

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
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  #2  
Old 22 Dec 2003
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Try B&C Express on 01522-791369 or www.bandcexpress.co.uk.

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

Steve
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  #3  
Old 24 Dec 2003
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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.
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  #4  
Old 24 Dec 2003
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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.

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  #5  
Old 24 Dec 2003
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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?

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Old 26 Dec 2003
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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).]
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  #7  
Old 5 Jan 2004
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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
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  #8  
Old 5 Jan 2004
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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.
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