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Chain and sprocket changes Chain and sprocket changes
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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.
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  #1  
Old 22 Nov 2012
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Chain and sprocket changes
Im wanting to increase the acceleration on my ttr e 600 and its a happy coincedence that my chains dead..so what sizes do i need to increase the acceleration?..any make better than any other?..
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Old 22 Nov 2012
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I have change to 14:40 from 15:38. Makes a hughes difference, and its now really fun to drive. And i can still drive 120 kmt with out problems.
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Old 22 Nov 2012
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Does the chain length alter when you change the sprocket sizes?
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Old 22 Nov 2012
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It dipends. I my case it did change a lot. But you can buy chain kit where it fits with the ratio you choose.
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Old 23 Nov 2012
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After searching it would appear that a chain and sprocket kit is only available in either standard form.15/47 or14/47 as an alternative.

Anyone know if any of the xt's etc chainset is the same and transferable?..
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  #6  
Old 23 Nov 2012
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Buy both sprockets and chain separately.
Both rear and front sprockets come in variety of tooth numbers, and you can lengthen/shorten the chain to your needs by adding (if necessary) a bit of chain, securing it with two master links. Shortening is easier, requires only one master link.
But I don't think you will need to change the length of the chain if you won't go to extremities.

Cheers!
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Old 23 Nov 2012
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Quote:
Originally Posted by Zergman View Post
Buy both sprockets and chain separately.
Both rear and front sprockets come in variety of tooth numbers, and you can lengthen/shorten the chain to your needs by adding (if necessary) a bit of chain, securing it with two master links. Shortening is easier, requires only one master link.
But I don't think you will need to change the length of the chain if you won't go to extremities.

Cheers!
unfortuatly im being told by various suppliers that NO alternative rear sprocket is available for the ttr...
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Old 23 Nov 2012
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Chain /Sprocket
Hi Nik ,
Is your TTR the Cush Drive one - if so I think the Sprocket may fit from an XT , double check with Supersprox , if not WR's sprocket fit I think ditto check with Supersprox , by the way did you sort out your carburation ? All The Best Glenn
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Old 23 Nov 2012
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rear sprockets
hi have a look at this site ,http://www.jtsprockets.com/ ,available in the uk ,they make great sprockets hope this helps steve
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Old 24 Nov 2012
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Go to gearingcommander.com i know the xt is on there. You can put in different front/rear sproket sizes and it'll show how it changes acceleration, top end, bottom end, torque ect ect also will show how many links to add/remove for what ever you decide to go with.

I found it usefull.
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Old 24 Nov 2012
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Quote:
Originally Posted by panterg View Post
Hi Nik ,
Is your TTR the Cush Drive one - if so I think the Sprocket may fit from an XT , double check with Supersprox , if not WR's sprocket fit I think ditto check with Supersprox , by the way did you sort out your carburation ? All The Best Glenn
Hi Glen..I have just finished putting it back together after a lot a faffing about.I have been putting a ttr 250 back together so I can hopefully sell it.

Its not been out yet but I did change the idle jet,up one size,after advice recieved on here.

I have to set the idle speed air/mixture screw next week and will follow advice from here on how to do it.

I stripped the carb and used a can of good quality carb cleaner on all the jets and air passages including the choke mechanism.I also used a compressor to blow through all the airways. Starts sooo much easier now.

Appreciate ALL the advice given. Saturday morning reasearch time.

BTW I thought all ttr 600's were cush drive?..Dont wana strip the back end out to find out tbh...
Last edited by nikroc; 24 Nov 2012 at 06:44. Reason: typo
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Old 24 Nov 2012
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Quote:
Originally Posted by nikroc View Post
...
BTW I thought all ttr 600's were cush drive?..Dont wana strip the back end out to find out tbh...
The TTR600 did not have a cush drive.
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Old 24 Nov 2012
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The genuine yam service manual identifies that the ttre does have a cush drive...refers to it as a 'damper'
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Old 24 Nov 2012
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Quote:
Originally Posted by nikroc View Post
The genuine yam service manual identifies that the ttre does have a cush drive...refers to it as a 'damper'
Yes, the TT600RE has one. But the TTR600 does not. The TTR600 was more of a dirtbike, and did not weigh as much. It did not have the e-start or the cush drive.

edit:
I see you wrote "ttr e 600 " in your first post, if you have e-start you have the TT600RE. It has a cush drive. Please note that you need the front sprocket from a suitable year XT600 and not the ttr600, the sprockt from the ttr600 is to thin. If you order from wemoto you probably will get the wrong part. I did.
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Old 24 Nov 2012
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Originally Posted by nikroc View Post
unfortuatly im being told by various suppliers that NO alternative rear sprocket is available for the ttr...

If you have a 6-bolt pattern on the rear sprocket you have the TTR600. If you have a 4-bolt pattern on the rear sprocket you have the TT600RE. From memory (please check before ordering) it is the same as the XT600 has. You should be able to get lots of different sprocket sizes if you have the TT600RE.


I had a TT600RE and changed from 15t to 14t up front. The rear was stock, 47t if I remember correctly. I was happy with the change, the bike was a lot more responsive and would cruise happily at 90-100 km on the blacktop. For higher speed (like 120 km/h) I would have kept the stock gearing.
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