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Post By bacardi23
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14 Aug 2010
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xt 600 sprockets and chain help needed
Hello all,
I have a 1984 xt 600, I would like to replace the chain and sprockets.
Is their a guide or chart to know for example which one would be best in
low end/mid end/top end torque etc?
My 84 xt 600 now has "40" wrote on the back sprocket.
My son has 86 xt 600 he has "42" wrote on the back sprocket.
My 84, is good in low end, first gear wheelies now, can not pull it up in 2nd gear.
My sons 86 xt 600 is good in like mid end he can do wheelies in 1st and 2nd gear and his bike will beat mine in top end also.
I am not looking for top end speed, but would like to have enough torque to do 1st and 2nd gear wheelies.
any suggestions please?
thanks
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14 Aug 2010
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Join Date: Jun 2010
Location: New Port Richey FL
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count the number of teeth on your rear sprocket, and order one with around 3-5 teeth additional, as that will improve your torque delivery.
in the sportbike world we do this regularly. my bike can wheelie in 2nd fairly well, first is EASY if I get careless, and I'm 99%sure I've got stock gearing on mine too.
I'll admit though, these bikes arent really exceptionally fast though, I mean its like 90mph tops if I remember right.
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14 Aug 2010
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reply
bobthebiker thanks for your reply,
what is the number "40" & "42" wrote on the back sprockets of my bike and my sons?
thanks
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14 Aug 2010
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Join Date: Dec 2008
Location: Denmark
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Its the number of teeth on the sprocket.
Its like bicycles. The more teeth in the back the faster the bike should rev (torque delivery)
try messing around at Gearing Commander: Motorcycle Gear Ratio Calculator for Sprockets RPM Speed Chain You can thange a fictional gearing, and see what it does to you're revs and speed.
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26 Sep 2010
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Good call Jens thanks for that link
I have a 1999 XT600 and I find the stock 15/45 (3.00 to 1) gearing is on the high side, I'm riding the bike strictly in the dirt and have changed to 14/47 (3.36 to 1) which is the highest ratio I would consider for the dirt, the 14/47 setup provides a huge improvement over stock but could be a little lower still, when it's time for replacement I'll be switching to 13/45 (3.46 to 1)
A few examples of other dirtbike gear ratios.
Stock 1983 Honda XR500R 14/48 (3.43 to 1 )
Stock 1984 Suzuki RM250E 14/50 (3.57 to 1)
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26 Sep 2010
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Location: XXX<-Portugal->Azores->Santa Maria (island)
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Don't go lower than 14! You should only increase the rear sprocket!
If you want to go to that kind of ratio.. you should go to either 14/49 or 14/48
Don't go on the cheap side because you will have alot more troubles with other parts of your bike!
firstly you will completely waste the swingarm protector/slider in very few hundred kilometers, than comes the swingarm and by the time you figure it out you'll need a swingarm protector, chain rollers etc etc etc..
But anyway, do as you wish and...Good luck!
Vando
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