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Old 01-20-2012, 03:38 PM   #3091
Jabba600
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Damage to sprocket is the same as the shaft
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Old 01-20-2012, 04:35 PM   #3092
2manyrides
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sproket/spline

That spine is nearly completely toasted. And that really sucks!
Does not look like an OEM sproket...Right? (4 hole VS 2)

Does give credence to the theroy that aftermarket sprokets are too hard of steel?
I hope this never happens to one of mine.

I have always wondered about the way an XR sproket is held on, yet can move while in place. A sproket that bolts up tight would not do this, but wear would have to take place somewhere in the final drive.
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Old 01-20-2012, 04:47 PM   #3093
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Quote:
Originally Posted by 22manyrides View Post
...
Does give credence to the theroy that aftermarket sprokets are too hard of steel?
...
What makes you say that?

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Old 01-20-2012, 05:06 PM   #3094
Jabba600
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Quote:
Originally Posted by 22manyrides View Post
That spine is nearly completely toasted. And that really sucks!
Does not look like an OEM sproket...Right? (4 hole VS 2)

Does give credence to the theroy that aftermarket sprokets are too hard of steel?
I hope this never happens to one of mine.

I have always wondered about the way an XR sproket is held on, yet can move while in place. A sproket that bolts up tight would not do this, but wear would have to take place somewhere in the final drive.
It's a JT 15 tooth ,
Oh well looks like I've got some thinking to do..!?
Swap out engines or sell it....
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Old 01-20-2012, 05:50 PM   #3095
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1st ride

OK, the digital age was fairly new, hell I'm still mired in analog thoughts and ways...
But I've got lots of old footage from before the days of go pro type devices. That said, the xr600r thread is a great place to share my 600 experiances. I just hope you guys can get past the poor qualty behind these captured shots.

SDA ride 3991 was the first chance to take out my new bike as it had been raining for weeks on end. We found the trails were closed! What a slap in the face. Not to be denied we went up higher and took dirt roads, laid out a route to go around in a newly planted clearcut, and stumbled apon a trail too. Some of it wasn't my favorite for break in purposes, but in the end I think all has gone well as 20 years later the motor still runs good without ever being disassembled. You'll see Scratch Beetle on his 88 xr...
Mr Freeze on my old XR. (give him a break he's not much of a rider and was jumping up fromm TT500 ownership).
This is a 17 minute + vid...be patient, there's lots of scratching out!

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Old 01-20-2012, 05:55 PM   #3096
beechum1
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Originally Posted by Jabba600 View Post
Do you think a XR650R sprocket will help this ??
Nope. needs to be changed, or weld a sprocket to the shaft and get a few more miles while you get the counter shaft and gaskets to do the rebuild. Or sell th emotor and get a replacement.

How much?
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Old 01-20-2012, 06:41 PM   #3097
MortimerSickle
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Originally Posted by beechum1 View Post
Nope. needs to be changed, or weld a sprocket to the shaft and get a few more miles while you get the counter shaft and gaskets to do the rebuild....
+1, its working for me.
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Old 01-20-2012, 07:12 PM   #3098
Olas
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I have a motion pro throttle and clutch cable for sale in the flea market...If anyone is interested in a discount on some new cables check it out here:

http://www.advrider.com/forums/showthread.php?t=757940
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Old 01-20-2012, 08:37 PM   #3099
ID XR600
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Originally Posted by Jabba600 View Post
Do you think a XR650R sprocket will help this ??
I sure don't know,,, glad mine is being shipped to me right now as we speak. Just taking the advise of others here so that doesn't happen to my xrl. Good luck extra motors is a good thing.
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Old 01-20-2012, 08:47 PM   #3100
mcma111
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Do you think a XR650R sprocket will help this ??

Nope. To late.

Time for a new shaft. That damage is from using aftermarket sprockets.
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Old 01-20-2012, 11:59 PM   #3101
sh0rtlife
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this is one of those cases where i think an aluminum or "soft" steel sprocket would be better...better to wear it out than the shaft
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Old 01-21-2012, 02:08 AM   #3102
Jabba600
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Well guys quick update
I got in the shed today (50deg/cel)and decided to rip the damaged shaft engine out...
And put the rebuilt one that I have spare that has a real good shaft in
After about half an hour of kicking nothing zip no go...mmm valves im thinking out comes the feeler guages yep tight as ,
First kick boom away she goes runs like a dream way more grunt no vibration and good for another 40k
Xr650r sprocket on order so this may not happen again for a long time I hope !!
Bloody stoked!!!
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Old 01-21-2012, 04:28 AM   #3103
mcma111
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Quote:
Originally Posted by Jabba600 View Post


And put the rebuilt one that I have spare that has a real good shaft in

Bloody stoked!!!

Kinda like having clean undies in the drawer. A spare XR600 engine ready to go...
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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Old 01-21-2012, 05:19 AM   #3104
Jabba600
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Quote:
Originally Posted by mcma111 View Post
Kinda like having clean undies in the drawer. A spare XR600 engine ready to go...
Yep, I basically hav a whole spare bike minus 1frame as one was rusted real bad
A good predicament to have I know just not much fun working in such hot conditions !!
Now I hav to rebuild this engine this one can get a bigger bore cam ect :-)
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Old 01-21-2012, 03:49 PM   #3105
elsalvadorklr
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about sprockets

hey dudes

I had a jt sprocket on my 88 when I bought it and the splines(thick 6 spline years) were about 1/8th wore down...

then steve sent me a new shaft(again old style) and I bought an OEM sprocket for my 88...expensive and took a while but worth it!

Now I dont know if this is true for all year xr600's but my new oem was about 3-4mm thicker at the sprocket base compared to JT, it was also lightened with holes all around the sprocket and felt substanially sturdier... I beleive AFAM made these sprockets for honda for these years.

thing is, its probably softer material, or not hardened.

I dont have enough miles to give input on longevity..but thought id share, use OEM

Also to notice is that when NEW...this sprocket had NO PLAY on the shaft...

now it has worn in Im assuming and has the slack know to all us xr users. I also run a real slack chain.

just my 2cents...
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