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Thread: KTM 450 EXCR 5" rear wheel clearance question

Started 1 month, 1 week ago by tripleespresso
OK, mounted a 5" rear wheel laced to talon hub on my 2008 450 EXCR with a 160/60 Conti SM tire. No way will it clear the chain. I have do run 5mm difference on the chain blocks to get enough clearance so that the rear wheel will roll. To the point where the sprocket touches the chain guide. I have read others have installed this wheel so what gives? I sent the wheel back to Motostrano an...
Site: Supermoto Junkie  Supermoto Junkie - site profile
Forum: Tech/Setups  Tech/Setups - forum profile
Total authors: 12 authors
Total thread posts: 37 posts
Thread activity: no new posts during last week
Domain info for: supermotojunkie.com

Other posts in this thread:

kirkz replied 1 month, 1 week ago
the offset was incorrect. it should be 19-21mm offset off sprocket mounting flange to give chain clearance. Also you should run a 150 series tire because it is designed to go on a 4.5 to 5.0 inch rim. Motostrano does not build wheels so they dont know offsets. Those wheels came from Qtm inc. kirk Quote: Originally Posted by tripleespresso...

GuzziMoto replied 1 month, 1 week ago
Quote: Originally Posted by kirkz the offset was incorrect. it should be 19-21mm offset off sprocket mounting flange to give chain clearance. Also you should run a 150 series tire because it is designed to go on a 4.5 to 5.0 inch rim. Motostrano does not build wheels so they dont know offsets. Those wheels came from Qtm inc. ...

brian replied 1 month, 1 week ago
I'm by no means an expert such as the previous posters....but I run a 5"/160 or 165 combo on my 550 Berg,450 SMR and 250SX-F, in fact I know a couple guys who run 5.5" wheels on their 250's with stock swing arms... I'm also the guy who does spoke offsets to get the tire away from the chain.... I've also done spoke offsets on the fronts of two of my bikes...two of my bikes have seen over 100...

megomaniac replied 1 month, 1 week ago
I have same problem, 05' ktm450exc, 5" rim, 160/60 pirelli super corsa. The chain has rubbed off about 4mm of tire I'm guessing. I bought a spacer kit to shift the sprocket over a little. from this guy. http://launchzone.ca/SupermotoPages/supermoto.htm He doesn't make them any more though. I might even offset the rim a little too. there was a user selling a new unopened kit on here....

RWoods replied 1 month, 1 week ago
I have an 05 525 EXC with a 5" rear rim. The chain guide on the top of the swing arm keeps the chain from hitting the tire. The guy that laced my wheels has a lot of experience so maybe he figured in an offset, but mine works great, no problem. I had to ditch the bottom chain guide, no way that will fit.

tripleespresso replied 1 month, 1 week ago
The option of offsetting the wheel to much to the right just doesnt sit will with me. In my road racing experience (two AFM championships, two WERA seasons), we always worked so hard for perfect alignment. I going with the 4.25" in correct alignment with no chain guide gimmicks for clearance (or less anyway). I am trading the wheel for the smaller size, now on to experiment with 150 size tires...

brian replied 1 month, 1 week ago
any of those spacers cause undo stress on the components...and constantly need to be checked for tight ( loctite does help)....at least thats what i have seen from two guys up here....as far as alignment ...these are dirt bikes with 17 inch wheels and were designed to have a 21 inch front and a 19 inch rear that run approx 40 to 50 mph average speed, with dirt sections wheel alignment in my ...

sakke83 replied 1 month, 1 week ago
Quote: Originally Posted by RWoods I have an 05 525 EXC with a 5" rear rim. The chain guide on the top of the swing arm keeps the chain from hitting the tire. The guy that laced my wheels has a lot of experience so maybe he figured in an offset, but mine works great, no problem. I had to ditch the bottom chain guide, no way that will ...

sakke83 replied 1 month, 1 week ago
just read brians post, sorry for double.

Chase replied 1 month, 1 week ago
Quote: Originally Posted by brian on my three bikes right now my tire is approx 6 mm away from the chain I'd kill for 6mm. +3 don't get rid of the lower chain guide. Just wack off the inner mount and put the thing back on sans the cage part. And Brian is spot on with is assessment of perfect wheel ...

 

Top contributing authors

Name
Posts
tripleespresso
9
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-17 19:58:38)
Quote: Originally Posted by Skully25 they should be, definately, even in 150/60. http://www.pirellityre.com/en_IT/bro...SA_PRO-707.pdf http://www.pirellityre.com/en_IT/bro...SUPERCORSA.pdf check size chart What size do you recomend?
brian
6
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-17 00:22:16)
Quote: Originally Posted by exc rida ok sweet as ill give it a shot , thanks for the help show the other side of the tire, I wanna see the cleaance...non orings really help.... run the axel almost all the way back....
Skully25
5
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-17 16:58:38)
if you can get a hold of them, maxxis/goldspeed street legal slicks. if that's not an option, think my next choice in line would be the pirelli dragon (left) or diablo (right) supercorsa pro tyres if they have to be street legal. they're pretty pricey though, I used them because I could get a hold of trackday take-offs so it didn't cost me so much to run them.
Chase
4
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-17 11:58:38)
^^Best solution. Good call.
sakke83
3
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-13 16:32:57)
when a track is hard as nails, what bike woud you choose for the job
exc rida
3
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-17 00:58:38)
i just went to my local bike shop and they're going to swap the 160 to a 150 for free so im pretty happy with that. thanks for the help fella's.
GuzziMoto
2
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-13 17:32:57)
Quote: Originally Posted by Skully25 what tfunk says. people are often on about the rim while it's actually down to the tyre wether or not you'll have fitment issues. race tyres which have larger designations are less wide than DOT tyres of a smaller size. even mor so, tyres differ in actual size eventhough they might all carry the "160/60" badge. the difference in width between 2 different 160/60 tyres of the can...
kirkz
1
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-11 23:24:05)
the offset was incorrect. it should be 19-21mm offset off sprocket mounting flange to give chain clearance. Also you should run a 150 series tire because it is designed to go on a 4.5 to 5.0 inch rim. Motostrano does not build wheels so they dont know offsets. Those wheels came from Qtm inc. kirk Quote: Originally Posted by tripleespresso OK, mounted a 5" rear wheel laced to talon hub on my 2008 450 EXCR with a 160/60 Conti SM tire....
megomaniac
1
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-12 21:23:47)
I have same problem, 05' ktm450exc, 5" rim, 160/60 pirelli super corsa. The chain has rubbed off about 4mm of tire I'm guessing. I bought a spacer kit to shift the sprocket over a little. from this guy. http://launchzone.ca/SupermotoPages/supermoto.htm He doesn't make them any more though. I might even offset the rim a little too. there was a user selling a new unopened kit on here....
RWoods
1
user's latest post:
KTM 450 EXCR 5" rear wheel...
Published (2009-11-12 22:23:47)
I have an 05 525 EXC with a 5" rear rim. The chain guide on the top of the swing arm keeps the chain from hitting the tire. The guy that laced my wheels has a lot of experience so maybe he figured in an offset, but mine works great, no problem. I had to ditch the bottom chain guide, no way that will fit.

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