Talk to me about building a dual sport wheel set!

Discussion in 'Thumpers' started by 81forest, Jun 17, 2013.

  1. 81forest

    81forest ADDRider

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    I ride a plated KTM 450 RFS, and I've been venturing out further and further into the occasional dual sport ride, but I also ride single track any chance I get. Swapping tires the night before a ride kind of sucks, and so does riding the MX tires on fifty miles of highway. I'd also like a cush hub for the pavement. People will tell me to get the DOT-legal trials tire, but I have another idea...

    I have a wrecked front wheel that I got for free, and a rear wheel from an older LC4 (with the cush). Both rims are shot, but hubs are good. A pair of Warp 9 rims is $200 on ebay, spokes are about $40 per wheel. I have a Black Widow motorcycle wheel truing/balancing stand, and I have been building bicycle wheels for over ten years. I already have some DS tires; I could have a whole new wheel set for under 3 bills with the pride of doing it myself, plus on black spokes and rims! Thoughts or advice from folks who have built their own wheels? Any good books or web links to recommend?

    I figure it can't be that different from bicycle wheel building. :ear
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  2. kubiak

    kubiak Long timer

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    its the same as bicycle wheels as far as i can see. i have done over a dozen wheels and its super easy. if you can take a pic of a wheel done so you can see the spoke pattern just in case.
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  3. mcma111

    mcma111 Long timer

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  4. 81forest

    81forest ADDRider

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    Excellent post, that is exactly what I was looking for. That is a really nice truing stand! I use a dishing tool for the bicycle wheels that I think will work for moto wheels as well.

    I might purchase those Buchanan spokes to get that lube. I use a product called "spoke prep" by Wheelsmith for bicycle spokes but I think it might not be ideal for moto spokes. But maybe it could work?

    http://www.wheelsmith.com/ourtools.html
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  5. mcma111

    mcma111 Long timer

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    I don't think your dish tool will work unless your building 20" or 700c size wheels.

    The spoke lube Buchanans sends is for the stainless spoke and stainless nipples to keep them from galling.
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  6. 81forest

    81forest ADDRider

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    Hmmm. In my understanding for bicycle wheels, proper dish is achieved by simply making sure the rim is centered over the axle, rather than being centered over the hub flanges. For bikes, a dish tool is not necessary, it just makes the job easier and quicker. You could properly dish a wheel without the tool by taking it out of the stand and putting it back in the opposite direction, and comparing the run-out against the caliper in the truing stand. When the caliper is the same distance to the rim when you flip the wheel over in the truing stand, the wheel is dished. That is a crappy explanation and I may be missing something. Thoughts? The basic idea is that the rim is dished when it is exactly centered between the two points on the axle that are clamped in the frame.

    I would not trust measuring the dish of the old wheel, because you couldn't be sure it was correct unless you put the wheel in the stand and checked for even run-out on each side. Correct?
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  7. mcma111

    mcma111 Long timer

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    Your idea of dish is correct. I was just commenting that your bicycle tool will not work as the rim is only 18 or 21" where as the bicycle rim the tool is designed for is 27". Size matters. :lol3 :lol3 :lol3

    Before you disassemble the wheels measure them mounted on the bike. Centered in the forks and swingarm.
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  8. davesupreme

    davesupreme grand poobah

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    i built the wheels on my 450 SMR... set of 17's w/a cush, and a 18 rear w/a cush also for dirt.... if you get the spokes/rims from woody's or buchanan's, your gonna get the right ones for your rims/hub. there's angles reamed in the rim dimples to agree w/your hub..... they pretty much just tighten up correctly.... if you get cheapo warp 9 or ebay shizzit, who knows?... there's alotta voodoo in the rim holes/drilling angles and how they work w/the spokes/hubs, so if you get them from a good place and it's set up right, it's really pretty easy.... if it ain't set up right, it's not gonna be good..... i like my shizzit tight when i'm goin' fast, you dig?.....:eek1
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  9. 81forest

    81forest ADDRider

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    Thanks for the info, much appreciated. I did not know that the dimples on the rim were specific to the manufacturer's hub... weird. Voodoo is right!

    mcma111, I think I have to powder coat these hubs now after those candy-apple beauties in your thread. Plus install new bearings. With the cost of an Excel rim from Buchanan's at $216, there goes my sub-$300 wheel set!
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  10. 81forest

    81forest ADDRider

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  11. dnrobertson

    dnrobertson Big Bike, Slow Rider

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    I think the "index" of the rim (how the holes are angled) for your RFS is the same as the Japanese bikes. There is an issue for Husaberg and KTM 640s where the index of the rim is different (probably more). See here for more details if you want it: http://www.advrider.com/forums/showpost.php?p=6079421&postcount=621
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  12. mcma111

    mcma111 Long timer

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  13. 81forest

    81forest ADDRider

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  14. mcma111

    mcma111 Long timer

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    Call Buchanan's for the spokes.
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  15. crypto666

    crypto666 Long timer

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    I have started running DID Dirtstar ST rims in place of Excels. They use stock spokes and seem every bit as good.
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  16. bamfslap

    bamfslap Been here awhile

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    Building wheels is actually a lot easier than it looks. With your bicycle experience it shouldn't take more than an hour. I'd say less but truing can take more time than assembly (sometimes). And of course cut the old ones with a grinder saves a lot of time. Most the time mine were seized.
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  17. mcma111

    mcma111 Long timer

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    Chop, chop
    [​IMG]
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