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Old 06-11-2014, 12:32 PM   #1
BigTony OP
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KTM Cush Hub Wheel Build - Issue/Question for experts

I'm building a rear KTM cush hub rear wheel from a kit I bought from an inmate.

It's a ktm 640 hub, with excel rim

I laced it up and the spokes are only just bottomed/snugged at this point. Not tight, but 1/4 turn past bottomed. The lacing pattern seems the same as others I've seen, but it looks like the inner spokes on the brake rotor side of the wheel aren't fully seated.

I'm not sure if they'll pull down as I tighten the spoke but am hesitant to tighten further. I suppose it could be the powder coat on the hub interfering, but the outer spokes on the same side don't seem to have the same problem.

Does this look like a problem, i.e. spokes not correct for the application? An assembly problem? Thoughts?

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Old 06-11-2014, 01:09 PM   #2
81forest
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I'm not an expert, but I'm in the process of building a rear also and mine look exactly the same as yours. Have not tensioned the spokes yet, but my guess is that everything will snug up tight with tension. Nice finish, rattle can or powder coat?
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Old 06-11-2014, 02:40 PM   #3
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Tony,

I know those were the spokes from that hub as I disassembled it myself. I suspect a little powder coat interference combined with the cross 3 lacing pattern? I'm far from an expert though. I suspect they will seat fine when tensioned though.

Hub is powder coated Harley textured black
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Old 06-11-2014, 05:35 PM   #4
BigTony OP
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Awesome, sounds like I'm good to go thanks for the confirmation. I'll start truing them up and hopefully everything will seat in.

Yep the wheel looks sweet so far and I can't wait to get it on my 'berg.

Thanks again sailah - you the man!
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Old 06-11-2014, 06:06 PM   #5
scudrunner82
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Quote:
Originally Posted by BigTony View Post
Awesome, sounds like I'm good to go thanks for the confirmation. I'll start truing them up and hopefully everything will seat in.

Yep the wheel looks sweet so far and I can't wait to get it on my 'berg.

Thanks again sailah - you the man!

Looks familiar from when I built my cush hub for my 350. They should snug down when you tighten the spokes.
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Old 06-11-2014, 07:41 PM   #6
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Are the spokes from KTM or from a custom shop, like Buchannons? I've gotten spokes that were too long and intended for a non-dimpled rim.

It looks like you have it assembled right.
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Old 06-12-2014, 12:54 AM   #7
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Consider tapping the ends?

b
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Old 06-12-2014, 01:57 PM   #8
BigTony OP
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OK so I have another question; I'm curious on how folks ensure they've got the rim centered on the hub when truing

Do you take a specific offset measurement from the bushing to the center, or just true it straight and assume it'll be close enough?

The sprocket carrier is backordered until July unfortunately, so I don't have a good reference from which to measure the center. If measuring is the proper method, does anyone know how far over from the bushing on the brake rotor side the rim should be?

Or maybe I'm over thinking it?
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Old 06-12-2014, 02:13 PM   #9
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You might need to make a makshift wheel jig .so you can spin the wheel
and have referance points for offset other wise you can buy them for $100
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Old 06-12-2014, 08:04 PM   #10
81forest
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The subject of wheel centering came up in a previous thread, some good info for your reading pleasure:
http://www.advrider.com/forums/showthread.php?t=896668
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