Actually you can use that hub, just toss 25mm worth of spacers inOriginally posted by ViolentVolante
smartass
and no, the frame of next YEAR will be an M-pire, and thats a 160
cheap flex fix for 03 SGS's
- Thread starter schwaaa31
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Is it just me or would a drilled out King 160mm Tandem hub be sweet on an m-pire, hmmm, i might try this next year
Originally posted by zedro
well theres also knowing what you're doing, and then doing it right. Making holes in itself might not be intrinsincly harmful, but how you drilled them, how big and what you did with them after may be. Things that at the very least require good alignment shouldnt be done haphazardly either.
Then again i would be running some FEA on my machine on it beforehand....
I'm not stress guy by any means.... but as long as he's REALLY sure the nuts are always tight, is he really looking for trouble.
Obviously, knowing where the stress concentrations are on the links when they haven't been hacked would be nice.
But for example, frames and floor beams in airplanes are actually pretty flimsy.... or more so than you would expect anyway. So if we want to rivet a new disconnect bracket onto airplane structure, we have to run it through the stress guy. But generally they don't care because any holes we are drilling are being filled with a rivet. So the general assumption (most of the time), is that the holes will have no effect.
Now of course I'm comparing apples and oranges here.
1) this is a great big hole relative to the overall dimensions of the link
2) it's not being fastened with rivets.
3) the linkage in moving a whole lot more that airplane structure is
I'm assuming that dw has done some FEA on this very linkage. So I would take his word that it's a bad idea. But I'm not sure that the theory is so bad, but rather the execution of the idea.
Maybe instead of the jam nuts on the inside, he should use a hefty piece of carefully measured tubing between the links for the bolt to pass through, like an NAS47 spacer.
But he's pretty screwed anyway because the holes a cockeyed. But still I don't the idea is TOTALLY without merit....
it could be saved by milling larger (and concentric!) holes, and pressing in tube/spacer thingies like you alluded to; that would reduce the stress concentration like the rivets would. Like the way the swingarm on my bike is held together.