Re: cold setting 135 mm rear end down to 130 mm



J

JeffWills

Guest
Boris Foelsch wrote:
> I have a Salsa La Cruz frame that is my only 700c wheel / 135 mm rear

end
> frame. I wish I could interchange wheels with my 130 mm bike and my

126 mm
> bike (which I plan to have cold set to 130). I like the mud

clearance, but
> I'd like to explore the possibilty of narrowing the rear spacing.
>
> Of course, I have my doubts, but I though I'd solicit opinions here

first.
> It's Columbus SLX, I believe.
>
> Thanks in advance,
> Boris


If it's a steel frame, bending it 5mm is nothing. You won't notice the
difference in mud clearance, either. You could probably get away with
putting one of your 130mm width wheels in while squeezing the stays
together- no "cold-setting" needed. You'd just have to do this every
time the wheel was removed.

On the other hand, if it's particularly precious to you, you should
have the frame completely checked on an alignment table after narrowing
the stays. It probably won't make any difference, except to your
wallet.

I'm with Chalo, though- your wheels would be better off if they were
all widened to 135mm. I've done this on a couple of my bikes (I'm not a
wheel-swapper, though), and at least one wheel survived several years
without needing retruing.

Jeff
 
"JeffWills" <[email protected]> wrote in message
news:[email protected]...
>
> I'm with Chalo, though- your wheels would be better off if they were
> all widened to 135mm. I've done this on a couple of my bikes (I'm not a
> wheel-swapper, though), and at least one wheel survived several years
> without needing retruing.
>


I don't understand. You had bikes with 135 mm rear spacing already and then
widened 130 mm wheels you had for use in them? If so, are you talking about
stiffening the wheels? How - by changing the offset? How did you achieve
that or whatever you're implying?

My understanding is that built from scratch, a 135 mm rear wheel would be
stiffer than a 130 mm rear wheel built with the same hub.

Boris
 
"JeffWills" wrote:
>
>>I'm with Chalo, though- your wheels would be better off if they were
>>all widened to 135mm. I've done this on a couple of my bikes (I'm not a
>>wheel-swapper, though), and at least one wheel survived several years
>>without needing retruing.
>>

Boris Foelsch wrote:
>
> I don't understand. You had bikes with 135 mm rear spacing already and then
> widened 130 mm wheels you had for use in them? If so, are you talking about
> stiffening the wheels? How - by changing the offset? How did you achieve
> that or whatever you're implying?
>
> My understanding is that built from scratch, a 135 mm rear wheel would be
> stiffer than a 130 mm rear wheel built with the same hub.


The proper way to widen a 130 hub to 135 is to add a 5 mm spacer on the
left side. You then need to re-center the rim by means of spoke adjustment.

The result is indistinguishable from a "built from scratch" 135 mm wheel.

Contrary to popular belief, there's no need to replace the axle,
standard QR axles are considerably longer than they need to be. The
axle does need to be re-centered, though so that there's a similar
amount of projection past the locknuts on both sides.

Sheldon "Wide Load" Brown
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