Coker frame with 29” wheel?

Think about what you wrote: adjusting the seat... The seat is
positioned relative to the axle, not the wheel size. You only need to
adjust the seat if you change the length of the cranks, not the wheel
size.

A Coker wheel is 36 inch diameter, meaning a greater diameter of 7
inches than the 29er. The radius is the important thing for frame size.
You will have 3.5 inches of extra clearance between the top of the 29
inch tyre and the bottom of the fork crown than would exist between the
top of the original Coker wheel and the bottom of the fork crown.

So, apart from changing the wheel, there would be nothing to worry about
unless you are worried about the aesthetics (US = esthetics) of the new
set up with its big gap.

You can easily and safely put a 29 inch wheel in a Coker frame.

DO be careful to put the wheel in the right way round. A carelss
mistake could lead to your pedals unwinding and damaging your cranks.

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Mikefule said:

* A carelss mistake *

Sorry, I had to!

Do you only have a Coker? Bedford's MUni frames will fit those wheels

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I did that when I built my first 29er wheel. At the time, my Coker wheel
was taco'd so I wasn't using the frame anyway. I even welded on some
v-brake mounts. The nice thing about the extra space was that it made it
easy to lock it up with a chain.

cheers... Joe

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Brian MacKenzie said:

*Sorry, I had to!
*

Oops! Carelss of me. Bollxo!

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Hmm, this is interesting.
This may mean I don't have to go buy a 26" uni.
I never imagined putting a smaller frame on my Coker frame.
Thanks for that photo, I had to see it to believe it!
Will any 29" or 26" wheel fit? Will any other frame fill so neatly?

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There may be width issues with different hubs, but I think it is
possible to "sprag" a frame a bit wider to take the wider hub.

There may be flexibility issues if you use a long-legged frame for hard
MUni. However, in principle, any size of wheel will fit in a Coker
frame.

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Mikefule said:

*Think about what you wrote: adjusting the seat... The seat is
positioned relative to the axle, not the wheel size. You only need to
adjust the seat if you change the length of the cranks, not the wheel
size.*

My train of thought for seat height, though I didn’t mention it, was
that I’d have different size cranks on a 29” than on my 36” but I may
not, thanks for pointing it out.

Quoted message said:

-Originally posted by Mojoe-
*I did that when I built my first 29er wheel. *

I think I’m going to get a 29” wheel now I know it’ll work OK, thanks
for all the input guys.

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