Configuration Conundrum - help!

[Crell]

I have a configuration nightmare which is really bugging me so here goes.


1 x 1.25 inch head tube frame


1 x 1 inch Manitou (Bradbury) with an unthreaded steerer
or
1 x 1.25 inch Manitou 1 with a threaded steerer

Plus a :

1.25 Manitou ahead Stem.


So….
I’d like to run the 1 inch fork in the 1.25 inch frame for historical reasons.
I’d like to run the 1.25 Manitou Stem
The fork is the main priority though.


Having asked a related question about this a couple of weeks ago I’m still stumped.

A sleeve tube would be my only option to go from 1” to 1.25”?
I imagine this just goes over the top of the 1” steerer in which case I wouldn’t be able to use the Manitou Stem? though I could try to swap it with someone for a 1” ahead version (I’m not sure they exist?).

In fact if I use a sleeve, does this only go as far up the steerer as the top of the headset, and then you clamp the stem to the original steerer.
How does it clear the bottom race?

Does anyone have any pics to illustrate this?

Can I shim the stem also, though I can’t see how that would work?

Thanks in advance.

 

[pete_mcc]

2 options:

1) drop justbackdated a line and get a Pace 1.25 steerer off him and put it in the manitou 1 crown (it'll fit perfectly) and swap that crown and the bradbury one over. Then get a 1.25 ahead set and you're done.

2) get a set of headset shims, shim the 1.25 frame down to 1" and use a 1" aheadset and the 1" bradbury forks. Then get a 1" to 1.25" sleeve shim and cut it to the same size as the manitou stem and bolt it on to the 1" steerer and you're done. The only difficulty you'll have is finding a 1" to 1.25" sleeve shim.

 

[holden]

If it were me, hack and all, I would locate a 1.25-to-1.00 headset reducer for a 1" headset so you can use the 1" Bradbury, then get a 1.25-to-1.00 shim to run the 1.25 Manitou ahead Stem.

I only know of 0.125 increment headset reducers so you might need two.

This is quite "shimmy", so not necessarily ideal. Simpler then the sleeve in that resolves the headset race issue.



EDIT: LOL ... 1 minute behind Pete ...

 

[pete_mcc]

Forgot to say the sleeve shim only goes on to the exposed bit of steerer above the top of the headset, not the whole length of the steerer!