Tubular Questions

Hi all
I just have a couple of quick questions about tubulars:
1. Is it possible/ok to remove an already glued tyre from a wheel and then re-fit it? I have got a set of tubs that i bought last summer but on checking them the other day the glue seems to have hardened quite a bit. I'm sure they are ok (the tyres are still in great condition - I don't want to throw them away) but would rather re-fit them if at all possible.
2. Can anyone suggest a cheap tubular rim (rim only) that I can use to pre-stretch my spare tires?
Thanks as always
I just have a couple of quick questions about tubulars:
1. Is it possible/ok to remove an already glued tyre from a wheel and then re-fit it? I have got a set of tubs that i bought last summer but on checking them the other day the glue seems to have hardened quite a bit. I'm sure they are ok (the tyres are still in great condition - I don't want to throw them away) but would rather re-fit them if at all possible.
2. Can anyone suggest a cheap tubular rim (rim only) that I can use to pre-stretch my spare tires?
Thanks as always
0
Posts
2 - you can also use a cheap clincher rim (may be cheaper)
As above, you can stretch the tub on any rim
2nd H - http://vintagebikecave.com/product-category/vintage-bicycle-parts/rims/rim-types/tubular-rims/ from £10
New - http://www.bikehubstore.com/category-s/153.htm
1- unless you can easily push the tub away from the rim, the glue is ok - traces of exposed glue at the very edge can become hard/brittle, but just inside still be fine
2- do you actually need to stretch them? not all tub/rim combinations need stretching, i find veloflex carbons (and the tufo i use as a spare) go on fine as-is, but some, like conti, are notorious for being much harder to fit
conti's barely stretch and Vittoria on Nemesis rims don't need stretching.