I think I might have to give tape a go...I glued my tyres on so well it was difficult to say the least. Without the tyre levers I would have been there even longer.KCookie wrote: ↑Thu Mar 29, 2018 9:34 pmUse tape and can have a tyre changed in minutes and im a novice. It's so easy and clean. Carry a tufo tyre, nice a light no pre stretching and you'll be on your way in 5 mins with clean hands.Wingnut wrote: ↑Thu Mar 29, 2018 1:06 pmWell stuff that! I've been training on tubulars for the last 7 months and got my first puncture today, took me over half an hour to peel the old tyre off and then a nightmare to stretch the spare pre glued tyre on.
I used to race on tubulars over 20 years ago but training on them...f#@&k that! I'm back to clinchers for my training wheels from now on...
My question is more to do with tyre sizing.
In Clinchers.. the wider the rims the wider the spread (in most cases) so my 26mm Specialised turbo cotton on Roval CLX50 measures in at nearly 30mm wide (caliper).
The nice thing about this combo is that the profiles align almost perfectly.
How does tubulars present itself on narrow/wider rims? As there is no open ended part to spread.. I would expect tubs to have some spread on wider rims but not too much?
Using a wider tyre than the rim(narrow) would present a mushroom shape as well?
For instance, on Bora 35s (24.2mm width) is this better paired with (profile wise) 25mm Veloflex Roubaix or 27mm Vlaanderen . I know there are more to tyres than profiles matching the rims.
Does the equation change when going to a rim that are wider?
Thanks for answering questions from a tubbie (tubular newbie).
taking extreme cases...
- puting a large diameter tub on a small radius rim bed (typically on a narrow rim) will mean the basetap will make best contact at the edges of the rim bed, but the centre may not stick so well
- the other way around, a narrow tub on a large radius rim bed will make good contact in the centre but the edges make not even touch the rim bed, this is worse than the first case i think
neither is good, you want a good match for strong adhesion
the diameter of a tub isn't really affected, it is a tube, the internal pressure keeps it circular
on the boras personally i'd go 25mm for road, afaik a tyre bulging out beyond the rim is not good aerodynamically
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