Tubs

They come in gumwall though right?

Yeah but my front tyre is black.

last try, 24mm tubs for 18mm external width rims (nos campag omega strada v)?

i wonder if it's also 19-25 as it's with clinchers:
http://velobase.com/CatalogScans/Campagnolo/Campy_1991Rims.pdf

Gone for the Vittoria Corsa Graphene. They're for racing so decided it makes sense to spend a bit but tubs are fucking pricey aren't they? I wanted latex tubes over butyl for faster rolling.

Yeah. I use Veloflex clinchers with latex tubes when racing as they're about half the price of tubs and I can't really tell the difference.

I forgot valve extenders. What works with the Vittoria ones?

No universal standard it seems. This is cycling after all.

I use Continental valve extenders on my more modern Vittorias - all the ones after they binned their stupid red replaceable valve thing. They're easy to get hold of, they work, and they're available in lots of different sizes. Remove the valve core, insert extender, replace valve core. Job done.

Thanks chief. Do you use PTFE?

Nope. The Conti valve extenders have their own sealing ring, so PTFE tape isn't necessary as long as you do them up reasonably tightly.

Tip: If you want your gumwalls to stay gummy, don't try and force them between the manky old pads in the calipers to check for fit.

That said, I'm a bit in love. Gumwalls may have peaked in stylistic terms, but I do like them on a black bike.

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So I'm about to get gluing. Planning to build up two coats of glue on the rim and put one on the tyre and let dry.

For the final coat to activate the glue and get it on the rim, is there a reason I can't put that on the rim?

If I put the final cost on the tyre, it's going to go everywhere as I'm getting it onto the rim.

Is that enough glue?

is there a reason I can't put that on the rim?

I always put the final coat on the rim. One coat on the tyre is enough.

Is that enough glue?

It depends, what are you using the tubs for? For road, three layers on the rim and one on the base tape is probably ample. For track or cyclocross use then you might want to put an additional layer or two on.

Road use. Thanks a lot.

Glue on the gumwalls which is annoying. Thumbs hurt and rear isn't centred 100% perfectly (but it's straight and wrinkle free). On the whole, that was pretty painless. I dare say I found everything up to the actual mounting quite therapeutic.

I'll ride them tomorrow and remount the rear if it seems odd but I think I'm nitpicking.

I emailed Corima regarding a wheelset I recently acquired; their advice for my rim (19.2mm width) was 23c max and they advised against trying to glue a 25.

thanks, i have similar feeling about mine so decided to put 21C there and use it as training wheels on track. for road use i'll build another set. i'm lucky to have few nos old rim sets, perfect for everyday riding.

The Corsa G+ are absolutely lush. Seem to be able run them nice and hard (120psi) and still get a lovely comfy ride.

One of the best things about tubs. I used to ride to the track with 140psi in the old Corsa Evo III and they still felt comfy

Thats odd becuase the base tape on a 25mm tub is the same width as on a 23mm tub. So yes you can glue a 25mm tub to an 18mm rim but the curvature of the rim might not be ideal. For example mavic gel280 rim dont seem to have a profile that is ideal for any tub it tried had to use a fair bit of glue to get the edges of the base tape to stick.

It not about layers so much but about the ammount of glue. I dont put layers on any more takes too much time instead i make sure my one layer is thick and uniform. This has the same effect. Also to avoid glue getting everywhere hang up the tyre and rim overnight and mount the following day. This works a charm. Bond will be just as strong.

Cheers - will try that next time. And maybe get all black tyres.

Came up with a new term today for when you do something just because the pros do for the sheer romance of it: promantic.

Yeah. I use Veloflex clinchers with latex tubes when racing as they're about half the price of tubs and I can't really tell the difference.

Veloflex, the king of open tubs in my opinion.

Been migrating all wheels to 25mm recently (I'm conservative) even better ride.

Tubulars are wonderful and all the joo-joo surounding them is all fine and dandy but for any use less than competition one has to wonder if they are worth it these days?

Tubs are a bit like listening to a vinyl record - sure you can probably listen to music quicker with your phone, and the difference in sound isn't really going to be that noticeable. The reason people still buy and play vinyl is for the object itself, and the ritual of playing a record.

I actually like the gluing process (no, I'm not sniffing) and that has me coming back to tubs every now and again.

The main advantage of tubs is you can pick up really cheap top-end wheels second hand when mamils realise they're a bit of a faff

Tru dat

sold