rpenmanparker 

That has already been factored in.

Really, I'm a bit disappointed. I expected a small weight hit, but not 80 g.

texaspandj

How much difference would a latex be in weight and price?

DiabloScott

You're right, that is surprising... maybe the new basetape is heavier too?

Latex: 60- 80g
Butyl: 100-120g

rpenmanparker 

My butyl tubes are right in the middle of your latex range.

rpenmanparker 

I purposely picked butyl for better air retention and better durability around the valve stem. Several of my Vittoria tubular tires with latex tubes have failed at the valve stem. In fact that is the only type of failure I have experienced with those tires. So I wanted a stronger tube in that area...just not THAT much stronger.

Replacement latex tubes were about $5 more. I thought the weight would be the same.

DiabloScott

OK, well poking around weight weenies, (700c 18-25) I see the lightest latex tube is 54g and the heaviest butyl tube is 122.

So extreme to extreme would only give you 68g difference. Can't blame the whole 80g difference on the tube. Maybe they used heavier thread to stitch it up too?

Or maybe your measurements are off.

Psimet2001 

I was going to laugh at you then I went and took an off the shelf run of the mill butyl tube that I sell all day and night and weighed it (with my coffee scale) with a 60mm valve - 89g

As others alluded to - either something is off or something else is in play.

Grand scheme - if 80g was an issue then you should have just bought a new tire.

f4rrest

Perhaps they added some aero.

rpenmanparker 

All possible.

rpenmanparker 

Well, not exactly. As a life long experimentalist the fun here for me was in the trying. I learned something. The money is insignificant. I enjoyed going through the process. Thanks for the input.

woodcraft

You could ditch that heavy mounting tape to make up the difference...

ksryder

You could probably drillium the tube to shave a few grams

JohnDThompson 

Don't laugh. I knew some weight-weenie track riders who did just that.

woodcraft

Just teasing rpenmanparker- he's a fan of the tape.

qcpmsame 

Been patching tubs myself, but its getting tiresome and finger abusive. Rallys are verbotten now, rock cutting is way too prevalent on our rural roads with sharp inbedded rock aggregate. Ribble still lists the Vittoria Pave and Roubaix on line. Tire Alert sounds like a good choice, might need to try them.

Bill

Dave Mayer

I've been on the same set of tubulars for several weeks now - on daily rides which sometimes includes long stretches of gravel.

Tufo 22s: very puncture resistant tires, with minimal tread wear.

I know that I have at least one pinprick flat in the front, and who knows how many in the rear.

Anyway, 20cc of Stan's in each keeps them inflated, and riding as if nothing happened. It is a rare puncture that is even noticeable, before the liquid latex seals up the hole. It takes something truly special to cause the tire to become flattened, something that would have killed a clincher tire.

rpenmanparker 

Thanks Dave, but on the Vittoria Corsas CXs sealant doesn't seem to fix the problem, which is tears in the tube around the valve stem. My technique for attaching and removing the pump head is pretty good. Never a problem on clincher butyl tubes over decades of experience, but those Vittoria latex tubes seem to be very fragile in that area.