Using Vittoria pitstop

topcattim

I run tubulars on my TT bike, so I carry a can of Vittoria Pit Stop with me. I've only ever needed to use it twice and each time it's failed (I've used a different can each time of course). I've made sure that I'm opening the valve, attaching it straight etc, basically all the advice that I see at their youtube link but each time it has been very half hearted, doesn't seem to be pushing out any sealant or any compressed. Long walk back...

Has anybody got any advice (apart from to buy clincher wheels!)?

joe2008

Run a sealant in your tubulars such as Tufo or Stans.

I run tubulars on my everyday bike, and sealant's work great.

As a confidence builder cut an holes in an old tubular and watch them seal.

sungod

pitstop is useless

ignore 'tests' that show holes from needles/nails/similar being sealed - tyres/tubes are stretchy, even a large pointy thing is usually making only a tiny hole, but on the road i find most punctures are from blade-like glass/flint that cause a long cut, most sealants fail miserably with these

i've found tufo extreme is the best sealant for tubs at road pressure, on veloflex/vittoria/dugast tubs cuts up to 3 mm will hold long term

you need to remove the valve core to squirt it in, about a third of a bottle is enough

being an effective sealant, it'll happily the seal valve stem, core, even the nozzle of the bottle, so some care is needed in applying it

it seems to have a shelf life, maybe two years, once opened it tends to start clumping in the bottle, i store fresh ones in the fridge, they seem to last better

i would not put it in a good tub as it'll dry out after a few weeks

joe2008

sungod wrote:

by sungod » Mon Sep 24, 2018 9:04 am

pitstop is useless etc

Pitstop is latex based and it doesn't work well with butyl tubes. It does work with latex tubes.

For butyl tubes add Tufo Standard before you ride, take Tufo Extreme with you in case of a larger cut; I've had no need to use Extreme yet.

sungod

joe2008 wrote:

sungod wrote:

by sungod » Mon Sep 24, 2018 9:04 am

pitstop is useless etc

Pitstop is latex based and it doesn't work well with butyl tubes. It does work with latex tubes.

For butyl tubes add Tufo Standard before you ride, take Tufo Extreme with you in case of a larger cut; I've had no need to use Extreme yet.

all my tubs have latex tubes

pitstop never worked, it is far too thin to seal all but tiny punctures, which makes it useless

topcattim

Thanks all, it looks like a sealant plus maybe some clincher training tyres should be the way forward.