Bicycle Mechanics - Tubular Glue Question
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01-15-10, 10:09 PM
I have 2 different glues that I've been working with over the past week. One is Pastali, and the other is Pana Cement by Panaracer. When I was using the Pastali glue, I botched the job (due to an excessive amount of old glue on the wheel). So, I removed the tire, stripped all the old stuff off and started fresh, using Pana Cement. The Pana Cement seems to have gone on much better, and has a much firmer feel to it, while the Pastali glue (on the tire that I botched) is still very tacky and soft...it hasn't hardened at all. Is this normal? Is Pastali glue crap, or is the Pana Cement just that much better?
I use to use Vittoria and Wolber glues and liked them but that was years ago and I think those may be impossible to find now. The newer stuff like 3m Fastrack works very good from others I know that use it.
Here's a few web site that may help with detailed info on how to glue these things. http://www.bostontriathlonteam.com/articles/tubulars.html
01-16-10, 11:42 AM
There is a tubular glue made by tubasti that is affectionately known as elephant snot. It is a thick white goop type of rim cement. It retains a bit of tackness even after many many miles. This is a relatively good quality of tubular glue. The proper method to apply is to put 2 or 3 thin layers on the rim and 1 or 2 thin layers on the tire. The operative word is thin. I don't recall using pastali in the past but if it is like tubasti then putting a really thick layer on would cause it to remain somewhat soft and ineffective. I put a plastic sandwich bag over my hand and use a finger to spread the glue between spoke holes and then on the rim. Wait a few hours and apply another coat. For the tire...inflate it and roll it inside out, mount it on a spare rim or somehow suspend it in the air. Us the same hand in bag technique to smear a thin layer of glue around the base tape. deflate tire to the point that it just retains a round shape and stretch/roll it onto the rim starting from the valve. Check to make sure it is centered properly and then pump up till hard. Let sit for 24 hours and then deflate to make sure tire is secured to rim. If it checks out ok, reinflate and ride. These procedures can be used for any of the tubular glues except the brands that set up hard like shelac...I have stayed away from those.
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