Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
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Lennard Zinn in a recent VeloNews web site tech article refers to the use of evaporated milk as a leak sealant but doesn't give details as to how it was mixed. Here is his quote:
"....in the early 1980s I used to pump evaporated milk into tubulars that had slow leaks in them. I had a frame pump I used exclusively for this purpose."
However, there was a downside to this:
"I did have some blowouts with them and can certainly relate to the putrid smell and the spray on the adjacent riders."
So, yes there is a substitute. It's obvious why it isn't more popular.