My experience with Silca pumps is that you needed big arms and technique to
get good pressures.
We had a customer that had the upper body of a body builder. No jersey
sleeves were large enough the fit him, he would cut the sleeves off them.
Karl has having troubles with his tubulars blowing out and we could not
understand why. Finally he told use that he would just pump his tyres up
hard and ride. Upon checking his tyre pressure we found that Karl was using
a Silca pump to fill his tyres up to 160 psi! That was a bit much for late
70's cheap tubulars! Jeff Hutchinson allstarbikeshop.com