tube air pressure SR4

rodmax · 16 November 2010, 10:50

I have had my sr4 since june and I never wanted to overinflate it, while out this summer after the sun went down the tubes would become soft , not dangerously soft but too soft to stay out longer. Right now daily temps around 3-7c and night temps below zero it looks almost completely deflated.... Just wondering how much air to put in it if I wanted to use it now with the water even colder... I never put too much air in it because it is 26 years old with the orriginal tubes and I dont want to tear the seams...

Thanks,Rodney.

chewy · 16 November 2010, 10:54

1.5-2psi.... or as I do pump them up till your fist bounce's off them.
You'll do well to tear the seams, think of the pressure exerted on the tubes if you stuff it or even just stand on them.

willk · 16 November 2010, 11:05

I suspect that you run a higher risk of damage by running with your tubes underinflated than from simply overinflating them. Rib tubes should be hard when in use.

Chewy's "Rule of Fist" is right

chewy · 16 November 2010, 11:27

Quote:

Originally Posted by willk

Chewy's "Rule of Fist" is right

Thats a few times this year I've been right, I'm doing well!

9D280 · 16 November 2010, 13:24

I'm with Chewy on this one too......

If you are encountering such thermal changes when you are out and about, dig out your pump & add some air when the sun goes down. When back, deflate slightly in preparation for the next day.

rodmax · 16 November 2010, 14:59

THANKS,
9D280-- that is exactly what I have been doing, just was not sure if it was the rightway to go about it..
Thanks again.