Brake servo vacuum hose

[Richybaby]

Excuse me if this is a numpty question, but I have never really thought anything about this until now. The vacuum hose that connects the brake servo to usualy the plenum on a petrol engine, for the servo assisted brakes, is this hose supposed to be any particular type i.e very rigid, as oppose to a softer hose, I'm thinking that if the vacuum is great enough at any particular time that it may overcome the rigidity of a soft hose and suck it flat, causing poor brake performance. Can anyone enilghten me on this issue. Cheers.

[Trooper2]

The brake booster hose is usually molded to a specific shape to fit a specific car and must be specially reinforced so it won't collapse. I know you aren't supposed to use heater hose as a replacement but I did in an emergency on my old Trooper and my brake pedal effort was increased.

These days most booster hoses are made out of a ridgid plastic (nylon?) tubing.

Edited by Trooper2 on Friday 23 March 15:42

[Richybaby]

Trooper2 said:

The brake booster hose is usually molded to a specific shape to fit a specific car and must be specially reinforced so it won't collapse. I know you aren't supposed to use heater hose as a replacement but I did in an emergency on my old Trooper and my brake pedal effort was increased.

These days most booster hoses are made out of a ridgid plastic (nylon?) tubing.

Edited by Trooper2 on Friday 23 March 15:42

Thanks for that Trooper2, just helps to confirm what I was already thinking. Cheers.

[r1ot]

try Car Builder Solutions www.nfauto.co.uk as they sell servo vacuum hose off the reel for about £6+vat a metre.

[Sam_68]

Most decent motor factors sell vacuum hose. If it's got to run a long way, though, it doesn't do any harm to use steel tube for the long, straight runs and just use short sections of reinforced rubber hose for the connections.

[Richybaby]

Once again, thanks guys for your input, cheers.