Pressure testing lines

[Ace]

I see nowhere in the plans to test the brake and/or fuel lines for leaks. Is anybody doing this? If so, what method are you using? vacuum? pressure ? thanks ,
Ace

rv10
40567

[Kahuna]

Originally Posted by Ace

I see nowhere in the plans to test the brake and/or fuel lines for leaks. Is anybody doing this? If so, what method are you using? vacuum? pressure ? thanks ,
Ace

rv10
40567

I think you will find that most folks step on the brakes and fix what leaks

For fuel, turn on your pump and see what leaks. On the fuel, you can cap off the line at the engine and turn on the pump.

Low tech, but works.
Best,

[N916K]

Originally Posted by Ace

I see nowhere in the plans to test the brake and/or fuel lines for leaks. Is anybody doing this? If so, what method are you using? vacuum? pressure ? thanks ,
Ace

I had the local A&P test mine. Cost me 10 dollars total for all my oil and fuel lines, he even remade one fitting. Getting to know the local A&P works out very well for both parties. They usually have some good advice on engines and you can teach them some metal working tricks. If they know they can come by your hanger and get the odd bolt of rivet, they will probably be quite generous when you need a hand.

[Kyle Boatright]

I have a hose testing rig I built out of a hydraulic screw jack. If anyone wants to come to Cartersville, GA on a weekend, we can test (or destroy) hoses until youre heart is content.

Since I built my own hoses, I tested them to 150% of the value I expect the hoses to see in use.

The interesting issue (for me, anyway) was "Where to stop with the pressure testing?". For instance, if an oil hose might see 100 psi in service, but the hose is rated for 1,000 PSI, do you test to 150 PSI or to 1,000 PSI? Hypothetically, the hose end fitting might hang on just fine to 500 lbs, but might blow off at 501 PSI. Does that really matter to me in my 100 PSI application???