CS Prop line

[Radomir]

Considering that the SS line is about $114, a hose would be something worth exploring

[frankh]

Dang...I bet the hydraulics shoppe would be about $20 all in.

Wish I'd known this before I bought my oil cooler lines from Vans...

Frank
7a ...30.7 hours

[Joey]

Originally Posted by RV8N

I'm afraid I disagree. The hose is a viable option. Your looking at about 60-80 psi of oil.

No, you're looking at 200-300 psi.

Don't skimp on this line. It isn't the place to save money.

[airguy]

It's my understanding that the prop governor takes engine oil pressure and boosts it somewhere in the range of 400-900 (I've heard several different values from different people) to send to the prop, is that correct?

I work with compressed gases at pressures to 10,000 psi regularly, I have many varieties of stainless braid and Kevlar braid lines rated for pressures up to 6000, what kind of flow rates are we talking about here? What is the diameter of the rigid stainless line?

And before we get into it, yes I know I would need a different internal tubing material for oil versus air line - got that covered. I've also got the capability of bending my own rigid stainless in 1/4" and 3/8" if needed.

[frankh]

I have not checked the pressure rating of the Hydraulic shoppe teflon lines but I bet its way up there, considering that most hydraulic hoses operate in the 3000psi range.

Good point to check before you use it though.

Frank

[Joey]

Originally Posted by airguy

It's my understanding that the prop governor takes engine oil pressure and boosts it somewhere in the range of 400-900 (I've heard several different values from different people) to send to the prop, is that correct?

Yes, the propeller governor contains an oil pump to boost the pressure to what is required to actuate the propeller. My manual lists 180-300 psi as being common. I personally have worked with systems that put out nearly 400 psi, usually only on aircraft with reversing propellers.