I have the following on my RV-10, all bought new from Vans.
YIO-540 D4A5
MT 3 blade prop
Hartzell Governor
The prop isn't moving at all - it just stays on full fine.
- I have checked the bungs in the engine, and sent photos to local experts who have agreed it's all correct. Front bung removed, back bung in place.
- I have tested the prop with compressed air. About 75psi got it moving, and a bunch of oil squirted in my face. Once all the oil had cleared and i'd exercised it a few times, it was starting to struggle to hold the pressure - it was leaking out as fast as it was going in, and holding about 75psi.
- I've checked the governor is being driven (it is) and that the flyweights and things are not stuck inside, its all smooth as silk. I've also checked the pressure relief valve, and it all looks good.
-Both the prop and the governor are full of oil
-I've checked the lever on the governor moves fully from stop to stop, it does.
-I've run the engine for nearly 1 hour in total now, at many different RPM settings including 2700. I've exercised the lever many, many times. I've tried leaving it course, and leaving it fine, for several minutes.
I'm now desparate for ideas.
- I spoke to MT who after asking lots of questions and reviewing photos blame the govenor. They say that 75-80 psi is correct for it to start moving.
- I spoke to Hartzell who have confirmed everything looks in order, and have suggested i ship it off to a prop shop for testing. They said it's extremely unlikely there's a problem with it.
What else could the problem be? Help!!
YIO-540 D4A5
MT 3 blade prop
Hartzell Governor
The prop isn't moving at all - it just stays on full fine.
- I have checked the bungs in the engine, and sent photos to local experts who have agreed it's all correct. Front bung removed, back bung in place.
- I have tested the prop with compressed air. About 75psi got it moving, and a bunch of oil squirted in my face. Once all the oil had cleared and i'd exercised it a few times, it was starting to struggle to hold the pressure - it was leaking out as fast as it was going in, and holding about 75psi.
- I've checked the governor is being driven (it is) and that the flyweights and things are not stuck inside, its all smooth as silk. I've also checked the pressure relief valve, and it all looks good.
-Both the prop and the governor are full of oil
-I've checked the lever on the governor moves fully from stop to stop, it does.
-I've run the engine for nearly 1 hour in total now, at many different RPM settings including 2700. I've exercised the lever many, many times. I've tried leaving it course, and leaving it fine, for several minutes.
I'm now desparate for ideas.
- I spoke to MT who after asking lots of questions and reviewing photos blame the govenor. They say that 75-80 psi is correct for it to start moving.
- I spoke to Hartzell who have confirmed everything looks in order, and have suggested i ship it off to a prop shop for testing. They said it's extremely unlikely there's a problem with it.
What else could the problem be? Help!!