Mods, feel free to move this to the right section, wasn't sure where to put it.
New Titan IO-370 from Aerosport Power (2 hours of engine run-in before it left the factory). New Whirlwind 300 CS prop. New PCU5000 governor. New Saber 2.5" CS adapter.
We've done our first few engine runs on the ground and everything looks good so far except that the prop won't cycle. I've got a total of 4 engine runs on it (short runs to keep the CHTs down on the ground). Today we had 180-200 degree oil, 90psi @2000 rpm and I've probably done 2 dozen cycles on it. It's probably 15 or so 3 counts where I pull the prop back and then cycle it forward, and then 5-10 longer cycles where I leave the prop back for 10-15 seconds before pushing it back forward. All total, there's probably over a minute of the prop pulled all the way back at 2000rpm.
There's zero rpm change so far. The blades appear to be slightly more coarse now after shutdown then when I first started, but something isn't right. During the longer cycles, manifold pressure will increase by about 1" when I pull the prop back and it will drop when I push it forward, but there's no RPM change.
Looking for next steps. Do I try it again at 2200 rpm? Do I just leave the prop all the way back until it does something? I installed the gasket so the screen was matched up to the recess in the governor body, but maybe I put the whole thing on upside down? It was clocked dam close to where it should have sat from the factory, governor spec sheet attached. Planning on calling aerosport, whirlwind and APS tomorrow but thought I would get your guys' ideas as well. Thanks.
New Titan IO-370 from Aerosport Power (2 hours of engine run-in before it left the factory). New Whirlwind 300 CS prop. New PCU5000 governor. New Saber 2.5" CS adapter.
We've done our first few engine runs on the ground and everything looks good so far except that the prop won't cycle. I've got a total of 4 engine runs on it (short runs to keep the CHTs down on the ground). Today we had 180-200 degree oil, 90psi @2000 rpm and I've probably done 2 dozen cycles on it. It's probably 15 or so 3 counts where I pull the prop back and then cycle it forward, and then 5-10 longer cycles where I leave the prop back for 10-15 seconds before pushing it back forward. All total, there's probably over a minute of the prop pulled all the way back at 2000rpm.
There's zero rpm change so far. The blades appear to be slightly more coarse now after shutdown then when I first started, but something isn't right. During the longer cycles, manifold pressure will increase by about 1" when I pull the prop back and it will drop when I push it forward, but there's no RPM change.
Looking for next steps. Do I try it again at 2200 rpm? Do I just leave the prop all the way back until it does something? I installed the gasket so the screen was matched up to the recess in the governor body, but maybe I put the whole thing on upside down? It was clocked dam close to where it should have sat from the factory, governor spec sheet attached. Planning on calling aerosport, whirlwind and APS tomorrow but thought I would get your guys' ideas as well. Thanks.
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