Desert Rat
Well Known Member
Hey guys- In preparation for fitting up the cowl, I started looking through the whirlwind prop documents.
They state that for the 4 long drive lugs on the prop flange you need .180-.20 engagement. Mine only stick out 3/8" from the face of the crank so when you stick a .25 thick flywheel on there it's only going to be about .125 engagement.
I'm going to call WW and see if what I'm reading is correct, but I'm also curious if perhaps my engine shipped with the wrong drive lugs in it.
for those of you with whirlwind props did you have this issue or just bolt it on and go or what?
Also, if anybody is close to their IO390 engine without a prop on it yet, I'd be curious what the height of the 4 long drive lugs is on yours.
They state that for the 4 long drive lugs on the prop flange you need .180-.20 engagement. Mine only stick out 3/8" from the face of the crank so when you stick a .25 thick flywheel on there it's only going to be about .125 engagement.
I'm going to call WW and see if what I'm reading is correct, but I'm also curious if perhaps my engine shipped with the wrong drive lugs in it.
for those of you with whirlwind props did you have this issue or just bolt it on and go or what?
Also, if anybody is close to their IO390 engine without a prop on it yet, I'd be curious what the height of the 4 long drive lugs is on yours.
