Crank shaft assembly

[Rynoth]

Just tried to do my prop hub... crank was in the freezer for 2 days and heated the hub in 525 degree oven for 2 full hours. I had the hub moved from the hot oven to the crank in about 3 seconds. Could only get the hub on halfway using wood block and a mallet. Time to find a press.

[Gripdana]

That is exactly how I did it the first time. Had the same results. The second time I put it in the oven and did chores around the house, then went out for dinner and a movie. I didn't even need the block of wood and hammer. It just went on with a light palm hit. Everyone who said the more heat the better are right on the mark! It went on so fast my wife didn't even know I was doing it in her kitchen (she was watching tv with the kids in the other room).

[Rynoth]

I was able to press off my hub, and upon inspection I believe I discovered the culprit. In both the Aerovee assembly video and the picture in the manual, it appears that the forward Woodruff key is to be inserted with the curved side down. However there was clearly interference between the hub and the key when inserted this way (I think they have changed the key but not updated the pics.)

I'll insert the key curved side up this time and try it again.

[Gripdana]

Even so I would let it soak in the oven for at least 3 or more hours.

[grevaly]

Ryan,
My engine is a 2.0 version and I am the second owner, and bought the engine unassembled.
In my application the curved rounded edge of the key faced up toward the prop hub if you looked
at the keyway in the hub it was not a square cut but rounded as well to mate to the key. if you look
into the hub keyway that should help confirm the oriontation of the key.
When mine went on and stuck I dont think I was hot enough and I had trouble aligning the keyway.
Dana is right the longer you heat the more insurance you will have to work with.