The title is a bit of a misnomer. I didn’t need to assemble the prop hub as I ordered the crankshaft with the prop hub installed. But I did complete the rest of the crank shaft assembly.
I used mineral spirits, as directed in the assembly manual, to clean the crank and I used pipe cleaners to clean the oil passages. I did not clean up the journals at the prop end as bearings had already been installed by Sonex. I was also careful not get get mineral spirits in the front oil passage that runs from the the number two cylinder connecting rod journal to the number three main journal.
I removed the hex plugs in the crankshaft at the end of the four oil passages that connect the #1, #2 and #3 main journals with the four connecting rod journals. Once all the cleaning was complete I installed the 4 hex pugs with blue locktite as directed in the assembly manual.
The final step was to torque the prop hub bolt to 80 ft-lbs. Applying the torque was a bit of a challenge, and I had to strap the crankshaft down to the bench since I did not have anyone to hold it.
Dave's Sonex Builders Log 
You must be logged in to post a comment.