Help with motor sprocket nut removal

[gearsmithy]

What size is that nut? Do you guys think a breaker bar could do it?

a breaker bar can work, with a torch, a 4-foot lead pipe, and a couple of fat friends.

 

[Moespeeds]

Just a bit of advice as I just went through all this. When you put that nut back on, clean it really well, put a little anti seize on it and the crank threads, and run it all the way down with the gun without the sprocket or pulley on there, basically you want to clean up the threads. Then take it back off, clean off all the antisieze, and assemble everything normally. I thought I had mine on tight, but a glob of locktite was causing my impact gun to max out before everything was fully tight. It all FELT tight, but my pulley nut came loose twice in 3 days, eating 2 stators and nearly fucking up my timkin (whole crank, flywheel, etc, slid to the right side of the bike!). Once everything is together, make sure there is no lateral slop in the pulley or sprocket!

Check this thread:

http://www.bigdogbiker.com/forums/technical/4697-7-16-spline-enough-hold-front-pulley.html