So the long and the short here isnthat i ate up shift forks,dog rings and the first three gears in my bike. It slips under moderate to heavy load. I have seen this happen in a few other six speeds. My question is regarding the Jims kit? Is it the answer? I have replaced one with a dd7 and that has held up. My bike made it 4k on the new motor setup. All bikes that i have seen failures in have been 120+ hp and tq

 

I may be a little bias but I personally like ours:

http://bakerdrivetrain.com/street-door

The whole reason for our redesign was that using snap rings to retain the bearings does not work. We use a steel plate bolted directly to the door.

 

Just curious how do you know when your trap door is gone bad?

 

Not really a matter of it going bad it's just a bad design. When using helical cut gears( which all Harleys do now) it produces a condition known as axial thrust where the main shaft and counter shaft actually push away from each other.The main shaft then pushes on the door bearing and the snap ring holding the bearing cannot hold it in place. So now you have a mainshaft that moves in and out as torque increases/decreases. Put the bike in 2nd/3rd gear hold the clutch lever half way in you will feel it move in your hand, that's the mainshaft moving.