Good news!
The SBP steel offset arm and 226mm cartridge clears the clutch by 1".
On the left side, the pull start was eliminated. The big hole is covered by a 1/4" clear plexiglass plate.
The left-side crank arm barely slides past the plexiglass.
The engine can be shifted slightly for more clearance.
More bad news.
Even tho the right-side steel offset crank arm clears the engine, it's not threaded for a freewheel.
The freewheel is needed to attach the sprocket, which will connect by chain to the Staton gearbox.
Besides, without this crank arm freewheel, the pedals would spin crazily with the engine running.
Good news
I know that all popular freewheels have 1.37 x 24 right-hand thread.
SBP right-side ALUMINUM crank arms are threaded to accept these freewheels, as a part of their popular shift kit.
I also know that many bottom brackets(BB) have exactly the same thread pattern.
Thankfully, the bicycle's left side BB has a removable steel insert with 1.37 x 24 threads.
THAT SAME INSERT CAN EASILY BE WELDED ONTO THE STEEL RIGHT-SIDE CRANK ARM!!
Doing so will allow the standard freewheel and sprocket to attach to the SBP offset crank arm!!
I've never heard of this being done before.
I'm gambling that it DOES allow freewheel and sprocket to work with a steel offset arm.
I'm also gambling that it doesn't break.
The insert wasn't engineered for this purpose.
Then I'll have excellent clearance and not have to modify the BB.
Attachments
Honey, it's just a bicycle. and i REALLY need it to exercise, and to ride it to work.(hehe)