Adapting a shaft-drive swingarm for chain

Re my Dnepr project, where I plan to install a chain-drive motor.

One of my requirements is that no permanent or irreversible
changes are made to the bike (so that it could be restored
to its present condition).

The current swingarm is set up for shaft drive, so it doesn't
have chain tension adjusting slots. However, I have a left over
swingarm from the crashed Triumph Thruxton which does.

So one plan would be to fire up the angle grinder and cut off
the tail ends of the Thruxton's swingarm to act as adapters.
Then bolt them to the Dnepr's swingarm, which already has
two built-in mounting points: a reinforced hole for the axle
and another for the lower end of the rear shock, which is
3 1/2" forward of the axle.

Will this work I wonder. The chain is under a lot of tension
under acceleration, meaning that the swingarm is under a lot
of compression. As well as some torsion due to the offset
from the axle to the sprocket teeth.

Too much force could either bend the Dnepr's swingarm
(which was designed to withstand a different set of forces)
or rip the adapters out of their mounting hardware.
Can they be made strong enough?

Realistic opinions appreciated.

SQ

 

Can't visualize that... the distance between sprocket teeth and axle
makes no difference.

The shaft drive put bending forces on the swingarm, just like a disk
brake caliper, or drum backing plate anchor, would. The chain drive
conversion will remove those bending forces.

Move the engine fore/aft to adjust chain tension.

 

Find a different swing arm the same size, one that is from a
motorcycle made for a chain. Why change a shaft drive swing arm?