countersinking for a duplex chain

[philthehill]

A couple of pictures for Nettie.

Front engine plate countersink 6.jpg (52.84 KiB) Viewed 277 times

Front engine plate countersink 7.jpg (73.03 KiB) Viewed 277 times

The plate was countersunk off the engine but can be done fitted. Use a vacuum cleaner to remove the swarf whilst countersinking.
The countersink being used is the correct 82 degrees for UNF screws but a 90 degree will suffice. Loctite the screws in place.
When fitting the duplex gears make sure that the teeth are aligned using the shims between the crank sprocket and crank shoulder.
This is the correct BMC spanner but a deep impact socket or heavy duty ring spanner will suffice.

Crankshaft bolt spanner 1.jpg (71.58 KiB) Viewed 274 times

[NETTIE]

Thank you Phil really appreciate that