How many pennies are these there extended prop drives .
Need on for a .46 ST , so'd replace prop driver & increase stock length 3/4 or 1 inch , to Brodack 1 3/4 spinner .
unless we go a little more technical , with a 1 7/8 prop cover washer with uncut 1 3/4 forward , for now .
as a freewheel contra prop in front'd need a few more bits . and WEIGH MORE , which is likely unacceptable .
1 " would get the motor further back , so is preferable, thanks .