This is my kind of build!  I’m replied to Roy asking for a bit more info on the build.  It might not jump out at first glance but there is a LOT of love in this little bike.  That kind of HP out of a Bantam is impressive.

Hi. I was just checking out the Arrow racer on your site. Here is my BSA Bantam with an arrow engine which is kicking out 22bhp at 8000 rpm. I’m just in the process of going for 30bhp at 10000 rpm. She is a twin carb, crankcase reed valve induction, etc etc.
Roy