Over engineered.......

hahah ill say.
good job

 

Crankshaft pulley bolts the world over are quivering in fear about now

 

OMG !  Graeme;  just put a bit of a bend in each end of it, & leave it on there, & you'll get a bit more airflow through that radiator !

P.S.  Could also be of assistance when driving through "long grass" out Buccan way.

Cheers Banjo

Add a variable pitch hub and it might just lift off

Or provide more thrust than the 4k by itself ever did. 

Ha ha nice build ,will we see them at auto stores soon!!!

nice work rob

Just want to give a thanks for showing us your contraption, you gave me some inspiration to make my own 
Worked great.