Forgot to reply to the last question. The mast is only made of 1/4 sheet balsa with 3/32 light ply on either side for ridgidity. Not exactly great SPAD material....but I feel it's the best and quickest material for the job. Nothing fancy here. The hub shaft is machined from aluminum and press fitted to the inner ID of the bearing (1/4 ID x 5/8 OD).


Splinter.