Thread: wheel aero,s?
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Old 12-30-2015, 03:59 PM   #1 (permalink)
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Join Date: Sep 2015
Location: manchester, england
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anorexic - '73 norton commando caferacer
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wheel aero,s?

hi, to all, anybody had experience with wheel shields, ie, 2x disc,s making shallow cones to cover each hub and rim. grommet to access air valve, alloy sheets rivetted at the 2x edges, the top edge facing away from direction of airflow.
many thanks for any replies.
ps still working, on a modified constant velocity su carb for my motorcycle, have managed to source spare su carb, so will machine up reduced bore inlet venturi, and make a 3 to 4" long velocity trumpet at 12degree flow, plus put in a rolled leading edge, on the ram pipe , to reduce brakeup of laminer flow and increase gas speed, for torque and cfm. dave vizzard got a6% increase in cfm using these measurements hopefully i can hit 85mpg regular, at 55/60mph the mpg goes into 3figures mpg!!!,but air drag has a major effect, as i have marks on the throttle.

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