ORIGINAL: I-Love-Jets
Graupner Speed Prop series (white labelling)
Black coloured with very elaborated aerodynamic design and with 8 mm diameter hub bore. If you don't want to make your own carbon fiber speed props these Graupner speed props are highly recommended to use with IC speed engines up to 3.5 cc running over 30.000 rpm - they wont break! [sm=thumbup.gif] They can be shortened and re-balanced easily. These speed props require an aluminium bushing to match the crankshaft diameter for proper centering..
Thanks for the info - those are the props I was asking about. I shall go ahead and run mine on the OPS .15 then! I will use bushings of course.
MJD