Great looks, and quality that holds up. BB makes a very nice yet affordable turbo spinner for your folding props.
Aloft Hobbies carries all spinners in a 4mm shaft size (except as noted). To adjust to a different shaft diameter, we sell individual collets to fit 3mm, 1/8", 4mm, 5mm and 6mm shafts.
Yoke size: 8mm (standard folding prop root width)
Shaft Size: 4mm (addition collets available)
Diameter: As listed above.
Beware that you must install blades with lock tight on both machined screws. They will losen in flight and result in lost blade, sudden unbalance, and extreme vibration that can shatter the motor mount and nose of a composite plane. Also, hollow tip nose piece is only fix with some epoxy. It will also detatch in time. I bought a new turbo prop (because replacement screws not sold) lock tight on screws, new plane, nose piece failure, crash! Again!
Note from Aloft - This is not at all normal. We have flown these for about a decade with no locktight and no failures.