ORIGINAL: nedim
ORIGINAL: shannah
Hi Kevin,
The fan backplate is actually the spinner backplate. You can see a picture of it on one of the earlier posts. The ''spokes'' of the backplate are actually machined to act as a fan blade and help to pull air through the openings in the spinner and onto the motor. I would think that would really help Outrunner cooling.
Believe me this backplate idea does not work. We tried it a couple years ago and it didn't work at all.
I used to work for a major military electronics company for about 12 years as a design engineer and assistant mechanical manufacturing manager. We had a product (a proximity fuse) that generated power with a fan in a spinner like cone. So, we got the idea from this. Yes, it works with mach speed but certainly not with sub sonic at the lower end.
Sorry to disapoint you guys
Nedim
My rides not here yet and I almost forgot to mention this. The motor, Motor batt and controller were all luke warm after consecutive back to back flights. No inlets at all except through the spinner and only exhausting out the ducts in the tail. I do have two little slots in the chin but no deflector plate. They are there because the speed controller is mounted in the chin and would have no way to get any air.
It was only 90-95 today but I feel confident we have a cooling system that does work extremely well
C