[NSRCA-discussion] Cooling outrunners

[Bob Richards]

Is there any reason why you can't duct the air to blow into the rear of the motor, and provide a way for it to escape from the front?
   
  Geez, I'm just thinking that leaving the spinner off, or use a really small spinner, would be the way to go.
   
  Bob R.
  

Chad Northeast <chad at f3acanada.org> wrote:
  The problem with a lot of composite fuse models (Twister included) is 
that the inlets in the chin and cheeks are often right at the rear or 
even behind an outrunner.....so ducting toward them is very difficult. 
I have to agree that a proper ducting system is crucial for cooling. I 
use a very simple short radius 90 bend in a peice of depron that pulls 
air in from the chin, I see about a 20C rise in temp without it, other 
than that I dont really do anything special. The motor will operate at 
up to 170F without complaining so as long as its 20-30F below that all 
is good :)

Chad

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