<< Scott Gettings wrote:
 >
 > One local Cozy builder with a 13 B had his exhaust running right out the
hub at the base of the (composite) prop.  He used heat indicators on the
prop, and allegedly never had any high temperature readings even though the
exhaust was in very close.   No reported problems.  Eventually he removed the
13B because of lack of power (burned up seals).  I now have his core, anyway,
even if only for fitting purposes.
 >
 > Scott Gettings >>

Jeff Spitzer wrote:
This is also my experience.  No overheating problems even with exhaust near
root.

My experience also with 100 hours. Get soot deposits but no heat damage.

--
Perry J. Mick
Mick Duckt N7XR
http://www.ductedfan.com

Well lets see, nobody is running real high power so far except Tom Jordan
with his supercharged 13B. Jeff has about 100 HP with his pusher Predator
although I can't be sure about that.
Scott Gettings engine was removed because of low power and now Perry with
I would guess 135 to 150 HP.

Paul Lamar
 
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