ORIGINAL: Richard L.
ORIGINAL: mstroh3961
the ignition box is mounted to the fierwall or engine box, electronic igniton uses a seperate battery pack
I'm about to step into gas myself. I have seen a couple of ignition modules mounted on the engine box ahead of the firewall. If mounted this way, won't engine heat affect the functionality and longevity of the ignition module?
Richard L.
As I answered in another thread, I have had no ploblem so far since I made an air
exit hole in the cowl of my P-47. I flew it yesterday and had no problem, too.
P-47's cowl has enough air inlet for engine cooling( and ignition module in my case).
However, I don't know how the heat affects the longevity of the ignition module yet.
One defference about heat I noticed is that gas engines need more cooling measures
for itself than glow engines.
My buddy flew H9 P-51 150 with RORO35 and the engine stopped every time after
several minutes flight. He installs the ignition module after the firewall.
The airplane has a small air intake in front as P-51 and almost no air outlet except
muffler cutouts.
We suggested him to fly it without the cowling and then the engine run very well
all the flight.
I realized that gas engines tend to overheat more than glow. Or overheat affects
gas carb easily than glow carb.
The temperature on the ground was 25deg. Celcius.
Tsutomu Mabuchi