engine cooling
 

I have a post in the RCV engine area , but thought I would put this up here to get a larger feedback . I'm putting a RCV 120 sp into my Nieuport 28 that I'm building . I'm building a scale looking dummy engine for the cowl and it shrowds the engine a lot .I've done a lot of reading about ducting cooling air over a engine , what works and what doesn't . But , I really don't know how much air needs to flow thru the fins to keep an engine cool . I have an idea to use a fan from a computer and a fiberglass duct work to blow air thru the fins . Last night I got to thinking maybe it would be a better idea to use the fan to pull air thru the ducting instead of trying to force it thru . Does anyone have any thoughts on this that might be helpful ?

Guy.

RE: engine cooling
 

pull the air through using a small ducted fan unit. Computer fans are clumsy and lacking in air pressure difference. They only move air, but cannot force air flow.

RE: engine cooling
 

Why not simply baffle the engine so that the air that comes around the dummy engine is forced from top to bottom and out?  I would only take a bit of plywood, balsa, and perhaps some plastic or fabric to make the baffles.  You should have plenty of air without a fan.  Glow engines just don't generate enough heat to get that fancy.</p>

RE: engine cooling
 

This is the way to do it!

RE: engine cooling
 

What Sport Pilot said in post #3. Be sure there is plenty of opening for the air to exit.

jess

RE: engine cooling
 

Thanks for your thoughts guys . RCV sp engines being what they are and the dummy engine being how it is makes me lean towards a fan . The ducted fan idea sounds like a better idea than a computer fan .

Guy.

RE: engine cooling
 

Most posters seem to forget that this is about an RCV engine. They have a reputation of running VERY hot in their confined packaging space.