Anybody with RS4 intercoolers ever think about drilling some holes....
07-07-2006, 04:01 PM
#13
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I think you want to make a change of scale close to what you'd be doing
if you were to cut the wheel well liner. Completely removing the liner is well beyond cutting some holes. I don't think the results of removing the liner would correlate very well with making some additional small holes. No harm in trying it out though just to see what happens.
07-07-2006, 04:14 PM
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Thinking out loud-How about trying to suck out some of the air more effectively? On many...(long)
aircraft we face a similar situation. We force air in through the cowl for engine cooling but getting it out is a little tougher.
Some have used NACA ducts in reverse as suction but I cannot see this working in the IC situation, but for the aircraft cleaning up the exit really helps in the cooling and as importantly it helps our speed. There is a ton of drag up in the cowling.
On the aircraft that I am building many also use a plenum set up for cooling and to increase speed/cooling. Smaller cowling inlet holes, more efficient cooling, and increased speed. I am sure with a lot of work something like this could be done with the IC's.
OK- sorry for thinking out loud.
Attached is a link to a photo of the smaller inlet holes on a similar aircraft to mine<ul><li><a href="http://www.jamesaircraft.com/rv6.jpg">photo of smaller inlets</a></li></ul>
Some have used NACA ducts in reverse as suction but I cannot see this working in the IC situation, but for the aircraft cleaning up the exit really helps in the cooling and as importantly it helps our speed. There is a ton of drag up in the cowling.
On the aircraft that I am building many also use a plenum set up for cooling and to increase speed/cooling. Smaller cowling inlet holes, more efficient cooling, and increased speed. I am sure with a lot of work something like this could be done with the IC's.
OK- sorry for thinking out loud.
Attached is a link to a photo of the smaller inlet holes on a similar aircraft to mine<ul><li><a href="http://www.jamesaircraft.com/rv6.jpg">photo of smaller inlets</a></li></ul>
07-07-2006, 04:33 PM
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That's essentially what the original post was asking about doing. Lowering the
ambient pressure on the back side of the IC so that the air flows through more easily. I think the idea is sound, but in practice I don't know if there's an easy way to realize meaningful gains.
07-07-2006, 06:34 PM
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Yea- I know and you are most likely correct about holes not doing it. I am guessing by your user...
name that you too fly and know just what I am talking about. If we wanted to get really fancy and take a lot of time I am sure that someone could come up with a really slick set up.
But I don't know if the time to benefit equation is worth it.
But I don't know if the time to benefit equation is worth it.