Stuka Stunt Main Forum · 15 of 15 known posts recovered
I think some kind ofmaterial to insulate the heat and dampen any vibrations wouldbe in order.
Some lite ply? with a couple of fuel lines cut in hallf?
TIA<
Ion
When the character of a man is not clear to you, look at his friends.
Japanese Proverb
Ion, you need to cool that pipe, so you need airflow over (and under) it. You also need to make sure the airflow from the engine goes out that way in order to draw the cooling air through into the pipe location. Most pipes are attached to a mount and pretty well follow the contour of the wing, although they are a bit of a distance away from it. I would suggest that you open the bottom of the fuselage and simply let that remain exposed. You can then drop the pipe away from the wing a bit that way and everything will be happy. Yes, the pipe will be exposed. Yes, you will be see it when you are flying. But, yes, it will work that way.
See Ya
Peabody
http://www.centralhobbies.com/building_materials/paint/index.htm
Brush on material to protect from heat. Designed for pipe tunnels etc. CHECK IT OUT
Do We really need that? With our carbon fiber pipes we need to keep the air flowing all around the pipe. It shouldn't get close enough to anything to cause a problem. Maybe a speed plane with a closely mounted metal pipe is different. Or a Dynajet? I can't see where we would need it, however.
When the character of a man is not clear to you, look at his friends.
Japanese Proverb
I can see a tank heat problem if you are too close to the tank. It sounds like you don't have enough air passing through the pipe compartment, however. Where does your air exit. Too often people exit the air before it gets to the header and pipe. The engine does OK, but the pipe overheats. Ask Ted to comment about this. As I recall a little tape over the air exit holes in his cowel solved the problem.
When the character of a man is not clear to you, look at his friends.
Japanese Proverb
Bill
His heat problem was not where the header passed over it. his heat problem was where the header was fully touching and digging into the fuel tank... This has not been much of a problem, if you pay attention to air going thru the tunnel with the pipe,header not touching.
Regards
Randy
When the character of a man is not clear to you, look at his friends.
Japanese Proverb
I think that you need to keep it cool to extend the life of the pipe itself.
I do not think that the pipe getting hot will mess up the engine run but I could be wrong.
Anyone else??
a.l.
When the character of a man is not clear to you, look at his friends.
Japanese Proverb
Yes, on the money! Carbon pipes can char if they get too hot and they also tend to carbon up inside. This has been the biggest problem we have noticed. Even though the pipe has not cooked (nor has the paint in the tunnel) there is build up in both the header and the pipe that accumulates and eventually chokes off the power, plus the potential of doing other strange things to the engine. It is good (so we have discovered) to take the assembly off periodically and check and even clean it. As long as you have good cooling it is more of a problem with the header than the pipe, but if the pipe is not cooled, bad things can happen to the pipe.
As mentioned in another response on this thread, ask Ted to respond to this some time (or right now).
