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Post by oahupilot on Aug 1, 2011 7:53:32 GMT -5
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Post by n3480h on Aug 1, 2011 16:57:11 GMT -5
Nice work, oahupilot. Post treating the baffles was a good idea. Bet they are pretty light and very strong with all the compound curvature.
Tom
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Post by Schmleff on Aug 1, 2011 17:12:14 GMT -5
FWIW, I used West Systems epoxy on my original glass baffles and my "cool glasses" without any issues. They post cured in place  |
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Post by oahupilot on Aug 2, 2011 1:49:56 GMT -5
I thought about using epoxy but its glass transition temp is much lower then vinyl ester, and I was unsure it would tolerate the heat from the exhaust pipe. Granted the baffles are constantly being cooled by the incoming air so it will be interesting to see the temp on the actual baffle itself around the exhaust pipe. I am very confident that I built in a large margin of safety. The exhaust pipes have been professionally coated with a baked on ceramic compound to help manage the heat.
I also used the vinly ester resin because its cheaper then epoxy, fuel safe, and I had a lot left over from carbon intake system I was working on for another project.
Next on the list for my plane is carbon filter/carb heat box and intake system. Carbon landing gear will follow once I get the motor turning again. I also need to replace my tail surfaces later down the road for a major airframe revision I am planing
Also I have been working on an adriod based tablet efis/eis that should shed all of the heavy gauges.
The goal is to get sub 550 pounds on my plane
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Post by schrome on Aug 2, 2011 11:27:17 GMT -5
Very nice, Oahupilot. I wish my composite work looked as good.
My new intake manifold (glass + VER) passes about a half inch away from the number two exhaust pipe. There is an aluminum heat shield between the two but I'll run it for a while on the ground before flying it.
Ed
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Post by oahupilot on Aug 10, 2011 4:03:07 GMT -5
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Post by n3480h on Aug 10, 2011 4:42:57 GMT -5
Wow, very nice!
Tom
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Post by oahupilot on Aug 12, 2011 5:31:17 GMT -5
good news the motor came on and nothing caught fire!
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Post by o2koold on Aug 12, 2011 18:38:10 GMT -5
Not catching fire is always a good thing! How did the battery do spinning the engine? And, what size/compression ratio is the engine? I just received the same battery yesterday. I could not get over how small and light it was for a 18amp hr. I was able to set up my flight gauge, and will try and set up my engine monitor and EFI ECU this weekend, now that I have 12v to play with.
Scott
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Post by oahupilot on Aug 13, 2011 13:14:40 GMT -5
the little battery spins my 2180 8:1motor just fine. cht temps don't seem to climb more then 275 to 300 during ground runs.
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