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Old 09-13-2010 | 08:54 PM
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AirTech
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From: Peru, IN
Default RE: RedWing MX2 Build

Hey Tim somehow you pasted the address for my tread post, so the link takes you back to the same place. Anyway I appreciate the intention the video will make the build so much easier, please re-send it once more.

This evening I had a chance to work a couple of hours and was able to finish the engine installation and most of the cowl air breathing holes. I am pleased with the cowl appearance but I am planning on closing the scale front air vents to allow better air flow around the engine cylinder. This subject is a point of contention with some builders. My opinion is based on the fact that air likes the easier path around any object it encounters and those big scale holes are irresistible. Most large scale gas powered models need baffling to achieve good air flow and cooling over their cylinders. If you pay attention and specially in large radial cowled models they have a large plate or dummy cylinders with only a small opening in front of the cylinder. The important point is to provide an exhaust hole approximately three times the size of the area of the intake. That way the exhaust air will actually vacuum the air from the cowl inside therefore increasing air flow speed through the smaller intake opening..

Tomorrow I am going flying early in the morning and may be able to do some more work in the afternoon.

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