Holding reed in with gasket cement?

dontrinko Wed Oct 14, 2015 2:59 pm

I have an engine that has the reed valve missing. (049 of other brand) I made a reed from Mylar. Works fine by blowing/sucking. I put a dab of gasket cement on the ends to hold it in permanent.
Anyone try this? Seems like it should work. Don

**Admin** Wed Oct 14, 2015 3:28 pm

Well... the reed is supposed to be able to move freely and spin. Are you missing the reed retainer? Have you tried it in an engine yet?

dontrinko Wed Oct 14, 2015 3:41 pm

I have not tried yet. The reed got sucked into the engine but no sign of the retainer. I tried to make a retainer but it held the reed to tight. Don

Oldenginerod Wed Oct 14, 2015 3:51 pm

It would be best to tell us which engine. Many here have experience on different brands.

pkrankow Wed Oct 14, 2015 3:56 pm

Got pictures?

Some engines use a reed that is fixed solid at one end and flex in a cantilever manner. Usually there is a heavier retainer that prevents the reed from flexing too much.

Functioning in a static manner is quite different from 10,000 times a minute or more.

Phil

dontrinko Wed Oct 14, 2015 4:34 pm

It is a Testers 049. I made a retainer from music wire. I have no faith in it working. Yes! 10000 rpm is diferent. Don

dontrinko Thu Oct 15, 2015 8:31 am

Found original reed and reinstalled. Used music wire for retainer. (no gasket cement)
Ran one tank full thru successfully. Don

pkrankow Thu Oct 15, 2015 8:37 am

Excellent! Glad you got it working.

Phil

Oldenginerod Thu Oct 15, 2015 4:14 pm

Some Testors engines had a wire clip like earlier Cox engines and some has a clip-on plastic retailer like the later Cox. I don't think either of them are interchangeable. It's not hard to pick up a Testors "pipe bomb" engine with the small "fly-em" tank for a couple of $ and use it as a source of parts.

dontrinko Fri Oct 16, 2015 3:28 pm

Thanks; I have 2 Tester but they are different.(tank part mostly) I pick up cheap engines on ebay and get them working. (most of the time) Don

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Holding reed in with gasket cement?

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