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Holding reed in with gasket cement?

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Holding reed in with gasket cement?

Post  dontrinko on 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
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Re: Holding reed in with gasket cement?

Post  Admin on 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?

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Re: Holding reed in with gasket cement?

Post  dontrinko on 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
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Re: Holding reed in with gasket cement?

Post  Oldenginerod on Wed Oct 14, 2015 3:51 pm

It would be best to tell us which engine. Many here have experience on different brands.
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Re: Holding reed in with gasket cement?

Post  pkrankow on 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
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Re: Holding reed in with gasket cement?

Post  dontrinko on 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
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Update:

Post  dontrinko on 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
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Re: Holding reed in with gasket cement?

Post  pkrankow on Thu Oct 15, 2015 8:37 am

Excellent! Glad you got it working.

Phil
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Re: Holding reed in with gasket cement?

Post  Oldenginerod on 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.
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Re: Holding reed in with gasket cement?

Post  dontrinko on 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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