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Reed valve

Material in reed valve

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Derek Stevenson04/01/2017 13:53:59
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222 forum posts
4 photos

I have a broken reed valve in my RCGF 15CC Petrol engine. Can anyone advise what it is made off? It loos like a fiberglass material, thin and very springy! I gried a chainsaw repair shop this morning and he never saw one like it before. I would like to get the enginge going again asap. Thanks

Martin Whybrow04/01/2017 20:43:22
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832 forum posts
33 photos

Try a bike spares place, particularly one dealing with 2 stroke motocross type bikes; when I was kart racing, some of us used to use fibreglass reeds in our kart engines (more forgiving when they break, metal ones tended to wreck the bore if ingested). They are the same material as fibreglass PCBs, just a lot thinner.

Martin Harris04/01/2017 21:15:11
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6642 forum posts
160 photos

Mick Reeves does some thin fibreglass sheet - Proskin - in various thicknesses...he might let you have a small sample if one of the thicknesses is suitable?

If you could measure it I have some in one of the sizes - we might be lucky?

Derek Stevenson05/01/2017 17:06:31
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222 forum posts
4 photos

Martin appreciate the reply its 2.5cm x 1.5cm unfortunately I don't have a micrometer to measue the thickness.

(That Thanks is to both Martin's)

Derek

Derek Stevenson05/01/2017 17:06:33
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222 forum posts
4 photos

M

Edited By Derek Stevenson on 05/01/2017 17:08:17

Martin Harris06/01/2017 10:15:09
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6642 forum posts
160 photos

PM sent, Derek.

Cuban806/01/2017 11:18:42
1373 forum posts
1 photos

Perhaps these people might be able to help? **LINK**

Might be able to adapt something they stock.

Edited By Cuban8 on 06/01/2017 11:20:08

Derek Stevenson06/01/2017 19:43:25
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222 forum posts
4 photos

Thanks Martin

Derek Stevenson11/01/2017 16:44:33
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222 forum posts
4 photos

Martin used the proskin and hi presto the engine started. I only run it for a few seconds as I was inside my "den" and the fumes are not good! As it is freezing here with a high wind Ill do a full run later.

Your help is really appreciated may all your landings be gentle.

Martin Harris11/01/2017 18:12:20
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6642 forum posts
160 photos

Thanks - let's hope it's at least as durable as the original!

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