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Miller CAP 21

exhaust problem, can you help?

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Alan Dorrell11/08/2008 10:47:00
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214 forum posts
173 photos
I have been building Peter Miller's CAP 21 from the plan and article in this issue. I have just been fitting the motor, an SC32 like Peter has used and although I thought I had read the article thoroughly, I had missed the bit where he says a manifold extension to the silencer is needed to clear the silencer in this canted position. I have looked up the parts lists on J. Perkins website but find no mention of such an article. Is one commercially available or did Peter have one specially made? Could you or Peter solve this conundrum for me please. I have returned to aeromodelling after a gap of 30 years. I used to fly Stunt but wish to master R/C while I'm still able.
Bob Cotsford11/08/2008 11:58:00
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8380 forum posts
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try looking for an OS or ASP one, they certainly do them for larger engines.  Or try Just Engines, they are usually very helpful. 
Jim Carss12/08/2008 20:50:00
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2095 forum posts
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Alan,

As Bob says  Just Engines is the place for your silencer spacer.

Look under Accessories and then exhaust accessories and you will find them there priced at £8-99 for the 35mm spacer.

I built the Cap 21 a while back and it goes like stink on SC 32.

Jim

M Eastelow19/08/2008 20:41:00
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I Built the CAP 21 last year powered by an OS46LA. A bit overpowered for a rookie like me but good fun while it lasted. See it here Cap 21

Mike E

Peter Miller26/01/2009 18:51:56
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Just engines supplied my extension, it is an OS item
Peter Miller27/01/2009 08:41:44
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For other builders who have not got that far. just change the angle of the engine so the silencer clears the side of the model

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