jetstream muffler for OS 1.08  
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jetstream muffler for OS 1.08 - 1/27/2007 5:21:35 PM   
rcdude7


 

Posts: 939
Joined: 4/12/2003
From: Maryland
Status: offline 		Are they available in a configuration to fit this engine? What kind of gain can be expected what size prop would be suitable?

Thanks, Mike
       Post #: 1

RE: jetstream muffler for OS 1.08 - 1/29/2007 1:38:41 PM   
bob27s



Posts: 4637
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		Thanks for writing.

I believe Dub has a configuration for this engine available. It includes a bolt-on adapter and the Jett-Stream 120 size muffler.

Would install something like this (ST2300 installation)

The Turbo-Jett is available too.

As for performance gain, on the larger engines you will not see a huge RPM gain as you do with a 40 or 60 size engine. But a small rpm increase with a 16" prop equates to a big increase in HP.

The key here is propping the engine for the rpm required for the muffler to perform best. You want to target appx 11-12,000 rpm with your prop selection. Typically something like a 15x6 will see about a 400-600 rpm increase.

Tell me a bit about your application - sometimes that helps with the selection process

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< Message edited by bob27s -- 1/29/2007 1:40:44 PM >


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Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to rcdude7)
       Post #: 2

RE: jetstream muffler for OS 1.08 - 1/30/2007 5:12:20 PM   
rcdude7


 

Posts: 939
Joined: 4/12/2003
From: Maryland
Status: offline
Hello Bob,
I recently bought the engine new and without a muffler, I guess some of them came without from O.S.
I don't have a airframe yet for this engine, but something fairly fast is what I'd want to mount it in. That mustang you have pictured would be ideal. Is that a Kit or ARF? Is it a WM midget mustang?

Thanks, Mike

(in reply to bob27s)
       Post #: 3

RE: jetstream muffler for OS 1.08 - 1/30/2007 9:04:28 PM   
bob27s



Posts: 4637
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		Might be a cousin of the WM mustang - it is a "60" size ARF that was available on ebay for a while.

As I understand, it is fairly quick as it is setup - but not blazing fast.

However, you are correct - something like this with a 108, a 13x10 prop and a good setup might move along quite nicely.


_____________________________

Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to rcdude7)
       Post #: 4

RE: jetstream muffler for OS 1.08 - 2/4/2007 6:36:55 AM   
rcdude7


 

Posts: 939
Joined: 4/12/2003
From: Maryland
Status: offline 		I just picked up one of those .60 P-51 voodoo mustangs on ebay for $63 + shipping. They are still available! I will mount the 1.08 in it if it does'nt cause a fwd CG problem. I would love to buy a Jett engine for this plane, just can't swing the $$ at the moment

Mike

< Message edited by rcdude7 -- 2/4/2007 6:39:24 AM >

(in reply to bob27s)
       Post #: 5

RE: jetstream muffler for OS 1.08 - 2/5/2007 3:08:16 PM   
bob27s



Posts: 4637
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		The Jett 90 or 100L is probably overkill for this bird anyway......

That ST2300 setup shown there seemed to work fairly well. I know of two folks flying the mustang with ST90 power too. With the rebates and discounts from Tower (or the local hobby shop) those are two very cost-effective engines - even if you add on the exhaust system.


_____________________________

Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to rcdude7)
       Post #: 6

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