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Rear Exhaust Engines

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Old 08-02-2004, 10:59 PM
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weskel
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Default Rear Exhaust Engines

Who makes rear exhaust aircraft engines and in what size do they come?



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Old 08-03-2004, 12:07 AM
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Default RE: Rear Exhaust Engines

Kelly,


MVVS makes all its standard 2.5-15 cc (.15-.91) engines convertible to rear exhaust, before they are first run. The cylinder is held to the crankcase, with 4 bolts that can be removed, so it could be turned, for the exhaust to face to the rear.

If you run your MVVS engine, even for a minute, in one configuration, you cannot rotate it without replacing the piston and sleeve set.
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Old 08-03-2004, 10:25 PM
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Default RE: Rear Exhaust Engines

Rear exhaust engines come in all sizes from .15 through 1.40. K&B, Rossi, Picco, O.S., Webra, MVVS, Jett, etc., all produce engines in this configuration in various sizes. I have in my drawr or closet an O.S. .25 and .40 as well as a YS .60, all of which are rear exhaust.

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Old 08-03-2004, 11:10 PM
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Default RE: Rear Exhaust Engines

John,

Picco rear-exhaust aircraft engines are either not in production, or are very limited and very expensive.

K&B only have, on the [link=http://www.mecoa.com/kb/aero_engines.htm]Mecoa web site[/link] only the 1.00 as an aircraft engine. The rest are ducted fan models.

Rossi has reduced its aero-engine choice to 2-4 models, according to the [link=http://www.justengines.unseen.org/]JustEngines site[/link].

OS and Webra are in general more expensive than their side exhaust counterparts.

Jetts are very powerful and very expensive and obviously suitable for 'professional' modelers and not for kids with trainers, or for 'Sunday fliers'.

YS are now very limited in two-stroke selection and are quite expensive.

That leaves MVVS.
There is no extra cost involved (except the $10-$12 headers) and if you stray from the American representatives, you will see prices in the normal OS range.
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Old 08-03-2004, 11:51 PM
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Default RE: Rear Exhaust Engines

Dar,
Weskel asked who makes rear exhaust engines and in what sizes. He did not ask for the one and only you felt was the sole acceptable item available. He did not state his needs nor budget. For all any of us know, he has a huge wad of cash that's burning a whole in his pocket to put down on the most powerful engine he can find. Let's not discount all of the alternatives save the one YOU prefer when you have no idea what he has in mind or his experience level.

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Old 08-04-2004, 09:49 AM
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Default RE: Rear Exhaust Engines

Not forgetting the Stalker range with their 40, 51, 55 and 61 rear exhaust and VERY lightweight engines. My 61 weighs 13.5 ounces with muffler but now they have a lightweight version
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