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Advice needed on .25 airframe match please

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Advice needed on .25 airframe match please

Old 12-12-2007, 09:30 PM
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Default Advice needed on .25 airframe match please

I bought a great OS .25 FP engine at my club's auction and now I need a fun airframe to match.

I want something similar to a Kaos! Does anyone make one to sell?

Any suggestions will be helpful

Philip
Old 12-13-2007, 12:00 AM
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Default RE: Advice needed on .25 airframe match please

How's this?

http://www3.towerhobbies.com/cgi-bin...&I=LXEDN7&P=ML
Old 12-14-2007, 11:46 AM
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Default RE: Advice needed on .25 airframe match please

Looks like it might be a keeper. Semisymetrical wing is a plus. Thanks
Old 12-14-2007, 05:49 PM
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Default RE: Advice needed on .25 airframe match please

The suggestion for a low wing Phoenix Sonic is excellent. My friend has had several of them, and they are an excellent flyer and a good ARF to put together. Good luck.
Old 12-14-2007, 09:20 PM
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Default RE: Advice needed on .25 airframe match please

Take a look at the Great Planes P-40 Warhawk.

http://www.towerhobbies.com/products.../gpma1472.html
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Old 12-16-2007, 09:31 PM
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Default RE: Advice needed on .25 airframe match please

The Sonic is a great little bird however it comes out very tail heavy with a .25 (specially with an FP). I've got a 46LA on mine and it balances perfect. However, with a little weight on the nose, it'll still fly fine with the .25.
Old 12-17-2007, 02:36 PM
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Default RE: Advice needed on .25 airframe match please

I think a plane between ABOUT 44" and 48" wingspan would be better for that engine. I have a couple of those engines and one is in a New Era 20 while the other is in a Modeltech Thunderbird, both not made anymore. The NE20 is only about 44" and the MT is about 49", and both on the light side. THe plane you are talking about looks more suitable for about a 40 if you want some zip to it. The 25 would likely work but not be real aerobatic. Just IMHO. I looked real quick just now and did not find much sportwise in the size I just mentioned, but did come across one that might work well...the Modeltech Extra 25-36. It has a 48" span, looks like lotsa fun. Might still be a little under powered though. Good luck on finding something...how about something from nitroplanes? How about fleabay? Jon
Old 12-17-2007, 03:22 PM
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Default RE: Advice needed on .25 airframe match please

I just purchased a Phoenix Sonic 25 a month or so ago, and I've been flying it for about three weeks. I did find it difficult to balance with an OS 25LA, even with it all the way forward, a heavier than normal nose wheel, and the battery as far forward as I could jam it. So I decided instead to used my tried and true OS 40FP (have about 4 gallons through it). It can takeoff comfortably at 1/2 throttle and does nice graceful aerobatics at 1/2 to 3/4 throttle. I do remain mindful that it's over engined a lot and the airframe is constructed for a much less powerful engine.

At full throttle, it's fast enough that I'm worried it'll come apart on me, so I use an 11x5 prop rather than a 10x6. The plus is that it's still penty fast and will now pull straight up until I get bored.

Just yesterday I decided to do a max "G" level turn and it did just fine...full throttle out of a dive, level flight, then roll 90 degrees angle of bank and yank on the stick. No tip stall and a really tight turn. It held together though!

If I were to buy another one, I'd recommend not installing the aileron mount. I ended up taking mine off because the aileron servo interfered with the other servos.

Frank
Old 12-19-2007, 12:50 PM
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Default RE: Advice needed on .25 airframe match please

This has been helpful because I'm looking for an airframe to put a .40FP into.

I was thinking about the GP Combat series planes also.

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