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DEDICATED JET FOR P20,WHEN - 5/18/2013 9:43 PM   
Chris Pyrah



Posts: 65
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Last Login: 5/21/2013
From: York, UNITED KINGDOM
Status: offline 		Looking at posts on here regarding Airframes for the P20 ,Why is it that the P20 has been around for 3 years or more now but it seems has there never been a decent airframe built specifically for this turbine.Ok the Gbr jets Stinger , but I am thinking about an airframe around the 52" (2400mm) wingspan range with all composite construction, turbine rails fitted with a pipe and tank, electric trailing link retracts similar in shape to the Gryphon/Ultra Flash etc ,a jet that will fit in the car built up ready to go ,not another ruddy ducted fan conversion, I have tried to ask Chinese factories to build something but not had much luck,How many P20 have been sold worldwide ?, (jetcat wouldn't tell me ! )Surely there would be a good market out there for a jet of this type,I know six in our club who would buy one if available.Reckon whoever manufactured something like this would have a winner, I have built /converted six different airframes now for my P20 all flew well, but a compromise at the end of the day,I would hope a dedicated airframe will be available sometime COME ON MANUFACTURERS GET SOMETHING BUILT

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RE: DEDICATED JET FOR P20,WHEN - 5/18/2013 10:07 PM   
madmodelman



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From: Corby, Northants, UNITED KINGDOM
Status: offline 		2.4 metre span Chris, wadya want, a glider lol?

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RE: DEDICATED JET FOR P20,WHEN - 5/18/2013 11:25 PM   
Henke Torphammar



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From: Ljungby, SWEDEN
Status: offline 		This topic has been up before. I still think the market is too small, and we need to share airframes with the EDF guys. With more powerful EDF options this is not a big problem. Now days we need only a 80-90mm EDF to power a fairly large plane, this makes the inlets closer to scale. Well, not 100% scale but good enough to not look like a beluga.

I'm involved in developing convertion kits for popular EDF airframes and they do very well with turbine power. The ARF's are not dedicated, but they are still very good and with the convertion kit they are still "ARF" not needing any custom solutions. (I've engineeerd dedicated kits for about 10 electric airframes)

I can not see what a dedicated airframe would have that a convertion don't, except the label on the box. But I guess in the future the boxes will say turbine 15-30N too :-)

If we are too trust the gossip the future holds small turbines with lower priceing, but with less performance (thrust to weight ratio) So the choice of airframe is more critical. A 35-40N turbine would be awsome, but weighing in at 1lb it's still useless for alot of airframes.

< Message edited by Henke Torphammar -- 5/21/2013 6:14 AM >

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RE: DEDICATED JET FOR P20,WHEN - 5/19/2013 6:48 PM   
Pat Barnes



Posts: 177
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Last Login: 5/20/2013
From: Dorset, , UNITED KINGDOM
Status: offline 		From what I've seen at UK jet meetings, the P20 craze came and went very quickly. IMO the problem with the P20 is it's a very expensive little motor, which goes into an expensive little jet that frankly just doesn't have any 'presence'. Most people have gone back to the bigger turbines (80 and up), so I reckon if you want an airframe for a P20 it will be a DIY job. The GBR Stinger is about it when it comes to nice looking little jets.

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RE: DEDICATED JET FOR P20,WHEN - 5/19/2013 7:02 PM   
siclick33


 

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From: York, UNITED KINGDOM
Status: offline 		Chicken and egg??

Are people going away from P20s through choice, or because they can't find many decent airframes to put them in?

A P20 isn't any more expensive than many other engines and if you calculate a 'cost per flight' basis then my P20s are probably the best value engines I own.

I would be interested in dedicated P20 airframes or professional conversion kits (such as those made by Marc for the Habu 32) but there just doesn't seem to be much around. Unless you want to convert something from the likes of HobbyKing or Nitroplanes you are pretty much stumped.

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RE: DEDICATED JET FOR P20,WHEN - 5/20/2013 2:42 PM   
RAJ


 

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From: birmingham, , UNITED KINGDOM
Status: offline 		chris that L59 is nice not many airframes around for p20s i wish ther was a small boeing 727 for a single p20. eflite need to bring out more edf 90mm fan jets as they have some good flying planes like the habu which flys nice on a p20"

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