Replies to This Discussion

ModeratorPermalink Reply by Morli on March 1, 2010 at 4:18pm

James, does that mean your retracting the offer? :( .
yes I am sure you can make one that can bullet stop. I meant that most of hobbiest
( Including me) here would be crashing them pretty often while testing them with AP inside. The safety of AP is paramount in all our minds i guess and foam fuselage gives such comfort by default. So some access hatch etc or more inputs on insides of fuselage might make it more attractive with Diy guys here. Also price point you have mentioned is very interesting. I will be interested in fuse any way if i can figure out where to source the wings too.
Sandwitch core fuse :)) ,
Pls let us know the results of foam parts you have created too. Any and all photos are very much apreciatedThanks

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Permalink Reply by James F. on March 1, 2010 at 4:35pm

You can use the stock EZ* wings and tail. The AP on the inside will be better off inside carbon and kevlar fuse since it will be able to take a larger impact before crushing the AP. You could always hot glue or tape on soft foam bumpers for testing when needed. It isn't the most aerodynamic option, but it works really well when you know youll be crashing.

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Permalink Reply by Brad Powers on June 28, 2010 at 9:51am

Is this still happening?

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Permalink Reply by James F. on June 28, 2010 at 10:21am

Yes! I had to put this project on hold due to school, but I will be starting work on it again this weekend. I should have the first test fuselage out in a week or two. I'll keep everyone posted and have pictures of the final airframe once completed.

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ModeratorPermalink Reply by Brian on June 29, 2010 at 4:33pm

That's good news James F. Are the stock wings going to be used or are there fiber/carbon options there too?

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Permalink Reply by James F. on June 29, 2010 at 7:45pm

For now its just going to be stock wings, but I will see what I can do about some wings too.

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Permalink Reply by Ritchie on February 15, 2011 at 1:50pm

Any news on this or should I just get a carbon mods kit and vacpack it myself?

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Permalink Reply by James F. on February 15, 2011 at 3:31pm

I have produced a few of these out of fiberglass and will be happy to sell you a couple of halves as a diy kit. Just let me know if you want some pictures of what I have produced so far. I could do carbon or a mix/specific layup if you have something in mind that you want.

Right now I am working on creating a composite foam core bulkhead to insure correct allignment of the halves.

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Permalink Reply by Ritchie on February 15, 2011 at 5:05pm

Any pictures would be nice.

The Easystar by specification is able to lift 900g extra without affecting the flight characteristics so I (a relative plane noob) cannot fly it. So a lighter version would only help the situation but by how much does your CF version beat the foam? If its not much I may go ahead with chopping my borked Easystar to create more streamlined Easystar. I can get carbon fibre as well as kevlar for £25 per sq.metre and with them laid cross weave rather than parallel and vacbagged it should be pretty sturdy.

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Permalink Reply by James F. on February 15, 2011 at 5:40pm

I haven't weighed the aircraft yet but it will be heavier.  You can try using a single layer of 1oz carbon to make the plane lighter but the plane wont be sturdy enough, and you'll find it will deform even under the lightest of flight loads at 900g. The main purpose of making a composite plane is to enlarge the payload bay. The stock plane can fly with more than 900g and even more if you use EZ glider wings.

If you plan on doing your own vacuum bagging around the stock foam EZ you will want to make sure you dont go above ~1psi or you'll crush the foam. With that in mind, you will need a very thin epoxy which will be hard to keep an ideal fiber volume ratio. If you want a set of EZ moulds I can help you with that as well.

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Permalink Reply by Hamish on February 16, 2011 at 6:34am

Just buy some high performance glider wings to go with the CF fuse .

 

There is no point toiling over moulds for the EZ* wings when existing, more efficient, proven wings exist.  Just my 2 pence ;]

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Permalink Reply by James F. on February 16, 2011 at 8:14am

Very true, but they would have to have the same fuselage interface or you would have to create some sort of wing attachment "hard point". Might as well just buy the whole glider at that point...

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