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Author Topic: E-wings - a new UK based EPP wing manufacturer  (Read 2999 times)

English Turbines

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #60 on: May 10, 2018, 11:42:25 PM »

  Looks nice, I would extend the fuz some behind the wings Trailing Edge though.....about 60mm should do it, maybe even 75mm..?

  Otherwise, its going to be noisy and nose heavy for sure......The idea is to have some length in the Fuz so you have a bigger choice of Lipo weights and position.
  It's going to be nose heavy if you dont do this.

 Ideally, the Flight lipo would be over the CG, meaning you could put any Lipo in there and not worry about being able to balance it...Keep that in mind.

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iwan_canobi

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #61 on: May 11, 2018, 10:07:57 AM »

The fuse has already been extended a bit from the first version as it was extremely tail heavy, so needed extended forward rather than backwards. There is loads of room for lipos and it can take a fair amount of weight, in fact it needs a minimum of 5000mah really to balance correctly, the CG is far forward on forward swept wings, almost at the leading edge where the wing meets the fuse.

It's not too noisy, certainly not any noisier than a regular swept wing.


Oh very nice - does it have a name yet?

I have a few in mind but haven't settled yet, soon though! :)
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Andy Sayle

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #62 on: May 11, 2018, 10:49:57 AM »

Looks ace, can I buy one yet?!  Ha ha!

Andy
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iwan_canobi

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #63 on: May 11, 2018, 10:55:04 AM »

Ha ha, not quite yet! Got a good few test flights last night (until a capacitor on my ESC exploded!) so I've got some changes to implement and build a 'Proto2' which should hopefully be much closer to production ready. So still another month or so I reckon before I can start taking orders.

What I can say so far is it's nice and stable, and super easy to launch even with a 1.8kg loaded weight. Proto1 is a heavy beast to get the CG right but I've lengthened the fuse for my next ones so it should be much easier.

It is coming though, don't worry! :D
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English Turbines

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #64 on: May 11, 2018, 09:55:34 PM »

The fuse has already been extended a bit from the first version as it was extremely tail heavy, so needed extended forward rather than backwards. There is loads of room for lipos and it can take a fair amount of weight, in fact it needs a minimum of 5000mah really to balance correctly, the CG is far forward on forward swept wings, almost at the leading edge where the wing meets the fuse.

It's not too noisy, certainly not any noisier than a regular swept wing.


I have a few in mind but haven't settled yet, soon though! :)

  Hi m8,
              "the CG is far forward on forward swept wings, almost at the leading edge where the wing meets the fuse."

  I almost wonder if we are talking about the same model here...?.....The sweep forward on this model is minimal to say the least. The CG is not going to be where you predict it to be.
  There is no way you will be able to load up this model with a 5000mah Lipo and get it to balance, unless you plan on putting the battery over the wing somehow..?



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« Last Edit: May 11, 2018, 10:02:34 PM by English Turbines »
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iwan_canobi

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #65 on: May 11, 2018, 10:12:41 PM »

It depends if you are looking at the leading or trailing edge sweep, but anyway, my comments are not based on predictions but real world experience, this flies best with the CG about 1cm back from the leading edge. At 3cm back it's unflyable.

For the first prototype with the shorter nose I had a 5000mah 4S as far forward as possible, 2x runcam HD2's in the nose, an FPV cam, and a bunch of lead weight to hit the CG. That's why I've extended the nose for the next revisions. So as I say it's from testing that I'm saying the config, not prediction.
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English Turbines

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #66 on: May 11, 2018, 10:25:04 PM »

It depends if you are looking at the leading or trailing edge sweep, but anyway, my comments are not based on predictions but real world experience, this flies best with the CG about 1cm back from the leading edge. At 3cm back it's unflyable.

For the first prototype with the shorter nose I had a 5000mah 4S as far forward as possible, 2x runcam HD2's in the nose, an FPV cam, and a bunch of lead weight to hit the CG. That's why I've extended the nose for the next revisions. So as I say it's from testing that I'm saying the config, not prediction.

  Hi M8,
               Oh, okay pleased it's worked out, Im still surprised though.....What did you use for a motor, did it come out of a washing machine.....:)
   Seriously though, a 5000mah 4S is useful capacity so what prop / motor combo are you using..?...Is it an amp gobbling screamer or a cruiser..?....and more importantly, will it work as either?
 What is the wingspan again..? 

                                                                                               :vulture:
 
   
 



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iwan_canobi

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #67 on: May 11, 2018, 10:38:33 PM »

No worries, I'm testing various motors - so far I've ran a 1400kv 2836 with 9x5 prop which is more of a cruiser. Yesterday I was testing a 3638 1800kv monster on 8x6, that's heavy and screams but it can still slow down quite a bit. All up weight is around 1.8kg but it still has a decent glide slope, the wingspan is 1.2m.

So it should be a good all-rounder, there is space for 2x 5000's in that bay (on their side) and I reckon you could hit the CG with that config for a long range endurance platform!

I know it probably sounds wrong, but this foam is dense and the rear is bulky, couple that with an ESC far back and the vtail and it means you need a lot in the front to offset it.
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ClippedWing

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #68 on: May 12, 2018, 11:51:51 AM »

This is awesome, definitely a lack off epp planes! I was going to do similar a few years back but I could only import 4m x 2m blocks from Germany at the time and my wife would of killed me!

If you want some build manuals done let me know, I did the build manuals for Bormatec and helped set up fpv1.de with photography/digital media. Good luck with your Ewings!
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iwan_canobi

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #69 on: May 12, 2018, 01:16:22 PM »

This is awesome, definitely a lack off epp planes! I was going to do similar a few years back but I could only import 4m x 2m blocks from Germany at the time and my wife would of killed me!

If you want some build manuals done let me know, I did the build manuals for Bormatec and helped set up fpv1.de with photography/digital media. Good luck with your Ewings!

Cheers man! Once I have the build process down I planned to do a one-sheet overview then a detailed build video. Will maybe give you a shout for some guidance though, thanks!

Yeah the wife is already getting close to killing me as I've been spending so much time on this. Basically get home from work, have dinner then disappear for the rest of the night! I keep trying to tell her it's a business and just a hobby but I don't think she's buying it! :P

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BigT

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E-wings - a new UK based EPP wing manufacturer
« Reply #70 on: May 12, 2018, 01:18:22 PM »

Great progress! Based on my experiences with manufacturing rotor blades for the very small model Autogyro market I would urge you to start looking at post and packaging options sooner rather than later. Especially the method of packaging. I was completely taken by surprise at the number of orders we had from overseas and the cost of shipping from the U.K. 


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ClippedWing

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #71 on: May 12, 2018, 02:25:55 PM »

Cheers man! Once I have the build process down I planned to do a one-sheet overview then a detailed build video. Will maybe give you a shout for some guidance though, thanks!

Yeah the wife is already getting close to killing me as I've been spending so much time on this. Basically get home from work, have dinner then disappear for the rest of the night! I keep trying to tell her it's a business and just a hobby but I don't think she's buying it! :P

Yes please do! More than happy to help! Fpv1.de is the largest distributor now in Germany!
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iwan_canobi

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Re: E-wings - a new UK based EPP wing manufacturer
« Reply #72 on: May 15, 2018, 03:48:46 PM »

Great progress! Based on my experiences with manufacturing rotor blades for the very small model Autogyro market I would urge you to start looking at post and packaging options sooner rather than later. Especially the method of packaging. I was completely taken by surprise at the number of orders we had from overseas and the cost of shipping from the U.K. 


Sent from my iPad using Tapatalk

Thanks for this, it's solid advice! Every time I post on instagram any update I get a few people from all over messaging me asking when it will be available! I've been looking into boxes but I have no idea what postage outside the UK will be! Will need to get checking.

I'm well into the build of the next version which I'm hoping is 90% production ready. I'm off on holiday for a week on Thursday which will slow things a bit, but I'll be itching to go when I get back!
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