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New EDF Mini Jets- Sabre & MiG15 RCM&E 2018 Special

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Daithi O Buitigh17/10/2018 18:54:07
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1362 forum posts
49 photos

Regarding the 'trail going cold' - this is down to the Royal Snail who won't track anything until it's been delivered. The originating carrier can't update their data because the Royal Snail simply won't tell them anything.

As for non-delivery, I had an item at one time (before the change in tracking) which showed it arrived at the West Belfast sorting office - 4 weeks later it STILL hadn't arrived so I got a replacement - the day after that arrived, the original one also arrived. I did notify the seller offering to pay for the second item but they just replied that, because I'd been put to so much trouble, to forget it.

ken anderson.17/10/2018 19:01:56
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8521 forum posts
773 photos

all covering applied(thanks JC)4 servos fitted...auw 12.9 oz's…...thanks to Mrs S's kitchen/worshop scales....only RX and battery to add.

sabre 22.jpg

ken anderson...ne..1...workshop scales.

Devcon117/10/2018 23:04:36
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1396 forum posts
487 photos

Posted by Piers Bowlan on 16/10/2018 19:03:50:

Excellent work Ken, you are a trail blazer. I wonder if any others are 'in-build' at present?

Looks FANtastic smile d. (and well done Jim yes)

 

The weight looks good, something to aim at.

I now have all the gear but no idea as I've never been near a ducted fan model before but hoping to learn.

Will post the progress sometime November.

Edited By Devcon1 on 17/10/2018 23:06:04

Tim C18/10/2018 12:38:03
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498 forum posts
259 photos

Test results on the AEO 50mm edf unit.

Holding it over the kitchen scales showed about 500gm of thrust at 26amps and 260+ Watts, this compares to the 700gm of thrust and 320w of the FMS unit, both were on a good 2200 3 cell, the motor was warm to touch. The 30amp etc them popped,/so no further tests.

This is pretty rough and ready measure but comparable results, no doubt will be substantially less once installed, and starved of air given the inlet sizes.

ken anderson.18/10/2018 19:06:03
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8521 forum posts
773 photos

I've been flying this afternoon,really nice day in ne...1..land,lot of people at the site....back home did a bit more decoration...of the sabre..

sabre 25.jpg

ken anderson...ne..1..decoration dept.

Erfolg21/10/2018 19:40:08
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11558 forum posts
1274 photos

Is there a consensus as to where the most economical edf unit is available, that is including any handling charges, that does the job?

Is it possible to split the purchase of the fan and motor, paying more postage charges to avoid UK handling charges and VAT (although the vat is not the deal breaker).

Tim C21/10/2018 19:49:05
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498 forum posts
259 photos

Erflog,

The FMS unit from Banggood, back in stock from the 26th so they say, VAT and charge free as declared cost is less than limits!!, delivery usually around two weeks.

The AEO unit from Aliexpress (see my previous post) from ACCHOBBY, delivery normally about two weeks, but in my case 3 months!! I got my money back under the guarantee scheme after 60 days.

You can have my AEO unit, tested but otherwise unused for £22.50 inc post as this is now surplus to requirements as I will use the FMS unit

Keith Sharples21/10/2018 20:11:57
138 forum posts
2 photos

Hi Erfolg.

I have just ordered one of these from Hobby King, they are in stock in the uk Link

I did look at the FMS one from banggood but this came back into stock with HK sooner.

Edited By Keith Sharples on 21/10/2018 20:14:38

Erfolg21/10/2018 20:42:58
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11558 forum posts
1274 photos

Tim are you referring to this fan, as it seems to exceed the £15?

Tim C21/10/2018 20:50:05
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498 forum posts
259 photos

Yes, Banggood seem to use random values of less than £15 on the boxes!  And that’s my review at top of the list,

 

Edited By Tim C on 21/10/2018 20:51:36

ken anderson.23/10/2018 09:55:24
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8521 forum posts
773 photos

added the greenhouse today(canopy)..the occupant has a slight look of fear on his plastic face....AUW is now just over 13oz...with only the brain(RX) to add.....set the controls up and then infinity and beyond.....

sabre 26.jpg

ken anderson...ne...1...infinity and beyond dept...

Anthony Coyne19/11/2018 22:57:10
9 forum posts

Has anyone got an update on flying these with any of the different fans? I'm looking to build one (or both? as a first EDF model) but all of the fans are out of stock, so I'm waiting for reviews plus restocking of the fans..

ken anderson.28/11/2018 09:31:03
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8521 forum posts
773 photos

mine is ready for the off,the fan is drawing 14 amps/140 watts.the model less battery is 13 oz.this is my first EDF model.could I ask some of the more experienced edf modellers ………. does that sound like a fair power to weight combination.

with conventional model motor and prop,i would be happy with the figures....this is where I need someone who flys edf models to advise please....

PS..the sabre in the photo didn't get to the field,i had a mishap with it..and it ended in the green bin.....I had to rebuild the model...new fuz mated on to the old wings,tail ...but that's another tale...I hear you think... kulou

ken anderson....ne..1...… EDF dept.

Tim C28/11/2018 09:46:46
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498 forum posts
259 photos

Ken, 14A seems very low!, see my earlier post, my AEO drew 26A on test, I wonder if lack of air intake is causing the low amps? less air to compress, my test was external to the airframe. Can you test it with battery out and canopy hatch off to see if you get a different reading with more airflow?

I note that Banggood have both the FMS and AEO fan units back in stock

Tim

ken anderson.28/11/2018 10:33:45
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8521 forum posts
773 photos

hello Tim, thanks for replying, after the mishap with no 1,i decided to try a different fan.i bought one of the madthrust jobs from hobbyking,the 50mm/3s model its performance claims are within the spec of the AEO edf.its max amps are 18amps it says. When the model is hooked up and tested its throwing out a fair old draft at the back as well as sucking in a fair bit....and trying to leap away from terra firma…..so seems to have plenty umph...but I thought I would enquire on the forum here to see others opinion's...….. then to the field......I expect it will deffo fly once.....when you read T N's flying report he says that it will fly quite happy on half throttle once its defying gravity.....

ken anderson....ne...1...gravity dept.

Ian Moody28/11/2018 12:53:11
78 forum posts
10 photos

Just out of interest, I have built and flown the mig with a Banggood fan in it and can report that with just the intakes on the plan applied it sank to the deck so I took the cover off (with the canopy etc attached) and it was transformed and flew successfully with a fair lick of speed. I am now trying to work out a way of getting more air in with the lid on that looks ok but have not come up with an idea yet. I notice that there is a distinct lack of flying videos of aircraft from this plan by Mr Nijhuis and RCME which makes me wonder as to how well it actually flew before it was published. Previous free plans normally had a video of the prototype to observe.

ken anderson.28/11/2018 14:26:06
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8521 forum posts
773 photos

well done there Ian,you echo a lot of my thoughts also,i've attempted to leave as much clear space as possible front to fan area....what about a cheat hole underneath on yours... to allow the thing to feed the air in...… same as you I thought there might have been a bit of feedback,video from its creator also....hope I don't end up with an expensive ornament/hangar queen....

ken anderson...ne...1...ornament in the making dept.

Ian Moody28/11/2018 15:11:21
78 forum posts
10 photos

Ken, I have cut a inch and a half square cheat hole just before the fan on the underside of the fuselage but it made no difference and would probably need a louvre type device to guide the air into it but of course you cannot really do that because you land on it. I will probably enlarge the two on the side of the fuselage and try that and if it doesn't work I will place the air frame gently in the skip and call it a day. I think the fact that hardly anybody appears not to have built and flown one speaks volumes.

Steven Shaw28/11/2018 15:55:53
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344 forum posts
187 photos

I am quite far along with my Sabre build with a FMS unit epoxied in [couldn’t buy the AEO unit at the time], and I'm assuming that it will require a larger airflow than the AEO. I’ll make larger side cheater holes by cutting a 25 high by 80 long opening into each side and build a duct over them. I may also replace the block under the wing with a forward facing inlet scoop similar to the P51 or F-16. It’ll be quite the hybrid F-86.

Glen Lewis28/11/2018 16:10:18
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10 forum posts
5 photos

I’m getting close to being done as well. I was planning on putting a giant NACA vent in the belly and trying to eliminate the side vents but it sounds like that won’t be possible, more openings the better I guess!

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