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New- 2018 CONCORDE for 4x50mm EDF

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Nigel R17/05/2019 22:49:21
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4070 forum posts
694 photos
  1. Very nice job Tony. Really quite excellent. I like it!
Robert Parker18/05/2019 09:52:23
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996 forum posts
1353 photos

Very very nice Tony

Tony Nijhuis19/05/2019 23:14:02
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609 forum posts
233 photos

Finished model AUW 5lbs so not light!

Tony Nijhuis19/05/2019 23:16:13
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609 forum posts
233 photos

Tony Nijhuis19/05/2019 23:18:44
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609 forum posts
233 photos
Stephen Jones19/05/2019 23:43:21
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2878 forum posts
1648 photos

Tony,

Just how much weight have you added in the finish,

It seem to struggle this time around to get airbourne and that landing was not as good as the last.

And it seems to slide in the air as if it`s on ice.

Just how windy was it this time around from the last flight.

Steve

ken anderson.20/05/2019 08:57:27
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8743 forum posts
808 photos

Well done Tony,looks nice,it did well to get off the bumpy old ground there I thought,the landing looked ok,as long as it wasn't to much stick bending for the elevator/flare....

Ken Anderson...ne..1....flare dept.

Simon Chaddock20/05/2019 10:43:58
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5773 forum posts
3052 photos

Very nice Tony and particularly that landing on grass that for full size would have been a corn field!

A bit cheeky but my only criticism is for that for true scale the wing from the front should look like this.

Concorde front

My favourite Concorde picture.

All done before the days of computer simulation it does rather show where all those £millions went on wind tunnel testing. wink 2

.

Tony Nijhuis20/05/2019 13:57:15
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609 forum posts
233 photos

The grass was quite long so those 11/4" wheel were struggling....a lot to ask really for a 5lb models

The finish covering has added another 5oz so AUW is now 5lb. The power to weigh is now approaching its limit with these fan units...The fan units I used are the 50mm HK 11 balded 4S EDF units. These are not great (and are not available any more). The FMS 50mm 4S unit which are lighter (will save 6oz over the 4 units) and delivers another 6oz of thrust per fan (or another 1.5lbs over the four units), should really liven the model up.... the MK2 Concorde will have these plus a 5S pack!!!!!

I prefer to use just one battery pack to serve all four EDFs as it makes the weight less and save on multiple charging.....Unfortunately the current draw from a 4S pack 14.4v does cause the voltage to drop over the 4 motors so each motor is only getting 3.5S under load......In the past i have gone up another cell count so multiple 4S motors will generally be happy with a single common 5S pack. As there will be a high voltage, the current draw to match the power, can be reduced sightly so a 4500mah 5S lipo will give similar duration as a 5000mah 4S lipo (as long as you don't fly flat out)

Simon, regarding the wing tip drop, there is a conundrum here... the wings will flatten out in flight and at mach 2, they are almost straight.....so for scale flying speed...I think i got it about right

Tony Nijhuis26/05/2019 18:28:16
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609 forum posts
233 photos

Decided to stripout the old Dr MT units and replace with the FMS 50mm 4S units....The extra thrust from each fan should be around 120g or 4oz.....That 480g or 18oz additional thrust over the 4 units.

The weight of the FMS units are less so the overall weight saving was 5oz so the AUW dropped to 4lb, 11oz

Tried the model at Hastings yesterday and what a transformation!!!!....no problem taking off from quite long grass and the climb out was a good 40deg......Now cruises at around half throttle!...still using the 4s 5000mah pack too....Happy days

img_7206.jpg

img_7208.jpg

Stephen Jones26/05/2019 19:16:18
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2878 forum posts
1648 photos

Looking Forward to the new Video Tony.

Steve.

Ron Gray26/05/2019 19:36:11
2310 forum posts
998 photos

It’s on YouTube, Essential RC put it up a while ago. Looks really good.

Stephen Jones27/05/2019 09:02:06
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2878 forum posts
1648 photos

Hi Tony,

That flies much better now yes.

Looks great in the air, and the slow mo video makes it look so realistic.

Great job.

Steve

Tony Nijhuis27/05/2019 23:02:33
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609 forum posts
233 photos

Thanks Steve,

It was a rather nasty windy day, cross the strip too....Mk2 version is on the go now!

Tony Nijhuis27/05/2019 23:03:31
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609 forum posts
233 photos
https://www.youtube.com/watch?v=kbD0A2cMtoc&fbclid=IwAR07_hLnk5dFtD3S9RES3vWi_YgQOJUSTFMy6A5511Na4HextIied2s8-ko

Edited By Tony Nijhuis on 27/05/2019 23:04:54

Steve Adams27/05/2019 23:46:57
196 forum posts

Hi Tony,

Your Concorde is absolutely amazing, will you be doing a plan at some point in the future in RCM+E? I do hope you do as I'd love to build one as a tribute to my late mum and grandad as this incredible aircraft has a strong family connection.

Thanks again TN for modelling such a fine plane and doing it justice too, you are a master sir.

Steve

Stephen Jones28/05/2019 00:16:39
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2878 forum posts
1648 photos
Enjoy.
cymaz28/05/2019 08:13:20
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9325 forum posts
1211 photos

Stunning Mr N yes. SR71 next ?

Tony Nijhuis28/05/2019 23:10:43
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609 forum posts
233 photos

Thanks Guys,.....and thanks Stephen for putting the video up

It will be a plan and cnc pack just like all the others....just building Mk2 to check the build is ok after all the modifications

Doc Marten29/05/2019 09:26:06
695 forum posts
7 photos

Dammit! I dropped in a couple of times over the weekend but missed this.

Have you tried it from tarmac at all?

Edited By Doc Marten on 29/05/2019 09:28:56

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