Originally Posted by jofro

Installation and hook up of ESCs is fully complete, throttle calibration and some reprograming was performed followed by first run to check that all works well. Impressive sound and thrust on full stick and I can say it's not only the largest but most likely the most powerfull twin EDF foamy built. Next job will be static thrust test using scale just to give me an idea what it pulls, Joe.

Looks great, was reading the first post in the thread are you still thinking of doing twin 10s?

Originally Posted by erh7771

Looks great, was reading the first post in the thread are you still thinking of doing twin 10s?

Hi 777, I can easilly upgrade this set up to 10-12S by only changing motors. Firstly I have to find out its performance on 8S, unfortunatelly I finished little over 7kg AUW, with all little bits and pieces I have installed and using larger cap. and higher C rated batteries but its still bellow MOP limit. Just taking it out to do more tests and range check, field still too wet to maiden it, Joe.

Back from the field doing the range check and static thrust, better then expected while sitting on soft wheels it pulled 8.3kg dropping down to 8.1kg. It shows how much more efficient are multi powered models. No point going to heavier 10 or 12 cells when I get this power from 8S, Joe.

VID_0001.mp4 (1 min 39 sec)

Originally Posted by jofro

Back from the field doing the range check and static thrust, better then expected while sitting on soft wheels it pulled 8.3kg dropping down to 8.1kg. It shows how much more efficient are multi powered models. No point going to heavier 10 or 12 cells when I get this power from 8S, Joe.
http://youtu.be/bHUFIq2na0s

Joe, I think you're right on dual setups vs a single one.

For some planes dual 90mm setups come out less than expensive than a single 120 - 127 also.

Well, it seem to have almost 2kg more pull then both of my 12S, 127mm single set ups, tho they are both brilliant performers. Mind you I'm using 120a ESCs, heavy gauge leads and 45C paks which obviously improves performance. I'm under severe stress, hoping my CofG is close as this is totally new design and it could end up badly if its tail heavy as I did while ago with my 7.5Kw foamy monster, Joe.

It was smooth as a silk. I flew it today for some 100 meters along the empty beach only half a meter high but under full command in 90deg. cross wind, hoping the conditions will remain for full test flight at the club domany. Joe.

Magic jet fying today in almost perfect conditions, my maiden went better then expected using lighter set of batteries for the first flight and pushing them right down to my limit in less then 3min. flight time. Joe.

My maiden flight today, enjoy it Joe.

P1030199.mp4 (3 min 44 sec)

NICE!!!

This was done with no type of glassing?

What did your AUW end up to be?

Thx

Nice flying

Nice! You did an amazing job on this one... congrats on the successful maiden!

I guess hand launching is out though :-)

No f/glass at all, but leading and trial edging reinforced with balsa. It's all soft top! has to be handled accordinly. Video/maiden AUW was 7kg while using lighter only 30C, 4Ah packs not adequate for this set up. All 4 packs finished pretty warm over 40deg. cel. and right down to 3.7volts per cell. Next flights will be using 4.5Ah 45C and ordering new sets of 5Ah as ad on weight is no issue. It is a floater as you seen my landing, Joe.

Few more flights today with Twin Widow 'running-in' my latest heavier 5Ah packs. Must see the video I'll load later tomorrow of my landing. Just one foot short of the creek, perfect timing. Real challenge at our field to clear 20m trees just 70m short of the strip, then force the nose down building up more speed, the last thing you want on final, and then hope you got enough room to flare it and stop it short of the water at the end of the strip. I always prefer Southerly, Joe.

Twin Widow, here we go again with larger set of battreries, enjoy the footage, Joe.

P1030216.mp4 (3 min 28 sec)

Back again to rejuvenate this monster foamy build, couple of flights today in perfect calm conditions to "run in" larger set of batteries. I mounted vid cam to the nose, stay tuned for some spectacular footage. Joe.

Twin Widow on board video footage, enjoy it, Joe.

VID 0002 (4 min 59 sec)