Matt Halton Posted March 21, 2017 Share Posted March 21, 2017 Quote Link to comment Share on other sites More sharing options...
Gordon Whitehead 1 Posted March 21, 2017 Share Posted March 21, 2017 Hi Matt There's nothing like a Lightning for getting me to crawl out of the woodwork! What a lovely dinky little beast and what an absolutely tremendous way to employ Habu UMX power and control systems You should send Eflite some pics and have them wishing they'd thought of it first. Your pic had me trawling Youtube for that video you shot of my li'l 70mm fanned F1A back in the good ol' days at Woodspring. My goodness I could have done with AS3X technology on that day. I hope that yours goes superbly, and after every flight you end up giggling as uncontrollably as I did on your video. Cheers Gordon Edited By Gordon Whitehead 1 on 21/03/2017 19:26:01 Quote Link to comment Share on other sites More sharing options...
extra slim Posted March 21, 2017 Share Posted March 21, 2017 Superb, got to see some flying shots!!.. looks beautiful, hope it goes well Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted March 22, 2017 Author Share Posted March 22, 2017 Hi Gordon! Good to hear from you ,fellow Lightning lover! Yes I remember your mile wide grin after that flight, did you ever find out why you had some odd flying behaviour occasionally? It looked superb in flight though. Am presently loving this new tech, really smooths out models in flight and so small too! Already have my next one in line, a Buccaneer for twin Habu fans but exploring rotor upgrades and motors too. Again from hollowed out foam, but more complex, am going to need to hot wire in sections, even though it will only be 19" span at 1/28 scale ( approx) Ha ha I did post a pic in E-Flite's Facebook page, just to see...zero response lol. Maybe a flight video will wake them up! Extra slim, many thanks, the aluminum tape finish was maybe not the brightest idea I had, it marks so easily, but from a short distance, looks the part.I will of course post flying photos if all goes well.Gordon, can you recall where your CG was on your Lightning? I make it just under half the fuselage length, sound OK to you?Thanks guys Quote Link to comment Share on other sites More sharing options...
Gordon Whitehead 1 Posted March 22, 2017 Share Posted March 22, 2017 Hi Matt. I trawled my old RCG thread to find out about the CG. My Lightning's CG began life at 68% of the 14in root chord (9.5in aft of root leading edge). The plane flew OK and handled not too badly, but on hearing that the Mick Reeves Lightning CG was at 75% root chord, I decided to shift it back. I was able to move the battery aft, and the CG went back about 0.85in to 74% root chord where it stayed. The handling problems resulted from a combination of excessive aileron movement, the need for some washout, a lot of effective downthrust due to the duct installation, a very low CG because the batteries were mounted low, and poor weather preventing a decent run at getting it sorted. Eventually I loosened the lower surface covering from the outboard half of each wings and glued it back on with 5deg washout twisted in. That cured the uncommanded 1/4 left flicks it would perform if trying to turn too slowly. Funnily enough, it would always stall dead straight with no wing drop, both before and after that mod. Despite good intentions I never got on with building a successor as real life issues got in the way and then I had a change of direction. The appearance of your and Pete Taylor's threads as got me drooling again as I have a Wren 44 needing an airframe, which could well end up Lightning-shaped. But I need to finish a biplane project before tackling anything else at present. Terry (Pontious on RCG) flew two EDF Lightnings with great success, and Pete's in-flight photos of his Jimjet Lightning are fantastic, so here's hoping for a stretch of great flying weather to crown your model's initial flights with success! Cheers Gordon Edited By Gordon Whitehead 1 on 22/03/2017 19:55:53 Quote Link to comment Share on other sites More sharing options...
Monz Posted March 26, 2017 Share Posted March 26, 2017 Nice Lightning. I'd love to see a thread on your Buccaneer. I'm busy with a stick n tissue free flight one at 1/20. Cheers Edited By Monz on 26/03/2017 00:51:31 Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted April 18, 2017 Author Share Posted April 18, 2017 OK update time! We went to test fly and unfortunately having had no experience of installing AS3X in a scratchbuilt before, the elevator being inverted for some reason inverts the gyro! She went from a hand launch straight into a loop and landed on her belly, a few small concrete dents but that's all.Wasn't until properly checked the cause was found.So, I bought an SPMA3060 Spektrum USB programmer cable and after much faffing with drivers, finally reversed the gyro successfuly.Whilst there I loaded the UMX MiG 15 settings into the brick, and activated AS3X with the gear switch.As luck would have it, the CG is pretty much bang on 75% of the root chord.She's all ready to go again now and ready to test tomorrow.Will let you guys know how she went tomorrow.Gordon ,so glad you fixed yours, washout always wins the day More soon.PS , Pontius ( Terry ) has a thread going on RCG and has twin EDF's in his new F1a depron build.Oh yes, friend bringing his DSLR with zoom tomorrow, hope to get some great in flight pics. Quote Link to comment Share on other sites More sharing options...
Gordon Whitehead 1 Posted April 18, 2017 Share Posted April 18, 2017 Hi Matt It sounds as if there's no shortage of power and that it should do a "rote" straight after launch .... once you've got used to it! I'm really glad your Lightning survived and am looking forward to seeing some good in-flight pix though it'll no doubt take some fast panning with the camera. Good luck for tomorrow Gordon Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted April 18, 2017 Author Share Posted April 18, 2017 Hi again Gordon and thanks, fingers crossed Here's a very short power test video indoors, on the floor, what to you think?https://youtu.be/9Ni6PaWshqg Quote Link to comment Share on other sites More sharing options...
Matt H Posted January 13 Share Posted January 13 My Lightning flew today - 6 years later! Needed 3S to motivate. Very very happy. Matt 6 Quote Link to comment Share on other sites More sharing options...
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