Tony Richardson Posted September 23, 2020 Share Posted September 23, 2020 Trevor,this picture is from the 2009 Joe nall meeting in the US, thought you might like it for inspiration, a model of a prototype that was never built or flown only in a wind tunnel.. Tony.. Edited By Tony Richardson on 23/09/2020 02:53:52 Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted September 23, 2020 Share Posted September 23, 2020 I had a Rutan Cozy design published in Ken Sheppard`s old mag., Model Flyer or something like that. It was made with a hollow 2mm Depron wing and a 3mm Depron crucifix fus. and sported drag rudders moving outwards only as per the full size. Flew very well and was quite aerobatic too. This was a test model for a 1/4 scale i/c version but it refused to lift, probably due to lack of power, and now languishes in the loft. There are suitable electric power units available nowadays but I very much doubt if I shall bother. Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted September 24, 2020 Share Posted September 24, 2020 Hello All, Thought I'd join in here. Nothing special or fancy, but recently finished this SLEC FunFly. Actually the 3rd one I've had, built as a sort of 'hack' to get back into the swing of things. Old ASP .40 in the nose. It's not actually as wonky on the u/c as it appears! Cheers Matt 1 Quote Link to comment Share on other sites More sharing options...
Redex Posted September 24, 2020 Share Posted September 24, 2020 Hi Matt, I too have a Slec FunFly electric version and am struggling a bit with the C0fG setup. Can I ask if you measured the CofG with the model in the normal flying position or was it inverted. Many Thanks Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted September 24, 2020 Share Posted September 24, 2020 I set my CG with the model upright because I put some rather heavy 4" wheels on it, but to be honest, as long as it's somewhere between 25% and the main spar, it'll be fine as a starting point. If you are using a lightish motor, you'll probably need to wiggle the lipo forward as much as possible as the front is lighter on the electric version I believe (abs cowl?). Either that or use a heavier pack. The only models I balance inverted are low wing ones and some biplanes. HTH Quote Link to comment Share on other sites More sharing options...
Geoff S Posted September 24, 2020 Share Posted September 24, 2020 The SLEC (Precedent) Funfly is a great flying model. I had a couple and I passed my A with the first. They are quite weak in the middle because of the mid-wing design. Mine had a ST34 engine and when the model blew off my stand it fell on one wing tip. There was enough inertia in the engine weight to snap the fuselage just around the wing seat where it is weakest. Quite an easy repair and I reinforced the fuselage with carbon tow around the wing seat. Yours looks very nice, Matt and it's a good choice to get you back in the groove. Can't recall any CoG issues with either of mine and I originally had an Irving Q40 in the first. I replaced with the ST34 because it was a bit too much for a beginner. An electric version may have problems in that regard because the electric motor is lighter than an equivalent glow engine. Geoff Quote Link to comment Share on other sites More sharing options...
alan p Posted September 26, 2020 Share Posted September 26, 2020 6 months lockdown modified Zirolli BV141b.Cg Lateral balance to sort out. Going to be a real cheek clencher Quote Link to comment Share on other sites More sharing options...
Geoff S Posted September 26, 2020 Share Posted September 26, 2020 That's a beautiful model of an incredibly ugly prototype, Alan I can see that llateral balance might be a issue but it must have been on the full size. I really can't see the thinking behind the unusual layout and what advantages it might offer that led to its design. Is that a pusher propped engine at the rear of the cockpit? Geoff Quote Link to comment Share on other sites More sharing options...
alan p Posted September 26, 2020 Share Posted September 26, 2020 Hi Geoff Thankyou for the comment Rear of the nacelle should be glazed, but it proved a bridge to far. A Friend printed a tail cone and I painted silver to represent glazing. 24 individual front panels though Alan p Quote Link to comment Share on other sites More sharing options...
Erfolg Posted September 26, 2020 Share Posted September 26, 2020 Alan A much smaller version flew at our clubs Fly-in last year. Much to my surprise it flew, albeit rather fast. But it flew, surprisingly that was its first flight. The glassing was actually painted black, there was non. A free plan apparently from a mag, Yours looks great Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted September 26, 2020 Author Share Posted September 26, 2020 Posted by alan p on 26/09/2020 11:34:16: 6 months lockdown modified Zirolli BV141b.Cg Lateral balance to sort out. Going to be a real cheek clencher Ooh, I love that! was going to build the Ken Sheppard one, but didn't. Have you got any details on build, etc. and possible plan? Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted September 26, 2020 Author Share Posted September 26, 2020 Quote Link to comment Share on other sites More sharing options...
alan p Posted September 27, 2020 Share Posted September 27, 2020 Hi Paul Zirolli plan from outerzone, modified to 2 part wing, main fuselage also modified from sheet slabs to formers built on a mandrel and planked to keep it true. Also lengthened to give more scale appearance. Sc 52fs and retracts fitted. Most mods done on the back of a fag packet except the fuselage formers had a go a CAD for those. Some pictures in the album but not many. Used Sadolin PV 67 satin for fuel proofing, only took 50ml +10% catalyst+10% thinners brushed on, did whole model with some spare. That's from a ltr tin so plenty left for 2 more airframes that need fuel proofing. Alan p Quote Link to comment Share on other sites More sharing options...
Robert Parker Posted September 27, 2020 Share Posted September 27, 2020 Hi All, Finally finished my P40 which I started in 2013 and dumped in the attic after a mishap with some dope. Back in April this year I felt that I had to finish it off, so after carrying out repairs to the warped wings and replacing the pushrods for servos for the ailerons. Finished in RAF colours and using Neville Duke's markings. Powered by an OS .61FX with the Top Flight in-cowl silencer, Robart twist and turn air up air down retracts. Quote Link to comment Share on other sites More sharing options...
Geoff S Posted September 29, 2020 Share Posted September 29, 2020 I built this Liddle Stik from a free plan downlooaded from Aerofred earlier this year just after the lockdown had started but was able to test fly it before things got really serious (from my POV, anyway). I've not been flying for months, sadly. In a fit of whimsy I decided to decorate it All done with a bit of a google search for images, Paint and Publisher and some clear sticky back decal paper. ... and a close up of the logo. I'll offer it as a solution to the Covid 19 pandemic, perhaps ... or perhaps not Geoff Quote Link to comment Share on other sites More sharing options...
Graham Davies 3 Posted September 29, 2020 Share Posted September 29, 2020 My latest Biplane. Started life from a plan for a model called a Viva, but only the wing platform remains. It's enlarged 110% to end at 47" span. Maiden was supposed to be today, but the undercarriage are a little too far back, giving me a nose-over and some minor damage. Ted is safe and well though... Quote Link to comment Share on other sites More sharing options...
Tosh McCaber Posted September 29, 2020 Share Posted September 29, 2020 Any more details, Geoff, Graham- power, batteries(?)prop etc? Edited By Tosh McCaber on 29/09/2020 20:23:08 Quote Link to comment Share on other sites More sharing options...
Geoff S Posted September 29, 2020 Share Posted September 29, 2020 Tosh: The detail of the build, including the power train are here. It's on 3S 2200 mAH LiPo with a 10x6 APC prop. Geoff Quote Link to comment Share on other sites More sharing options...
Graham Davies 3 Posted September 29, 2020 Share Posted September 29, 2020 Tosh, 4250 Motor, 70A ESC, 4S 3300 Battery. Prop is currently 14x8, but I think it's under-propped (I have a post on me lost Watts!). I reckon a 15 or even 16x8 will do it. 47" span, 5lb 4 Oz, 15Oz/sq ft loading. It looks like it'll fly great, if I can get it off the ground! Graham Quote Link to comment Share on other sites More sharing options...
Tosh McCaber Posted September 29, 2020 Share Posted September 29, 2020 Thanks for the info guys- for my own self build leccy conversions. Edited By Tosh McCaber on 29/09/2020 22:41:23 Quote Link to comment Share on other sites More sharing options...
Tosh McCaber Posted September 29, 2020 Share Posted September 29, 2020 Excellent build thread Geoff! Quote Link to comment Share on other sites More sharing options...
Graham Davies 3 Posted October 1, 2020 Share Posted October 1, 2020 Properly this time! Just completed the maiden flight of my Viva-ish. 47" span, 5lb 4Oz, 4S on a 16x6 today giving me 700W or thereabouts. And it really did fly without a single click of trim! A first for me. Ted the pilot was bought for a model over 20 years ago. He's been patient... Graham Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted October 2, 2020 Share Posted October 2, 2020 Wow, over 570,000 views for this thread. Nice one Paul, great stuff Edited By David Ashby - Moderator on 02/10/2020 09:48:03 Quote Link to comment Share on other sites More sharing options...
Mowerman Posted October 2, 2020 Share Posted October 2, 2020 I check out this thread regularly, mostly the first thing I look at. Quote Link to comment Share on other sites More sharing options...
fly boy3 Posted October 2, 2020 Share Posted October 2, 2020 Me too Mowerman, next to vids of modellers flying their newly built models. Quote Link to comment Share on other sites More sharing options...
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