Stuart Z Posted February 16, 2019 Share Posted February 16, 2019 Looks good, I’d probably opt for larger wheels on the dolly, ingenious release mechanism!! Depends on you strip! Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 16, 2019 Share Posted February 16, 2019 Fortunately I mostly fly off a tarmac strip but could obviously fit larger wheels for grass, the ones fitted are 4 ½” diameter. Quote Link to comment Share on other sites More sharing options...
Stuart Z Posted February 16, 2019 Share Posted February 16, 2019 Should be enough for most grass then! s Quote Link to comment Share on other sites More sharing options...
martin collins 1 Posted February 16, 2019 Share Posted February 16, 2019 Picked this Bi-Fly 25 up today, Thunder Tiger 35 pro, looking forward to getting it into the air, not flown glow for donkeys years but it came with 3/4 gallon of fuel so it would be rude not to try it before i convert it to electric Quote Link to comment Share on other sites More sharing options...
Max Z Posted February 17, 2019 Share Posted February 17, 2019 Own design, first flights today: Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted February 17, 2019 Share Posted February 17, 2019 Very interesting Max z, how did it fly and how do you control pitch, yaw and roll? Quote Link to comment Share on other sites More sharing options...
Max Z Posted February 17, 2019 Share Posted February 17, 2019 It flew ok, but there are a few issues I have to resolve, like the C of G. It needed 20 grams extra up front to get it to fly comfortably, which is a lot for an airplane of a mere 220 grams. The other thing is motor power. It was just enough in todays conditions ( 4-5 m/s wind), could do with a bit more. Mind you, the current motor is a very small drone motor of 18 mm diameter, so replacing that with a bigger one could solve both issues. On hindsight I should have used carbon tubes rather than the 5 mm beech dowel for the tail booms, lighter and better twist resistance. That is why I added the connecting bamboo skewer between the fins, it would have just been too floppy without. The skewer firms it up considerably. Pitch and yaw are controlled with the red tail surfaces, oriented as an inverted V. No roll control. Span is 670 mm. Max. Edited By Max Z on 17/02/2019 15:45:44 Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted February 17, 2019 Share Posted February 17, 2019 Thanks Max, glad you got through the maiden and great looking model. As you say carbon fibre and the back end and a slightly larger motor and you should be close with the C of G. All the best and let us all know how you get on. Chris Quote Link to comment Share on other sites More sharing options...
Stuart Quinn-Harvie 1 Posted February 17, 2019 Share Posted February 17, 2019 That's a lovely BiFly Martin, they fly beautifully. Max - nice work Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted February 17, 2019 Share Posted February 17, 2019 Interesting Max. Glad to see that some of us are still experimenting instead of just going the HK route. Quote Link to comment Share on other sites More sharing options...
Max Z Posted February 17, 2019 Share Posted February 17, 2019 But there is a lot of HK stuff under the skin .... Quote Link to comment Share on other sites More sharing options...
Paulo Peres Posted February 19, 2019 Share Posted February 19, 2019 Hello all! I'm sharing my build of the Lilienthal 40 kit from Aeronaut. Excellent kit and it flies superbly. More pics available in my album Lillienthal 40 RC. Video of the maiden flight here: https://www.youtube.com/watch?v=iDE45fEZqB4 Edited By Paulo Peres on 19/02/2019 11:27:48 Quote Link to comment Share on other sites More sharing options...
Nigel R Posted February 19, 2019 Share Posted February 19, 2019 Nice BiFly! That 35 Pro should be bags of power. If I may, couple of words of advice - keep it moving on landing, and check out the stall nice and early - at height. I find best approach is 30% power and gentle dive, it is good and draggy with all that stuff sticking out and the thick wing section, so as soon as you chop throttle on the threshold, it will slow up pretty quick. Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted February 24, 2019 Author Share Posted February 24, 2019 What can you get for £10? Apparently, I bought this trainer for £1, a £5 Hitec 2.4rx and battery for total of £10! Flew it today, the engine ran perfectly, as it's probably not ran for years - a mk1 SC40 2 stroke. Quote Link to comment Share on other sites More sharing options...
cymaz Posted February 24, 2019 Share Posted February 24, 2019 Perfect day for it....looking at the windsock Paul Quote Link to comment Share on other sites More sharing options...
Don Fry Posted February 24, 2019 Share Posted February 24, 2019 The sad bit is you can get that for a tenner. That's a perfectly decent trainer.. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 24, 2019 Share Posted February 24, 2019 Today was perfect. I was able to test fly my Li'l Cub Stol aircraft. It flew perfectly, completely viceless. Never tried to bite once while I was throwing it round at low level to get the flying shots. Quote Link to comment Share on other sites More sharing options...
Tony Richardson Posted February 24, 2019 Share Posted February 24, 2019 That's an interesting looking little model Peter, is it a free plan? i've lost touch after I moved and no longer get the magazine. Quote Link to comment Share on other sites More sharing options...
Tim C Posted February 24, 2019 Share Posted February 24, 2019 Super interpretation of the original, what did the final auw turn out like? And what size motor and prop is needed? Quote Link to comment Share on other sites More sharing options...
Tim C Posted February 24, 2019 Share Posted February 24, 2019 Super interpretation of the original, what did the final auw turn out like? And what size motor and prop is needed? Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 24, 2019 Share Posted February 24, 2019 Hi Tony, hopefully it will be sometime. Tim, it uses a PO-3535-870 motor turning a 13X6 via a 30 amp ESC and a 3 cell battery. Weight about 3 lbs. Span 57" area 541 sq. in. Quote Link to comment Share on other sites More sharing options...
Geoff S Posted February 24, 2019 Share Posted February 24, 2019 Posted by Paul Marsh on 24/02/2019 18:18:58: What can you get for £10? Apparently, I bought this trainer for £1, a £5 Hitec 2.4rx and battery for total of £10! Flew it today, the engine ran perfectly, as it's probably not ran for years - a mk1 SC40 2 stroke. Why am I not surprised, Paul? You could have bought something from me this morning. As you say it was a lovely day and as we only live about 5 miles from the swapmeet venue and we were home before noon I opted to go for a shortish bike ride and covered 30 miles. I can't believe I was wearing track mitts rather than gloves in February. Just charging my batteries for flying tomorrow. It's tough being retired! Geoff Quote Link to comment Share on other sites More sharing options...
Geoff S Posted February 24, 2019 Share Posted February 24, 2019 Posted by Peter Miller on 24/02/2019 20:27:57: Hi Tony, hopefully it will be sometime. Tim, it uses a PO-3535-870 motor turning a 13X6 via a 30 amp ESC and a 3 cell battery. Weight about 3 lbs. Span 57" area 541 sq. in. You're learning, Peter Interesting that I had a few 2 stroke engines to sell at a swapmeet this morning but everyone searching through them was looking for 4 strokes which IIRC are you first love. A very interesting and unusual looking subject. A nice size and very light with it even though it doesn't score very highly for beauty (and that's not adverse criticism btw) Geoff Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 24, 2019 Share Posted February 24, 2019 Hi Geoff. Oh yes! The secret is to know who to ask!!!. I jst phone George at 4-Max and he tells me what to use and the modelflies perfectly No, far from beautiful but I like the oddballs. If you want your mind blown, the link shows the full size in action **LINK** Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted February 24, 2019 Share Posted February 24, 2019 Posted by Peter Miller on 24/02/2019 18:43:05: Today was perfect. I was able to test fly my Li'l Cub Stol aircraft. It flew perfectly, completely viceless. Never tried to bite once while I was throwing it round at low level to get the flying shots. Well Doesn't that look a cutie . Nice one Peter Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.