Robin Colbourne Posted October 17, 2017 Share Posted October 17, 2017 I had a FlyBoy, and as others have said, the take off was really tricky. A chap who did a lot of instructing at Chobham Common and had flow a number of them, reckoned that he cure was to extend the fin an inch on the front and the top to increase the area. My FlyBoy would be all over the place on take off, then dutch roll (wallow one way then the other) when airborne, until it finally settled down. Eventually I discovered the secret was not to use minimum power, and get the tail up as soon as possible. Most models you can just ram the throttle forward and off you go, but with the FlyBoy that will just result in ground loops. As I recall, mine had an OS Max 15 which seemed to be more than enough power for rudder /elevator flying. I've often thought about getting a part-built 'loft queen' FlyBoy, of which there must be hundreds around, and building it with a symmetrical section wing of double the normal thickness, ailerons and no dihedral. The end result probably wouldn't be pretty, but should be a lot more versatile. Quote Link to comment Share on other sites More sharing options...
kenneth payne Posted April 24, 2018 Share Posted April 24, 2018 Hi All, I have the fly-boy , can anyone tell me what flue works the engine and what percentage is it ? Thanks Quote Link to comment Share on other sites More sharing options...
Andy Meade Posted April 24, 2018 Share Posted April 24, 2018 *fuel Hi Ken, we'd probably need to know what make and size the engine is first I'm afraid. Quote Link to comment Share on other sites More sharing options...
kenneth payne Posted April 24, 2018 Share Posted April 24, 2018 ok will do and I can get back you tomorrow Thanks a mill Quote Link to comment Share on other sites More sharing options...
kenneth payne Posted April 26, 2018 Share Posted April 26, 2018 the engine that I have for my fly boy is Max 5 os 80 that what is says on the engine , dose anyone know what flue I should use and what percentage it is Thanks Quote Link to comment Share on other sites More sharing options...
Denis Watkins Posted April 26, 2018 Share Posted April 26, 2018 Hi Kenneth, has your motor got 2 glow plugs in the cylinder head? Edited By Denis Watkins on 26/04/2018 11:41:18 Quote Link to comment Share on other sites More sharing options...
kenneth payne Posted April 26, 2018 Share Posted April 26, 2018 Hi Thanks for getting back to me , I'm not sure, I can send you a picture of the engine Thanks Quote Link to comment Share on other sites More sharing options...
kenneth payne Posted May 1, 2018 Share Posted May 1, 2018 Hi All I was trying to send a pic of my fly boy engine but no look the engine is a os max-s 03 what glow flue percentage do I use and also where is the bust place for the balance of the plane thanks ken Quote Link to comment Share on other sites More sharing options...
Denis Watkins Posted May 1, 2018 Share Posted May 1, 2018 5% for your OS should be fine And balance the model along the main wing spar for starters Quote Link to comment Share on other sites More sharing options...
The Wright Stuff Posted May 1, 2018 Share Posted May 1, 2018 Hi Kenneth, The plan and instructions are on Outerzone, here. The balance point is marked on the plan. Quote Link to comment Share on other sites More sharing options...
kenneth payne Posted May 2, 2018 Share Posted May 2, 2018 Hi All, Thanks a mill for all your help I will get the fuel and get the balance right thanks ken Quote Link to comment Share on other sites More sharing options...
The Wright Stuff Posted May 2, 2018 Share Posted May 2, 2018 No problem, Ken, please keep us updated as to how you get on. Have you flown model aircraft before? That particular model, while it is a trainer, probably isn't the easiest to fly, so please let us know if we can help with any tips in any way... Quote Link to comment Share on other sites More sharing options...
kenneth payne Posted May 2, 2018 Share Posted May 2, 2018 Hi , Thanks I will keep you update on how I'm getting on , yep I have flown the model aircraft before but that was a long time ago when I was a kid with my dad in phoenix park , it had a little crash so I am repairing it now Thanks Ken Quote Link to comment Share on other sites More sharing options...
Fin 35 Posted January 25, 2020 Share Posted January 25, 2020 I acquired on of these little models last October (from somebody's loft of course) and fitted some radio gear over the Christmas holiday. Having read the posts here I was expecting trouble and I was not disappointed. The Dutch roll was hilarious. For safety I hand launched it and all was well until I touched the rudder. It's essentially set up as a freeflight model with a tiny fin to give it strong spiral stability at the expense of Dutch roll damping. I had a few flights with it in that state, with the CG at about 69mm for the LE (34%). It was quite aerobatic in it's own sweet way: loops, rolls, spins, outside loops, but all a bit hairy. I have just enlarged the fin and flown it again - what a difference. The Dutch roll is all but gone and it flies like a standard aileron trainer, although I still have to be gentle with the rudder. I've moved the CG back to 75mm (37%) and that's about as far as I think it should go. Down thrust and right thrust are both about 2 deg but I've fine tuned with throttle to down elevator at 5%. It has a nice glide on deadstick and doesn't require too much trim change with speed. Engine is a sweet little Enya 25 that is still running-in. All up weight is 1.33kg which gives a hefty wing loading of 61 g/dm2. Our strip is a bit long this time of year so I've not attempted a ground takeoff, but hand lunches need to be energetic at full power with a 10x5 prop. I definitely recommend enlarging the fin - mine has a height of 190mm with and average chord of 110mm, TE the same but much reduced LE sweepback. I extended the rudder height but not its chord. Oh, and I'm using 35MHz of course Quote Link to comment Share on other sites More sharing options...
Roy Thompson Posted November 21, 2020 Share Posted November 21, 2020 Sound like your having fun Fin with you’re Fly boy. I’ve only just come across this this thread, and have been smiling at some of the post. Back in the day I took my A cert with my FlyBoy and still have it packed away (you’ve guest it, in the loft) ready to fly again next time I’m feeling nostalgic😊 The rudder is very very powerful I’ll give it that. ROG need to be done with care! the less rudder input the better, I’ve parked mine upside down at the end of the strip many times😮. Once airborne I’ve always found it a peach to fly. Easy from a hand launch, low rates and a gentle push. Mine over the years has flown with an MDS 20 (the only good MDS I had), a geared speed400, a small contra brushless and now a standard brushless motor. Of course always on 35Mhz 😂 Quote Link to comment Share on other sites More sharing options...
Fin 35 Posted January 20, 2022 Share Posted January 20, 2022 Nice photo of a very elegant Flyboy Roy. I like the model in the background too. I've just posted some photos of my Flyboy2, made in lock down from a spare fuselage that I couldn't bear to chuck in the bin! I've been flying it since last year and it's quite a fun little machine, with ailerons and an Enya 30 up front. Quote Link to comment Share on other sites More sharing options...
Geoff S Posted January 20, 2022 Share Posted January 20, 2022 I think there was an unstarted Fly Boy kit up for sale on eBay last week. They certainly look better than the Hi Boy I did a lot of my learning on. Quote Link to comment Share on other sites More sharing options...
Cuban8 Posted January 21, 2022 Share Posted January 21, 2022 (edited) I've test flown a few Flyboys when I used to instruct newcomers many years ago. The models could be very variable in their flight behaviour depending on how well they were built (warps, alignment and CG ) or if they finished up a tad overweight. As a beginners model they needed to be built very well, which wasn't always the case in the hands of a tyro and things that one could 'get away with' on other models would be a big problem for the Flyboy. Excessive control movements would also make them very unpleasant to fly - just enough deflection to steer the model around is all you need and no more, at least for the first few flights to check things out. If they were built well or faults spotted and corrected beforehand then they weren't a bad model, but not one that I'd say was an ideal first time trainer. Not being a full house design, beginners thought they'd be easier to fly - not so. Unfortunately, that's exactly how many were sold by model shops (remember them!) as a bargain package with radio, starting equipment, flightbox etc. Character building if nothing else. Happy days. Edited January 21, 2022 by Cuban8 Quote Link to comment Share on other sites More sharing options...
Geoff S Posted January 23, 2022 Share Posted January 23, 2022 I thought I'd spotted one on eBay. It finishes tomorrow. Precedent Flyboy on eBay Quote Link to comment Share on other sites More sharing options...
Outrunner Posted January 23, 2022 Share Posted January 23, 2022 8 minutes ago, Geoff S said: I thought I'd spotted one on eBay. It finishes tomorrow. Precedent Flyboy on eBay £114 and still a day to go? Quote Link to comment Share on other sites More sharing options...
Rich Griff Posted January 23, 2022 Share Posted January 23, 2022 I loved my hi boy, first 3 channel model aeroplane I flew. Saved and saved and saved for the whole thing, kit, engine and radio gear. Still have the engine and radio gear in 4 channel wot4 ish shadow. Flew to he pants off them both. Got my "A" with the hiboy 3 channel. Wish I could find a hiboy, an unstarted kit would be wonderfull. I had templates for both hiboy and flyboy, but recon they are lost sadly. Saw a few flyboys at the club back in the day but cannot remember how they flew. I do remember "language" from a largish PAW engined owners one, they could not get the paw to run. Oz do the plan I believe, so over £100 for a kit makes no sense to me. But a hiboy kit does. Whoever buys it, enjoy... Quote Link to comment Share on other sites More sharing options...
Geoff S Posted January 24, 2022 Share Posted January 24, 2022 It went for £114, which is a pretty good price but I was surprised there were no more bids. More interestingly from my POV was a Balsacraft FW190 unstarted kit which sold for £156 because I have an unstarted Balsacraft Hurricane that I doubt I'll ever build so it's worth putting it up for sale. Geoff Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted January 25, 2022 Share Posted January 25, 2022 Hi Boy was good, Fly Boy not so good smaller version. Very twitchy and heavy for the wing area meaning they had to fly fast. As a trainer I'd only give the 1 out of 5 stars and a ? The Hi Boy with the recommended 40 up front I'd give 4 out of five and a ? as good to teach with I windy weather. I'd imagine the £114 kit sold on ebay will be stored away like so many kits ? Possibly a case of rose tinted specs ? Quote Link to comment Share on other sites More sharing options...
Rich Griff Posted January 25, 2022 Share Posted January 25, 2022 Hi Boy, solar Tex and painted, so was on heavy side. 3 channel, flew great, could fly "backwards" in a breeze, Inverted circuits, good dead stick landings. Flew the pants off it. I may have a picture of it somewhere... I don't need rose tinted specs for that one... Slec, how about kitting it ? Vintage model company, ditto ? Oh how I wish I could find an unstarted kit ! Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted November 12, 2023 Share Posted November 12, 2023 I was given just the fuselage kit at a swopmeet. Building the fuselage now, just the fuselage as im missing the wing and the tail. but building it so that its there and get enough details to build the wing/tail later on. Quote Link to comment Share on other sites More sharing options...
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