Anthony Scott 2 Posted January 24, 2018 Share Posted January 24, 2018 Posted by Denis Watkins on 24/01/2018 07:39:07: Posted by john stones 1 on 23/01/2018 23:46:27: Bit unkind to call it sluggish maybe Denis, mine was a joy to fly....cue the sarky comments on my looks. I was trying to be diplomatic John, for the young lads comment that this was slow in the roll But as you say, they are a joy to fly, and solid, with knock off wings in the event of an ungainly arrival These are great to build too Young lad!! I am flattered, I think, mine is the only slow roll rate comment. However I remember when this model came out & PRECEDENT is spelled the same way now as it was in the late 70s. Tony Quote Link to comment Share on other sites More sharing options...
trebor Posted January 24, 2018 Author Share Posted January 24, 2018 I blame this iPad. Quote Link to comment Share on other sites More sharing options...
trebor Posted January 25, 2018 Author Share Posted January 25, 2018 Well if your building a new one make sure you can get the fuel tank out for repairs as I had to adapt this with my rotary sanding tool, you can see its had a fire at one point under the fuel tank on mine. It also had a cracked wing dowel mount that now has a new bit of ply and a chunk of hard wood behind it for support. I had to glue in small triangular wood stock to support the thin ply at the top. The other strange thing was the tail wheel, all the weight was forced on the rudder hinges so I soldered a washer on the wire and packed out the mount with 3mm ply. Maybe the rudder was not cut for the steerable tail wheel wire correctly. This is my first attempt at mechanical differential ailerons, I went for maximum 20mm up, 10mm down to start off with. The servo seems to be mounted in the wing rather high but not sure if its as per plan. Is this going to be enough movement ? Quote Link to comment Share on other sites More sharing options...
Denis Watkins Posted January 25, 2018 Share Posted January 25, 2018 Wow, you are a fast neat worker Trebor Lovely job of the tank and the tailwheel The servo does sit high, bit is due to finding a level spot on the wing camber You could screw up the aileron arm link adjusters nearer the ends of the wire to get a little more movements Can't wait till this flys Quote Link to comment Share on other sites More sharing options...
trebor Posted January 25, 2018 Author Share Posted January 25, 2018 I couldn't work out a better way to mount the tank as it was just jammed in with "LOTS" of foam before. the hole is too small to get my hand in. I,m trying to mount the receiver forward now as its still tail heavy. Failing that I might get a couple of longer snakes and move the servo tray. I tried to work out exactly where the servo holes should be and gave up, went for "drill a hole and see approach" Quote Link to comment Share on other sites More sharing options...
trebor Posted January 25, 2018 Author Share Posted January 25, 2018 Here is the tank that came with it, the thing was black and horrible might be the original. Had to replace the bung and pipes ! Quote Link to comment Share on other sites More sharing options...
trebor Posted June 28, 2018 Author Share Posted June 28, 2018 Well I eventually got it up the field with a repaired engine, I chickened out flying it and got Dave one of our club experts to take it up. Needed a bit of trimming mainly a lot of elevator to keep it flying, in fack it used up all the trim switch movement. It flew well inverted though and did most other things fine but the sink rate was rapid without lots of up elevator all the time. Something's wrong somewhere, I will post again later this morning where the CoG ended up. The laser 70 fs just managed it ok with a 12x6 prop maybe I'll try a 13" next and I will try to remember to take some pictures. Quote Link to comment Share on other sites More sharing options...
Nigel R Posted June 28, 2018 Share Posted June 28, 2018 Great stuff - good to hear the beastie is alive! I would have thought the 13x6 would be ideal. If the CG is correct it might be worth checking incidences if you can. My small one flies without much noticable elevator trim. BTW, in case you have yet to do so, investigate spin characteristics with plenty of height, be prepared to add power and opposite rudder to affect recovery. Quote Link to comment Share on other sites More sharing options...
trebor Posted June 28, 2018 Author Share Posted June 28, 2018 Thanks for the advise, just measured my CoG at 5" behind the centre point of the top wing so far. I did have to add 30g of lead between the prop and crankcase to level it. At the moment I have no way of checking the incidence. Dave rolled it and to me it seemed quite quick but he said it would be pushing it to loop it without a big run up Mind you its just running in new rings and mains at the moment, softly softly since I rebuilt it ( fingers crossed ) Ps, it did try to turn left on takeoff. Dont think theres much right thrust set on the engine. Edited By trebor on 28/06/2018 16:05:26 Edited By trebor on 28/06/2018 16:05:42 Quote Link to comment Share on other sites More sharing options...
Bobby Posted June 28, 2018 Share Posted June 28, 2018 Hi Trebor (Bob1), I thought she flew very well just a few things to sort out and then we will be able to do formation flying !!, I'm getting on well with the Pup conversion today with a bit of luck weather wise will see you next week. Bobby (Bob2) Quote Link to comment Share on other sites More sharing options...
trebor Posted June 28, 2018 Author Share Posted June 28, 2018 Thanks Bob, I dont know if I could concentrate flying at the same time as your sexy porn star wing covered job. Ps My eyes would wonder off. Edited By trebor on 28/06/2018 17:01:21 Quote Link to comment Share on other sites More sharing options...
trebor Posted July 6, 2018 Author Share Posted July 6, 2018 Here she is airborne ! Its a bit dark but its mine honest. Only problem now is the wheel hubs are falling apart due to old age. Had to get the superglue out but she is trimmed out with no lead on the front and the CofG is about 5.5" back. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted July 6, 2018 Share Posted July 6, 2018 Lovely. Quote Link to comment Share on other sites More sharing options...
Nigel R Posted July 8, 2018 Share Posted July 8, 2018 Excellent !Look good in the air don't they? I have a sneaky feeling the design is climbed from the old aeromaster bipe. Which is no bad thing.Edited By Nigel R on 08/07/2018 14:24:23 Quote Link to comment Share on other sites More sharing options...
samuel benham Posted October 3, 2018 Share Posted October 3, 2018 hi i currently have a bifly which i want to convert to electric anyone done this before thanks. plane has been sat for 15 years gathering dust now wanting to get it done also if plans are available anywhere thanks Quote Link to comment Share on other sites More sharing options...
Tony Bates Posted July 27, 2023 Share Posted July 27, 2023 In one of the pictures it appears to have no dihedral on the bottom wing. If I remember correctly there should be some. Quote Link to comment Share on other sites More sharing options...
Tony Bates Posted July 27, 2023 Share Posted July 27, 2023 I have a kit in the process of being built and new wings being made by the original tradesman who manufactured the kit. I had a model of this some 20 odd years ago and have been hunting for another for some time. Unfortunately SLEC have no plans to reintroduce the kit again as they no longer have the rights to do so. This is a shame as it was an enjoyable model to build and fly. 1 Quote Link to comment Share on other sites More sharing options...
Rich Griff Posted July 27, 2023 Share Posted July 27, 2023 Hi Tony, I read with interest that the tradesman who originally made the wings is making up a kit ? Might he have plans etc. for the MK1 hi boy ? I have been trying to locate an unstarted hi boy kit for ages with no success ( also a lesro 575 RC yacht ). Quote Link to comment Share on other sites More sharing options...
Nigel R Posted July 27, 2023 Share Posted July 27, 2023 (edited) Tony, if you cannot find bi fly parts or kit I suggest building an aeromaster. It's so very similar. And also an excellent flyer. Lower wing probably needs about 1" total dihedral. Edited July 27, 2023 by Nigel R 1 Quote Link to comment Share on other sites More sharing options...
Tom Gaskin 1 Posted July 28, 2023 Share Posted July 28, 2023 Another vote for the Aeromaster - I had the 'too' version (52" wingspan on both wings) which flew delightfully Tom Quote Link to comment Share on other sites More sharing options...
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