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Lindsay Todd

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Everything posted by Lindsay Todd

  1. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  2. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  3. Lindsay Todd
    Kits and plans often seem to be marked on the safe side, if in doubt or even always check out with a CG Calculator as above. I never trust what a plan or instructions say and always double check it for myself. for 90% of airframes this is really pretty basic thing to do. After initial flights you can then tweak for personal preference if required and of course different airframes and styles of flying will required differing set ups but for general sport flying 25% is usually really safe and 25-30% not unusual. Linds
  4. Lindsay Todd
    I would not like to say its cheating but personally i like the challenge of flying the model and not just seeing the model fly. I assume comps like the Nats still dont allow gyros in scale and F3a, lost track a bit but would be sad in my view if they are now allowed, just my opinion but i can see there uses but only ever owned for my helis. Linds
  5. Lindsay Todd
    Hi Leccyflyer, yes wings built with 6inch wide bandage although i always us pva rather than epoxy as i prefer not too have a hard edge on the veneer that could form a shear edge but i did let in a channel and pockets for mini servos although these are all 3mm hard balsa lined with attention to grain direction. The veneer is only very thin and as Bob say's it could be down to some degradation of the adhesive over the years but the the fact is when i put pressure on the wing from the underside there is a compression on the veneer on top that indicates a line some 9 inches away from the center line on each side. it only flex's a very small amount so the jury is still out as to if this is actually an issue but i just don't like seeing it so i think i have mentally now decided to drop in a spar just to be on the safe side as it is not that big a job and once done you will never know so its all about piece of mind. Linds
  6. Lindsay Todd
    Well Gnatty was ready for flight so with the weather holding good i decided to get the maiden out the way and then assuming all good finish of the decals etc later. Pleased to say generally hugely successful, in fact the cg was a little too safe so will adjust by moving the battery back a little. The OS46 LA never missed a beat on the 11x5 graupner prop and even without a stearable nose wheel tracking was not a problem. Full chat but running just a little on the rich side as the motor has not run for years, wheels just about to leave the ground Steady as a rock on climb out Classic Gnatty Farnborough pass Just a lovely model to fly and has not lost any of its charm The model was a delight to fly. A few minor tweaks to make to the CG and a look at the wing just to make sure all is ok as there was some evidence of some flex in the top film covering but i suspect this may have been caused by how the wing was packed for transport. causing some pressure but with foam wings its difficult to know so i would rather go overkill and insert a ply spar than have a wing failure. Its been a long time since i had a model with a foam wing but this should only take a couple of hours to cut a slot cut a ply brace, glue in place a pact the covering up and i will do this now with the some extra finishing touches to complete. a Good day. Linds
  7. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  8. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  9. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  10. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  11. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  12. Lindsay Todd
    Excellent pics of this classic. Simon noted your point re tailplane, Mine actually has a spruce spar let in although i have not heard of any issues before. Motor is an OS46LA so should be fun. Linds
  13. Lindsay Todd
    Hi Nigel., No Flaps in the end, it really does not need them although fitment would be easy enough and gives you another element to play with. The wing area / loading and washout makes it a pussycat. Linds
  14. Lindsay Todd
    The Leicester Model Centre Gnatty. I don't recall a thread on these classic 80's kits, was certainly popular at our club at the time, i had the Gnatty Sports which featured a straight wing but always wanted the Super Gnatty which featured a swept anhedral wing and finally got my hands on an old kit a couple of years ago and have been putting it together a little bit at a time since. The kit featured a fibreglass fuselage and foam wing with sheet tailplane and loosely based on the Folland Gnat, ok very very loosely based but has an undeniable jet like character. The part kit i acquired had no plan or instructions so has been put together based on memory and examination of on line photos, i have added a few personal tweaks such as the wing tips but has been a fun project and now very close to its maiden flight so thought i would post a few pics. Linds
  15. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  16. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  17. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  18. Lindsay Todd
    Super job Danny, at that weight this should be really nice. Linds
  19. Lindsay Todd
    A few more flights now and even an entry in a local fly in comp scoring a 2nd place in a pseudo scale schedule makes this design one of my favorites so stable yet maneuverable. It has now performed all sorts of aerobatics and capable of just about anything other than 3D hovering. What has surprised me is the accuracy with which it can be flown and with the slow speed handling you can fly it a very tight area. The rudder has great authority without any pitching issues making side slip and flat turns a doddle. Even in quite a breeze the model remains stable and not bumped around when others remain grounded. Anyway a couple more pics from today. Video to follow when we get a chance. Linds
  20. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  21. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  22. Lindsay Todd

    Lindsay Todd posted a gallery image in Member Albums

  23. Lindsay Todd
    Quite right Ron missed that but I'm with you re solution. Linds
  24. Lindsay Todd
    Just a thought having read through the comments, whilst elevator linkage, servo failure and tail plane junction all valid i have not read any mention of the main wing stiffness or lack of. Some years back i saw a foam glider wings quite literally rotate as if someone had grabbed the wing tip and twisted it back whilst at speed and this has all the makings of a similar situation given the power on loop scenario. wing twist is a can be deadly when extreme or can provoke a range of pitch and roll reactions that are difficult to predict and define. I expect the solution ultimately is flying within the flight envelope for the models structure however checking how easily the tips can twist may offer some further insight and possible cause. Linds
  25. Lindsay Todd
    Thanks guys, plan already with the ed although i suspect any publication would be towards the end of the year earliest i would think. Will get some more pics and video next time out. Linds
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