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  2. GuyB
    Hi I use an Aurora 9 which I love and am invested in re receivers etc. It does not have voice but beeps every minute. I quickly lose count of the beeps
  3. StraightEdge

    F3-RES UK Competition Interest

    StraightEdge replied to Neil Stainton's topic in Thermal and F3J

    Thanks Martyn - I only got confused because Jon W had mentioned "70m" earlier, hence my question.
  4. StraightEdge
    Guy, I meant to reply to this earlier: why not set your TX timer to give a voice-readout every minute? Jon
  5. Slopenut84

    Auri F3k dlg x 2 for sale!

    Slopenut84 replied to Slopenut84's topic in For Sale / Wanted

    Hi Ian , Yes the pink Auri is still available
  6. martynk

    F3-RES UK Competition Interest

    martynk replied to Neil Stainton's topic in Thermal and F3J

    It's on each challenge OP: 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds
  7. Ian ashdown

    Auri F3k dlg x 2 for sale!

    Ian ashdown replied to Slopenut84's topic in For Sale / Wanted

    Is the pink Auri still available?
  8. StraightEdge

    F3-RES UK Competition Interest

    StraightEdge replied to Neil Stainton's topic in Thermal and F3J

    Hi Martyn and Jon Thanks for the replies, most informative and helpful - and completely happy to work to 20secs and/or 60/70m (which is it?). By the way, my current launches with the 320g PuRES do vary: no activity then say 50-60 meters, if some ambient wind (and I launch almost vertically and work the line on the way up without fouling things) then 60-70m, if into a boomer then have recorded 80-90m. I'm not fully sold on going electric (love the simplicity and low cost/complexity of bungee) but thinking about it... As I said earlier, the primary advantage of electric is that it w
  9. Today
  10. Graham Lorimer

    2nd 2021 2m F3-RES, F5-RES 14 day Duration Challenge

    Graham Lorimer replied to martynk's topic in Thermal and F3J

    I will always try to circle out of the indicated lift, and to complete the circle back into where I think the center of the thermal may be, potentially that reduces the energy and forward momentum loss, something you really do not want with a lightweight model. Just my thoughts. Graham
  11. martynk
    No, the other way round, if one wing stalls and drops I turn into it rather than away as the model is trying to turn in that direction anyway
  12. martynk
    Regarding thermalling, my experience is with F1A glider which normally have the inboard wing flying at a slightly higher angle of attack. In a thermal or up current, the inboard wing will stall sooner, drop and the model will turn sharply into the stall. Mined ewes, free flight gliders have much smaller vertical stabilisers and therefore less yaw control/damping. I really need to get out and fly more..
  13. Phil.Taylor

    Full-size - gravity launch

    Phil.Taylor replied to Phil.Taylor's topic in Other Soaring

    Looks like ridge lift to me.
  14. SoggyBoots

    Full-size - gravity launch

    SoggyBoots replied to Phil.Taylor's topic in Other Soaring

    Very interesting, and is this into ridge lift or do you seek thermals from there? or is it just a quick run to the bottom and start again?
  15. GuyB
    Sounds logical. I definitely lose more height trying to turn into it than going round
  16. Jef Ott
    T-tail should be a good config for height limiter cut off models, because the Bernouli effect of the faster air under the tail requiring down trim during the power-on phase (so it should kill the stall itself when the motor cuts). Does anyone use height limiters now?
  17. Andy_B

    Full-size - gravity launch

    Andy_B replied to Phil.Taylor's topic in Other Soaring

    nice one Phil ....superb
  18. steve knowles
    Radioglide 2021 - 41st Festival of Flat Field Soaring May 29th to 31st 2021. Arrangements are being made for Radioglide 2021 to take place at the BMFA National Flying Centre, Sewstern Road, Buckminster, Grantham, NG33 5RW All events are open entry, however, competitors must be BMFA members. F5J will take place on Saturday May 29th & Sunday May 30th and will be run as a two day event counting towards BARCS & BMFA leagues and will be a Team Selection event. The Radioglide F5J Champion will be the winner of the two day event. There will however be an award for the best perf
  19. Graham Lorimer

    2nd 2021 2m F3-RES, F5-RES 14 day Duration Challenge

    Graham Lorimer replied to martynk's topic in Thermal and F3J

    I have a Hacker A10-7L motor / gearbox combination. Very lightweight. On a 3S battery it draws 9.5 amps. Graham
  20. StraightEdge
    Not hugely experienced yet but have so far found the following: by following the turn started by the thermal kicking one wing up, speed and smooth flying is maintained and one gets quickly round back into the thermal, with the whole model then lifting nicely as you enter it squarely on. Cranking the model the other way - ostensibly the shortest route - seems draggier and risks a slower-speed stall just when you don't want it.
  21. oipigface

    Epoxy or Polyester Resin

    oipigface replied to BrianL's topic in Builders Workshop

    Bladders can be useful as well. I’ve used bicycle tyres in the past.
  22. satinet

    Epoxy or Polyester Resin

    satinet replied to BrianL's topic in Builders Workshop

    Sometimes the dust from the sanding can cause a problem. Get rid of as much dust as you can. While less glue is better, I find it's better to brush some epoxy over the area the cloth is going to go before applying the cloth. Pressure is really the key to getting a good stick though. Heat helps but it makes it go off quicker it doesn't help if the mechanical adhesion isn't good. I use peel ply which allows you to uses layer of tissue or similar to absorb epoxy between the cloth and whatever is giving you the pressure (tape, clasps etc). Doing the inside is harder. Outside yo
  23. Nicholls
    Colin is continuously experimenting most things from boom lengths to tail types. Here is his T tail version as flown in the Kent Interclub/ Bartletts competition at Gravesend on Sunday 18th April 2021. Looks especially magnificent at higher altitudes where it was most of time. He won! Photos by Mike Connell
  24. Whitmore
    Good point Graham - I hadn't thought of the over weight/overthrust option. What motor/battery do you have in your Purito? In theory the wing nearest the thermal will be experiencing greater angle of attack and so roll away from the lift. I think Martyn is describing where that AOA is so extreme as to cause asymmetric stall then wing drop - which would have the model to appearing to roll towards the thermal. A well designed wing should roll away in most circumstances. Either way you're seeing an indication of where the lift is and you need to get into it. If the roll is extr
  25. Phil.Taylor

    Full-size - gravity launch

    Phil.Taylor posted a topic in Other Soaring

    How to launch a glider - just roll it down the hill ! (roll the vid to 1:00 if you're feeling impatient...) I've flown full-size bungee launch off the Long Mynd, but this looks even more fun Phil.
  26. GuyB
    So if the left wing drops you turn right on the basis that the thermal has pushed up the right wing abs turning right should take you into the lift? whereas I do the opposite but probably circle round into it
  27. tonym
    Forecasts looking OK through weekend, usual thing, I'll make a go or no-go announcement around 6pm Saturday.
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