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  1. Pete in Northiam

    Flutter

    Having seen several F3-RES gliders hit wing flutter on the bungee and watched as tailplane flutter led to the sad demise of an F5-RES under power on Saturday, I thought it was about time I got past my own limited understanding and read more about the causes and cures. I found the link below a useful summary of the physics of causes and fixes. If you want to skip the maths, look at the pictures then jump to page 9 for a summary of the problem and possible fixes. I've posted this to the Facebook group too as I know not everyone is on BARCS. https://www.kimerius.com/app/download/5784128815/Aerodynamic+Flutter.pdf
  2. The final table. Double click to make it legible. The controversy... 2 or 3 years ago, when I first published the rules, I stated that it was the top 7 results to count. In the event of a draw, the 8th would be included etc. However, when I updated the rules last year, I didn't include that paragraph so technically, all 12 challenges count. This makes Graham Lorimer the winner who scored in every challenge. That deserves a medal simply for perseverance. However, if only the highest 7 results counted then CirrusRC would have have won. I will open a new posting for 2022 rules discussion but I would like to thank all those who participated for making the event so worthwhile. Give yourselves a big clap. So, well done to Graham, A very big well done to CirrusRC for that mammoth 2 hour plus flight - that will take some beating I would imagine And finally well done to Anthony who started later but climbed steadily through the ranks to finish 3rd. Only virtual trophies with virtual champagne awarded. You can get yourselves virtually drunk. Best wishes
  3. A placeholder for the 12th 2021 F3-RES/F5-RES Combined 14 day duration postal. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The 14 day clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre wingspan glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. All scoring flights must start with a hand release from Ground Level No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  4. A placeholder for the 11th 2021 F3-RES/F5-RES Combined 14 day duration postal. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The 14 day clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  5. A placeholder for the 10th 2021 F3-RES/F5-RES Combined 14 day duration postal. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The 14 day clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  6. Neil Stainton

    F3-RES UK Competition Interest

    For those that don't know F3-RES is a new high-start launched woody 2m RES glider class that originated in Germany and Austria that is becoming very popular internationally. For more info see this RCGroups F3-RES Resources thread and the other threads marked F3-RES in the RCGroups. The kits are easy to buy from European retailers. The benefits of these models and the proposed event over alternatives are - Low cost - Quick building woody models - Requires building as well as flying skills - Easy to fly RES (rudder-elevator-spoiler) models - Simple task - 6 min flight in a 9 min slot - Standardised weak hi-start so not a power race - Low launch altitude (60m-110m depending on the field/high start length) I am thinking of running a series of competitions, probably from the Pillerton Hersey field in Warwickshire, and would like to know if there is any interest in this from this gliding community. BTW I will develop a set of rules closely based on the German rules so molded composite 2m models will not be allowed. Please post to this thread if interested. Neil.
  7. A placeholder for the 7th combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The 14 day clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  8. A placeholder for the 6th combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  9. A placeholder for the 5th combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  10. A placeholder for the 4th combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  11. A placeholder for the 3rd combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices are no longer permitted. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  12. A placeholder for the 2nd combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices are no longer permitted. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  13. A placeholder for the 1st combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone may enter with EITHER 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. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the towhook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices are no longer permitted. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
  14. A placeholder for the 8th 2M Hi-Start 14 day duration Challenge for 2020 Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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. Fly safely! No slope soaring NOTE - Entries for this challenge will not be accepted while there is an England lockdown in progress.
  15. Hi all Looking for feedback. I am planning to run the F3-RES league in 2021 (if that is OK with you lot ) However, I would like to make a few changes to clarify and hopefully encourage participants. Firstly, I would like to restrict entry to any sub 2m class glider providing it is not fitted with camber changing components - i.e. flaps or ailerons. At this stage, we will continue with no material restrictions - i.e. all foam models would be permitted although models with fully moulded carbon or glass reinforced skins would not be permitted. Models to F3-RES rules would of course be permitted. As all models entered this year have been F3-RES, I cannot see a problem with this clarification point. I am suggesting a couple of alternatives to the current league scoring method and also perhaps the format of the event. Personally, I would like to see the event to move to a more traditional contest format instead of the one big flight. In all cases, league scoring would be 10 points for 1st, 7 points for second, 5 points for 3rd then 4,3,2,1 points for the next 4 places. Flights will complete when the model lands in the launch field or within 300m of the launch point is no field boundary is defined. Option 1. We continue with the same single reported flight with no max. Option 2. A competitor will make 3 flights (launches) within a 60 minute launch window. The flight maximum will be either 10 minutes or 5 minutes (to be debated). There is no penalty for over-running the flight maximum but the flight score is capped at 10 (or 5) minutes. The objective is to promote consistency. The competitor must declare the start of the launch window (the first launch) and the launch times of the 2nd and 3rd flights. For example, a 10 minute flight will score 600 points, a 9:55 flight will score 595 points and a 10:15 flight will score 600 points. Option 3. As per option 2 except that time is deducted for flights exceeding the flight maximum. For example, a 10 minute flight will score 600 points, a 9:55 flight will score 595 points and a 10:15 flight will score 585 points. Option 4. A competitor makes consecutive flights starting with a minimum 2 minute target, if he/she is successful then attempts a 3 minute target. If successful, he/she attempts for a 4 minute target and this continues with 1 minute increments until he/she fails to achieve the next full minute. The reported score would be the last full minute successfully achieved plus the failing score. So, for example, if a competitor achieves 2 minutes, then 3 minutes then only 1:55 on the 4 minute attempt, his score would be 4:55 (3 +1:55). All flights to be taken with a 2 hour launch window. All flights to be made consecutively. We are all aware that these models, on a calm day with good lift, are capable of excellent thermalling capability. I would like to move away from the emphasis of the one big flight and adopt a more contest orientated format for the event. In all cases, it requires integrity on the competitor but as the only prize on offer is improved self esteem and awe of your fellow competitors then I cant really see a problem. Can we have a discussion please? Thanks Martyn
  16. A placeholder for the 7th 2M Hi-Start 14 day duration Challenge for 2020 Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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. Fly safely! No slope soaring
  17. A placeholder for the 6th 2M Hi-Start 14 day duration Challenge for 2020 Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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. Fly safely! No slope soaring
  18. A placeholder for the 5th 2M Hi-Start 14 day duration Challenge for 2020 Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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. Fly safely! No slope soaring
  19. A placeholder for the 4th 2M Hi-Start 14 day duration Challenge for 2020 Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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. Fly safely! No slope soaring
  20. A placeholder for the 3rd 2M Hi-Start 14 day duration Challenge for 2020 Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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. Fly safely! No slope soaring
  21. A placeholder for the 1st 2M Hi-Start 14 day duration Challenge for 2020 Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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. Fly safely! No slope soaring
  22. A placeholder for the 2nd 2M Hi-Start 14 day duration Challenge for 2020 Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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. Fly safely! No slope soaring
  23. martynk

    RCSD-F3-RES Article(s)

    Great article in RCSD last month about F3-RES contest in the US of A www.rcsoaringdigest.com/pdfs/RCSD-2018/RCSD-2018-02.pdf
  24. Hi all Sorry this is a bit late but I have a had a spell in hospital and currently recuperating I am happy to run the 2m/F3-RES postal again this year. Same rules that we have used for the past 2 years,. I'll create a starter post after this. -- This is a for fun challenge, anyone with a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Launches must be made from the standard Challenge Hi-Start bungee. Flight times begin when line releases from the towhook and the model must land in the field for times to count. While the object is to encourage F3-RES types, any model up to 2 metre span may be flown (F3-RES, foam, full house aileron mouldie) but please state the type of model with your 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 bungees may be used. Fly safely! No slope soaring
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