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Winter Project- The Wyvern


Ian F3F

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  There have been some fantastic sub 3m models, from the Wizard Compact to the unobtanium Caldera and of course the F3F world record was held by Lin Kuo Ping with the Needle 100 and a time of 24.58.  After meeting with Dieter Perlick in the summer and seeing his latest Caldera design, combined with a few drinks with the other members of Team Saker- time to take the plunge- The 2.65m Wyvern test model arrived in December

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  I still love the Saker and I’m not trying to make something better- but different.  I’ve always had a love for smaller models and the Wyvern’s design is (I hope) a combination of the aspects of the Saker and 2.5m Falcon that I love the most.  The Wyvern also contains a number of aspects of aerodynamic evolution.

  Setting up a new design is a fantastic way to take on a new challenge.  This winter has seen me braving just about the best and worst conditions I could find in order to test my new Project.-.  Slope dog definitely preferred the lighter wind days but the Wyvern lapped up all conditions. 

  Although a model’s performance is influenced by many factors other than the wing- this is an area that has seen some changes.  Shape and camber details are more difficult to see by the naked eye but when you try to fit a 10mm servo in the aileron it becomes more obvious.  A wing thin enough to cut through the air but with enough camber to respond well to snap flap was an ambitious goal.

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  The fuselage retains the ballast tube and sculped sidepods of the Saker.  Ballast won’t be an issue but there is now room in the joiner for 600g of additional weight in case you really really want to go heavy.

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  I’m sure there’ll be more updates.

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Having seen the Wyvern on Mickey's in light crossed conditions it certainly looks to have both pace and agillity.

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Joe Cubitt

JP insisted that I pop up to Whitesheet just before Christmas and along with Ian I watched him slice the air up with this extraordinary little beast. With our JP on the sticks, it looked very locked in and gained pace with every lap. I want one!. The old adage of, if it looks right, it’ll fly right certainly applies here. It has some quirky scallops on the fuz and a well balanced plan form, I like it. It’s certainly a model that will entice me back into competing again. I have to point out, that I’m not connected to the designer/ retailer in any way.

other than extended family🤣

Edited by Joe Cubitt
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Trying out some small servos, rather over complicated servo frame and linkage. Frames are very well engineered but a big fiddly for my fat fingers 

JP

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Edited by Jep
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Well I managed a quick first fly today, very low conditions on the S/W bowl at the Longman. Had a little play with settings but need a bit more air to get these right, but it did feel very easy to fly 

JP

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Well had a good ish session on Sunday morning befor the rain, have to say this is a very well mannered plane.

it feels very quick plus easy handling, aerobics where no problem as was it’s handling with crow. The slope I was using has very smooth sea air so this helped, next an inland site to judge the plane there. So far no real issues, I think Ian has another great glider to add to his list 

JP

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  • 3 weeks later...
Ian F3F

Sorry no pics but fun to fly the Wyvern today at whitesheet.  Good fun to see JP and his Wyvern in the same  variable air.

  The Wyvern certainly sniffed the lift out well for me and turned it into fun.

 Champ of champs next weekend then

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  • 4 weeks later...

  If last week was winter flying in the storms, this week was thermalling on a spring day.  Each one with the Wyvern and I've enjoyed every flight.  The Wyvern does keep putting a smile on my face.

  I think that I've started to settle on the model set up.  The CG can be moved around a great deal to give different styles of turn but she's has remained well dehaved.

 

Ian

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