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CARF Joker build thread

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CARF Joker build thread

Old 03-25-2019, 05:14 AM
  #626  
Saillfish
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JP-1 it looks like the left main in hung up in your pictures. I enlarged the wheel well opening to prevent that when the gears shock linkage sticks and doesn't rebound all the way. Others have had it stick in the up position due to that.
Old 03-25-2019, 05:30 AM
  #627  
Dave Wilshere
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It was the brake cable swung around. There is enough wheel clearance.

Dave
Old 03-28-2019, 11:08 AM
  #628  
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Old 03-28-2019, 11:33 AM
  #629  
Dave Wilshere
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JetCat P-60 power. JR 28x, Powerbox Sensor switch, Graupner servos.
Looks awesome.
Old 04-02-2019, 03:20 AM
  #630  
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At Deenthorpe looked and flew superb

Alistair Powers
Old 04-02-2019, 08:29 AM
  #631  
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Got these from my Nikon


Old 04-02-2019, 07:28 PM
  #632  
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What a beauty!
Old 04-03-2019, 01:28 PM
  #633  
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How is the impression with a 60 in
( I almost install a Swin Win 60 in mine but finally I was advice to fly with a JM80 )
My Joker maiden is soon ...the snow here in Ottawa only start to melt!
Old 04-03-2019, 09:06 PM
  #634  
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It has enough power to have fun, the pipe is a little large, so it takes slightly longer to get on the step when you go full power, but it does reasonable size loops. 80-85N is probably optional power.
Old 04-03-2019, 10:29 PM
  #635  
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I'm checking my plane now. And if it all goes well, I will maiden her this Sunday! kekelala
Old 04-04-2019, 02:39 AM
  #636  
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Very nice
Old 04-04-2019, 04:56 AM
  #637  
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I am pleased to say Iv had 4 fantastic flights on my Joker now :-) power is ok for taking off on our grass strip with the Wren 70. It definitely needs full power and a nice take off roll, But once itís up and flying itís quite happy and quick enough, but I will change it probably for a 80/100. I miss the take off performance like I have with the 100 powered Xcalibur. But as dave has said itís a perfect follow on after the Xcalibur. The control throws are spot on too. Be interesting to see what the flight time would be with a 100 as Iím coming down at about 5 mins with 1/5 1/6 of a tank. I love this model :-)
Old 04-04-2019, 08:00 AM
  #638  
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Originally Posted by Tom ling View Post
... Be interesting to see what the flight time would be with a 100 as Iím coming down at about 5 mins with 1/5 1/6 of a tank. I love this model :-)
FWIW, I fly my Joker with a JetsMunt M100xbl and after 6 minutes land with about 20% fuel left.
Old 04-05-2019, 01:44 AM
  #639  
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Originally Posted by dccatl View Post
FWIW, I fly my Joker with a JetsMunt M100xbl and after 6 minutes land with about 20% fuel left.

Ahh thatís good, presuming once Iím in the air the 100 is working less than my 70 for the same speed. Thus saving fuel.
Old 04-05-2019, 07:13 AM
  #640  
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As always depends on throttle use. Our std models with P-100Rx versions have a timer set at 6 1/2 minutes and hopper tank has no air on landing.
I extended my fuel tank, so I fly 7.45, but have a larger balance shift as the tank can't go any further back!
Old 04-05-2019, 01:45 PM
  #641  
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Originally Posted by Dave Wilshere View Post
As always depends on throttle use. Our std models with P-100Rx versions have a timer set at 6 1/2 minutes and hopper tank has no air on landing.
I extended my fuel tank, so I fly 7.45, but have a larger balance shift as the tank can't go any further back!
thanks for the reply Dave, if I could get 6 mins with a 100 iíd be quite happy with that. The 70 does fly it beautifully but Iím not used to having to use full power on take off and climb out unlike my Xcalibur so I think il sell the 70 and find a nice 100.
Old 04-06-2019, 06:52 AM
  #642  
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Paul was flying his Swiss JetCat P-60 example off our local grass site today. Needed 100m (300') take off in light winds, but landed in 50m!







Old 04-08-2019, 12:24 AM
  #643  
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Finally maiden her yesterday. With the K85, she took off from grassed runway in less than 50 meters without problem. AUW was 9.06kg, full fuel (7.45kg dry, UAT full).

Very nice to fly, super slow she can get. Nose on the heavy side but safe. Floated and glided well without much throttle. No high speed flying was done yet on the 2 flights.

Factory's recommended aileron throws were very sensitive (to me). Green wing tips were a little harder to see against the blue sky.

Got into a little trouble with the flap-elevator mix, initial down elevator was 5% down on full flaps but she pitched up violently when flaps were deployed. Ended up with 18% down elevators (6mm down) on full flaps. Once dialed in in the air, she slowed down significantly with the flaps.

The 8mm crow seemed perfect as the approach was shorten and she dropped predictably when aligned to the runway.

kekelala
Old 04-08-2019, 12:41 PM
  #644  
Tom ling
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Well done on the maiden, pleased it all went well. I had to put more down mix in with my first flight too, Il have to try some crow on my next flight.
Old 04-08-2019, 01:02 PM
  #645  
Dave Wilshere
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We don’t run CROW...
Also if you have enough flap, less down mix is needed.
Old 04-09-2019, 01:40 AM
  #646  
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Hi Tom ling, sure and thanks!

Hi Dave, nose bobbed real high up with the flaps down at 80mm (factory setting). In the video I tried to land twice without flaps but she came in too hot. The last one was good, flaps had plenty of authority!


Kekelala
Old 04-09-2019, 03:08 AM
  #647  
Dave Wilshere
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80mm is about right, you always need flaps to land-especially with your high approach over buildings etc.
Whether you run just flap or Flap and CROW it's important that any slowing/delay is matched on the elevator going down and ailerons raising. Most
radios will allow you to match speeds on each condition.

Your final landing was great, nice and calm at touchdown.
Dave
Old 04-21-2019, 09:57 AM
  #648  
Dave Wilshere
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Great weekend flying my Joker, 10 flights. Paul B was having great fun with his P-60 powered Swiss scheme too.





Last edited by Dave Wilshere; 04-21-2019 at 09:59 AM.
Old 05-18-2019, 10:32 AM
  #649  
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Steve H performed the maiden flight of his Joker at Elvington today, he fitted a 100 size turbine, and the IGyro 3, it flew like it was on rails, completely drama free.
Old 05-19-2019, 06:57 AM
  #650  
Dave Wilshere
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Great day at my local grass strip flying my Joker, also did the test flights on Phil's red Joker, JR XG11, Powerbox iGyro 3e, Macgregor 2810 servos. JetCat P-100Rx fuelled by an MAP Bubble Trap.
six flights total and a happy owner after his four flights.










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