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Speed,Combat,Scale,Racing => Scale Models => Topic started by: victorss on November 22, 2006, 01:40:25 PM
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Attached is a picture of my first electric Control Liner.
The B25 is build from the 50S Berkley kit. The modifications include alterating the top turret. removing the bottom turret, replacing the glass nose with a solid one and adding the side and tail gun positions. It has 42 " wingspan and weighs 3.5 lbs. It has flaps and throttle control. Power is two PJS 800 3D rotating case motors, 2 Jeti 18 amp controllers and 12 320 MAh Thunder Power Li Ploy batteries, one set in each wing. It files well on 53" -- 57" overall -- lines. Control is through a Bill Young Handle. With Master Airscrew 8-6 electric prop the max speed is somewhere around 35 mph. With an PAC electric 8-6 prop the speed increases to about 39 MPH. It is presently being repaired after an accident in my shop.
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8) What no picture of the handle? Great job ,I have a old U-Control B-25 kit with a 47 inch span ,Should be about the same . Thanks for the Ideas .
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The Handle. It is by Bill Young and has five channels, two of which are only on/off. I have had this one for about five years and have had no problems.
Vic Gearhart
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It's beautiful! Someday I'm going to build a scale plane.
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Someday I'm going to build a scale plane.
Bob, that would be worth a 300 mile drive to see.
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HI Victor!
Another great looking scale plane! Like Darrell, I have a U-Control (Japanese kit) B-25 which is all framed up. Maybe that will be my "entrance" in to "electric"!
Bill <><
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8) I have yet to fly with the handle ,but some day soon ! ! Dude : how are you insulating those wires ?
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FYI: What I did with the B-25 was shoot for a target weight between 3 & 4 lbs flying weight. I used a computer program called ElectriCalc and selected motors, and battery pack size based on the program's calculations. The program was nearly right on the money with motor RPM and battery life. The speed is about 10 - 15 MPH less which I attribute to line drag.
When I used the same program for my second plane -- the TA 154-V3 --- the program failed miserably and the motor specs proved to be far more accurate. It is is somewhat overpowered.
My third electric plane is going to be a late model ME110 G with a 63" wingspan with retracts & flaps. I am shooting for a weight of 8-9 lbs.
Vic Gearhart
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I use Surflon fishing leader. Sevelon (I don't know if the spelling is correct) which is available where I live (So CA) can also be used. I have both lines insulated but only one needs to be. I have been fooling around with coating lines using a flexible urethane but I have not yet got it to where I want it. The advantage is that overall line diameter would be less and line drag less. It is my understanding that Brodak is going to or is stocking insulated line.
Vic Gearhart
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FYI
Brodak is now stocking insulated flying lines.
Clancy
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OH BOY! ! !
FYI
Brodak is now stocking insulated flying lines.
Clancy
8)
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Very nice B-25. Glad to see someone using electric power on a scale subject 8)