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Old Apr 04, 2010, 08:26 PM
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Canada, ON, Thunder Bay District
Joined Apr 2007
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Sig 1/5 Scale J3 Piper Cub Kit on Floats

I built this plane as my first kit build. It took a long time but I really enjoyed it. I went a little over board on lightening the but I managed to save just over a pound on the pair of 60 size Great Planes floats. The Cub flies nicely with or without the floats. Very satisfying project. Electric power to boot.

Sig 1/5 Scale J3 Piper Cub Kit on Floats
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Old Apr 04, 2010, 11:36 PM
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Twin Cities, Minnesota
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nice..
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Old Apr 06, 2010, 04:24 PM
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very nice build!
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Old Apr 06, 2010, 07:19 PM
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I enjoyed the build very much. Don't know if I could find that much time to spend on another build like this but I smile when I think, did I really build that. Flys great too even with floats. Thanks, happy you liked it.
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Old Apr 06, 2010, 11:36 PM
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Knoxville, Iowa
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Fast Guy,
That kit is designed for gas engine. How did you do the lightening? Did you just cut away wood or re-design the kit. Did you use carbon fiber?
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Old Apr 07, 2010, 07:44 PM
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Originally Posted by Steve Ebel View Post
Fast Guy,
That kit is designed for gas engine. How did you do the lightening? Did you just cut away wood or re-design the kit. Did you use carbon fiber?
I built the kit as per instructions as it was my first attempt at a build and that was challenge enough. I did fill the firewall with holes to lighten that and provide cooling to the ESC and battery. I also had to replace the tail stay wires with carbon fiber to lighten the tail and balance the plane. I put most of the effort into the floats shaving just over a pound off their total weight. There is lots of potential to make this plane lighter by the experienced builder for electric power even though it has the capacity to carry some serious wattage that can easily make up for the extra weight.
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Old May 05, 2010, 01:25 PM
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what covering material did you use? what motor/esc/battery?
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Old May 05, 2010, 04:43 PM
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Originally Posted by TexasClouds View Post
what covering material did you use? what motor/esc/battery?
I used Top Flite MonoKote Cub Yellow fo the covering.
Motor: Great Planes Rimfire .80 50-55-500 Outrunner Brushless
ESC: Castle Creations Phoenix-80 Brushless ESC
Battery: FlightPower EON 30 LiPo 6S 22.2V 3300mAh 30C
Hyperion CX 25c 4000mAh 6s 22.2V
Prop: Xoar 16x6 Sword

Hope this helps.
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Old May 05, 2010, 04:50 PM
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Originally Posted by Fast Guy View Post
I used Top Flite MonoKote Cub Yellow fo the covering.
Motor: Great Planes Rimfire .80 50-55-500 Outrunner Brushless
ESC: Castle Creations Phoenix-80 Brushless ESC
Battery: FlightPower EON 30 LiPo 6S 22.2V 3300mAh 30C
Hyperion CX 25c 4000mAh 6s 22.2V
Prop: Xoar 16x6 Sword

Hope this helps.
thanks.

still amazed at your end result...
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Old May 11, 2010, 11:37 AM
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Quote:
Originally Posted by Fast Guy View Post
I used Top Flite MonoKote Cub Yellow fo the covering.
Motor: Great Planes Rimfire .80 50-55-500 Outrunner Brushless
ESC: Castle Creations Phoenix-80 Brushless ESC
Battery: FlightPower EON 30 LiPo 6S 22.2V 3300mAh 30C
Hyperion CX 25c 4000mAh 6s 22.2V
Prop: Xoar 16x6 Sword

Hope this helps.
Hey LastGuy...

I'm thinking of going electric on this same kit.....
If you were doing it over again, would you improve on your present set up, go to Gas/Glow, or just do it the same again?

Is this a real top notch....... good elec set up?
How long is flight time?
What about sound vs 4cycle?

Thanks
Andy
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Old May 11, 2010, 06:17 PM
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Canada, ON, Thunder Bay District
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Originally Posted by Grits View Post
Hey LastGuy...

I'm thinking of going electric on this same kit.....
If you were doing it over again, would you improve on your present set up, go to Gas/Glow, or just do it the same again?

Is this a real top notch....... good elec set up?
How long is flight time?
What about sound vs 4cycle?

Thanks
Andy
This kit is way over built for an electric and an experienced builder could lighten it up for sure. My plane ended up being 7 1/4lbs AUW with wheels, which is close to a glow-powered cub. I live on a lake and have lots of neighbors so electric means early morning flights without annoying anyone. As for sound the power system can be almost silent to sounding really cool under full power when the prop starts to roar. Does it sound like a 4 stroke? No, I like the sound it makes much better but thatís just me. I would build another electric if doing it again. Electric is just getting better and better. Batteries are making huge advances. Getting about 12 to 15 min. on a 6s 5000 mah battery. About 5min. longer than my attention span. I chose the Rimfire motor because I have had good success with them and they are a mid priced motor. The Castle Creations ESC is very good and the Rimfire works well with it. I just got some new generation Lipos (Hyperion G3) and without changing anything but the battery my power system jumped from 48a/ 900watts (FlightPower EON) to 69a/1600watts with the Hyperions. The Cub would almost hover on 900watts so 1600watts should be interesting. This is within the limits of my power system but I haven't had a chance to try it out yet.
One change I made to better balance the plane was move the rudder and elevator servos ahead to about mid door. This allows the battery to be placed rearward so it is easier to tie in. Hope this helps.
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Old May 11, 2010, 07:13 PM
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Thanks Fast Gay,

I may be following your lead here.....
This may be the nicest Bird I've ever seen!

....Andy
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Old May 12, 2010, 08:04 AM
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Originally Posted by Grits View Post
Thanks Fast Gay,

I may be following your lead here.....
This may be the nicest Bird I've ever seen!

....Andy
+1!
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Old May 12, 2010, 09:45 AM
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Hacker?

What about the Hacker Motor.....Better?

Andy
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Old May 12, 2010, 04:50 PM
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Canada, ON, Thunder Bay District
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I haven't had any Hacker motors but they do cost more than the Rimfire motors and many have reported that they work very well. With their lower internal resistance they produce more power and less heat on the same amp draw. I do have some Axi motors that I'm very pleased with in my larger 3D planes running on 12s. They are priced the same as Hackers. I don't think you could go wrong with a Hacker.
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