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Old Nov 13, 2007, 06:32 PM
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Proctor Antic e-conversion: motor/battery compartment details

Hi all,

Back in 2005 while recovering from triple knee surgery I was able to complete construction of a Proctor Antic, and did it as an e-conversion. Thayer and FlyRC magazine kindly ran it as an article in the AirShow section of the magazine in January 2006.

Recently I had a request for some more detailed photos of the conversion. Instead of emailing them I thought I'd share them with everyone.


Here's the Antic, hanging on the wall, waiting to be finished...
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Old Nov 13, 2007, 06:38 PM
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The first thing I did was to build a test nose, based on the design of the glo powered Antic. This nose (quickly dubbed the "Anteater nose") was simple slab construction and proved my choice of power and battery selection.

It was designed to fit into the same bolt holes as the glo engine used, so if I wanted to I could always switch back and forth between a glo engine or an electric motor. Note the down and right thrust that was designed in.

It worked perfectly, but left something to be desired in the looks category.
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Old Nov 13, 2007, 06:45 PM
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After the tests proved it would work, I set about making it right.

On my workbench is a Proctor Jenny kit, and I decided to make it look as if the builder had bashed a Jenny nose with the Antic.

The sides are made out of 1/8" ply and the firewall is 3/16" ply. As with the Anteater nose, this nose also fits into the same holes as the glo engine mount.

I made a hatch for access to the batteries from the top, and used Proctor's OX-5 kit as an engine with 1/64" ply across the top. It's a bit too big but looks fine enough. Note the cutouts in the hatch frame for the firewall.
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Old Nov 13, 2007, 06:52 PM
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The firewall had a large cutout made into it for the batteries.

There's velcro on the bottom, and velcro straps hold the batteries in place. I also use a couple pieces of 3/8" balsa stock as spacers between the batteries for cooling.

The hatch has 2 leather shoelaces glued across the top, and socket screws hold them and the hatch in place.

The front of the cowl is brass colored screen door material, glued in place. Note the holes in the firewall for air into the battery compartment for cooling.

I cut and hollowed out some 1/4" dowel to simulate louvers, and framed a simulated access hatch on both sides. The hinges came from a doll house supply store and just add a little touch.

The wire on the bottom left side of the cowling is a "shunt" to keep the circuit dead until I am ready to fly. It's something I want to get back to and make it look better.
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Old Nov 13, 2007, 07:04 PM
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The end result is a graceful piece of flying machinery.

MANY thanks to Joe & Gary of Proctor Enterprises, who define the phrase "Class Act". And to Thayer, who kept kicking my tush until I finished. In flight photos by John Vanderhage.

Specs: AXI 4120/18 motor, APC 13/6.5 prop, Jeti Opto 70 Plus speed control, Kokam 6s 2100 mAh Lipo batteries. WOT 35 amps, 650 watts, 5.3 w/oz, 6 w/lb.

With a little bit of a dive she loops and rolls with no problems, just like a regular Antic. The power system is almost 2 years old so I should upgrade the batteries, but they've worked fine so.....

Short video is here http://www.rcgroups.com/forums/showt...11#post8544718
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Old Aug 05, 2013, 09:10 PM
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Antic on floats - e-conversion

I have been pondering this for a long time as I have an Antic that has been hanging in my basement for years. I am going to put it together and check it's integrity and trueness.
Any thoughts for a decent power system for flying off water?
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Old Aug 05, 2013, 09:51 PM
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Proctor lists the weight with floats as 8.5 lb. electrifying may add 12 oz as you can't really lighten it at this stage. http://www.proctor-enterprises.com/p...t_seaplane.htm
Power 60 or equivalent is fine.
This motor was co-engineered with Scorpion & is on sale awaiting the new series. I paid around $15 for shipping 3 weeks ago. It moves my Astro Hog with authority on 15x10. For your application 16 x 8 prop probably.
http://www.allerc.com/hyperion-zs402...or-p-4706.html
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Old Aug 06, 2013, 01:43 AM
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That 8.5 pounds is for the Antic biplane on floats, not the Antic monoplane converted. I wouldn't worry much about the weight though. The Antic's have quite a bit of useful load.

Thayer
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Old Nov 05, 2013, 08:51 PM
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beautiful job steve!
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Old Aug 01, 2015, 09:36 AM
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Excellent work. This thread popped up in perfect time. I am in process of converting antic to electron propulsion
I already have designed nose conversion, but after reading this I will make small change. I was going to load batteries from the bottom. I'll think about this one more time. Loading from the top is more convenient.
My nose will be little bit tapered too.
I will use same dummy engine as you. It looks great.
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Old Yesterday, 11:33 PM
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Quote:
Originally Posted by scoobiemario View Post
Excellent work. This thread popped up in perfect time. I am in process of converting antic to electron propulsion
I already have designed nose conversion, but after reading this I will make small change. I was going to load batteries from the bottom. I'll think about this one more time. Loading from the top is more convenient.
My nose will be little bit tapered too.
I will use same dummy engine as you. It lks great.
Make sure you start a thread with pics, I'd like to watch your progress. And I'll bet I'm not the only one.
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Old Today, 12:22 AM
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+1
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