Grumman Ag Cat in 1:12 Scale - Page 4 - RC Groups
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Jan 03, 2012, 10:24 AM
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P. Tritle's Avatar

Getting Started on the Engine

The engine was glued together and trimmed, then the basic assembly painted using both Acryl and enamel paints. The Pushrods were added using aluminum wire, then the exhaust stack were done with aluminum tubing.

The holes for the spark plugs were drilled next in preperation for adding the secondary ignition details. But first, the back side will be drilled and the intake manifolds added.

At this point we're getting close, so stay tuned, it won't be long now....

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Jan 03, 2012, 10:55 AM
Veni, Vidi, Napi
catrancher's Avatar
Looking good, Pat!

Getting really excited to see this one finished up!

Jan 04, 2012, 09:39 AM
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P. Tritle's Avatar

Adding the Finishing Touches to the Engine

Got the last of the details on the engine using aluminum wire for the intake manifilds, plastic tubing for the spark plugs and soft insulated wire for the secondary leads. Once all the details were on the engine was fitted onto the mount.
Jan 04, 2012, 09:42 AM
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P. Tritle's Avatar

Getting the Cat Ready to Fly

With all the big details handled, and a dab of touch up here and there it was time to get the Rx in and the radio set up. At this point, she was ready to fly, less CG.
Jan 04, 2012, 09:52 AM
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P. Tritle's Avatar

Setting Up the CG and Mounting the Battery

I had hoped that the battery would end up on CG, but as it turns out it needed go go all the way forward to get the model to ballance at 31%. The 2100 mah 2S battery was mounted on a lite ply tray suspended between the firewall and rear cabaqne support.

Hatch covers were made from .010 styrene to cover the access hatches for the servos and Rx at the rear and the battery up front. The covers were sprayed with Aluminum Metalizer to finish up the model.

As it stands, the Ag Cat tips the scales at 20 oz. w/ the 2100 2S battery. That puts the wing loading in at 6.15 oz./ sq. ft., so she should be a nice gentle flyer. Because the model is so short coupled I desided to go with a more forward CG then normal, and will adjust as needed once the test flights get underway -- hopefully on Friday morning, so stay tuned, this one is just about done.....

Jan 04, 2012, 10:10 AM
Cobra Driver
RedTwilight's Avatar
Looks fantastic!

Good luck with the maiden flight!
Jan 04, 2012, 02:20 PM
I eat glue
You could at least wait until we got caught up from Christmas bills before finishing it off!!!!!!!!!!!!!!!!!!!
Heh wait a tick, I've got a birthday this month!
Jan 04, 2012, 07:46 PM
It's a fine fiddly business.
Robert R's Avatar
This is a really great plane.
Thanks for the battery mount detail.
Jan 04, 2012, 09:54 PM
Onward and upward.
Pilatuspc12's Avatar
Outstanding, Pat! This looks like the real thing. It definitely will need some weathering when finished. A clean Ag-Cat just doesn't look proper.

Jan 05, 2012, 06:00 PM
Gorgeous! Agree with Pilatuspc12 though - I don't think they came from the factory that pristine!
Jan 06, 2012, 11:47 AM
Veni Vidi Volavi
Brian Allen's Avatar

Looks very nice!! Hope the weather cooperates so we can hear of some sucessful flights soon (as if we have any doubt!!).

Start the Luscombe yet? Money saved up!!

Brian Allen

Veni Vidi Volavi

I came I saw I flew
Jan 06, 2012, 01:29 PM
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P. Tritle's Avatar
Wanted to let you all know the maiden on the Ag Cat went off without a hitch. But this is just a teaser. Need to go pick up the photos, then will post up a couple in fligh shots and the whole report

Jan 06, 2012, 06:11 PM
Registered User
Good news!
Jan 07, 2012, 08:37 AM
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P. Tritle's Avatar
And here's the link to the maiden flight videos on You-Tube

Still pics and flight report are coming.....

Jan 07, 2012, 08:57 AM
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wattman's Avatar
What a beautiful flying bipe , thanks for the video and all of the great planes .

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