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Old 11-04-2018, 08:47 PM
steve murray's Avatar
steve murray steve murray is offline
Join Date: Jan 2005
Location: Flat Rock, North Carolina
Posts: 294
Default Installation of Planearound Gearbox Prior to Bonding Door Halves?

I found one builder site "TASRV10" that has some good info on installing the Planearound gearbox prior to bonding the two door halves together. This approach saves cutting a hole in the bottom of the door later. Anybody else done this and have some tips? Even with the tips provided, I am a bit nervous about getting epoxy inside the gearbox?

RV8 Flying since 2007
RV10 in construction (Finish Kit)
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Old 11-04-2018, 09:47 PM
Tassie Tassie is offline
Join Date: Oct 2014
Location: Cambridge, Tas. Australia
Posts: 47
Default Plane 'round

Ha! That would be me.

I'd do it again with the precautions I took, but to be honest Steve now I'm a lot further down the road, there is sooooo much more enjoyable fiberglass work to do () with the doors and cabin top, I think it would be pretty much the same if you did everything to mount the gearboxes while you had the door halves apart, especially the support blocks each side etc., but then just leave the gearboxes out. Mark the cuts, and then after the door halves are together and you're ready, get to work with a dremel, cut out the bottom, and slide the gearboxes into place. Glassing them in will be quite trivial compared to everything else you're about to do.

Cheers from down under,

Adrian Port
RV-10 emp done, wings 90%, fuse 90%, cabin top DONE!
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Old 11-04-2018, 10:52 PM
az_gila's Avatar
az_gila az_gila is offline
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 9,899

I looked at that, but decided it would be too tricky to do with all of that epoxy and reasonable speed needed (AZ summer) to do the bonding job.

To clean it up I intend replacing the countersunk screws with washer head screws and making a thin metal plate to cover the slot and with a bend over the door edge. I'll simply use the 4 mounting screws to attach it.

The metal plate will just match the plate you need to add to cover the stock handle mechanism.
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ

Last edited by az_gila : 11-05-2018 at 07:30 AM. Reason: Added last sentence
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Old 11-04-2018, 10:58 PM
lr172 lr172 is offline
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 4,018

I had to do a lot of fabrication as I used the hendricks hidden handle and a homemade gearbox. I installed my gearbox before gluing the doors. I just used strategically placed packing tape to protect items from epoxy. It worked out fine. Just be sure to work all of the mechanisms while the epoxy is firm, but still green. This allows any covered items to break free easily and rid the epoxy, if necessary.

RV-6A / IO-320, Flying as of 8/2015
RV-10 in progress
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Old 11-28-2018, 09:14 PM
Traash Traash is offline
Join Date: Apr 2007
Location: Montgomery, TX
Posts: 40

Did the install before bonding. So glad I did. Removed cam unit before bonding and reinstalled afterwards.
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Old 11-30-2018, 12:09 PM
majuro15's Avatar
majuro15 majuro15 is offline
Join Date: Feb 2013
Location: Charlotte, NC
Posts: 575

I installed it before bonding as well, worked just fine. I didn't do any extra steps to avoid epoxy but also didn't have a ton near there anyway. Just use some good thick stuff. Honestly, I wish I had done the racks and pins as well, but it wasn't too bad working through a 1/2" hole!
Tim Huneycutt, Capt, NCANG
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