Master Contacter

Discussion of aircraft electrical system design, construction, and problems.

Re: Master Contacter

Postby Bryan Cotton » Tue Apr 11, 2017 10:38 pm

Bob,
Thanks for that info. Not a bad option.

Here is a picture of my steel key to replace the red plastic key. It started out as a tube. I found a bolt that fit snugly in the tube. There is a short piece of bolt inserted and a hole drilled through tube and bolt hunk. This hole is a light press fit for an AN3 bolt shank.
Image

The switch and steel key weigh 4 oz. An aluminum tube to rivet to the steel key adds 2 oz. Add rivets, handle, and brackets will probably be another 2 oz to the assembly - one half lb. I am curious what a contactor weighs. Anybody?
Image
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX reserved
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
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Re: Master Contacter

Postby gammaxy » Tue Apr 11, 2017 11:16 pm

Chris Madsen
Aerovee Sonex N256CM
Flying since September 2014
Build log: http://chrismadsen.org
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Re: Master Contacter

Postby Bryan Cotton » Wed Apr 12, 2017 9:14 am

Thanks Chris! Seems like a good trade.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX reserved
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Working cowl
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Bryan Cotton
 
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Location: C77

Re: Master Contactor

Postby Bryan Cotton » Wed Apr 12, 2017 7:18 pm

Here I am engineering by making parts over and over until they come out right:
Image

On the final bracket I'll have nutplates for AN3 bolts.
Image

The brackets are offset 30 degrees so I can run my pushrod horizontal from the subpanel.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX reserved
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Working cowl
User avatar
Bryan Cotton
 
Posts: 2679
Joined: Mon Jul 01, 2013 9:54 pm
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Re: Master Contacter

Postby n982sx » Thu Apr 13, 2017 11:42 pm

When I started to make a few custom parts, I saw that Bob Mika used paper models. I did that for all of my Sonex custom pieces and it worked well. Saved on aluminum.
Bob Meyers

Built and Flying Sonex N982SX http://n982sx.com
Building RV-14 N626KM (reserved) http://n626km.com
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Re: Master Contacter

Postby racaldwell » Fri Nov 03, 2017 4:21 pm

Hi Bryan,

How does the shaft for the battery switch get around the fuel tank? I don't have a front fuselage yet so I can't see for myself. I am contemplating the Flaming River battery switch that comes with an extension handle. But I already have a Sky Tek master contactor in the hangar that I am tempted to use out of simplicity sake. The one in my RV-6 has been holding up for almost 18 yrs & 960 hrs.

Still trying to finalize my power circuit.

Rick
Xenos 0057
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Re: Master Contacter

Postby Bryan Cotton » Fri Nov 03, 2017 5:32 pm

Rick,
I have not finalized it yet, but it is to the left and underneath. The handle will be on my subpanel.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX reserved
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Working cowl
User avatar
Bryan Cotton
 
Posts: 2679
Joined: Mon Jul 01, 2013 9:54 pm
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