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09-05-2007, 06:54 PM
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Join Date: Nov 2006
Location: Lewistown
Posts: 161
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In the past I would just place the switch in the panel, rotate so the anti-rotation washer makes a mark, using a #30 drill start to make a hole careful not to penetrate the panel. Using a pair of diagonal cutters reduce anti-rotation tab size to fit my little indent. Works great and is much easier.
Noel Simmons
A&P CFI
Builder of fine aircraft #27
www.blueskyaviation.net
Last edited by Noel Simmons : 09-14-2007 at 06:19 PM.
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09-05-2007, 08:05 PM
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Join Date: Jan 2005
Location: SoCal
Posts: 2,061
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Quote:
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Originally Posted by Noel Simmons
In the past I would just place the switch in the panel, rotate so the anti-rotation washer makes a mark, using a #30 drill start to make a hole careful not to penetrate the panel. Using a pair of diagonal cutters reduce anti-rotation tab size to fit my little indent. Works great and is much easier.
Noel Simmons
A&P CFI
Builder of fine aircraft #27
www.blueskyaviaiton.net |
I feel like a jerk for pointing it out, but your web address is misspelled in your signature. 
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Steve Zicree
Fullerton, Ca. w/beautiful 2.5 year old son 
RV-4 99% built and sold 
Rag and tube project well under way
paid =VAF= dues through June 2013
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09-14-2007, 06:21 PM
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Join Date: Nov 2006
Location: Lewistown
Posts: 161
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I do have creative spelling :>(
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09-14-2007, 08:10 PM
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Join Date: Mar 2005
Location: Northern California, USA
Posts: 537
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Nice trick
Nice tip, thanks.
I did something similar: I backed up my FrontPanelsExpress.com panels with a sheet of .062", and then made the anti-rotation holes in that.
In many cases, I didn't drill the anti-rotation holes all the way through. It doesn't take much to keep the switches from rotating.
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Martin Gomez
Redwood City, CA
"My RV-7 is a composite airplane: it's made of aluminum, blood, sweat, and money"
RV-7 Slider QB
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10-10-2007, 01:18 PM
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Join Date: Mar 2006
Location: Ottawa, ON
Posts: 650
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Anti rotation washer
Quote:
Originally Posted by szicree
Today I was installing switches in my panel and they all come with that little anti-rotation washer ... snip.
Steve Zicree
RV4 Wires
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My switches did not come with the anti-rotation washer. Wish I had known when I ordered (do you have to order them separately?).
Who stocks these little guys?
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Alfio
RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
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10-10-2007, 02:02 PM
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Join Date: Mar 2005
Location: ...
Posts: 2,049
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www.bandc.biz has 'em. Wonder if Stein also might have 'em?
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Dan Checkoway RV-7
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10-11-2007, 05:25 AM
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Join Date: Jun 2005
Posts: 375
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Previous Thread
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10-11-2007, 02:53 PM
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Join Date: Mar 2006
Location: Ottawa, ON
Posts: 650
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Thanks for the info, Dan and Paige.
The switches I ordered from Steinair come with a hex nut and a knurled nut. BandC's switches come with a hex nut and anti-rotation washer.
Just called Steinair, and they don't stock the anti-rotation washers anymore. They used to have a ton of them on the shelf, but they weren't popular and nobody ordered them. They finally got rid of them... and then of course they get my call with my request :-)
I asked what they used to prevent switch rotation. They use buss bars to power the switches, which prevents the switches from rotating. They also have the star washers available, that can be ordered separately (part number SA811R, I believe).
BandC do have the anti-rotating washers, though I'll first check locally again. If I don't find them here, then I will add them to list for my next order at BandC.
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Alfio
RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
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