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11-25-2006, 03:50 PM
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Join Date: Jun 2005
Location: Cedar Park, TX
Posts: 3,152
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Where to safety tach cap?
Any good ideas on where to safety wire the tach cap to? How about drill a small hole through the end of that case stud for the aux alternator and safety wire to that?
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Scott Card
CQ Headset by Card Machine Works
CMW E-Lift
RV-9A N4822C flying 2200+hrs. / Cedar Park, TX
RV8 Building - fuselage / showplanes canopy (Done!)
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11-25-2006, 04:41 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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That'll work, but why not just double nut the stud and safety wire between nuts? BTW, the cover on the tach shaft is only a dust cover. There's an oil seal inside.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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11-25-2006, 06:29 PM
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Join Date: Mar 2005
Location: ...
Posts: 2,049
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Or wrap it around the breather fitting. Simpler = better.
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Dan Checkoway RV-7
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11-25-2006, 07:56 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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What wire?
Interestingly enough, the certified, STC'd, high price cover that came with the Horizon digital tachometer for the Tiger didn't come with any safety wire holes.... 
Scott, which supplier provided the one in the picture?
And they claim "certified" is better..... 
gil in Tucson
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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
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11-25-2006, 08:48 PM
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Join Date: Jun 2005
Location: Cedar Park, TX
Posts: 3,152
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The tach cap that I have is an Andair cap from ACS.
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Scott Card
CQ Headset by Card Machine Works
CMW E-Lift
RV-9A N4822C flying 2200+hrs. / Cedar Park, TX
RV8 Building - fuselage / showplanes canopy (Done!)
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11-25-2006, 09:02 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,247
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Quote:
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Originally Posted by az_gila
Interestingly enough, the certified, STC'd, high price cover that came with the Horizon digital tachometer for the Tiger didn't come with any safety wire holes....
gil in Tucson |
And the one that I got for the RV (I honestly don't rememebr where), has a central piece with a hole for the safety wire, and then an outer ring that actually screws on to the threads. In other words, the part that "fastens" doesn't have a saefty wire hole, and the part that doesn't...does! I didn't even bother with a safety, cause it wouldn't hold anything... 
Paul
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Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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11-25-2006, 09:14 PM
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Join Date: Mar 2005
Location: Mansfield TX
Posts: 339
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I tried two caps. None fit. There wasn't enough room to even screw it on.
Then I was told it's not needed. Hasn't leaked yet.
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11-26-2006, 07:06 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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As I said before, it's primarily a dust cover. It keeps dirt from getting into the seal.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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11-26-2006, 07:50 AM
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Join Date: Sep 2005
Location: Maple Grove, MN
Posts: 2,331
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I'll safety wire mine as soon as I find it. I lost is somewhere over the United States, so it might take a while. That was 700 hours ago.
I had to machine it on the lathe just to get it to fit, and it is only a dust cover, so I never bothered to replace it.
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Alex Peterson
RV6A N66AP 1700+ hours
KADC, Wadena, MN
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11-26-2006, 08:41 AM
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Join Date: Jun 2005
Location: Cedar Park, TX
Posts: 3,152
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This is all very entertaining. I really had no idea there wasn't any oil pressure in there, but it sure makes sense. So I guess the idea is not to worry so much about really safety wiring it, but maybe at least tether it to something so it is at least there to put back on . I appreciate the comments.
__________________
Scott Card
CQ Headset by Card Machine Works
CMW E-Lift
RV-9A N4822C flying 2200+hrs. / Cedar Park, TX
RV8 Building - fuselage / showplanes canopy (Done!)
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