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02-08-2008, 01:31 PM
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Join Date: Sep 2006
Location: Manstad, Norway
Posts: 866
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Cap for the tach-plug needed (I think...)
Hi.
I've a Superior IO-360 with dual P-mags and I think I need a cap plug.
The RPM-indicator get's it's tach signal via a wire from the P-mags (I think?) so the tachdrive-port on top of the aft side of the engine won't be need. ( I think)
Therefore I suspect I need a cap plug of some sort to screw on the tach plug? I mean; that tach plug needs some cover of some sort, right?
I've searched this forum but can't find some info on this?
Any idea where I can get a suitable cap plug?
Sorry for the possibly dumb question guys... (and gals....)
Thanks!
__________________
Regards Alf Olav Frog / Norway
First RV-7 completed, (bought partly finished from a US-builder) 305 hrs per July 2014, SOLD
Second -7 had first flight Feb 25th 2014. 220 hrs pr July 2019. Life is good!
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02-08-2008, 01:37 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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Doesn't have to be any particular cap.
There are cap plugs available, but they are only "dust" covers. The shaft has an internal oil seal. The cap is just to keep foreign matter out of the tach drive.
__________________
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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02-08-2008, 01:37 PM
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Join Date: Mar 2006
Location: Ottawa, ON
Posts: 650
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Here you go...
Quote:
Originally Posted by ao.frog
Hi.
I've a Superior IO-360 with dual P-mags and I think I need a cap plug.
The RPM-indicator get's it's tach signal via a wire from the P-mags (I think?) so the tachdrive-port on top of the aft side of the engine won't be need. ( I think)
Therefore I suspect I need a cap plug of some sort to screw on the tach plug? I mean; that tach plug needs some cover of some sort, right?
I've searched this forum but can't find some info on this?
Any idea where I can get a suitable cap plug?
Sorry for the possibly dumb question guys... (and gals....)
Thanks!
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VAF thread:
http://www.vansairforce.com/communit...ght=tach+cover
Part:
http://www.aircraftspruce.com/catalo...es/tachcap.php
__________________
Alfio
RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
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02-08-2008, 01:40 PM
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Join Date: Jan 2005
Location: albuquerque, nm
Posts: 1,167
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You need a tachometer drive cap. I believe Van's, Aircraft Spruce, and Avery tools all carry them. From Van's, it's part number: IE RC-1 CAP.
Guy
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02-08-2008, 01:50 PM
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Join Date: Sep 2006
Location: Manstad, Norway
Posts: 866
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Thanks guys!
I REALLY appreciate this forum!
Thanks for the info guys. I'm just about to place an order to Vans this weekend, so I'll include the cap too. Problem solved in less that 10 minutes!
(Guess I've also to be more creative when searcing the forum and not giving up so easliy....)
Thanks again!
__________________
Regards Alf Olav Frog / Norway
First RV-7 completed, (bought partly finished from a US-builder) 305 hrs per July 2014, SOLD
Second -7 had first flight Feb 25th 2014. 220 hrs pr July 2019. Life is good!
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02-08-2008, 01:51 PM
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Super Moderator
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Join Date: Jan 2005
Location: Hangar/home at Hicks Airfield (T67), Fort Worth, TX
Posts: 629
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Tach Drive Caps
Chief Aircraft sells one for $6.95.
Aircraft Spruce has one with four tabs so you can safetywire it wherever it happens to be convenient.......$19.95.
I ordered the one from Chief. It does the job.
__________________
Mike Reddick
VAF#153
Pilots N Paws Pilot
RV6A N167CW 1,900 HRS
Ft Worth, TX (T67)
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02-08-2008, 02:11 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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I was given one of the Aircraft Spruce ones by the SOCAL group last fall - it is truly "Presentation Quality".... 
__________________
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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02-08-2008, 06:13 PM
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Join Date: Sep 2005
Location: Maple Grove, MN
Posts: 2,331
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Quote:
Originally Posted by mrreddick
Chief Aircraft sells one for $6.95.
Aircraft Spruce has one with four tabs so you can safetywire it wherever it happens to be convenient.......$19.95.
I ordered the one from Chief. It does the job.
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Let's see - that money will buy a good six pack or a case of beer. Dust cover or beer, hmmm. My plane doesn't have a dust cover, hasn't for the last 800 or so hours. Beer was good.
Seriously, cover not needed.
__________________
Alex Peterson
RV6A N66AP 1700+ hours
KADC, Wadena, MN
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02-08-2008, 06:15 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by AlexPeterson
Seriously, cover not needed.
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It may not be needed, unless you removed the tach drive, as I did.
Even then, for the price of a good six pack, it is probably not a good idea to leave it open
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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02-08-2008, 06:18 PM
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Join Date: Sep 2005
Location: Maple Grove, MN
Posts: 2,331
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Quote:
Originally Posted by N941WR
It may not be needed, unless you removed the tach drive, as I did.
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You mean the whole thing, seal and all was removed? If so, that is a different issue altogether.
__________________
Alex Peterson
RV6A N66AP 1700+ hours
KADC, Wadena, MN
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