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07-09-2009, 08:39 PM
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#1 |
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Bad-ass Super Contributer!
 
Join Date: Aug 2008
Location: Calgary Alberta Canada
Age: 46
Posts: 231
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How tight is tight ??
Curious to know how tight a plug cap should be. Should it be able to rotate freely or should it be completely snug. Is it worth adding additional restraint to make sure it's not moving like a tie strap or wire? The plug cap does snap securely over the plug but rotates freely.
Thanks Flyer88 Last edited by Flyer88; 07-17-2009 at 12:10 AM. |
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07-09-2009, 08:46 PM
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#2 |
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Do Work
Join Date: Jan 2006
Location: Tulsa Oklahoma
Posts: 902
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Re: How tight is tight ??
as long as you cannot pull off the plug cap with a reasonable amount of force, you should be good to go. no tie rap
__________________
Check out my youtube page ----> www.youtube.com/bkjeep |
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07-09-2009, 08:46 PM
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#3 |
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Super Moderated Contributer!
Join Date: Mar 2006
Location: USA, SD, Worthing
Posts: 5,916
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Re: How tight is tight ??
Mine are able to rotate and that is fine. As long as they snap on, you should be good.
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07-09-2009, 09:21 PM
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#4 | ||||||||||||||||||
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Mode 1
 
Join Date: May 2009
Location: Lake Dallas, Tx.
Posts: 34
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Re: How tight is tight ??
The only deadstick I have ever had (gas) was because a plug wire came off in flight. Since then, I always use some method of security. At one time, I used .031 stainless steel safety wire twisted up to the engine mount. Now I place a small spring across the plug with the ends hooked to the lower set of cooling fins. It's a good idea to provide a little chafing protection at the point of contact with the plug cap.
It may be overkill, or just plain paranoi but it works, weighs less than an ounce, and gets a LOT of comments at the field. I try eliminate as many potential problems as possible. Murphy does the rest! Ken
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07-09-2009, 09:26 PM
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#5 |
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Doo It! Doo It!
 Join Date: Feb 2006
Location: Calgary
Age: 41
Posts: 96
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Re: How tight is tight ??
One tip for removing a tight cap... use a flat head screw driver and gently twist/pry it off instead of just pulling it off with your hand... I did that once and wrecked the connection so I had to order a new Cap kit and repair it.
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07-15-2009, 06:20 AM
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#6 |
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Super Contributer
Join Date: May 2008
Location: Toms River,New Jersey
Posts: 116
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Re: How tight is tight ??
I got a lot of radio noise from a loose cap once. Now I use hose clamps. Maybe overkill but it`s cheap.
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07-16-2009, 04:50 AM
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#7 |
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Bad-ass Super Contributer!
Join Date: Apr 2007
Location: The netherlands
Age: 68
Posts: 1,590
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Re: How tight is tight ??
I use tie-wraps on push-on caps. Belts and braces system I know, but rather safe than sorry.
__________________
Best regards, Pe Reivers Dealer for MTW, MVVS, MOKImotor, Mejzlik, Xoar, RCexl www.mvvs.nl www.prme.nl/forum/ |
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07-16-2009, 09:44 AM
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#8 |
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I got it! I got it!
Join Date: Apr 2006
Location: Berkeley Springs, WV
Age: 58
Posts: 2,197
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Re: How tight is tight ??
Experienced a bit of servo interference (mostly throttle, some aileron). Traced to plug cap not quite on snug. Now use a piece of safety wire to make sure it doesn't loosen up. Just drill a small hole in a fin to secure the wire. This is SOP for me now
 Earle |
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07-17-2009, 12:24 AM
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#9 |
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Bad-ass Super Contributer!
Join Date: Aug 2008
Location: Calgary Alberta Canada
Age: 46
Posts: 231
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Re: How tight is tight ??
I did use a hose clamp but it put pressure on the seam of the cap and split it open a bit and I was getting interference. Couldnt figure out how or why until I saw the gap in the plug cap. Now I use some wire around the very top of the cap below the retainer ring for added security.
Flyer88 Last edited by Flyer88; 07-18-2009 at 02:05 AM. |
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07-17-2009, 10:35 AM
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#10 | ||||||||||||||||||
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Mode 1
Join Date: May 2009
Location: Lake Dallas, Tx.
Posts: 34
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Re: How tight is tight ??
My compliments on your job of using safety wire! I've twisted a hundred miles of it and enjoy seeing when someone does a nice job. It's almost like art to me!
Ken 1941 Taylorcraft BC12-65
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