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HelicopterEngines Plugs Mufflers Fuel › pipe not staying on ???
09-01-2009 08:55 PM  8 years agoPost 1
norsman

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paradise PA

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Haveing a problem keeping my smoothy pipe on my TT.53.Tryed longer bolts,double nuts ,red lock tight nothing works .What are some of your tricks??Thanks

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09-01-2009 09:05 PM  8 years agoPost 2
bigwolf1

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USA

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sounds like the mating surfuse is not good. might want to ck it.

MAH blade Rep
Trex700LE
Magnum fuels

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09-01-2009 09:05 PM  8 years agoPost 3
2LTime

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Walworth,NY

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Fly it and retighten them when they're hot.

Jeff

If you can't learn to do it well, learn to enjoy doing it badly.

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09-01-2009 09:05 PM  8 years agoPost 4
norsman

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paradise PA

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I'm useing a gasket

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09-01-2009 09:06 PM  8 years agoPost 5
2LTime

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Walworth,NY

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Remove the gasket

If you can't learn to do it well, learn to enjoy doing it badly.

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09-01-2009 09:06 PM  8 years agoPost 6
norsman

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paradise PA

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I'm doing that just to keep the damm thing on.I get about 7 mins and start to hear it coming loose

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09-01-2009 09:07 PM  8 years agoPost 7
norsman

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paradise PA

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You think,no gaskit

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09-01-2009 09:20 PM  8 years agoPost 8
bigwolf1

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USA

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I use some permatex ultra black silicon for a gasket sealer. I has to be uneven on the mating surface to keep coming loose. flat board and some sandpaper will fix that.

MAH blade Rep
Trex700LE
Magnum fuels

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09-01-2009 09:33 PM  8 years agoPost 9
Pulento

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CHILE

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Have you tried Loctite 266 ? Is high temp red loctite.

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09-01-2009 09:44 PM  8 years agoPost 10
SC Raptorman

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South Carolina

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The Gold Hi Temp silicon works for me .

Oh what a feeling 3D Flying can be
Magnum Fuels

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09-01-2009 10:04 PM  8 years agoPost 11
Andy from Sandy

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Bedfordshire, UK

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Apart from the mating surfaces not being flat you should also consider that you might have a vibration problem.

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09-01-2009 10:04 PM  8 years agoPost 12
twistedrcpilot

rrNovice

Houston, Tx - USA

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you are over heating

Also, don't use aircraft nuts. The rubber in them melt. use a regular nut, an alum. gasket and red locktite.

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09-01-2009 10:55 PM  8 years agoPost 13
Buzzin Brian

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College Station, Texas

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Do not use loctite at all! Use split lock washers under the head of the bolts. Loctite turns into a liquid at high temps and acts like a lubricant. Tightening 2 or 3 times on the first run along with lock washers and perhaps back nuts usually cures these types of issues. But I to would tend to think there could be a vibration issue as well. Uneven surfaces is also a potential problem here. I to agree that plain nuts are best to back nut the pipe with star lock washers under them.

I hope this helps some.

Brian

Build it, fly it, crash it. Repeat as often as needed.

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09-01-2009 11:07 PM  8 years agoPost 14
Dood

rrProfessor

Wescanson

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The craziest thing I've ever heard is people putting JB Weld between th engine and the muffler header. I've seen many people recommend that here before and my jaw drops every time.

So before anyone recommends using JB Weld, Please don't do that.
Just Say NO to the JB Weld.

You'll never have a smooth mating surface again if you do that.

Do as Buzzin Brian says. Tighten it while it is really good and hot.
And use some kind of locking washer, either a star washer or a split washer.

Don't use loctite. Waste of time.
and Red loctite is just foolish.

I now also say no to using hi-temp silicone gaskets. It's messy and destroys glow plugs.

Just go metal to metal.
The key is to tighten the bolts while the pipe and engine are hot.

  ▲
▲ ▲

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09-02-2009 02:32 AM  8 years agoPost 15
norsman

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paradise PA

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I think my issue is not having the spacer that came with the pipe and it being to close to the frame and getting vibs

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09-02-2009 02:57 AM  8 years agoPost 16
airdodger

rrElite Veteran

Johnston USA

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If you overtighten the bolts they will loose their elasticity and keep stretching, try some new bolts and don't over do it, also as mentioned no gasket and not touching anything. Overheating can also be a cause.

Chris

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09-02-2009 04:27 PM  8 years agoPost 17
nickt919

rrVeteran

New Orleans, Louisiana

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If the two mating surfaces are rough from beating on each other use #600 wet sandpaper on a glass surface to smooth them out. Get the surfaces good and flat. It's fairly easy because you're cutting aluminum. Clean it all with alcohol or some other solvent. Use a very thin coat of 5 minute epoxy between the two metal surfaces. Tighten the bolts before the epoxy sets.
This is not my idea but it works very well...I got this tip from Curtis a few years ago at Mayday and I've never had a loose pipe problem again. The only negative I've found doing it this way is you have to clean the surfaces well every time the pipe comes off. Sometimes it's a pain in the butt. Then again, I do the #600 wet sandpaper every time my pipes come off.

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09-02-2009 04:59 PM  8 years agoPost 18
DS 8717

rrProfessor

Here wishing i was somewhere else

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JB weld it on,it will still come loose if you need it to and the old JB weld scraps off with a razor blade. Just use a very small amount you dont need much.I have done lots of mufflers this way.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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02-20-2010 03:54 PM  7 years agoPost 19
n8rloves2fly

rrApprentice

omaha,ne USA

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I love JB weld very small about works great unless you a guy whos pipe falls off alot. Then you dont need anything. Metal detector?

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04-01-2010 10:53 PM  7 years agoPost 20
Jacoub

rrKey Veteran

Kuwait

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Actually, I have the same problem with my OS 50, I tried every thing, I thought that I had an out tracking blade problem, but every thing was ok,I got Zero pitch mechanically with mid stick,the vibratiotion problem was form the 611 gyro gain, when I did change it every thing is ok . Yes I lose 3 pipes beacuse of this issue, I tried outrage, Align and Stock JR vibe pipe, (( the stock is the best )), Also I did the same with all pipes, Red locktight with gasket, I remember once I tried it without gasket and it worked, but I think the gasket should be on.

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