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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › TT Redline .53 -- Needle O-ring Loose
03-06-2008 11:40 PM  10 years agoPost 1
WJackson

rrElite Veteran

Smyrna, Delaware

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I noticed I was getting fuel around the needle and if I wiggled the needle it had quite a bit of movement. I noticed the o-ring just doesnt seem large enough. I replaced it with a 1/4-1/8-1/16 oring and it really firmed it up.
btw-I'm @ 2 turns out.

RIP Roman
Bill Jackson
AlignUSA

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03-07-2008 04:09 AM  10 years agoPost 2
Razz

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Louisville, KY

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Yea, I noticed this also with my TT53 needle valve. I haven't run my engine yet, I'm in the process of installing a carb smart on my Extreme 50. I only noticed the movement when I removed the 'spring clip' which puts pressure on the needle, and reduces this radial movement. I seems that the threaded portion of the needle doesn't fit as tight as on my OS's. I know a few others have used the carb smart with there TT53, they haven't mentioned any problems. I wanted to slip a piece of fuel tubing over the neddle and holder, but it caused too much drag.

Brian Rasmussen

DX8, Ballistic FSO, Gaui X5, Warp 360, Vbar

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03-07-2008 01:38 PM  10 years agoPost 3
HeliPhil

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Brentwood, Essex, UK

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the usual fix for loose 'o'rings is to shrink a piece of heat shrink tube down into the groove and then put the 'o'ring back. It will tighten up nicely ( Irvine engines and SC/ASP used to suffer this).

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03-08-2008 12:03 PM  10 years agoPost 4
ZXXflyer

rrKey Veteran

stone mountain, georgia, US

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that's an EXCELLENT fix for a loose fitting o-ring!!

Believer in Weston motors!

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03-09-2008 12:51 AM  10 years agoPost 5
WJackson

rrElite Veteran

Smyrna, Delaware

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Decided to redo it and save the o-ring I bought and tried the heatshrink idea. It worked brilliantly.

RIP Roman
Bill Jackson
AlignUSA

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03-10-2008 11:53 AM  10 years agoPost 6
HeliPhil

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Brentwood, Essex, UK

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Glad I could help - I did think everyone knew that one!!!!
Now I will have to check my TT53 to see if I have the same problem.....

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03-10-2008 02:02 PM  10 years agoPost 7
Dave M

rrApprentice

Mi.

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See....reading this forumn gains you knowledge...I did not know this trick either.

It's OK....It's not your fault !!!

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03-13-2008 01:22 PM  10 years agoPost 8
Obiwan

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Sevilla, Spain

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Folks

I cannot understand the fix. Could anybody explain a little bit more?

Apoligies for my english.

Antonio

Best way to predict the future, is to Invent it.

FORMERLY KNOWN AS ForrestGump

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03-13-2008 01:35 PM  10 years agoPost 9
WJackson

rrElite Veteran

Smyrna, Delaware

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Take the oring off. Cut a small sliver of 1/8th inch heatshrink. Stretch it over the groove and shrink it down into groove. Reinstall oring over heatshrink. Then your done, reinstall needle.

RIP Roman
Bill Jackson
AlignUSA

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03-13-2008 01:38 PM  10 years agoPost 10
Obiwan

rrVeteran

Sevilla, Spain

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OK I understood now thanks

Best way to predict the future, is to Invent it.

FORMERLY KNOWN AS ForrestGump

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