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-   -   loose exhaust pipe experience ? (https://www.rcuniverse.com/forum/rc-jets-120/11647306-loose-exhaust-pipe-experience.html)

DelGatoGrande 04-19-2018 04:55 AM

loose exhaust pipe experience ?
 
Hello gang,

has any of you had the exhaust pipe become loose during flight ? ( rear support mounts on last rear frame holding the pipe broke free allowing a few degrees free move )

If yes, how was it ? Uncontrollable or you didn't notice the difference ?
Thank you in advance for this valuable feedback!

:cool:

Len Todd 04-19-2018 06:10 AM

The OEM Pipe on my Ultra Flash kept flattening the centering tabs at the rear end of the pipe. The end result is the outlet moves about 1/4" up and down from center. I don't know if the movement was connected to several stalls that inexplicably occurred at half speed or not. But this winter I took the pipe out and repositioned the tabs so the inner pipe is much more stable. I would think the pipe would have been self centering on the straights and vectoring a bit with Elev and Rudd.

At our Jet Rallies, I have seen one pipe "squirt almost entirely out the back and one come out only a few inches. Both planes landed O.K. If I recall correctly, the one with the squirted pipe had some fire damage though. I have since come to the conclusion that a loose pipe = no flight.

ravill 04-19-2018 09:27 AM

On my bandit, I noticed, by accident mind you, that the rear end of my pipe was not secured and it would move up and down about 1/4"!

And this was discovered by accident. There is no counting how many times I flew like this and I don't recall any real changes to the flight characteristics of the jet.

SECRET AGENT 04-19-2018 05:22 PM

Mine moves all the time on my f-15 and I can't tell.

CR Tech 04-20-2018 11:15 AM

Pretty much the same feedback from me, I found the pipe pretty loose on the rear end on my Viper. I think it had been loose for a few flights, I forgot to fix it and went flying with no change. I'm fixing it tomorrow .....


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