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-   -   Would you keep using this pipe ? (https://www.rcuniverse.com/forum/rc-jets-120/10083896-would-you-keep-using-pipe.html)

RCUser012 10-21-2010 12:27 PM

Would you keep using this pipe ?
 
1 Attachment(s)
On the first run through this pipe, i had a hot run ... the pipe was glowing red hot for a few sec, enough to actually burn the lip of the carbon bypass to a crisp that was touching it ! .. anyway, this is how it looks now. It appears as the heat caused enough expansion in the material to bulge it out past the outer pipe separator ring welds ... all in all the pipe feels pretty sturdy, and im inclined to keep using it ... or am i looking to play russian roulette with this pipe on a 36lbs engine blowing through it and risking a collapse ? opinions ? advice ? thanks guys ...


~V~

tamjets 10-21-2010 12:36 PM

RE: Would you keep using this pipe ?
 
I wouldn't put the plane to risk. The 36 lbs engine is a lot of sucking and blowing.

RCUser012 10-21-2010 12:43 PM

RE: Would you keep using this pipe ?
 

a lot of sucking and blowing.
[X(] [X(] we are talking about a jet engine ? right ??? :D


yea, i kind of had that feeling ...


atb,

~V~

Harley Condra 10-21-2010 02:09 PM

RE: Would you keep using this pipe ?
 
Any time the pipe is deformed, it should be replaced.

Here's a quick way to figure it out.
What percentage of the total value of the jet is a replacement pipe?
For example, if the jet was worth $5,000.00, and a new pipe cost $100.00, the pipe is only worth 2% of the whole thing.

Would you gamble the $5000.00 for a lousy 2% replacement pipe cost?

Not me.

I know the figures are not realistic, but the concept is important.

invertmast 10-21-2010 02:11 PM

RE: Would you keep using this pipe ?
 
I would replace it..

Kelly W 10-21-2010 02:56 PM

RE: Would you keep using this pipe ?
 
I had a very similar looking pipe last year and also showed the picture to a few other experienced jet pilots as a sanity check. It was a consensus to replace it once the dimples had become exaggerated.

I'd hang it on the garage wall as a trophy for a crash that was avoided. :)

Kelly

RCUser012 10-21-2010 04:12 PM

RE: Would you keep using this pipe ?
 
new pipe ordered ... thanks for confirming my thoughts on this guys ...

~V~


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