News:



  • June 21, 2025, 03:57:59 AM

Login with username, password and session length

« previous next »
Pages: [1]   Go Down

Author Topic: How do I modify a pipe?  (Read 1480 times)

steven yampolsky

  • Guest
  • Trade Count: (0)
How do I modify a pipe?
« on: April 17, 2013, 10:30:15 PM »
I have a pipe with an exhaust stinger pointing straight back. I would like to move sot that the stinger exits at an angle. I also want to make a stinger 1.5" long too.
Can someone help me answer a few questions:

1) What kind of resin can I use to patch up the hole after I cut off the stinger? I
2) What can I use to make the new stinger? Can I use a regular CF tube? What ID does it need to be?

I would also appreciate any pointers on how to get this done properly.

The pipe is one of those long and skinny ones used for 40VF's.

Logged

Offline Brett Buck

  • Trade Count: (0)
  • Admiral
  • ******
  • Posts: 14475
Re: How do I modify a pipe?
« Reply #1 on: April 17, 2013, 10:40:11 PM »
Quote from: Steven Yampolsky on April 17, 2013, 10:30:15 PM
I have a pipe with an exhaust stinger pointing straight back. I would like to move sot that the stinger exits at an angle. I also want to make a stinger 1.5" long too.
Can someone help me answer a few questions:

1) What kind of resin can I use to patch up the hole after I cut off the stinger? I
2) What can I use to make the new stinger? Can I use a regular CF tube? What ID does it need to be?

I would also appreciate any pointers on how to get this done properly.

The pipe is one of those long and skinny ones used for 40VF's.

   You can probably use a graphite arrowshaft with at least 5/16 ID, and JB Weld. I wouldn't make it 1.5" long!  But what is wrong with a conventional stinger?

    Brett
Logged

Offline Joseph Lijoi

  • 2015
  • Trade Count: (0)
  • Captain
  • *
  • Posts: 412
Re: How do I modify a pipe?
« Reply #2 on: April 18, 2013, 08:20:59 AM »
They make clamp on silicone exhaust diverters for this application.
Logged

steven yampolsky

  • Guest
  • Trade Count: (0)
Re: How do I modify a pipe?
« Reply #3 on: April 18, 2013, 07:57:32 PM »
Quote from: Brett Buck on April 17, 2013, 10:40:11 PM
But what is wrong with a conventional stinger?
The tunnel back wall former is 1" from the tip of the pipe. Rubber deflector binds restricting the flow.
Logged

Offline Steve Helmick

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 10265
Re: How do I modify a pipe?
« Reply #4 on: April 18, 2013, 08:08:56 PM »
I recall seeing Howard with a "Utah Pipe" with dual exhaust on his RO-Jett. One was aluminum tubing, could have been from the LHS or some high-tech chit, but it looked like it was installed with (slow) JB Weld. Be sure to let it cure the required time, lest it spew sparks  f~ of molten epoxy with the rest of the exhaust residue. You might email Howard or maybe whoever bought Howard's IC stuff could chime in.  H^^ Steve 
Logged
"The United States has become a place where professional athletes and entertainers are mistaken for people of importance." - Robert Heinlein

In 1944 18-20 year old's stormed beaches, and parachuted behind enemy lines to almost certain death.  In 2015 18-20 year old's need safe zones so people don't hurt their feelings.

Offline Howard Rush

  • 25 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 7966
Re: How do I modify a pipe?
« Reply #5 on: April 18, 2013, 09:10:09 PM »
I think I used a piece of flap torque tube for the second exhaust.  It was made from 350-degree prepreg, so heat was no problem.  JB Weld should work just fine that far back, particularly with a VF.  Email me your postal address, Steve, and I'll send you some bits.
Logged
The Jive Combat Team
Making combat and stunt great again

Steven Yampolsky

  • Guest
  • Trade Count: (0)
Re: How do I modify a pipe?
« Reply #6 on: April 19, 2013, 03:17:12 PM »


How's this for an attempt? The stinger is flush with the pipe surface. Do you think it will work? ID is 3/8
Logged

Offline Joseph Lijoi

  • 2015
  • Trade Count: (0)
  • Captain
  • *
  • Posts: 412
Re: How do I modify a pipe?
« Reply #7 on: April 19, 2013, 03:38:54 PM »
Quote from: Steven Yampolsky on April 19, 2013, 03:17:12 PM


How's this for an attempt? The stinger is flush with the pipe surface. Do you think it will work? ID is 3/8

You already did it so it will work.  Looks pretty cool. 
Logged

Offline RandySmith

  • Administrator
  • Trade Count: (0)
  • Admiral
  • *****
  • Posts: 13756
  • Welcome to the Stunt Hanger.
    • Aero Products
Re: How do I modify a pipe?
« Reply #8 on: April 19, 2013, 09:28:09 PM »
Quote from: Steven Yampolsky on April 19, 2013, 03:17:12 PM


How's this for an attempt? The stinger is flush with the pipe surface. Do you think it will work? ID is 3/8

Steve
That will work, but maybe not for long, The brass will come loose normally, The best thing to do this with is a carbon tube or Cf golfshaft, arrowshaft, scuffed up very well, next would be a thinwall al. tube, scuffed very well.
You may get 25 flights or several 100, but as I have seen over the years brass is not a good material for this application.

Good luck with it

Randy
Logged

Steven Yampolsky

  • Guest
  • Trade Count: (0)
Re: How do I modify a pipe?
« Reply #9 on: May 02, 2013, 09:44:05 PM »
Howard Rush sent me proper bits to use. Thank you Howard!
Logged

Offline FLOYD CARTER

  • 24 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 4503
    • owner
Re: How do I modify a pipe?
« Reply #10 on: May 03, 2013, 12:36:50 PM »
I've had some poor luck adding an extension to my RO-Jett aluminum muffler.  The exhaust aluminum exit tubing is very short, and those rubber doo-dads held on by ty-wraps don't hold well.

What finally worked was some brass tubing with a 2-56 bolt through the joint and some JB Weld.  Note:  vibration + heat will weaken a JB Weld joint.  So the bolt is necessary.

Floyd

Logged
91 years, but still going
AMA #796  SAM #188  LSF #020

Advertise Here
Pages: [1]   Go Up
« previous next »
Tags: