S-1S O-360 crossover exhaust pipe brackets? How is yours mounted?

Discussion in 'Lycoming & Continental' started by x2flycrj, Aug 9, 2018.

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  1. Aug 9, 2018 #1

    x2flycrj

    x2flycrj

    x2flycrj

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    Hello another dumb question I’m sure but I can’t find my old brackets and I lost my pictures so again I’m trying to figure out how to mount the exhaust stacks to the engine mount for vibration purposes... I’ve been told to mount exhaust muffler brackets around the two pipes and then cut up an old tire and attach that to the bottom of the engine mount for vibration dampening... Or something to that effect.. a picture is worth 1000 words though so if anybody can help out with photos I had super appreciate it.. thank you!
     
  2. Aug 10, 2018 #2

    jrs14855

    jrs14855

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    Homemade clamps made from 1" wide x .063 stainless or mild steel. A short spreader between the clamps to hold the tailpipes apart. Angle adapter from the spreader to a piece of #8 aeroquip hose which at the top end is attached to a welded structure that attaches to at least two sump or rear case bolts on the engine. AN3 bolts thru drilled holes in the aeroquip hose, everything else is AN4. Bolting the tailpipes to the engine mount will eventually wear the slip joints.
     
  3. Aug 10, 2018 #3

    Morphewb

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    www.customaircraft.com sells a nice clamp kit. Vetterman also. Way better than the '' cut up tire'' system. Some people say attach the stacks to the engine instead of the mount so the engine and exhaust can move together. I've done both with good results so can't vouch for a particular way to hook stuff up.

    Look up some of the RV websites and you'll find some pictures of different exhaust systems and hangars.
     
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  4. Aug 10, 2018 #4

    jrs14855

    jrs14855

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    Ben-
    Vans Aircraft apparently recommends the engine mount or firewall support. There have been at least some failures related to this that probably would not have occurred with the tailpipes attached to the engine with flex coupling. The only issue I had with my method was that clamps would slip out of position. I solved that by tack welding the clamps to the tailpipe. Trouble free for 700 hours. I have done several other Pitts S1 installations using similar method, with good results. I just feel that this method puts far less stress on the entire exhaust.
     
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  5. Aug 11, 2018 #5

    crankyklingon

    crankyklingon

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    Stole this from someone else, looks like a good way to go. FB_IMG_1531089075930.jpeg
     
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  6. Aug 11, 2018 #6

    jrs14855

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    That is one of several Vans RV ideas. I do not like the adel clamps or the hose/clamp/friction setup. I tried the adel clamps form mounting the linear actuator for my cowl flap on the Tailwind. Just before OSH I gave up on this and the cowl flap is fixed in the open position. I will try again with the clamps used by Aviat on the Pitts. Those clamps are bulletproof.
     
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  7. Aug 13, 2018 #7

    x2flycrj

    x2flycrj

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    Ok! thanks guys. Awesome suggestions. Vettermans and Custom AC sites were very helpful as well at the above photo. Great ideas. Thank you!
    Greg
     
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  8. Aug 28, 2018 #8

    x2flycrj

    x2flycrj

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    If anyone has pictures of the clamps use by Aviat on their Pitts that would be really cool to see. Thanks!
     
  9. Sep 15, 2018 #9

    x2flycrj

    x2flycrj

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    Any other photos of their S1s with the dual exhaust and clamps would be very helpful. Thanks
    Greg
     
  10. Oct 7, 2018 #10

    x2flycrj

    x2flycrj

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    Ok kinda had to come up with this on my own... in case anyone else needed an idea. IMG_4104.jpg IMG_4107.jpg IMG_4109.jpg IMG_4110.jpg
     
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