Muffler Question

Discussion in '2-Stroke Engines' started by Fulltimer, Jul 17, 2012.

  1. Fulltimer

    Fulltimer Member

    As can be seen in the pictures I used flexible gas line to make a dual exhaust system. BUT, man is it loud. No mufflers. Does anyone know of a muffler (small) that I could put in line on each pipe?



  2. wheelbender6

    wheelbender6 Well-Known Member

    Search the site for "Silencer". I am sure there is a way to make one from a beer can.
  3. tooljunkie

    tooljunkie Member

    small engine shops carry those hot dog mufflers,they are a little smaller than a hot dog,and deaden it a may want to consider restricting it a little for a little more silencing.
  4. Fulltimer

    Fulltimer Member

    Thanks for the replys guys. I'll see what I can come up with.

  5. vermhot

    vermhot Member

    Dude that thing rocks !!!!! I would run the heck out of it !!!!!!!!!
  6. jaguar

    jaguar Well-Known Member

    I think Sick Bike Parts sells a silencer for $9
  7. Fulltimer

    Fulltimer Member

    Thanks! I do want to quiet it down some though. I live in a 55+ community!

  8. Fulltimer

    Fulltimer Member

    Thanks, I'll check them out.

  9. pedalman

    pedalman Member

    My 70cc bike is louder it seems than cars on the street!!! Why should that be(with stock muffler)??? I'm also going to try making a DIY silencer, as I want to be seen but not heard miles away.
  10. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    How about one muffler before the T joint?

    Gas line is not good for exhaust tubing due to its interior non smooth spiral shape.
  11. jaguar

    jaguar Well-Known Member

    pedalman, here is a quick and easy way to silence it more:
    buy a can of food that is a bit larger diameter than your muffler
    cut the top off and put some slits in it about an inch long (use tin snips)
    put about 12 holes in its sides about 1/8" diameter
    stuff it with metal scouring pad
    use hose clamp to secure it to the muffler
    paint it and put a flames sticker on it !
  12. vermhot

    vermhot Member

    Hey Jagaur , So I downloaded the plans for that pipe you have on your page and took it to work and burned it out on the plasma table there and shaped it ,found an old metal chair cut it apart ,made a flange for the head and welded it all up !!! Well it's not pretty like yours but it works ,and works great !!!!!! I'm going to make a second one out of 20 gauge sheet metal ,I used 22 ga. and was in to much of a hurry to get it done !!! When I made the first pipe ,I had made a temp-let so I can just do it all at home !!! Work kinda frowns on stuff we make at work !!!!!! Great pipe and loud and I love it !!!!!!! Thanks !!!!!!!
  13. jaguar

    jaguar Well-Known Member

    If you took my advice and made the belly exit version you would have half the noise and a bit more torque. But anyway I'm glad someone made one. Post your results on the post about the torque pipe. :)
    I'm just now finishing the plans for the stealth silencer. Go to the post about it to see where to download it from.
  14. pedalman

    pedalman Member

    Thanks for advice jaguar, I was thinking I first want to try glass packing the stock muffler a bit and see if there is any difference, and a new muffler gasket as I wrecked the factory supplied one and had to cut another one and didn't think it fit perfectly...but otherwise I go with yours,though hopefully I have enough clearance at the bottom of muffler and ground.
  15. jaguar

    jaguar Well-Known Member

    Fiberglass in silencers are not in the route of main gas flow. When put in the main flow, which is what you are proposing, then it gets pushed by the force of the flow which screws things up. Try just putting metal scouring pad in there which has more resistance to being moved.

  16. pedalman

    pedalman Member

    good point, not to mention them possibly clogging from oil also,thanks!
  17. pedalman

    pedalman Member

    OK I put the stainless steel wool in stock muffler---it definitely quiets the muffler but now I hear a different sound when driving---it's either the clutch or gearing in the motor,but it's seems louder than motor as when I pull in the clutch and hear pure idling motor as I coast I don't hear that other sound,then when letting clutch engage motor I hear that weird,almost scraping sound---any ideas?

    Put on the booster bottle also for smoother running, but this sound was before booster bottle.

    Again any ideas?
  18. pedalman

    pedalman Member

    Update,tried packing muffler with fine mesh steel wool, too fine I think,it made motor not able to idle smoothly,harder starting,no good. Repacking with the regular steel wool.
  19. IbedaYank

    IbedaYank Member

    steel wool is to fine try ... Copper pot scrubber package at your local $1 store

  20. pedalman

    pedalman Member

    Just to let people know, the pot scrubber steel wool worked fine.

    In the stock muffler is a small tube running out to outlet hole, I also stuffed that small tube rather loosely with about half inch of steel wool sticking out and took a small hose clamp fastening that loose end to outlet tube so it wouldn't blow out. I am SO much happier with my gas motor as when I idle it's nice and quiet,before I would always cut the engine when approaching people so as not to scare them.