Beer Cans For A Quieter Muffler!

Discussion in 'Motorized Bicycle General Discussion' started by Nashville Kat, Jul 29, 2009.

  1. Nashville Kat

    Nashville Kat Active Member

    Joined:
    Apr 20, 2009
    Messages:
    1,433
    Likes Received:
    1
    A 16 ounce beer can, cut cleanly around the ring at the top with a can opener, is an exact fit around my muffler. Two together extend the muffler several inches and cut down on the sound- not greatly but maybe 10-15 percent. The aluminum cuts fairly easily- snips on the bottom where the can opener won't fit!

    Some radiator hose clamps hold them on- I've only got one now, but taped over the whole thing- it isn't real pretty, but my muffler wasn't before- and the end cap had vibrated off. I drilled some smaller holes in the end of the bottom one.

    Plus it's all a great heat sheild to keep from getting burned! And definitely a Db or two quieter.

    I don't think you can get busted for carrying empty containers if the top and bottom has been cut off!

    if you're under age, this is the time of year they're laying in the ditches.
    .
     
  2. ~macaddict~

    ~macaddict~ New Member

    Joined:
    Jul 29, 2008
    Messages:
    59
    Likes Received:
    0
    Could you maybe post some pictures?
    ~Mac~
     
  3. Cabinfever1977

    Cabinfever1977 New Member

    Joined:
    Mar 23, 2009
    Messages:
    2,290
    Likes Received:
    1
    a small tomato paste can will fit too.
     
  4. Nashville Kat

    Nashville Kat Active Member

    Joined:
    Apr 20, 2009
    Messages:
    1,433
    Likes Received:
    1
    Well, I could post some pix, butlike I said it's not real pretty or anything-

    It just looks like a normal muffler, but fatter and extended a few inches downward-
    (hafta watch moving it down stairs)

    and the whole things covered then in silver duct tape- not visual, but functional.

    the thing about it is, is so easy and cheap-

    and I personally think the noise is one of the biggest drawbacks about these 2 cycles-
     
  5. ~macaddict~

    ~macaddict~ New Member

    Joined:
    Jul 29, 2008
    Messages:
    59
    Likes Received:
    0
    .. Ok.
    I just want to see what it looks like before trying it out. Thanks
     
  6. wheelbender6

    wheelbender6 Active Member

    Joined:
    Sep 4, 2008
    Messages:
    3,819
    Likes Received:
    11
    You have made it functional, so somebody else may be able to make it visually appealing.
    I have also seen an air cleaner cover in this site made from the bottom part of a beer can with some holes drilled in it.
    We owe so much to the brewing industry.
     
  7. magicalpancake

    magicalpancake New Member

    Joined:
    Jul 6, 2009
    Messages:
    92
    Likes Received:
    0
    Sounds fun.. i wanna see pix!!
     
  8. TheOtherStyle

    TheOtherStyle New Member

    Joined:
    Mar 27, 2009
    Messages:
    119
    Likes Received:
    0
    Pics or it didn't happen :D
     
  9. fm2200

    fm2200 New Member

    Joined:
    Nov 16, 2008
    Messages:
    258
    Likes Received:
    0
    I did that years ago on my car, I was in the service (Air Force) very little money and the muffler rotted out, so I ran a straight section of pipe where the muffler use to be and at the very end of the tail pipe I put a beer can with four holes in the end of it. It eventually needed to be replaced but it lasted over a year and was pretty quite, no cops ever bothered with me. I used a exhaust pipe clamp to secure it.
     
  10. rmeloy34

    rmeloy34 New Member

    Joined:
    Mar 26, 2009
    Messages:
    116
    Likes Received:
    0
    I just love this!!!....God is great ,beer is good,people are crazy........amenlaff
     
  11. Nashville Kat

    Nashville Kat Active Member

    Joined:
    Apr 20, 2009
    Messages:
    1,433
    Likes Received:
    1
    Oy! Fits Harleys!
     
  12. tonytt98

    tonytt98 New Member

    Joined:
    Jun 24, 2009
    Messages:
    17
    Likes Received:
    0
    I tried this with a Icehouse beer can.

    I cut the top with a can opener. Drilled eight 1/8" holes in a circle pattern on the bottom and one hole in the middle for bolting it to the end of the exhaust. Bolted it to the end of the exhaust and road off. It got rid of a little of the high snappy pitch sound of the exhaust which was nice. Helps it not penetrating house walls at 3am in the morning. Later that night, driving from the club about eight miles down the road, I heard it fall off. I looked down and the last 5 inches of the muffler was cherry red and blew a little flame out from the end of the pipe for a few seconds. It was an awesome visual effect. lol I'm wondering what the aluminium can looked like just before it fell off.. lol BTW the bolt is still in the end of the muffler so the beer can didn't fall off because the bolt came loose.

    I'm thinking of trying the tomato paste can tip that Cabin mentioned.
     
  13. noobtard

    noobtard New Member

    Joined:
    Apr 25, 2009
    Messages:
    101
    Likes Received:
    0
    sorry, but this thread needs major bump-age... I cut slits in a beer can for my "first design" with a razorblade... it ran awesome compared to no end cap.. alot quieter than one would think.... I'm hooked now. Good thing I have like 300 b33r cans littering my room.... I plan to try many "designs" the slits worked quite fine.. more power band all around... post pics! seriously...

    the stock end cap = a bad joke. imo... and no, b33r cans DO NOT fit around the stock muffler properly... the bottom end of the "b33r" can does however.. you can just bolt "experiments" right to it.

    I hit 30+mph with my first trial... hope to improve it...
    xct2
     
  14. Nashville Kat

    Nashville Kat Active Member

    Joined:
    Apr 20, 2009
    Messages:
    1,433
    Likes Received:
    1
    OK- so the assembly I posted the pix of- with the duct tape around the two cans is gone-

    DON'T USE DUCT TAPE! it melts

    After that I had just one can, with just the inner top cut off clamped on the muffler down near the bottom- Most of the baffle is still there and the regular pipe can dissipate it's heat normally.

    Then this can came off again when the ridge at the top sheared off the can- so I'm now recommending the can be clamped on UNDER the can's aluminum ring, NOT ON the ring-(even though the ring itself is the exact fit on my own muffler at leastr)

    But what I did learn, when the can fell off, was that the muffling difference was much greater than I first thought- a very noticable difference in volume when the can suddenly came off-

    So right now the can is not on- I'm transporting the bike soon, and i'll be taking it up and down some stairs- the can assembly hangs down and is fragile- but is readily available and easily installed-

    obviously any aluminum can will work, but the longer 16 oz will give a larger baffle and , like any horn instrument, a lower sound

    I'm definitely gonna make this a standard addition when I'm up and riding again.
     
  15. Susie Q.

    Susie Q. New Member

    Joined:
    Sep 5, 2009
    Messages:
    6
    Likes Received:
    0
    thats sick!! did you notice any performance differacnce?
     
  16. Susie Q.

    Susie Q. New Member

    Joined:
    Sep 5, 2009
    Messages:
    6
    Likes Received:
    0
    yeah same here, i might take the beer can, stuff it with fiberglass or whatever silences it, then drill holes in the tomato paste can and stick it inside of the beer can,then sound can resonate thru the tomato paste can into the silencing stuff in the beer can. the attatch it somehow and drill holes in the bottom of the tomato paste can. .....diy ghetto silencer!! laff
     
  17. restapukin

    restapukin New Member

    Joined:
    Jul 22, 2009
    Messages:
    112
    Likes Received:
    0
    but beer cans add just as much noise via the flexure of thin walls - like an infernal kazoo - or like a dome-resonator dobro guitar

    you need thicker walls than a tin-can, i'm afraid.

    (I used a "Brasso" bottle which is a tinned mild steel can with a threaded bottle-top on one end. I removed the base of the can leaving the rim end on, drilled a few holes round the open 'bottle-end' end and used a hose clamp to clamp it to the end of normal exhaust. The result was slightly more rather than slightly less noise. Not what I expected.)
     
  18. Nashville Kat

    Nashville Kat Active Member

    Joined:
    Apr 20, 2009
    Messages:
    1,433
    Likes Received:
    1
    No- I think the can works well. Like I said, the moment it came off when I was riding, it was a much more noticible and surprising difference than when it was on. The aluminum can does'nt have enough tensile strength or weight to resonate much- it's just another baffle.

    Any longer pipe or extension can only lower the tone and cut down on volume, not increase it, unless I suppose one's hearing is more sensitive in a lower range.

    I'd be a little careful about stuffing anything here- you don't want to increase the back pressure.
     
  19. BarelyAWake

    BarelyAWake New Member

    Joined:
    Jul 21, 2009
    Messages:
    7,209
    Likes Received:
    4
    Ifn you guys are this determined to reduce noise, you may wanna give this a shot;

    http://motorbicycling.com/f4/remote-airbox-intake-silencing-cheap-10967.html

    It significantly lessened the noise level of my bike and is a much higher quality filter for those that play in the muck like I do ;)

    With two strokes, a LOT of the noise comes from the intake and cobbling this setup together for $5 did a lot more than all my messing about with the stock exhaust :)
     

Share This Page