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muffler/noise


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. where can i get a muffler that really quiets down a 2 stroke bike engine? mine is way too loud ...
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Old 09-17-2009, 12:14 PM
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Default muffler/noise

where can i get a muffler that really quiets down a 2 stroke bike engine? mine is way too loud when im going fast. thank you.
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Old 09-17-2009, 12:29 PM
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Default Re: muffler/noise

I would look into moped exhausts (tho the manifold will need a bit of tweaking to get it to fit) there's also "poo-poo" pipes, much like the stock one but with a much longer head pipe so the muffler itself is more toward the back of the bike, behind you instead of under

I dunno where to get a poo-poo, I'd check Spooky, I think they might have them, but a moped exhaust might look better and be quieter - if a little more work.

If you dig around the forum some - there's actually quite a bit on quieting these MBs, the intake is responsible for a LOT of the noise you hear. I found when I made a silencer for mine that it had been actually louder than my exhaust was.

Good luck man, I too like the "stealth" approach
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Old 09-17-2009, 01:56 PM
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Default Re: muffler/noise

Quote:
Originally Posted by lokerman View Post
where can i get a muffler that really quiets down a 2 stroke bike engine? mine is way too loud when im going fast. thank you.

The noise doesn't bother me as I'm almost deaf.....I realize this may be to my advantage but I'd really rather be able to hear it .....yanno ?.....from what my friends say it's much like a chainsaw but quieter....maybe a poo-poo pipe will help you ?

Laters,
Salty
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Old 09-17-2009, 01:59 PM
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Default Re: muffler/noise

Quote:
Originally Posted by BarelyAWake View Post
I would look into moped exhausts (tho the manifold will need a bit of tweaking to get it to fit) there's also "poo-poo" pipes, much like the stock one but with a much longer head pipe so the muffler itself is more toward the back of the bike, behind you instead of under

I dunno where to get a poo-poo, I'd check Spooky, I think they might have them, but a moped exhaust might look better and be quieter - if a little more work.

If you dig around the forum some - there's actually quite a bit on quieting these MBs, the intake is responsible for a LOT of the noise you hear. I found when I made a silencer for mine that it had been actually louder than my exhaust was.

Good luck man, I too like the "stealth" approach
Silent but deadly huh ?.....LOL !

Laters,
Salty
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Old 09-17-2009, 02:37 PM
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Default Re: muffler/noise

Quote:
Originally Posted by BarelyAWake View Post
I would look into moped exhausts (tho the manifold will need a bit of tweaking to get it to fit) there's also "poo-poo" pipes, much like the stock one but with a much longer head pipe so the muffler itself is more toward the back of the bike, behind you instead of under

I dunno where to get a poo-poo, I'd check Spooky, I think they might have them, but a moped exhaust might look better and be quieter - if a little more work.

If you dig around the forum some - there's actually quite a bit on quieting these MBs, the intake is responsible for a LOT of the noise you hear. I found when I made a silencer for mine that it had been actually louder than my exhaust was.

Good luck man, I too like the "stealth" approach

Thanks, that's good to know. can you point me toward how you silenced the intake? I want to take all approaches required, so maybe I'll do one of those moped or poopoo exhausts, as well as the intake silencer, except I have no idea what one of those even looks like or how it works(don't really know how a muffler works either, since some are super loud, like on harley's, while others are quiet).
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Old 09-17-2009, 02:50 PM
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Default Re: muffler/noise

hello, bicycle-engines.com they sell poo poo pipes along with some other exhaust pipes. i would also like to know more on silencing the intake witout losing air flow.
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Old 09-17-2009, 02:51 PM
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Default Re: muffler/noise

The really loud motorcycles are usually running straight pipe w/o any sort of baffle or muffler. Loud as ****, they can get away with that as their bikes are four strokes and only need a lil back pressure.

Our bikes use metal plates with holes in them inside the muffler as "baffles" to cut down noise, but not very well as you noticed lol Car mufflers use a combination of intricate passages and fiberglass batting and really long pipe length to get the almost silent effect, the honeycomb inside a catalytic converter is so restrictive it tends to do most of the silencing these days lol

Anyhoo, here's the link ya asked for, hope it's some help
Remote Airbox (& intake silencing) on the cheap
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Old 09-17-2009, 10:45 PM
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Default Re: muffler/noise

Thanks a lot. Now that I have some idea, it shouldn't be a problem. I may try to go even further and make it real big and quiet. If I come up with anything worthwhile, I'll post pics.
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Old 09-18-2009, 12:54 AM
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Default Re: muffler/noise

Look at a smaller sprocket like a 36T. You will be able to run the same speed as before but lower RPM.
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Old 09-18-2009, 04:06 AM
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Default Re: muffler/noise

of course you would sacrifice a lil bit of acceleration with a 36... one of the reasons I've put off that mod, another is I really don't wanna mess with that rag joint again lol
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