hi,
I came across a little trick that I have successfully used to quiet down my X-2 pocket bike by at least 30% - for only about $10.00 total and maybe 20 minutes of my time… Plus, there was very little effect on performance (in my case, it was a positive effect, though!).
I purchased a $5.00 muffler from my local hardware store, designed to fit Briggs & Stratton 5-8 hp motors, and fit it via a small connection pipe to my exhaust.
Now, every engine is slightly different, but on my bike, the difference in performance was actually a slight increase… This may not be the case for everyone, but I suspect the difference for most will be very minimal; this is not the point of the silencer.
I noticed a VERY obvious difference in volume and that horrible, weed whacker-like metallic sound, however, which has enabled me to ride my bike at night without worrying about disturbing the folks around where I live.
So, here are the directions for how I made my removable exhaust silencer!
1. Go to a hardware store and purchase a Briggs & Stratton 5-8 HP exhaust silencer (or its generic equivalent).
2. Get an 8-9” long piece of 7/8” I.D. steel pipe with a 1/16th” wall, and test by fitting it around the inner baffle of your muffler (see PIC 1). It should be a VERY tight fit, and you should have to twist it a bit to get it on. Once you’re sure you have the right size pipe, cut it down to 3-4”.
3. It’s time to affix the pipe to your newly-purchased silencer. There are a few ways of doing this, such as hammering the pipe you just got over the threaded end of the silencer (you could use a bit of J.B. KWIK* on the end of the silencer you’re shoving into the pipe to help hold it tightly). It would also be wise to use a small pipe clamp where you join the silencer and the pipe… I chose to have mine welded, which should cost you about $5.00 at any lower-end, local muffler shop (see PIC 2)
4. Once you have your silencer with your 3” long pipe attached to the threaded end, you just have to shove it around the inner baffle of your pipe. I used a bit of high-strength, extremely high-heat resistant silicone glue around the inside of the silencer’s new “extension pipe”, and forced it around the inner baffle of my stock muffler.
5. Let the glue cure overnight, and if everything is done right, the next morning your pocket rocket should be far quieter!
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davison
Indiana Drug Addiction
