least expensive bicycle engine modification for performance

You can roll your own pipe if you have a welder not near as pretty as a factory made one but for me it was fun.

This homemade pipe has the muffler built over the end just a can over the stinger and a1/2" hole with little tail pipe sticking straight down.

I just couldn't resist you need a helmet if you feel the need for speed. Please be kind as my feeling get hurt easly.

great pictures norman nice job. i need me a helmit like that beer and chips the coneheads lol

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Like i said lawn mower muffler lol.... Not much to these.

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visit my blog if you dare http://chinesekitmotorbike.blogspot.com/

Full novel on the blog in serial form.

it has to have a beanie prop on top

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visit my blog if you dare http://chinesekitmotorbike.blogspot.com/

Full novel on the blog in serial form.

A expansion chamber will give you the best gains on low, mid and top end but the cheapest would have to be sprocket change. Depending if you're looking for either more low or top end but not both.
I'm digging the helmet Norm!

I'm playing with making custom silencers for the pipes you guys are putting on your bike let me know sizes I'll see what me and the Kat can come up with Rufus is getting a little white and needs a good petting.I relly like the pipe but I'l bet it wasn't cheap.
norman

I replaced my spark plug wire and wow what a difference in starting and the idling smoothed out too. For those who don't know, its as easy and unscrewing the wire out of the cap and CDI box. Cut a new piece and screw it back in. I used a piece of a VW Hi Performance Silicone wire and I am glad I made the change. I can no longer kill the engine with the choke, guess I will have to hook up the kill switch now!

Wow....that must be a drastically better spark.....I guess I'll have to try that!

Thanks for the info.

Andrew