ok i have a 26 beach cruiser with a 66cc grubee skyhawk 2 stroke with a spookytooth cycles 36 tooth sproket on it.... im only getting like 30 and then 35 down hill.. i want to get up to about 40 or faster on flat land... any ideas?
You're simply reducing back pressure, while the stock muffler can be unduly restrictive - it's only a marginal improvement at the cost of a louder ride... check out "expansion chambers" if you want the biggest performance return for the moneyMy instructions call for drilling holes in the muffler to dramatically increase horsepower ??? I am too scared to do this yet. How does this work and how much more power could we expect?
While ya might get cleaner fuel, high octane gas is for high compression engines... which these china kits are anythin' but lolWhat about using an octane booster or airplane gas?
i like the three speed hub idea thats a good one.. but will it hold in the pressure of the motor?And get a shift kit and at least a 3-speed hub....you might even hit 50mph
its already jetted for this elevation and a cns carb wont help much cause im running a rich mix anyways.... but wheres a good plae to find a cheap expansion chamber exhaust? and high performance air filter? i know of sick bike parts and spookytooth.. anywhere else?Port it, add an expansion pipe, rejet the carb, higher flow air filter. Maybe upgrade to a CNS carb. A nicer intake will help for flow, too. Beyond that, you're looking at modding on a Puch E50 head.
Edit: oh, and if you're prepared to go 40, you'd better invest in some sprung forks and make sure you have good brakes and good hubs. Otherwise, you're liable to go from 40 to 0 in a rapid and uncontrolled fashion.
the only advantage to a cns carb is that u can regulate ur fuel mixture for higher rpmsGasbike has an expansion pipe, but it's not much cheaper than the SBP kit, and it's just one of those banana ones with no silencer. You might be able to find a pocket bike exhaust on eBay cheaper, and modify it to your liking.
What size jet? Did you drill and solder it or replace it entirely? I'm confused on why a "rich mix" would negate any benefits of a CNS carb, too. Care to explain?