Ok, I have done everything thinkable except change the exhaust and the gears on my 1978 puch maxi with no results. I still run no faster than 20 mph. It runs beautifully, but I just can't break that limit. Here is the setup:
1978 maxi e50 engine 1 HP stock with the intake drilled out to match my 14mm carb and manifold. 68 jet on the carb, stock air filter. I have cleaned the engine, the carb, the exhaust, the gas tank, and replaced the fuel switch and filters. I get great gas flow and good compression. I have 14 tooth front and 45 tooth back (I think 45, the count is off a little each time. I haven't actually taken it off to count it)
What do I do next. I don't need 50 mph, but 25 to 30 would be nice.
Thanks in advance, you guys have been very helpful in getting it running this far!