I know everyone has a opinion..so here goes..In the world of very small motors is there a motor that seems to stand out in performace and duriblity..like the small block chevy is to car buffs.Small cheap and practical..This also needs a good clutch and drive system..needs enough power to pull a 250lb guy around town with ease..starting to look at bikes. thanks for any input.....bill
Hey Bill,
JMO, imagine yourself in the 1950's. The flathead fords,GMC-6's, Hudsons and hemi's are the popular mills. The 265-283's are the upstarts, and breaking all the speed and endurance records.
Fast forward to the present. Frame-mounted chinese engines and rack-mounted motors are popular. Not many people are hopping them up, because of info and parts availability. Many enthusiasts are simply not interested in hotrodding, and choose to run stock engines.
Enter the 47cc pocket bike engine. With reed induction, breathing is superior to other generic engines, and promises great potential. This engine is smaller in dimension and lighter than most powerplants. In stock form and geared for 11,000rpm, this high-revving pb engine would probably spank most engines. Performance parts are readily available to double its hp at relatively inexpensive cost.
With this much excess power at such high rpm, safety and reliability is undoubtably compromised.
Ya make your choices.
One can compare the 47cc reed-inducted pb engine to the 265-283-327-350 engines of yesterday. One of its unproven feature is its dependability, and whether it will withstand gross owner abuse.
One may also compare the higher-winding, more powerful ITALIAN engines with the modern-day LT1,LT4, C4 and other exotic SBC engines.
I have 2 projects involving pocket bike engines. One is a 47cc engine with big bore, high-perf reed kit, DELLORTO carb, timing key, ADA S1 tuned pipe. It will be mounted onto a 1976 SCHWINN HEAVY DUTI cruiser bike with STATON gear chain drive.
A stock POLINI 4.2hp with tuned pipe goes onto my SCHWINN SKYLINER comfort bike, with my project "RODGER Box" gear-reduction and 7-speed cassette.
No pics available at this point. I might post when my projects are completed.
Myron