EARTH SURFER PRODUCTS

DYNAMOMETER RESULTS

THE RUNNING DYNO. THIS ENGINE IS NOT MAKING 18HP

THIS MARINE 29.5CC PISTON PORT ENGINE MADE 6.75hp @ 15,900 RPM WITH THE "STOCK G260 SEMI-CALIBRATED" DYNO SET UP. THE "DYNO EFFICIENCY LOSS" FACTOR WAS BUMPED UP IN THE SOFTWARE FOR THIS PARTICULAR DYNO RUN (VID BELOW) TO MAKE THE DYNO BRAIN THINK THE DYNO MACHINE HAS MORE RESISTANCE, THUS READING MORE TORQUE AND HP, BUT ONLY IN A COMPUTER FILE.

Dyno note. ESP may own the best dynamometer in the world for the RC Zenoah engines (Land and Sea Water Brake Dynamometer with a ESP engineered drive system), but it still, like every dyno we use, has no “absolute accurate” means of calibration. What is calibration?
You calibrate your bathroom scale to “Zero” (A “known value of weight”-- with nothing on the scale) before you step on it. You calibrated your bathroom scale with a “absolute known value“,--of “Zero“,--- but we don’t have a engine that makes a “absolute known” amount of power to calibrate our dynamometers, and “Zero” will not work here, as it means nothing is spinning.
The ESP dyno is calibrated with a stock Zenoah air cooled G260 engine, to 2.95hp at peak, as Zenoah---- “claims“ (Freshly broken in and jetted as well as can be with out an exhaust system or EGT gauge). Any other dyno will get different numbers because of a lack of “absolute accurate” calibration (like this dyno--only using a G260 for calibration),--or no calibration at all. A competitor may claim higher HP with a different dyno, but that does not mean it is true.
If no accurate calibration is used, it is very unlikely the dynamometer will be accurate. It is highly probable the same engine and set up will read up to 1.0 hp (or possibly more) different from dyno to dyno. 
Only when you hit the race course, with a optimized set up, will you really know what is faster.

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