ORIGINAL: STEVE L
Joe after 2-3 hours engine running time make sure you adjust the valves and give it a good wrench check out to make sure every thing is still OK. As well do it now ( NEW) and I bet you will find a motor mount loose. Or muffler that may need new Nylon tape installed. Just remember if you loose a carb screw or something on the engine - the turn around time to get one may be two to three weeks with Horizon. I may have to try and balance my tru-turn spinners because of you And see if I can get it true thanks . I may be asking you a few questions if I am doing it right? Seems like a plan. SL
Steve, this engine is well seasoned. Its now in UCD #4. With the last three crashes it has been sent out, resulting in bearing changes each time as well as valve setting and gaskets. Very faithfull engine which I never imagined could run any better, untill I installed the regulator. WOW The spinner thing was well worth the effort. Other four stroke owners noticed the difference right off when I ran it up. One thing that was noticably missing was the way the vibrations would "drum" through the wing and airframe. The balance is not complicated. Back plate is balanced first, if not then the cone is a waste of time. Once the backplate is done, assemble the cone and start to remove from the inside of the heavy area. If done correctly the cone and plate can be assembled in any sequence without fear of imbalance. It lengthens the process, but I cannot stress enough to go slow and remove SMALL amounts. If you go to far, than you must start all over or possibly worse, purchase another of these costly items. Good luck and I'll wait to hear of your progress. Joe