Piston stopper tool for engines with 10mm threads. Works on Zenoah G230RC / G260RC / G240RC / G270RC / G290RC / G320RC / G260PU / G260PUH / G231PUH / G231PUM / G260PUM / GZ25N14 / GZ25N23 engines. Also works on Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 / GP420 / GP460 engines. In general, fits engines with 10mm spark plug hole threads (for example, engines which use NGK "C" class spark plugs like the CMR7H, CR8HIX, etc). Threads into spark plug hole and stops piston from moving, allowing easy removal of flywheel and other rotating parts. This stopper is interchangeable with Zenoah part # 4810-96220 481096220, and with HPI part # Z966.
Balance props, wheels, spinners and more — with accuracy never before possible!
Airplane and boat props, car wheels and tires, clutch bells, ducted fan jet rotors, nose weights, spinners...all these and more can and SHOULD be balanced on Top Flite's patented Precision Magnetic Balancer. Its exclusive, nearly frictionless magnetic design helps you virtually eliminate damaging vibration – to reduce engine wear, protect radio components, prevent structural damage, lower noise and improve handling.
Both ends of the steel balancing shaft are ground to perfectly centered points. The shaft is held in place between powerful Ceramic 8 magnets, with only one end actually touching a magnet. But the shaft will support and balance objects weighing up to approximately 5.5 ounces (156g) – and propellers as large as 24x16!
Constructed of long-lasting, high impact plastic and nickel-plated steel, the Precision Magnetic Balancer can be assembled in just seconds – and disassembled just as easily for convenient storage. Its plastic shells double as a sturdy, 2-1/8" x 7-1/8" x 1-5/16" carrying case.
The balancer includes an 8-page instructional booklet that explains how to use it, how to correct out-of-balance props...even how to measure wind speed! Protected by Top Flite's 5-year limited warranty.