Originally Posted by
blackmagic21
i dont rush break in i preheat all my engines i run novarossi, RB, LRP, ETC
this is the only engine brand that i use that has connectiong rod issues
the rod issues have been around a long time with axe rossi engines.
i did not have the problem with the original black magic and golden arrows
i have bought new "old" surplus just the new replacement p/s kits and rods
NOT SAYING THAT THEY ARE A BAD ENGINE i just feel they need to take a closer look at the rod maybe casting issues or binding issues with the brass and aluminum
every thing else on the engines are perfect
i think they are the best engines i have ever run
Sorry dude did not mean to offend at all. But I am also sorry I did not be more specific, but it is not just the connecting rod that takes a pounding, the rear bearing is also vert tight and requires some careful running before to much "rpm" is put on them as they will skate or groove the race, all it takes is ityy bitty imperfection on the race at high rpm to wreak havok on the crank and or case, our engines today are twisting some crazy rpms at the size they are .21 they spin what we use to spin tee dee .049 engines. Also when you twist them up when the engine is still tight, well the crankcase gets hot spots as well because the bearing is over heating as well breaking down the balls and or race of the rear bearing, which can also cause rod failure in some cases as the internals become out of alignment. It is so important to heat up todays engines, but a little to hot does as much damage as to cold, just not as critical.