RCU Forums - true turn spinners

i would be wary though. they have absolutely wonderful customer service and their products are very good, but they use a MUCH thinner spinner made of 6061 aluminum (t6, the strongest grade of aluminum. aircraft grade) while other brands usually use a thicker spinner of the same or lower grade aluminum. that means that while these spinners are light, you can't overtighten them or they will buckle. you also can't use smaller spinners on larger four strokes because their compresion will tear them apart. they suggest a two finger rule for tighttening them (use your index and middle finger and tighten them that way to prevent overtightening) but i have even overtightened them that way. the good thing about them is they absorb a lot of energy in a crash saving your engines crankshaft, bearings and other parts.