SCR8p did you notice a big difference with the dynotech arms?
do you mean a difference between the dynotech arms compared to the rpm worlds arms? or the difference between a stock rc10 compared to the one built with these arms to run b4 rims? well, i'll just answer both.... i guess.
to me, the dynotech arms feel lighter, although i never thought of weighing them to find out. they're also more ridged compared to the rpm arms.
as for my car compared to a stock rc10, i really don't know. i've only raced offroad maybe 3 times since i started racing (1991), and only one of them was with a rc10 (in that same year). so, i really can't give you any good feedback about it. i've only had my car at one race, the 08 v-nats, and i think my car was the only one there that was setup with this configuration. i finished 3rd in the b-main. but, if i'd had more practice/setup time, i might have done a little better........ who knows. maybe not. the top 2 cars at that race where pretty much stock rc10's, though.