Well it looks like Blasterparts.de is about to release some motors that should fill the aftermarket gap and fit the bill for what I had planned.
According to their facebook page they are about to release some low amp 130's with ball bearings and carbon brushes, designed for their "voltage upgrade" batteries, or any 3 lithium (crapfires, imr's, blasterparts batteries, worker/coolook batteries) aa sized batteries and a dummy spacer battery.
If there are no firestrike/strongarm specific springs that are stronger than 7kg, what other nerf springs fit the firestrike well?
I've seen 8kg swarmfire springs in firestrikes a few times, but want something stronger I believe.
Please help me track down this spring for my firestrike
It looks like (from what Worker says) the diagonal groove wheels "increase accuracy" while there straight grooved wheels "increase power", but I will wait to see some first hand reviews before replacing my older white worker flywheels with newer black worker wheels