How to compare gasengine size to outrunner ?

[lincpimp]

Originally Posted by stum

Neu 1512 and Medusa 60mm are for 1/8 buggy even some truggies, 1515 is for MT's and some truggy setups and will be just fine on a 1/5 2wd buggy with the right motor and voltage, though the 1521 would be better. The 70mm medusa is comparable to the 1515 and the 80mm is closer to the 1521.

I can safely say that a 1521 will not be too happy trying to move a 20+ lb vehicle at 40+ mph.