will the 80mm medusa fit in an erevo?

[blueb8llz]

13lbs with or without the battery?

[kostaktinos_mt]

a larger motor does not neccessarily mean better efficiency [lower temps]...
on the contrary, iron losses usually increase with the motor size...
it doesn`t work like a brushed motor...

a 60mm medusa is just fine for the erevo imo... excessive torque is a second reason to avoid "larger-than-neccessary" motors...

i guess it comes to one`s personal taste, so that`s just my own 0.02...

[stum]

Originally Posted by kostaktinos_mt

a larger motor does not neccessarily mean better efficiency [lower temps]...
on the contrary, iron losses usually increase with the motor size...
it doesn`t work like a brushed motor...

a 60mm medusa is just fine for the erevo imo... excessive torque is a second reason to avoid "larger-than-neccessary" motors...

i guess it comes to one`s personal taste, so that`s just my own 0.02...

60mm is too small and will overheat on even a fairly stock e-revo unless you keep it geared for around 38mph, trust me I raced w/ the 60mm and toasted some. The exception would be a VERY low kv w/ 6-10s lipo may hold up better but 4s and 5s don't cut it. Really the 70mm is ideal... for the size and weight of the e-revo. If you have too much torque you simply need to reduce the RPMs (less voltage but not under 4s) and balance btw gearing up and heat. Get lower KV motors to start and keep your voltage for best results! If you want low torque plan around 29 to 31k rpm, if you want moderate torque shoot for 32k-38k, and if you want sick torque go w/ 38-50k as it will just lay it down.

[suicideneil]

Originally Posted by blueb8llz

13lbs with or without the battery?

With; if I take the wheels and batts out, it only weighs about 6-7lbs...

We dont use the larger motors for better efficiency, no arguements there, we use them because they produce more torque/power; efficiency comes down to design and construction more than anything really (and kv rating vs voltage I guess).