Where to get a drive sprocket to fit an eTek/Mars

[frodus]

Exactly.... Mars/Motenergy markets their 0708 and 0709 as Etek motors..... I had no clue which you're referring to. If you're truly speaking of the original B&S Etek, then yes, 48V is probably about it for that motor. I've not seen a curve for 72V on that (nor at 48V for that matter).

If you need 72V, the Perm and 0709 from Motenergy are rated for 72V operation, and as you mentioned, that's dependant on temperature and current as well. The even better solution is an Agni 95R Reinforced motor, they're made for higher RPM... and overvolting

[Njay]

Exactly.... Mars/Motenergy markets their 0708 and 0709 as Etek motors.....

A common confusion, but actually not true . It is the retailers who name them "Eteks"; Motenergy never used those terms and actually discourages their use as far as I now ("Etek" is a trademark from B&S).

There's only one Etek, the original B&S Etek. The Moternegy are MExxxx. ME0708 has performance equivalent to the Etek (but 42% more weight!). You can find some Etek curves on-line (not generated by B&S but by some other companies, I think), but here's one (with some presentation changes I made for inclusion in an article):



I'm going to squeeze this old Etek, then we'll see. If it blows, the other only motors worth considering are the Agnis yes, or the LEMCOs (roughly same tech), but I'll have to save a ton of $$ for that.


update: changed "eTek" to "Etek"

[frodus]

touche,

it's EMS and a few others that call it etek.