here's a big pile of questions: need setup advice

[mk351e]

my quest for understanding continues............

so if a neu can safely spin to 60k, and I'm spending $255+ on it, then don't I want to be able to hit 60k rpm with it if i want? Not that I'm gonna run that speed all day long, but shouldn't I be able to hit that number or close to it sometimes? If not, why? If heat is the issue, will it really be? I can make some type of air intake, and it will be the finned can anyway. If so, then wouldn't a 1515 1.5D (2700kv) be the ticket on 6S?? Or the next 1515 down (2200kv)??

Reason is, I saw the 6s savage video (found that a while ago actually), and THAT was what made me decide to go BL! FAST on grass!! Also, I saw satheman's video, and while it was nice, it was geared real high (22T pinion) and STILL flipped like crazy (WAY too much for me) with a 1521 Neu 1577kv. That's why I'm thinking maybe I don't want a 1521; too much torque, AND it looks like the don't come with a finned can.

Feel free to correct all my mistakes!

[lincpimp]

Well, the faster you spin the motor, the less life you will get out of the bearings. Plus you do place more load on the rotor and the case. Power is not really an issue with a neu 1515. I would say that a 2000kv neu motor would be fine on 6s. Plus, you run into issues gearing a motor turning more than 40k rpm low enough to keep speeds around 40-45mph. I have a buggy that has a hacker c50 8l on 4s lipo. It spins around 45k rpm. I have to run an 11t pinion to get speeds around 40-43mph. That is the smallest pinion I can fit before the motor hits the center diff outdrive.

[MTBikerTim]

Originally Posted by mk351e

Like a Toyota or a Honda :)

If only Toyota and Honda made RC cars.

[Patrick]

Don't know what savage your talking about, but the e-maxx on 6s that jzemaxx linked to is mine. It's only a 1700kv 1515 2.5d (no more than 37 000rpm on 6s) geared 51/20 with e-maxx diffs and old 2 speed trans (12.5:1 fdr). Theoretical top speed of ~50 mph, but the amount of tire ballooning I had can throw the calculator out a bit, and I don't have anything to test the actual speed, but it was fast enough for those old bow ties. Very hard to get to top speed without it trying to wheel stand. I don't know how it would go being geared for 60, but I'd be more worried about my esc and batteries
That setup has worked well for me with that type of driving, but in smaller areas where you can't get to top speed and your doing lots of stop starting (racing) I don't use that gearing, it just puts more load on everything.
Your real car will drive well on a highway in top gear, but you don't drive around the city in top gear.

[mk351e]

yeah, I figured out it was an emaxx after I posted. Not sure why I thought it was a savage, but it was fast nonetheless! Thanx for that info!