Save My Insanity!!

[lincpimp]

Motor speed is low on the 1518 on 4s. I would go with the 1515 2200kv for 4s. Your gearing will have to be very high on the 1518 on 4s and will pull alot of amps on startup. The 1518 is a 6s motor, as is the 1717. I have run all of them on 6s, including the 1515. 6s is where it is at 9ask your friens, boy!!!) but if you must run 4s go with the 1515 2200. Same motor the flux uses. Motor rpm needs to be in the mid 30k rpm range for good performace when gearing a heavy MT for 40+ mph.

This needs to be stickied. I vote for this to be stickied. Would someone near the RCM store please make a sign and picket for me, I will pay you back, promise.

[RC-NUT]

Crap. Well I placed my order yesterday for the 1518. Well I'll either spend some money on the 1515 or buy a couple of 3s packs. Probably batteries.

[Nard Cox]

Originally Posted by lincpimp

Motor speed is low on the 1518 on 4s... blabla ... Motor rpm needs to be in the mid 30k rpm range for good performace when gearing a heavy MT for 40+ mph.

I agree with the last part, so that's why 5S is also valid option (33.300rpm @ 3.7v). The 1520 and 1717 would be better off with 6S.

(very) General rule of thumb:
2200kV< = 4S
2000kv = 4S / 5S
1800kv = 5S / 6S
1600kv> = 6S

For some reason I don't like running things on the edge of their capabilities like 6S, though I think I'm going to with my 1717 in my Savy XL.

[RC-NUT]

You guys are killing me. So if I run 4s it's going to be a dog and 6s it's pushing it's limits at 39,000rpm.

What's misleading are the articles that are published on the Flux 2200 and the Flux 2350. People run the 2200 on 6s all day long and it's an animal. The 2350 is supposed to be a blast with 4s. With that said I was looking for a motor above 2200 so I could run 4s with lots of power. I was guided into a lower kv so I went with the 1800kv because it would be great on 4s and crazy on 6s. Now I'm either under powered or over powered.

I'm going to go buy a 1717 and just try both on 4s and 6s. Which ever one I don't care for I'll sell and try to break even.

[RC-NUT]

Ok. I ran the truck for the first time this weekend on 4s. I actually had a blast with it. At 12.3 pounds it's not a speed demon on 4s but very torquey. It will do rolling wheelies with no effort. I ran for 35 minutes on 3800 packs and still didn't reach the LiPo cutoff. I have a feeling it's under geared. I'm running 17/49. The motor was barely warm.

My buddy has the same 1518 in his E-MAXX and was running 6s. Holy crap was that out of control. I can clearly see the difference.

My 1717 arrived yesterday so I'll play with that once I buy some 3s packs.