In a buggy, Large Motor (1515) or Small Motor (1512)? - RC-Monster Forums

**In a buggy, Large Motor (1515) or Small Motor (1512)? -** 03.18.2009, 09:37 AM

In a few days my Losi 8ight 2.0 buggy will arrive and I'm trying to decide what I want to run for a motor. In my Truggy and Monster truck I've been running 1515/1y motors. To be honest I'm fairly certain that I'll either just run one of those in the buggy (because running 3 classes is a bit insane) but I wonder what you guys who have run buggies have to say. Is a "big" motor like the 1515 too much for a light 1/8th buggy? What would the benefit of moving to a 1512 be? Is the weight difference that much of an issue (about 70 grams)?

Thanks for any input you guys have.

rootar · 03.18.2009, 01:23 PM

weight difference not worth it, but driveable difference is much more noticable, ive ran a 1515 in my buggy and it has 1512 in it now, its alot more controlable on the track.

if you already have a 1515 i wouldnt bother changing unless you wanna go for a light weight setup and your seriously racing.

03.18.2009, 02:46 PM

In what way does the 1512 drive differently than the 1515?

While I've got a 1515, using it in my buggy means shelving my E-Revo. I may pop for a new motor and if I do I just want to get the best motor possible given the application.

SpEEdyBL · 03.18.2009, 05:22 PM

If a 1512 weren't better suited for buggies, why would castle even bother releasing the 2650 in addition to the 2200? Of course some are getting better results with the 2200 on the track, but neither motor is really ideal for 1/8 buggy racing anyway.

rootar · 03.18.2009, 06:57 PM

the 1515 in a buggy is BRUTAL you can gear as high as you want itll easliy handle it, while the 1512 youd need to gear it correctly, its not so torqy it tears tires off wheels every race, and its alot easier to drive. the 1515 size is just over kill, the 1512 is the perfect motor for a buggy.

jzemaxx · 03.19.2009, 11:38 AM

I prefer the 1515, as you can gear to the moon so voltage is not as critical. Also weight difference is almost null. The punch can be controlled via Castlelink anyway so driveability is the same. Run time will be about the same as well, since the 1515 will draw less amps, since it works alot less to get the buggy moving.

BrianG · 03.19.2009, 12:00 PM

Punch control simply lengthens the time it takes for the throttle to reach the user's set throttle. It definitely help off-the-line controllability, but some serious racers don't like this because it limits the responsiveness or effectiveness of burping the throttle for close jumps. PC is fine for bashing though, or for the casual racer.

Even the 1512 has plenty of leeway for gearing. True, it doesn't have the gearing range that a 1515 does, but more than enough for 45mph+ speeds.

jzemaxx · 03.19.2009, 12:01 PM

Quote:

Originally Posted by BrianG

Punch control simply lengthens the time it takes for the throttle to reach the user's set throttle. It definitely help off-the-line controllability, but some serious racers don't like this because it limits the responsiveness or effectiveness of burping the throttle for close jumps. PC is fine for bashing though, or for the casual racer.

Even the 1512 has plenty of leeway for gearing. True, it doesn't have the gearing range that a 1515 does, but more than enough for 45mph+ speeds.

Can you control some of it with timing?

BrianG · 03.19.2009, 12:41 PM

I suppose, but timing has little effect on performance - at least from what I've seen and experimented with. Punch control has the biggest impact, but like I said, serious racers can find it more trouble than it's worth.

mjderstine · 03.19.2009, 12:58 PM

Quote:

Originally Posted by SpEEdyBL

If a 1512 weren't better suited for buggies, why would castle even bother releasing the 2650 in addition to the 2200? Of course some are getting better results with the 2200 on the track, but neither motor is really ideal for 1/8 buggy racing anyway.

if neither the 1515 or 1512 or the CC2200/2600 are ideal for using in a buggy on 4 cells, what would be your suggestions?

i am in the market for a new motor and it seems that on 4 cells in a buggy at stock gearing (or close to it) 2600 seems to be the right thing to use.
am i way off?

03.19.2009, 07:38 PM

I've been looking into this recently as well. 2000-2200Kv appears to be the ideal range for racing based on the info I've seen. Can size 36-40mm diameter (add a few mm to account for fins/heatsink), 50-70mm length. 4-pole motors preferred, especially if you want to run a small 36-50.

You would have to gear-up the 2000Kv motors for larger tracks.

I've seen folks mentioned they like the speed and torque they get out of the CC2650 on smaller pinions at large tracks but I've also seen some not quite as happy with the battery consumption.

I've yet to run any of this stuff so anything I've said is all just bench racing and the conclusions I've arrived at for myself. Sometimes it's fun to just put the biggest baddest motor in there and be done with it. I'm more of an optimize the system for the intended purpose kinda guy.

The Dan · 03.20.2009, 02:36 PM

For racing? Heck, I wouldn't even bolt a 1515 into a truggy. I would recommend running the 1512 in a truggy and a 1509 in a buggy. But like others have said, if you want the flexibility to go faster with gearing, you have to go with a big motor. The point I'm trying to make is that for racing, you don't want too much power, and therefore should run a smaller motor.