motor suggestions
 

Hello I need a little help. I have a Hyper7 converted and I am going to race it. The problem is the motor I have is way over kill. could I get some Ideas on what I should have gotten to put in this buggy for racing. it has the following

1512/1Y/f 2750kv

6000 mAh 25c 4s1p 14.8v

mmm v-3

i personally like my 2550kv, just turn the epa down to make it as fast as you can handle

You have the motor already and it's a good/expensive one. So, I would suggest doing what you can to use it. First, gear down (12-13T pinion). That alone will slow the setup down. Then, to tame the immense torque from such a low gearing, turn the punch control wayyy up.

I am currently running a 12t pinion and have everything set to handle the motor but its still way over the top. Would the new "castle-neu 2200 kv" motor be a better choice? or the losi 1700 kv Xcelorin motor

Keep your motor and turn the punch control up (ESC setting)

Well I turn the punch way up and adjusted the epa down. A little better in the rocket department but heres the temps motor 180, esc 160, battery 125. what do you think

If you were going to put the motor in a hyper, i would say go for the CC 2650 motor. It is the one made for a buggy on 4s. Maybe it's just me, but it seems like the perfect setup. 4s, MMM V3 esc, on a neu motor. The kv is only 100 higher then the CC motor. You are also running a smaller motor then the CC one that is included with your esc. Not knowing you, or your driving abilities: maybe you need some more time getting used to the power? Do not take offense to this, I am sure i would do horrible if i ever did enter a race. But as far as the setup goes, it all seems good. At least IMO.

edit: for a neu, that seems a bit high (temps wise). esc also. For now, i would blame that 6000 mah battery. That's quite a bit of playing time. :yes:

Dare I say, try a 3s lipo instead of 4s- that would lower the speed while keeping the rpms at an acceptable level (30k), you would just need to re-gear with a larger pinion to hit your ideal speed of about 35-40mph say, or something in that region. If you dont have a 3s lipo, a cheap ebay/ hobbycity item would do just for testing purposes- no great loss if it goes **puff** or doesnt work out well in the temps department (thinking esc/ motor temps might possibly not improve due to higher gearing load and fewer volts, but you never know...).

please explain why my set up is a good one and how that would compare to a lower kv motor set up? I guess I'm not understanding this.

Lower kv setup would have less performance. 100kv is not much. Doubt it would make a big difference.

Basically in short, your setup seems like the typicle setup racers use. just looking by the specs i would say that you're good to go...

hard to say without physically being there though.

I run the MMM 2650 combo in my Jammin buggy on 3s and 4s. Both setups are geared at 41-42mph. I have great speeds, great acceleration, and cool temps.

Surprised a 3s can actually move a buggy along! i'd love to see a vid of that. But i have seen videos of a 4s buggy on a 2600-2800kv motors, they look fast, don't get me wrong. I just can't help but think that maybe he's not used to the power. One more time bugman, i don't know your personal driving abilities, or how long you've owned your buggy for. But my point was that most people (not everyone) runs a similar setup to that. Now if you were running a buggy with a 1521 on 6s, i might be a little worried. But aside from that, your top end should be around what the nitros are, and just have great torque. Maybe just more driving practice? hope i am not offending you by saying that. keep in mind i have never seen your driving. :yes:

I witnessed NS's buggy today, it does great on 3s lipo. Motor and esc temps were good, and overall power delivery was very raceable. Plenty of power, but not over the top. I was surprised by the performance, the MMM and 2650 motor seem to do a great job with 3s and the efficiency is quite high.

I second the idea to try your current setup with a decent 3s lipo, bugman.

The CC2650 is a rebuild of the exact motor that he already has.

There are practically books of information on the rc-tech forums on what motors are ideal for racing. The motors of choice for 4s were UNDISPUTEDLY the neu 1512 2.5D 2050 motor and even the 1512 1.5y 1850 kv motor for short tracks. Now that Tekin has come out with their T8 motors, (the 4030 motors are the same size as neu 1512 motors) many who have a 2.5d or 1.5y neu are switching over, and unsurprisingly the motors of choice for 4s are the 2050 and 1900kv motors which are 2.5D and 1.5Y winds respectively.