Speed runs 2200 or 2650?

My buddy argued me down that the 2200 is better for speed runs I say 2650 so let me ask some pros that have been doing it longer.Can the 2200 out gear the 2650?

[brian015]

Originally Posted by anunaki

My buddy argued me down that the 2200 is better for speed runs I say 2650 so let me ask some pros that have been doing it longer.Can the 2200 out gear the 2650?

As has been discussed in your other thread, there are a few variables to consider: size of motor, kv, voltage, gearing (also size/weight of vehicle)

The 2200 is a larger motor, so it can put out more power. With the proper voltage and gearing, it should be a better motor for a speed run in an 1/8 scale vehicle. (However, if you were asking about speed runs in a 1/10 scale vehicle, the lower weight of the 2650 might make it the better choice.)

[magman]

I can help with this. In my mbx5 on road I run the 2200 on 5s and it flies. I have it geared for 50+ or so and it only gets warm. My thoughts were simple...put in a bigger motor in the car than I intend to need especially doing speed runs. I also have a 1520 and I am temped to try it to see just how fast I can go

Just my 2cents

ques.Ok brian015 will the 2200 be faster than the 2650 on 6s which one wil get top speed faster?ques#2.How much more faster is the 2650 than the 2200 on 6s somone give me some facts please greatly appreciated fellows.

[brian015]

edit


Your answer is simple: it depends on how you gear it. If you gear both the 2200 and 2650 the same at 6s theoretically the 2650 would go faster - but you don't need to gear them the same - you could gear the 2200 higher because it is a lower kv and it is a bigger motor.

What will actually work without overheating??? That must be determined by trial and error. You can look at other people's setups and get an idea of what can be achieved.

[MiamizFinest]

You gave up offroad already?

Originally Posted by brian015

YOU NEED TO USE THE TOP SPEED CALCULATOR: http://www.scriptasylum.com/rc_speed/top_speed.html

I normally don't shout - but stop asking us questions you can answer yourself with a little work.

Your answer is simple: it depends on how you gear it. If you gear both the 2200 and 2650 the same at 6s theoretically the 2650 would go faster - but you don't need to gear them the same - you could gear the 2200 higher because it is a lower kv and it is a bigger motor.

What will actually work without overheating??? That must be determined by trial and error. You can look at other people's setups and get an idea of what can be achieved.

Ok sir please fall back from my questions no preshure thankyou

Originally Posted by MiamizFinest

You gave up offroad already?

no sir you want to race on road for some c notes premo?

Originally Posted by magman

I can help with this. In my mbx5 on road I run the 2200 on 5s and it flies. I have it geared for 50+ or so and it only gets warm. My thoughts were simple...put in a bigger motor in the car than I intend to need especially doing speed runs. I also have a 1520 and I am temped to try it to see just how fast I can go

Just my 2cents

Thanks for your help bud

[magman]

Well I know that the 2650 on 6s will spin over 50-52K rpm and the 2200 will spin in the 40-44K range so for longevity the 2200 will be your best bet. The 2650 may be faster, however, it won't last as long spinning that fast

Originally Posted by magman

Well I know that the 2650 on 6s will spin over 50-52K rpm and the 2200 will spin in the 40-44K range so for longevity the 2200 will be your best bet. The 2650 may be faster, however, it won't last as long spinning that fast

Ok now think about this what if I advance the timing to high wont this be techniclly adding kv's to the motor?

[Semi Pro]

Originally Posted by anunaki

Ok now think about this what if I advance the timing to high wont this be techniclly adding kv's to the motor?

yes it will but timing advance wont make up for the difference in kv

here is something else to keep in mind, the 2200 makes more torque, thats going to shorten the life span of the drive train on your car faster than the 2650

as for the 2650 turning at 60k rpm, thats not a big deal, the only part that you need to worrie about is the bearings, if you service them often that 2650 will be happy to run that fast

another thing to keep in mind is the motor will only be revving that high for seconds at a time, if it ever even makes it to max rpm

case in point we have been running a castle 9000kv motor on 3s with no problem for quite some time now and i have a 7700kv motor thats lived threw 2 years of 4s in a mini revo and a touring car.

as long as you service the bearings and watch the temps the motors will be fine


( *FYI this voids your warranty )

Best info I've gotten mann thanks really informative I made some speed runs
long time ago and as I brought it by the whole car imedietly locked up
And would not roll at all is this bearing failure in my 2650 ?

[snellemin]

The 2200kv motor can outgear the 2650, but that doesn't mean it will be faster when the same voltage is being ran on both the 2200 and 2650 motor.

Running 6S:

The 2200 will be able to run a smaller spur and a slightly bigger pinion vs the 2650 motor.
Top speed of the 2200 might be only few MPH more vs the 2650 motor.
In a drag race, the 2200 will be faster if you can control the start up power.
Turning a big pinion with the MMM is iffy vs the smoother Tekin, from a standstill(both sensorless). However, the MMM puts outs more power. So pick your poison.
Stick with 10 degrees of timing. Use timing advance only if you run out of gearing. More timing means more heat in the ESC. Cooler ESC's are more efficient.

From personal experience, I find that Delta wound motors are better in a drag race. Speed runs either Wye or Delta will do.

That's why you're my friend boyyyyyy you shure got this rc stuff sowed up!!!!!!!