Sidewinder SCT Question

[kazuaki]

I'm looking to put the 3800kv Sidewinder SCT system in my son's SC10. Is 3S an absolute no-no, even in a fairly light 2WD vehicle like this? I'm fairly certain it will be fast enough on 2S to have plenty of fun, but just want to know if we are really limiting ourselves with this setup. Currently he is running the RTR brushless system that came with the truck (2S, 3300kv), but it runs hot and the power is not all that impressive.

Thanks

[outlaw]

You really don't want 3S with this Combo on the SC10
2S is way enough power and you can gear to heaven with this Motor.
The ESC will not work on 3S anyhow (see Castles Webpage) you would ne a MMP for 3S.

[kazuaki]

Yeah, I suspect 2S may be more than enough, but the truck is used for bashing in large open sandy areas, so you can put a lot of power down. The webpage doesn't say the ESC won't work on 3S. In fact, it says it WILL work with 3S, but you should use a lower KV motor. The reason for my question is that I've seen the standard original Sidewinder running 3S with 4600kv motors. It also seems to me that the SC10 is fairly light compared to say a Slash 4x4.

[bruce750i]

The esc is rated for 3s right? Just keep the amps down, that should be easy with a light 2wd sc10. I've raced this system in my hyper10 4x4 on 3s fine, geared correctly. I also have ran two of the systems in a Emaxx on 3s.

[E-Revonut]

I have the setup in my sc10, I think you will find 2s to be plenty fast. I think on 3s you may find the truck airborn more than on the ground, since the body is essentially a kite.

[BrianG]

A couple issues with 3s as I see it:

1) simply increasing voltage and not changing anything else will result in more current drawn (and therefore power) and might be pushing the ESC current-wise. 3s should be ok on that motor as long as you gear down somewhat to keep amp draw approximately the same. But since people like to push things (and then wonder why they have heat and burnt ESC issues), I imagine CC suggested 2s max on the 4600 to help prevent people from doing stupid things like running 3s on the 4600 AND gearing up for stupid speeds. Can't forget we have people like on certain "other" forums who want to get 100mph+ as cheap as they can.

2) I assume the BEC is linear since it's meant for 2s. Running 3s may cause the BEC to get quite warm or even thermal over time depending on servo used, vehicle weight, tire size, terrain, etc.

[outlaw]

Voltage / Amperage doesn't matter that much on the SC10 with the SCT Kit
I drive my SC10 on our Indoor Track with 5000mAh Lipo about 35min !
the Motor / ESC never get hot

And the baby is CastleFast !
3S is just crasy

jm2c