Which motor combo would you choose?

[pwrjnky]

My other son wants me to upgrade his truck to the Vilineon like his brother and myself. He has the titan now. Instead of buying him one.........I could give him mine and upgrade to something bigger for myself. Dad needs the superior truck!! I want something that will just drop in. There are a lot of threads on here about the hobbywing and the castle. Looks like they are both 4 pole where the Vilineon is only 2 so they would both probably be a step up. What would you choose? My truck is pretty well beefed up and rerady for anything that I throw at it!! Thanks for your input.

[DiggerPede]

The Castle Sv3 combo with the 4600kv motor or the same with the 3800kv are a couple good choices. They will be cheaper than the vilenion to. The 4600 will run faster but i'd suggest staying at a 2S lipo max, the 3800kv you can go up to a 3S with monstrous torque and speed.

I've never run a HW so can't really say if they are any good. But have heard good things about them at the same time.

[pwrjnky]

I just ordered some 3s lipos to play with so maybe I will look into the 3800. It's still bigger than the velinion so Dad will still be king of the hill! Will my traxxas/velinion gears still all fit on that motor?

[pwrjnky]

I just checked out the 3800 on ebay and it says max voltage is 2S.
Applications:
2WD SCT trucks on 2S
4WD SCT trucks on 2S
I'll go check the 4600

[pwrjnky]

no 4600 on ebay. only 5700, 6900, and 7700. I don't want to go too big!

[pwrjnky]

the 6900 combo can run up to 3S and still quite a bit cheaper than velinon. Just curious how it will be on the truck. Anyone else running running this??

[DiggerPede]

It can run up to a 3S max (3800kv). I run mine 19/83 on 2S which is plenty fast for me. Gets me mid-upper 30's which keeps me grinning from ear to ear just fine. I wouldnt go any higher than a 4600kv, if you do you will have to gear down to keep temps in check.

Have you checked Tower, Amain or etc for the combo's??

[pwrjnky]

I haven't checked those. I will look into them though.

[pwrjnky]

I've checked a few other places and all recommend a max of 2s on the 3800 so I definitely need something rated for 3s.

[pwrjnky]

actually just found the 3800 on sactles site and it says 2-3s so I stand corrected!

[reod12x2]

the reason they say the motor is rated for 2s only is becuase the sv3 cant handle that motor on 3s
if you look at castles site for the 3800kv motor it will say that it can take 3s lipo max

now for the gears fitting if you get the 3800kv motor with either the sv3 or mmp as a "combo(aka sct or sct pro)" it will come with a 5mm shaft. instead of the stock 3mm shaft(vxl-titan)...just check first

[pwrjnky]

Kind of confusing that the sv3 says 3s lipo on the side, but all the advertising says it handles "up to" 2s lipo. ?????

[pwrjnky]

Just spoke with castle tech and the esc is rated for 3S, but the 3800 motor is not. they said it can overheat easily. They recommended the 4600, but said the stock 19/86 gearing would be too much. They said to run more like a 12/90 and it would be faster that my Vilineon set up.

[pwrjnky]

this is getting too complicated. I was hoping to save a little and get a bigger motor, but maybe I will just stick with the velineon since it's what I know and just play with gearing.

[DiggerPede]

Hmmmmm.....weird. Did you tell them 2wd or 4wd for the Stampede? Like I said I mainly run 2S with that gearing and it barely gets warm. I do run an REM aluminum gearbox which does help keep it way cooler. But on 3S if you gear it conservative you can run it. It's just way powerful on 3s though. The 4600 is another awesome motor to run, really fast on 2S. But you will have to gear it down lower than the 3800. I promise you wont' have anything to worry about with either motor, and they will be faster than the Velineon. Mabye he was just protecting them. They do recommend pretty conservative gearing IMO. Them being 4-pole they do run way cooler. Maybe of us run, and have been running them for a while. Nothing new.

Whatever you do always keep your ESC/ Motor temps in check.

[mepster]

I never ran my SCT3800 on 3s but it was one heckuva fun 2s motor. I think the 3800 was designed specifically for 2s but I'm almost positive I've heard of people running it in a Pede just fine on 3s with conservative gearing and keeping an eye in temps. But it becomes a question of warranty I guess. The 3800kv is a 100,000 rpm motor so it says on the endbell. I think the one that is packaged with the mamba max pro has the 5mm shaft and is advertised as being able to run on 3s. So I think the SCT3800 combo was designed to be run on 2s for SC racing but the motor and controller can both handle 3s, just not so much together as a combo, or at least not without the forementioned mild gearing and keeping an eye on temps, but I think the catch is its not warrantied for 3s which is the controller can't handle that motor very well on 3s.

Back when the CM36 motors first hit the forum with the original mamba max controller there were lots of people here running the 4600kv (2-pole) motor on 2s and 3s and was in fact what castle was recommending if you called them at that time. IIRC the sidewinder sv3 is very similar in rating to the original mamba max. Now that the 4600 is a 4-pole motor it makes sense that it would be a great choice for the pede for 2s and 3s and it doesn't surprise me that castle would recommend that on your call.

You're right it is confusing. LOL to make it even worse I think castle has been telling people who call slightly different things about that combo since it originally came out. I know I've personally heard conflicting stories. So I do think that combo will do 3s in a light 2wd truck like the pede with conservative gearing, but I'm not sure they will honor the warranty on 3s.

[ksb51rl]

Castle is VERY conservative with their gearing and cell count recommendations.

I was until recently running a Mamba Max (original) / 2-pole (ancient) 5700 combo in an extended and widened Stampede running Masher 2000 tires and 17/86 gearing on 2S LiPo. The motor would get a little toasty in grass or in heavy off-road use, not surprising as it's geared for 50+mph. Given such conditions, the estimate is that you're pulling 30A average / 195A burst.
Change that to a 4600kv 1406 motor geared for the same speed (14/86), but on 3S & you're pulling 20A average, 130A burst.
However, I changed it to a MM/3800kv 1410 motor, geared 20/83 on 2S LiPo. Ok, not as "fast" as the other combos, but ±45 mph off-road was okay for me. I have not gotten the motor to break 100°F... and I was trying. The ESC is another story: it hit 155°F when I was really pushing it. Since I've had this unit up to 285°F that is not really concerning, but it does show that this current, larger, 4-pole motor pushes the ESC a bit.
FWIW, the estimate with the above conditions is pulling 25A average, 162.5A burst.

[gPlayer234]

I use the neucastle 5700kv with sv3 and the temps stay low on 2s and low enough on 3s. Tons of torque and speed.