Maximizer X75 Maxx adapters for Nitro Stampede

[MaxxFusion]

Well this is the right place to get the right brushless setup and the steel diffs.

I have the Lehner 4200 and MGM 80 in my FLM rusty.

[Rusty4Ever]

Originally Posted by MaxxFusion

Well this is the right place to get the right brushless setup and the steel diffs.

I have the Lehner 4200 and MGM 80 in my FLM rusty.

I see the steel diff, nice, I have alum idler in now.

MGM 80 looks good too; I converted my old Rusty to a Stampede after I got my Tmaxx (I love the 3hr bashing sessions, from motor to servo cover nothing is stock, full rollcage, it's a tank). So I'd like to setup up the Pede for quiet "neighborhood" bashing. It was good as a Rusty with alum hubs & 5x11's at the wheels. BMS620MG on 6.1v (regulated) to turn, end points set.

I run 7-cell packs (2100-3300's, 23-33amps), as that fits my planes too, 12ga, deans, build my own 5A BEC's (to run BMS servos usually), & use inductors to rid any glitches (Hitec FM gear, but BL helis make "e-noise").

Lehner 4200 seems a popular choice, it's currently out. Good quality at a bit higher price than say a Feigao...both seem fine to me.

I see the Feigao 540 8S is 81A (can the MGM80 take this?)

Also I've heard the 380C's spool up faster (like a 8T,7T,6T) but the 540 has the torque (maybe a 380C-6L?, I don't see many L's or XL's here). Kinda of a toss eh? But the 380C might be more efficient (except for my Maxx wheels maybe). I'd like to stay under 80A full tilt (if possible) and still make the Pede with Maxx tires jump around for awhile...

Current setup with Masher 2K's is Futaba 330CR clone ESC (B1006, $30) and Orion 17x2 Method R ($15). Bashing hard (full throttle/brakes) I get 10mins on 7 GP3300's. Like to at least keep this runtime. Should be easy with the right BL motor right? Except this time I'm pushing the big Maxx meats so I probably just negated (if not worse) the BL motor efficiency I would get on my NIMH packs... then again the Maxx wheels don't seem "that" much heavier than the M2K's... haven't weighed them yet.

In short, 8-10min runtime (7 GP3300's) would be nice without having an overly hot motor/esc, with at least 16-17T brushed performance, using, & without killing my current batts; is this possible?

[Gustav]

Originally Posted by Rusty4Ever

In short, 8-10min runtime (7 GP3300's) would be nice without having an overly hot motor/esc, with at least 16-17T brushed performance, using, & without killing my current batts; is this possible?

The basic 4200 would be a real nice motor for you IMO.I can get around 8 mins from mine from 8 gp2200s so this will easily get the runtimes you want with alot more torque than a 15T brushed.On 6 cells the torque and acceleration is still there just not the speed,you'll see high 30's quite easily on 7 cells.I get 45 mph(gps) from this motor in a light xxxt on 8 cells.I'd go with a 540 for the bigger tyres,it'll like the load better.The 4200 is a great motor to have for 1/10th stuff,will run from 6 to 10 cells NiMH or 2-3s lipo quite happily.

[Rusty4Ever]

Thanks for the reply.

I've heard it takes around 8cells tho for the 4200 to really wake up. I've got only 7's, & they aren't exactly new either. My info on the 4200 is that it's a "up to 600watt", 45A BL motor. Unsure of it's "size" as well.

I know the Feigao 380C-6L is 1/8" shaft, integrated heatsink, & about 4900k/v and 69A. Half the 4200's price, no doubt the 4200 is higher qual. I've been told this longer arm 380C can torque similar to the 540S's, at a higher spool up rate. The BK7018 ESC is attractive to me because of price, & I don't think I can even go over or near 70A on my batts (unless replaced).

I did weigh the Masker 2K's on Traxxas rims vs T-maxx tires/foams on RPM Stablemaxx claw rims, barely 3ozs diff per wheel added, I thought it would be more, thankfully it isn't & my brushed motor can almost manage it without much trouble.

I just like to jump & bash my Stampede, so I gear it for quick bursts to hit a ramp; topspeed isn't important as I don't use it for that, 25-30mph is plenty & with 5.75" tires I gotta gear down on Stampede's trans anyway to get the accel... so a high K/V fast spool motor I'd guess is helpful if the longer armature can make the torque.

[Gustav]

Well you can't argue with the price of the 380c,plus i think they're in stock,4900kv would be as high as i'd go(don't think these are loaded kv values though).One thing i would say though is i personally don't buy into the faster spool up theory in a 2wd vehicle,for touring cars i can see the advantage but in a ST unless you're running spikes on grass you'll never have the traction to accelerate as fast as the 540 can spool up.partly why i suggested the 4200 is the runtimes and also the torque,the take off is quick from 6 cells.Having said that i think the 380c could work very well on the lower gearing you're talking about,i think a lower kv 540 would take off as quick though geared for the same speed(on a higher gearing).Remember you can gear a slower turning big motor higher so it doesn't necessarily need to spool up as fast to have the same acceleration and top speed.Just food for thought.

[Rusty4Ever]

Ability to gear the 540 can's higher tho doesn't apply to directly in my case right because I'm not into topspeeds? So for my quick bursts to my ramp either would probably do, but I'm suspecting the 380C (L) would do it at lower amps overall (I'm hoping).

Far as traction goes, I agree, 2WD is rather weak. But putting the Tmaxx tires on my e-Stampede has made it heavy, like a poor man's 2WD Emaxx, just on one battery/motor & lighter. Traction is decent. So heavy, it now prefers the "long arm" of my S600 airplane motor (these are great for $15, internal fan, last long, no heat, just not many RPMs) because of it's torque instead of my 17x2 540.

I guess for my app either 380-L/540 BL would do & both have plus and minus. Tuff to say what's better with so many variables. I believe I read on here someone who put together a e-Stampede with Maxx wheels?

[Gustav]

Originally Posted by Rusty4Ever

Ability to gear the 540 can's higher tho doesn't apply to directly in my case right because I'm not into topspeeds? So for my quick bursts to my ramp either would probably do, but I'm suspecting the 380C (L) would do it at lower amps overall (I'm hoping).

I was saying that a lower kv 540 motor(like a 4200) geared to the same speed as a faster turning 380(like a 4900)on the same voltage doesn't need to spool up as fast to give the same acceleration.Higher gearing ratio yes but not geared to a higher speed,if you see what i mean.:032:

I agree,i think either would work for you,i'd probably try a 380c considering the price.

[skellyo]

Originally Posted by Rusty4Ever

I believe I read on here someone who put together a e-Stampede with Maxx wheels?

A few of us have Pede with Maxx wheels. I'm working on finishing mine up this week with RPM Stablemaxx wheels and Panther Komodo tires. I'll be running a Feigao 8S and BK 9920 in mine. I also have everything that FLM makes in Aluminum for the Pede. It will be a bit heavy, but the 8S should do fine on it, especially with more than 6 cells.