RX8 or MMM combo?
 

I'm building up another Hyper 7 (slowly but surely) but I don't know which powerplant I want to put in it. Most everything I bash with uses a MedUsa motor but I feel like doing something different for this build. I've already got a MMM that I run in my Muggy and it's a good ESC and the 2650 combo would be good for my use, but I'm tempted to try out the RX8 combo since I already have the MMM. I don't like how short the warranty is, I don't care for sensored motors, and it costs quite a bit more than a MMM combo but it sure is tempting to try one out. I'm building this one to be an offroad-only basher (my TQ is onroad, so the PCR will be offroad) and all I really need is enough power to bash with and stay cool. I like my stuff overpowered but I think with this I'll take a more reasonable approach so it'll be easier to bash.

For bashing purposes only the MMM combo will suit you well. I too am tempted to get a RX8 combo but for racing with my truggy. A sensored system is undoubtedly smoother and better for racing.

The beauty of the RX8 is that it is a sensored system only at start up, making it start perfectly every time, but it still has all the power of a sensorless system.

If you intend to race it its the most precise feeling speedo I have ever touched. For bashing either will do just fine. Although I still never like the huge goofy case on the MMM. And having to remove it to change the fan that dies every other run.

I do like the way my MMM bashes as far as throttle control. I haven't had any issues with cogging, so the sensored startup doesn't mean anything to me. There aren't any races around here right now but there may be some soon and I may try it out. Not sure on that right now. I like the design of the MMM and how enclosed it is. It's too bad that it needs the fan to cool it with all that plastic covering the heatsink but my fan has never given me any trouble.

Sounds like you know what you need then.

Sure the MMM is nice, but since I already have one I could always try out the RX8. Is there anything to the RX8 other than sensored start-up? If I'm going to spend the extra $70 for one I'd like to get something extra out of it. I do like that they make lower KV motors for them, I'd like to run 5s in it sooner or later and that would push the 2650 too far.

210amps continuous, :whistle: solder posts, better quality, better everything except the warranty:lol:


something to think about, but dodge(known for tranny failures) has a lifetime warranty on the drivtrain, ford, toyota, honda, etc don't...


BTW the tower super saver club has a 60 off of $300 now...

I've been tossing around the idea of MMM vs RX8 for a while now and here's what I've come up with:

-I plan on running 6s and there isn't a MMM motor that fits this application. So I either need a Neu, which is going to drive up the cost (to well over the cost of an RX8). Or I need a Medusa which isn't an ideal off-road solution due to the open can and non-captured end bells. The RX8 has a great selection of KVs (even if they seem to be a bit underrated by a variable amount of KV depending on who you ask).

-MMM includes the castleLink and RX8 requires that I pay an additional $35 for hotwire which, honestly I feel is a bit of "nickle and dime" for an already $340 system.

-There are tons of MMMs out there but there are also lots of failures. There aren't a lot of RX8s out there but I haven't heard of one failing yet.

-Sensored vs. sensorless: All of my systems have been sensorless and they perform great. I have tried my friends sensored Novak on his 18T and while I do notice the smoothness in the throttle it doesn't add up to anything in our street races. On the other hand, I feel it's better to have it then to not have it.

What is pushing me toward the RX8 is really the motor selection. I don't feel like hunting down and then paying for a Neu with a bolted can. And 2200kv is just way too much for 6s. And until I hear about an RX8 going up in smoke I consider it the more reliable system (just give it a month...).

you don't need the hotwire!!! the tekin esc's are brainless to program, unlike the castle's...


the only thing on the rx8 that you gain with the hotwire is the timing adjustment.

The timing adjustment seems pretty important considering Tekin themselves are changing the default timing value with the new software download since they think it was a bit high from the factory.

TeamTekin on RCTech:
"The default timing on the Rx8 units shipped was 32 and would raise the kv another 50 or so on each motor. In the new software coming shortly the default has been reduced to 10 as it was suppose to be to begin with."

At such a close time to the release of the product you're going to want the firmware revisions that are definitely coming, which means you're going to want the Hotwire.

umm, it was made to run 6s. not too much

55,000 RPM at 25v is a bit much. And it sure doesn't leave you with a lot of gearing options. I don't think anyone on this forum would recommend a 2200kv motor for 6s.

Speed runs...

e-revo, savage flux. 2200kv, designed for 6s usage. 55,000rpm is nothing for a neu. I understand what you're saying. But 6s on a neu 2200kv is no problem

I'm not saying it can't be used. I'm saying it's far from optimal. I mean, Neus are rated for 60,000 RPM and I'd rather not be pushing it to the edge of what it's rated for. I don't want a 2200kv motor on 6s when something closer to 1600kv is a much better match.

Having used both the rx8 and the MMM/Neu now, I can say without question that the rx8 is leagues better. The throttle control is just beyond belief. The MMM is smooth, but the rx8 has ZERO cogging from a standstill. You could go rock crawling with this system. It is the best of both worlds. The MMM low power start up isn't even comparable to the smoothness.

The case on the rx8 is way more durable too. You can screw the case down to a mounting plate and it doesn't need zip ties because the case is held together with four screws in very good plastic, not the cheapo plastic tabs like the MMM.

The motors are absolutely top notch and I think a tad more powerful than the Neus. The solder post prevent the wearing out of the windings that occurs so often on Neus, not to mention direct soldering so you don't have to worry about the bullet plugs coming undone. The system runs cool too.

Tekin has absolutely done their homework on this ESC and Motor and all I can say is that they have raised the bar to a new level.

Not to bash the MMM, as I have owned five of them along with countless variations of Neu motors, but the Tekin takes the best off it all and puts it in one package. The MMM/Neu setup is great, but I think they are going to have to do a few tweaks to put it on the same level as the Tekin (particularly around the case design).

I like the mounting of the RX8, that's for sure. Every other ESC I have (aside from my boats) is zip-tied in. I don't mind zip-ties though, they are a cheap and reliable mounting option that also make it easy to remove.

People talk about solder posts like they're the golden egg, but I really don't see the point. With motors like my MedUsa motors where the windings are coming out the can I can see why it would be good, but the CC Neu motors have 100% of the windings inside the can, the wires are just normal wires and don't need any soldering (plug n' play). I haven't had an issue with the bullet connectors on my MMMs, but if I buy an RX8 and need to remove it or the motor from my Buggy for whatever reason does this mean I'll have to de-solder them each time unless I want to remove them both?

I just got my rx8 yesterday and went out to prairie city today and this system kicks ass ..blah..blah..blah..etc..etc..etc....you all get the point however, the things that i really like the most about it is the ease of track side programming...it has these leds with abbreviations next to them to let you know where you are in the programming mode/the ability to take the fan out without taking the case apart.... and i also like the smoothness or sensorless as well...i used to run a CC/CC NEU 2200kv combo in my rc8t on 4s and now i've swapped it with the rx8 w/1700 truggy motor on 5s and in all honestly...yes its smoother due to sensorless but you won't see the big difference IMOH unless your cruising at less than 2-5mph on the track...but then again, my MMM/CC NEU combo never had an issue with cogging even with stabbing the throttle (in my rc8t on 4s).....sooooo i see the tekin system as just another option in the world of 1/8th scale conversion and (i believe someone already mentioned this) we can call this system successful yet until its been around for at least a month......i personally don't do ridiculous speed runs but I know a bunch of you guys do.....so in my last and final honest opinion, the MMM/NEU=bashers.....rx8=racers.....but we still have to wait until castle comes out with the 1800kv motor :)


oh yeah...and i soldered on bullet connectors b/c i hate solder posts...

I prefer the bullet connectors too. Soldering is cleaner, however for ease of use and practicality, bullet connectors win.

I don't have anything against the RX8, but for my uses I can't see paying the price difference. The MMM does everything I need and CC has excellent service to boot. While the RX8 may be smoother, I have never had a complaint about the smoothness of my MMM. I would like to hear about how smooth the startup is without the sensored motors. Especially on some 6 pole motors.

That sounds good. I have personally never had a problem with the CC Tx programming. It's a TON easier than my 2 HobbyWing ESCs and a bit easier than my MGM but I don't hear anyone complaining about those. Free CC Link (I already have 2, so that's not a big deal) is nice and the programming options are very nice (hopefully we'll see Phoenix ICE features in the MMMs). The RX8 sounds like a nice ESC but, as you said, it sounds like it's more of a racer's thing. The MMM is smooth enough at throttle much lower than I ever use and once you're rolling it's 10x smoother than my MGM.

Can you get a plug for the sensor port on the Tekin motors? In the future I'd like to run 5s and I think the 1700KV motor is just what the doctor ordered for 5s in a Buggy. Right now I only have pairs of 2s packs that I run in series for 4s so the CC 2650 would be perfect for that but in the future I'd like to up the voltage.

curious to see that me too...if the mmm is smoother on the startup without sensor VS the rx8 we can imagne how smooth will be a mmm sensored or the mm pro:whistle:

Those were my thoughts too.

Why is the MMM a better basher system than the RX8?

its cheaper. bashers bash, no need for fancy bling or sensors. i do want the tekin system though, just for the cool factor. tekin was the shit in clodbuster days

I'd like an RX8 setup just to test it out and see how it stacks up to the MMM but the inflated pricetag is hard to justify. Everything Tekin is expensive, I was looking at one for my Micro and they wanted $110 for it...

So cost is the only reason why the MMM is the better basher system? I guess the HW150A is the best basher system then since it's the cheapest right?

Cost is important. But it doesn't matter if you race or bash, reliability is the most important factor. And personally, running on 6s, the MMM simply doesn't have the right motor option unless you upgrade to a genuine Neu which voids the price advantage.

$330 vs $280 isn't a huge deal, but I'm disappointed that Tekin doesn't include the Hotwire at such a high price.

Anyone compare rotor size on those RX8 motors to the CC's? I'm of the opinion that bigger is better for what I want to do, and with the sensor in there, does the RX8 rotor get shorter? Looking for max power here.

felt the same way until I ponied up for the R1 Pro vs. getting another MM.


Tekin is more expensive for a reason: they got some good shit.


my MMM came out of the upper casing during a race session and some of the circuit board thingies got crushed by the static lower case.

Promptly took the R1 Pro out of my onroad set-up and set it up for my truggy (X1-CRT). Just yesterday she got her first full test.

20mins of running hard in about 95deg weather and she didn't even hiccup. was using a 3S NueEnergy 5000mAh, R1 Pro and a Neu 1515/1.5D/F with 11-tooth pinion.

ESC - 145
Batt - 110
Neu - 135



just my 2 cents. :whistle::mdr:

Just my opinion here

But racers are racers. Bashers are bashers. 2 VERY different styles of what they want to do with there toys.

I dont know how to best say this without sounding like a poop head, nor do I know if it will come off the right way. so dont take offense to it anyone..

Coming in this thread, people talk about the RX8 from what they hear, or read. But to actually get the different you absolutely NEED to try it. If you CANT feel a difference in the way the RX8 runs over the MMM then Its very obvious you do not race, or your not very far into racing, which isnt a bad thing, and doesnt mean anything. But I personally run touring car, and after 3 years of it, and getting good, get sponsored, big races ETC (not trying to sound like a D bag, just my point) you can feel the differences of whats what, and look at your lap times and see whats happening with them, Im talking down to the thousandths of a second, EVERY bit counts when racing against the top guys. With bashing cogging, or not having the super smooth response isnt exactly super important, no im not saying cogging because you bash is OK, but with a MMM its not perfect. With racing you want something you can rely on, know when you come to a certain part of the track you give it this much throttle and it will do what you want, the power band is always the same. ETC. The reason the Tekin is more is because its Tekin, there stuff is ALWAYS top of the line, and you cant expect anything less from them, not to say CC isnt nice, but I think Tekin raised the level on the 8th scale BL stuff. IDK how people are complaining about the price of there system. Pletty, LMT, NEU are all super high quality and there price reflects that. Why is this different?

The MMM can be used with racing just fine. And can get you right to the top, but for someone like me thats picky, and wants everything perfect Tekin is the way to go. Im not apart of the Tekin team, im not here to sell crap. Just my personal opinion on this debate..

Blacked out...

I agree. It is all about what you the driver wants. Me...I have never had bad experiences with Castle. I know there is probably better, like pletts, lehners, but I am not racing for money, trophies, or anything but the fun of building a car, putting a good motor and ESC in and having a good time...and beating up on the nitro boys. I am building a GTP II to hit the track with them but I have already been told I can't run for points which is fine...I just like the fun. Run what you run...just run it like you stole it.:intello:

I would really like to drive an RX8 system before really making up my mind. I talked to the guys at my LHS yesterday and they are getting in an RX8 combo but they won't be offering a test Buggy to put it in. This is really unfortunate, I've heard that all you have to do is drive one to want one but that extra $70 would get a very nice BL ESC for my Micro...

I think at this point it's just of matter of what your priorities are.

If the MMM has been fine for you and you want to get a micro esc too, go that route. However, if the MMM has not quite cut it for you and you want something a little better, then go with the RX8.

In the end I highly doubt the RX8 will help you to win more races than the MMM and from what I have read it is more about feel than the actual results.

So far the MMM has been a great ESC for me and I wouldn't mind having another one. I started this thread hoping someone could really sell me an RX8, I'd like to have one to have experience with them both but I haven't seen or heard anything to convince me it's really worth the extra money. As tight as money is right now I may just pick up a Monster ESC with a Tekin motor because I really want to try out their motors. They sound like they're actually a little better than Neus and I love my Neus.

Haha yeah its always a hard decision, having extra $$$ is always a plus! If you join up to tower's super saver club for like 15 bucks I think it is you can get a 60 dollar discount off of 300, and free shipping. Just throwing it out there:na:

I never said it will make you win more races. Its just more consistent, more perfected system. And with that you get a smaller lighter ESC, and super nice motors, rebuildable, and have solder tabs (which I like)

There you go. I know a few people going that route and are liking it. And if you ever wanted you could do a RX8 to pair up with there motor down the road if you wanted to

Better than Neu's? In what aspect? Its hard to beat hand-built quality, except for being sensorless.

I can't comment on the efficiency of the Tekin motors. But the design is definitely better suited for off-road and more rebuildable than the Neu or Medusa. The solder tabs are a nice touch as well, though I feel they are a bit exposed.

The CC/Neu motors are also sealed...

As are Tekno Neus

So are hackers, feigaos, and most of the other cheapo chinese motors that are hacker clones.

I have 2 MMM ESCs still running and have broken 10. I have 3 Tekin ESCs and all are still running. It will be a while before I have the same run time on my Tekins, but as of right now the Tekin is a level above the MMM. The Tekin was trully designed by a CAR controller manufacture.