the rc-dc roadtrip payed off!!!

:p

I remember hearing they intend to double the MM with the MMM, so I'm expecting 6s waranteed and possibly 10s capable, for those who want to push it. I also heard 200 amps being tossed around, so it will be tough to smoke

sign me up for 5 of em!

Yes... that's basicly the idea... it's two MM boards in one unit, double the amp rating/half the IR.

I hope they stick to the HV theme. Shawn used to say he wanted to run 8s... and even higher in the future. From what I heard last summer, 6s sounded like a slam dunk, and I think the goal is higher.

Would 2 boards increase the voltage capacity though?

Thats what im wondering.. Like the 12020 Vs 20120, they have the exact same specs, its just the price difference and one having 2 boards as apposed to 4.

probly depend on how the 4 boards would be connected versus the 2 boards.

Well, technically speaking it should either increase amoount of amps it can handle or the voltage.

So we really want 4 boards 2x voltage and 2x amp.

Pretty much, but they are gonna be more expensive, but hey, id pay for better specs!

I'm not EE but teh voltage is determined by the individual component specs, not the # of fets... the double stacking the MM board IMO is referring to the fets... which would only double the current capacity specs.

ShawnP said that the HV components like used in their HV plane controllers cost quite a bit more than "normal" stuff. And I think the choices.... variety of components availble... is much less when you go HV.

But it would be worth paying an extra $20 or whatever it would be if it can do an honest 8s or so.

I don't mind them stacking the boards IF they provide a heatsink between layers. Seems pointless to only cool the top layer. Sure, the heat will work it's way from the bottom to the top layer, but that's not a good design IMO. The Warriors are like this; they just stack the PCBs and heatsink the top layer. Quark does too, but at least they have a heat spreader...

Personally, I wouldn't mind them using TO-220 style cases (tabbed style) FETs. The case would be bigger, but mounting them on a heatsink would be MUCH easier and those FETs cool better since there is a metal tab connected to the sink rather than the plastic case.

Not only does increasing the number of parallel FETs increase the current capacity, it also decreases the total resistance, which decreases the voltage drop, therefore less heat.

Last summer, CC said things like... double stack the MM... double the specs... and it did sound like that's exactly what they intended to do.

But they may only have used this language to convey the idea... or maybe as a prototype. I have no idea what the production units will be like.

Well, it looks like they designed the HV-110 correctly by putting part of the sink between layers. Makes for a larger case to be sure, but it's done "right". I hope they borrow from that design...

@ bomb-proof; No, if you use two boards it wouldn't increase the voltage it can handle, it will only increase the current.

The voltage is (also) limitid by the specifications of the FETT's that are used. Some other parts need to be changed to work on a higher voltage too.

Rene, I was thinking about that and the built-in BEC should take care of the voltage for the controller brains. So as long as the voltage limit for the regulator is not exceeded (and 35-40v is very common), the only components that you'd have to be careful not to overvolt are the input caps and FETs.

some more info on the MMM...
 

So today I was working at the WRAM show and I decided to stop by the CC booth before the show opened. I asked Joe Ford about the MMM and he said we should expect it by the summer, the motors should be good for 2000-2500 watts of power, and there would possibly be 2 versions; one that is "standard" and good for 6s lipo and one that will be "HV" good for 12s lipo. Sadly they didn't have any MMM esc's that I could buy now:005:...

Off topic:
There should be a update for the MM soon that will let it run all novak, lrp and neu motors. (Joe Ford said that the MM should run the Neu's fine now, but with an occasional hiccup)

Bye:018:

Omfg!!!!!! 12 Cell Lipo In The Speedo!!!!!!!!!!!!!!!! I Want One Now!!!!!!! Give Me One!!!

Holy sh*t, that is awesome. I am so waiting until summer for it. Wow, that is cool. Can't wait. :004: :004:

yeh if thats tru tho, i shure hope tho, i will be all over that baby!!!!!!!!!!:D

That sounds like business! that HV will set a new standard for real HV setups...

Crap, this means that if you want to go extreme, you need a 12S+ monster..

HAHA man i hope it lives to be this :D

if it does then the wait was WELL worth it

Damn...12S...thats insane...I hope this thing comes out before summer...

EDIT: 2000+ watts? Thats more than a 1950 (which is 1800w). So this means that the MMM setup is going to be faster than a 1950?

Then whats the point in spending 350 bucks on a motor when you can just spend about the same amount for the whole system (assuming the MMM is about 300-350 bucks).

A 1950 can throw out 6000 watts plus..

Amen!

They are as powerfull as a 2230 BP.

Boy, I hope "by summer" means it will be out by summer. To me, summer starts in June and therefore puts the MMM out by the end of May.

I just hope that's CC's interpretation too.

I consider summer... mid to late June. So it'll be right before my birthday at the beginning of July!! lol Yaaaaay!! :004: :004:

Basically, if it comes out before July, I'll be happy. lol

[QUOTE=

Off topic:
There should be a update for the MM soon that will let it run all novak, lrp and neu motors. (Joe Ford said that the MM should run the Neu's fine now, but with an occasional hiccup)

Bye:018:[/QUOTE]

So, did he give any further info on the Neu compatability? Did he say it's limited to any motors at all? Specifically the 1515? Thanks.

That is pretty cool. I guess that means I may have a replacement esc if my
fails. Sweet. Just what the monster ordered. :D

He said they should run fine. I ran my 1515 with the MM tonight for like 5 min. and there was no cogging at low low speeds. Also, I talked with Joe again today and he said the MMM esc is basically done, the motor is what they are working on; should be 85%+ efficiency(they are modeling it after the NEU's)

Nice - thanks for the info.

I just wish they would hurry:002:

I'm working on my conversion right now and really want to get the motor and speed control sometime soon. It's just tough having the thing just sitting there, you know? Well, hopefully they'll get it dialed sooner rather than later.

Do you know if they have already started testing the ESC? I am just so excited to see this thing, especially with the capabilities on 6s, 12s, ect. That is just awesome. :004:

There hasn't been any testing outside of CC. Beta testing will be done before the system (or ESC) goes out to the public. You'll know when it's that time ;).

Cool, i got a 2250 with a hv mmm in mind for it. Guess its time to get the 10s TP 22c packs at the local plane shop

Ok...thats a bit more comforting.

Does anyone think a 1950/6 Hi-Amp on 4S will do 50mph? My G2R only weighs ~9 pounds...

Crazy - what are you planning to put the 2250 in?

Not sure yet, I got a savage with a 22 motor mount, an MGT that i want to convert to electric and i'm also thinking about a custom motor mount for my slipperential equiped Gmaxx, so thinking about it till the mmm comes out

Will the MMM motors be equipped with segmented rotors and built in heatsinks? If they are based on the Neu motors?

no one knows....

There are no MMM controllers right now... betas are expected within a couple months last I heard. So don't expect anything too soon.

IF everything goes perfect... I would say June is a possibility. That's just my guess.

I'm expecting a beta unit but we'll see... I have no guarantees with Shawn no longer there.

GD, have you received any emails within the past month or two from Lee? He's the beta guy as far as I know (been getting emails from him regarding beta testing). You may want to contact him about getting on "the list" since you should be on it.