What is this BS Castle is feeding this customer?

[Joe Ford]

Anyone who has issues with a MMM...send it in with a copy of the service request form. We are making these top priority right now. We'll give you the fastest service possible as this is a new product, and you've all waited long enough to have fun.

http://www.castlecreations.com/suppo...quest_Form.pdf

[Sower]

Dang, I already sent mine back w/o any form. Just a note to you or Patrick. I did send him a PM though - does that count for anything?

Originally Posted by Joe Ford

Anyone who has issues with a MMM...send it in with a copy of the service request form. We are making these top priority right now. We'll give you the fastest service possible as this is a new product, and you've all waited long enough to have fun.

http://www.castlecreations.com/suppo...quest_Form.pdf

hi joe
in my country, thailand, there are 3 MMMs. All 3 owners are my friends. I would like to know,.can we send all 3 failure MMMs in one mail box to CC if all 3 are fail?

[Joe Ford]

Originally Posted by finfin

hi joe
in my country, thailand, there are 3 MMMs. All 3 owners are my friends. I would like to know,.can we send all 3 failure MMMs in one mail box to CC if all 3 are fail?

You can send them all in one package. We will ship back to whoever sends the package in.

[phatmonk]

Darn my second MMM died.I switched my 1515/1.5 4s for my 1515/1d on 3s 6000.It just stopped like the first one.The 1515/1D max amps is 200A.The system wasnt even warm.It ran flawless yesterday with the Tekno Neu 1515/1.5d.I should not have swapped the motors




Losi 8T MMM? Tekno Neu 1515/1.5/f 4s 6000/Neu 1515/1d/s 3s 6000
Crt.5 Quark 80B Neu 1512/1d/s 3S 6000

[xtremelimits285]

Originally Posted by phatmonk

Darn my second MMM died.I switched my 1515/1.5 4s for my 1515/1d on 3s 6000.It just stopped like the first one.The 1515/1D max amps is 200A.The system wasnt even warm.It ran flawless yesterday with the Tekno Neu 1515/1.5d.I should not have swapped the motors

Losi 8T MMM? Tekno Neu 1515/1.5/f 4s 6000/Neu 1515/1d/s 3s 6000
Crt.5 Quark 80B Neu 1512/1d/s 3S 6000

Probley was going to die soon anyway, by swaping motor/batteries, just showed the esc was a bad one..

that does suck though

[Joe Ford]

Doesn't matter if you sent the form or not. We'll still get you fixed up asap. As long as you put your return addy in there we're good to go.

[Sower]

I figured as much!

[MTBikerTim]

I sent it with the form. Make sure you repair mine before sower's since he forgot the form .

[Sower]

Originally Posted by MTBikerTim

I sent it with the form. Make sure you repair mine before sower's since he forgot the form .

Nice - that's hilarious

It will be interesting to see what the cause of the failures has been. After opening mine up and seeing how the wire separated I think that might be a main cause. Like I really know

[Dagger Thrasher]

I'd just like to say that you Castle guys are doing an awesome job in dealing with these issues. I know it must be a bit of a nightmare, having spent all this time developing a great controller and being let down by defective components! You're being extremely involved (especially being active on the RCM forums) with this situation, and doing your best to rectify it with minimum hassle, so I take my hat off (if I had one on lol) to Pat and Joe. That's what customer service is all about.

I've still got my MMM waiting for a vehicle to go in, so I hope it's a good 'un, but if it isn't then I know I'll get taken care of. LOL that sounded cheesy, but it's true! Nice one guys. :)

[RBMike]

Originally Posted by Dagger Thrasher

I'd just like to say that you Castle guys are doing an awesome job in dealing with these issues. I know it must be a bit of a nightmare, having spent all this time developing a great controller and being let down by defective components! You're being extremely involved (especially being active on the RCM forums) with this situation, and doing your best to rectify it with minimum hassle, so I take my hat off (if I had one on lol) to Pat and Joe. That's what customer service is all about.

For sure +1. Even though mine died, I'm not the least bit upset about it because I'm sure they will take care of it. Just will miss getting to run it that's all. It's too fun this brushless buggy thing.

[TexasSP]

Well, fedex says mine just arrived at CC so whatever happens they better kick both of yours out of the way to fix mine!



Just kidding, as long as I get it back early next week I will be happy. I want to try the new Medusa out and it looks all lonely just sitting on the floor waiting for a home.

[Sower]

Well, I sent mine yesterday morning USPS Priority so I don't think it will get there until tomorrow. So I think you're safe.

[BrianG]

Not responding to anyone's post in particular, I was thinking about the seemingly continual controversy about the death of batteries using the MMM. These are the facts as I know them:

#1: Batteries that cannot sustain high currents without substantial voltage drop exhibit higher levels of current ripple. This can mean lesser-quality cells that are rated "optimistically" or cells that simply don't have the C and mAh rating combination. And before anyone chimes in, I'm not talking about MA cells in paticular, but any cell.

#2: The MMM (capable of 200A) probably has less total rdson value than the MM (capable of 100A). OK, this is not a fact, but an assumption.

#3: The MMM seems to be more sensitive to batteries than the MM for the same setup. Again, not a fact, but an observation.

#4: The issue with the UBEC dying is now attributed to a batch of less-than-stellar components. Ok, this isn't really related to the point, but I thought I'd throw that one in just to have a comprehensive list.

The only conclusion I can come up with for #3 is that the slightly higher rdson value in the MM setup helps to slightly reduce the battery's available current to the motor. Not much, but enough. The MMM is a "larger pipe", so the motor is free to pull as much current as it needs - at least slightly more so than the MM. This higher level of current causes more ripple current and is not good for batteries.

Does this sounds plausible? Does anyone have eagletree graphs of the same setup comparing the current levels using the MM and then the MMM? Would a few more caps to the battery input leads help protect cells like in #1?