Need A Response From Patrick @ Cc

[MetalMan]

It'd cost a lot more than $30 at this point because of all the tooling/molds/time/money CC has invested into the current MMM. And I'm sure CC had certain goals such as price, power, voltage, etc. for the MMM which they wanted to stick to.

Originally Posted by MetalMan

It'd cost a lot more than $30 at this point because of all the tooling/molds/time/money CC has invested into the current MMM. And I'm sure CC had certain goals such as price, power, voltage, etc. for the MMM which they wanted to stick to.

not so sure. becs and fets dont necessarily have to be of different size - they can be of better quality, pick of the yield etc. v2 has a beefed up bec vs v1 without any compromise to packaging.

at this point his design is fine or it wouldnt last multiple runs before failure. there are certain components - fets and becs that arent living up to the ratings that castle thinks they are buying- read made in china.

this is classic - vendor supplies samples to win the bid. they are tested and no issues. then sends 2500 of them that have 10% yield failure.

[MetalMan]

Originally Posted by alangsam

not so sure. becs and fets dont necessarily have to be of different size - they can be of better quality, pick of the yield etc. v2 has a beefed up bec vs v1 without any compromise to packaging.

at this point his design is fine or it wouldnt last multiple runs before failure. there are certain components - fets and becs that arent living up to the ratings that castle thinks they are buying- read made in china.

this is classic - vendor supplies samples to win the bid. they are tested and no issues. then sends 2500 of them that have 10% yield failure.

If I recall correctly, CC is already using some of the best FETs out there. FETs aren't the whole story though, as you know.
As for the BEC chip, I have no idea what they could do better (other than improve it).

[Pdelcast]

Originally Posted by alangsam

not so sure. becs and fets dont necessarily have to be of different size - they can be of better quality, pick of the yield etc. v2 has a beefed up bec vs v1 without any compromise to packaging.

at this point his design is fine or it wouldnt last multiple runs before failure. there are certain components - fets and becs that arent living up to the ratings that castle thinks they are buying- read made in china.

this is classic - vendor supplies samples to win the bid. they are tested and no issues. then sends 2500 of them that have 10% yield failure.

I don't buy ANY materials out of China, and most of my parts are direct from the manufacturer.

So no, this isn't the case.

We are investigating right now -- but the failure rates are not all that high (regardless of the noise on the boards...)

We have also seen that most people don't have a problem, and then others toast 3, 4 or 5 controllers in a row. We are trying to figure out WHY some people toast many controllers, and others are just fine. It might be broken servos (we have seen broken digital servos damage switching BECs) or it could be bad motors, we just aren't sure yet.

Patrick

[BrianG]

Originally Posted by Pdelcast

...We are investigating right now -- but the failure rates are not all that high (regardless of the noise on the boards...)...

Makes sense. I'm sure there are people NOT on boards who run fine but don't bother posting the results. Not everyone is as fanatical as we are.

[JaySki]

Originally Posted by Pdelcast

I don't buy ANY materials out of China, and most of my parts are direct from the manufacturer.

So no, this isn't the case.

We are investigating right now -- but the failure rates are not all that high (regardless of the noise on the boards...)

We have also seen that most people don't have a problem, and then others toast 3, 4 or 5 controllers in a row. We are trying to figure out WHY some people toast many controllers, and others are just fine. It might be broken servos (we have seen broken digital servos damage switching BECs) or it could be bad motors, we just aren't sure yet.

Patrick

I am running a brand new NEU1515 1.5D, Stock Servos. My last MMM ran FLAWLESSLY with a UBEC, until I changed setting in Castle Link. Up until now, I left it all at defualts.. even the LVC.
Yesterday, I changed the LVC to 12.8, Punch Control to 70% and modified the throttle curve a bit. 10 minutes later it jerked a bit at slower speeds and died. Motor never hit 100 and the MMM was still relatively cool. Didn't even smell like anything burnt. No lights nothing. Disconnected batts and threw them on the charger, tried another set of Batts and still nothing. Only running 4S.
Prior to the changes in Castle link.. I ran the snot out of it the weekend prior. Had a few runs that hit 55MPH with no real heat issues and no problems.

[jayjay283]

Did you try putting it back to auto lvc and testing it ? Heard they were having some issues with manual lvc settings

[phatmonk]

Originally Posted by jayjay283

Did you try putting it back to auto lvc and testing it ? Heard they were having some issues with manual lvc settings

So is there a issue with the LVC manual setting?I havent taken any chances changing mine to manual or custom.I have 2 MMM V2s and is 3s and the other is 4s.Both work flawlessly

[TruckBasher]

Originally Posted by JaySki

I am running a brand new NEU1515 1.5D, Stock Servos. My last MMM ran FLAWLESSLY with a UBEC, until I changed setting in Castle Link. Up until now, I left it all at defualts.. even the LVC.
Yesterday, I changed the LVC to 12.8, Punch Control to 70% and modified the throttle curve a bit. 10 minutes later it jerked a bit at slower speeds and died. Motor never hit 100 and the MMM was still relatively cool. Didn't even smell like anything burnt. No lights nothing. Disconnected batts and threw them on the charger, tried another set of Batts and still nothing. Only running 4S.
Prior to the changes in Castle link.. I ran the snot out of it the weekend prior. Had a few runs that hit 55MPH with no real heat issues and no problems.

Now that you mentioned it the first few packs on my modded V2 run fine until I change the LVC to a custom 1 and change the brake amount...after that I was able to run it for 15-20mins then it just stop working after serious cogging in forward and reverse....

Not sure if it make sense...not sure how the software affected the HW ...

[JaySki]

Originally Posted by TruckBasher

Now that you mentioned it the first few packs on my modded V2 run fine until I change the LVC to a custom 1 and change the brake amount...after that I was able to run it for 15-20mins then it just stop working after serious cogging in forward and reverse....

Not sure if it make sense...not sure how the software affected the HW ...

That is seeming to be the trend....

[jhautz]

Weird thing I was just thinking about when I read this.


I recently had 2 MMMs die on me. A V1 and a V2. I had one of the first 50 or so V2 MMMs that were shipped with the 1.18 software on it. Apparenty it had some sort of LVC program error that didnt cut off the LVC unless you were at less than 1/3 throttle. I read about it on the CC website. They said there were only 50 or so that got out with that version software and the rest were shipped with 1.19. When I read this I checked and found 1.18 on mine so I updated it to 1.19 and the next time I ran it, it died. It only had one race day on it but it had been working perfectly up to that point, and I never got even close to the LVC so I didnt see any 1.18 problem. Didnt really think about it untill jsut now, but I wonder if the software had anything to do with it?

I also had a V1 that was running 1.17 and had close to 20 hours of run time on it and was still working well. I updated it to 1.19 at the same time and it died the next time I ran it also.

I have one V1 left. It still has 1.17 software on it. I am not going to touch it. I has a good 10-12 hours of runtime on it and its still going. I dont know if the software had anything to do with it, but at this point I'm not going to introduce it as a variable. Its working as is. I'm leaving it and I guess I'll se what happens.