MM on 5s?

[DLS II]

Mike's already got the 42-60-600 and he's mounting it in the MP-6-but thanks anyway. I guess I'll have to run it 5s A123. Don

[brushlessboy16]

is he machining a mount and all for it?

[DLS II]

Yes, I just didn't have the wherewithall to deal with it. I wanted it done right and I know Mike will do just that. He is mounting it at both ends( like the diff it replaces) so it will have plenty of support. How hot did yours run? I hope I don't have to many heat issues. Don

[brushlessboy16]

after 40 minutes of wot, it was about 185 esc was up there too

[DLS II]

O boy! Looks like I'll have my work cut out for me. Don

[brushlessboy16]

haha your gonna love the power... mine would shred tires with 100% punch control

[GriffinRU]

While, Patrick trying to convience the rest of the world that his esc wasn't design for 5-6S LiPo, I will say that this is only partially true.

If you follow my links, you can find out that you can use ESC with 5S and 6S as long as you disable LiPo cutoff voltage and to make it more reliable you need to switch capacitors and add external component to power input, which clamps voltage to safe level.

I am typing all this because I do not see any chance of working together with Patrick (or CC in this respect) to get benefits of such a nice ESC. He just want to make money, while simple solutions and great ESC already here - he just need to look around...

Damn to change couple resistors and let people to use ESC with 5-6S Lipo freely, I cannot see why he just cannot do that...

[mxracer]

so how do we safely use the mm with no lipo protection ? is there 5s and 6s lipo savers out there?

[brushlessboy16]

you use the custom lipo cutoff feature on the mm, 15.2v for 5s and 18.3 on 6s

[mxracer]

sweet cheers , im going to go try blow something up this week , build a 5s pack and try it out , thanks b/l boi

[brushlessboy16]

no prob :D

[mxracer]

hey so if the MM has voltage cut-off set in the software to accept 15-18v then why have CC only rated the unit for 3s max , surely they can call this a 5s controller as alot of people have been running with success. ( 6s might be pushing the limits but obviously it is achievable )

also if they have made such a awesome MM controller that seems to run reasonably reliable on 4s-5s even sometimes 6s , obviously they have the software to support and only really requires some upgrades in some internal components why is it taking nearly a year to come out with a monster mamba

Ps i worked out the voltage cutoff and gave the 1515 1y / 5s MM a go . but only a few runs up and down the street ( its been raining way too much to do any more testing)
seems to handle ok . hope this gives some longer runtimes and bit more power

[Matthew_Armeni]

You have to look at the average RC car driver and compare him/her to an average helicopter/airplane/boat flyer/driver. Usually, the boat helo crowd are more experienced, older, and not always after a grin inducing high speed run. They know what the limits of their setup really are, match battery and motor combos correctly, and expect to get what they pay for. Us car guys, however, are a little different. There are tons of new, inexperienced drivers, a lot pay hobby shops to fix their gear for them, tune their engines, and are not really interested in why something's not working right, just that it should because they spent a grand on it. Does the average car driver know how to install a BEC, let alone know what one is? Does the average car driver take the time to figure out what motor can work with their controller and what battery they should run? The fact is, the average car driver does not. Castle knows this. They don't want to create extra work for their customer support or repair teams so they put guidelines, such as 3s limits, motor kv limits, etc. To create a car controller for car guys they had to make it over robust because people will run a 1515 1.5D on 6s, even though that's a crazy setup, people do it. Hence the MMM, 200 amp capable and a built in 6s BEC.
If Castle called the MM a 5s capable controller their repair rate would skyrocket. Most people would miss the whole w/o internal BEC asterisk. And while the MM does work on 6s you can't forget that we are talking about racing setups. 40mph max. so a 6s battery but with a 1300kv motor. 5s with 1700kv. 4s with 2000kv.
By the way, running the 1515 1Y on 5s through the MM is a little much. That's a lot of amps and voltage at the same time. You should gear down to reduce heat and you might get some runtime advantage, but not a whole lot. The 2.5D is a better match for 5s.

[Arct1k]

6S is way beyond spec for MM - most of the components are only rated for 25v...

[Matthew_Armeni]

The caps are rated for 25v, the internals are 26v. They use a lot of the same stuff in their boat controllers, but those have 35v caps.