MM on 5s?

[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.