Doctorbass said:20s on a kv of 12 is ok too but you will not be able to use the full phase amp without any worrie....
madin88 said:Doctorbass said:20s on a kv of 12 is ok too but you will not be able to use the full phase amp without any worrie....
i'm going to set up such combination. in detail: 20s12p 25R, MXUS 3000 3T
as my Max-E already is about 20 month "old" (and i believe no warranty anymore) i yesterday made it ready for unlocked firmware
with ready i mean:
all 8mm² wires
additional ceramic caps
better + additional electrolytic caps with more ripple current and µF
will post some pics later or in new thread. now the glue around the caps must hardening.. wish me luck that it still works![]()
madin88 said:Doctorbass said:20s on a kv of 12 is ok too but you will not be able to use the full phase amp without any worrie....
i'm going to set up such combination. in detail: 20s12p 25R, MXUS 3000 3T
as my Max-E already is about 20 month "old" (and i believe no warranty anymore) i yesterday made it ready for unlocked firmware
with ready i mean:
all 8mm² wires
additional ceramic caps
better + additional electrolytic caps with more ripple current and µF
will post some pics later or in new thread. now the glue around the caps must hardening.. wish me luck that it still works![]()
Doctorbass said:madin88 said:Doctorbass said:20s on a kv of 12 is ok too but you will not be able to use the full phase amp without any worrie....
i'm going to set up such combination. in detail: 20s12p 25R, MXUS 3000 3T
as my Max-E already is about 20 month "old" (and i believe no warranty anymore) i yesterday made it ready for unlocked firmware
with ready i mean:
all 8mm² wires
additional ceramic caps
better + additional electrolytic caps with more ripple current and µF
will post some pics later or in new thread. now the glue around the caps must hardening.. wish me luck that it still works![]()
That's interesting! witch ceramic caps value do you use?
I also tought ading some and getting the 10AWG wires to be upgraded... I also have a great Philips 100V 15000uf Cap here with only 5miliohm ESR... that i could paralel to teh controller input. i think it have 26A ripple current
Doc
GreenRoad said:to place a higher capacity is not always a good solution.
Its better to optimize the wires from the battery to the controller.
or use high quality cells
My measure show me - that the battery current is always taken out of the battery (the current on the display)
I could not measure the phase current - outside the controller - that means it comes from the controller cap bank.
- in relation to kelly - there i also could measure the phase current - in the battery line.
a higher capacity could stress the controller / battery - you should know what you are doing and not trying....![]()
I also could fine nowhere any information.douglashart said:thnx mac, the fan draws .65w so im thinking at 5v that would be 130 ma?
it would help if you explain what disadvantages a higher capacitance could have in this case?GreenRoad said:to place a higher capacity is not always a good solution.
yes thats right, but at least there are always 30cm or more more total wire / interconnection length from battery to controller and this wire has inductance which causes voltage spikes.Its better to optimize the wires from the battery to the controller.
or use high quality cells
if RMS phase current is higher than battery current, than RMS phase voltage must be be lower. this means the controller works like a step down converter and the motor is the coil. the more inductace a motor has the less stress for the FET's.My measure show me - that the battery current is always taken out of the battery (the current on the display)
I could not measure the phase current - outside the controller - that means it comes from the controller cap bank.
On the Kelly KBSX controller i have i never have seen more than the battery current limit i have set in the programming software on the CA.- in relation to kelly - there i also could measure the phase current - in the battery line.
i did what Adaptto has recommendeda higher capacity could stress the controller / battery - you should know what you are doing and not trying....![]()
I used Honeywell SS49E hall sensor. I bought 10 of them from China if you, Cowardly Duck or Longshot need one, I can mail it to you? I used a spoke magnet from an old cyclops bike computer, seems to work fine after some tweaking. I have a hydro-mechanical disc brake set-up, so I put it on the cable at the master cylinder. There is a video on Adaptto's website, basically the magnet faces the hall sensor and moves past the gate between pin 2 & pin 3 (pin 1=+5v, pin 2=Grnd, pin 3= output 0v-3v). You don't need a real strong magnet or you will have too big a gap.Stielz said:Hey guys,
Im keen to wire up a linear hall sensor with magnet on the brake leaver for variable regen. Can anyone tell me whats a good magnet - hall sensor combo?
I've no idea what sort of magnet strength range to expect.. Got some small Neodymium magnets I could use if they aren't too strong (outside the range of a linear hall sensor)
GreenRoad said:I also could fine nowhere any information.douglashart said:thnx mac, the fan draws .65w so im thinking at 5v that would be 130 ma?
I think 1A max should be possible - otherwise it makes no sens to charge an smartphone over this port.
But adaptto should confirm this, because i could find no information at the manual - and i think there are some people who like to put also other things on this port - like Frontlight for example....
madin88 said:one 560µF 15x35,5mm i have installed additional + 7 pcs ceramic caps (four at the input and one at each group of FET's)
it was no hard work to make all fit and soldering is nice on the the copper bus bars. what it needs is plenty of time and and care.
That's beautiful work, well done. What's your intended power/usage to justify the upgrades?
Offroader said:Just wanted opinions on this if it is worth it.
Your thoughts about using these 7mm anti spark connectors from hobby king for the main battery connection. They are 7mm which are bigger in size to the xt150 which are 6mm. So they should have at least the same current rating, but with the nice anti spark resistor inside.
http://www.hobbyking.com/hobbyking/store/__42825__7mm_AS150_Anti_Spark_Self_Insulating_Gold_Bullet_Connector_2_Pairs_.html
I know with the way the max-e is setup for charging, you don't have to unplug your main battery that much so sparking is very rare. Because of this is it worth spending the money at around $4.00 a pair for these, or just spark it for the few times you actually disconnect & reconnect the main battery?
BTW. I know you can build your own but I'd just spend the money for a clean job. I also know the other option is a circuit breaker switch, but I don't think I'm going to install one of those, and I would assume those have to spark also inside?