mamba xlx questions

[phildogg]

Crickets!!!

[Pdelcast]

Originally Posted by phildogg

Crickets!!!

More info?

There are several things that can cause throttle-back.

Setup and ESC settings would be a good place to start.

Most often it's Lipo related -- the ESC sees Lipo voltage drop to an unsafe level, and throttles back. This is to prevent the Lipos from burning up.

[phildogg]

Well the xl2 you can set up current limit to 300a and on xlx its lower right? they just don't run like the xl2 do. setup is all the same. well except for the ability to set amp current higher. The xlx i hear has some new software that prevents it from making the same power as xl2. Is this true?

[phildogg]

Originally Posted by Pdelcast

More info?

There are several things that can cause throttle-back.

Setup and ESC settings would be a good place to start.

Most often it's Lipo related -- the ESC sees Lipo voltage drop to an unsafe level, and throttles back. This is to prevent the Lipos from burning up.

This is also with no lipo cutoff. so not it. it only happens with the new xlx esc.

[Dr_T]

Originally Posted by Pdelcast

Most often it's Lipo related -- the ESC sees Lipo voltage drop to an unsafe level, and throttles back. This is to prevent the Lipos from burning up.

Patrick, is that a new feature / has it been changed with the X series compared to XL2 and the previous Mamba Monsters? Can you please explain a bit more on what parameters (Voltage, Current, also ripple?) the ESCs use to determine whether to throttle back, and what the thresholds/limits (V, A, etc?) are at which the safety feature(s) is/are triggered?

Here's a log of 0verkill's 1/8 Truggy geared for 153 mph no-load with a CC1515 and MMX. Log indicates some bad-ass ripple and Voltage dipping to 3.28V Cell, and based on low RPM and relatively (considering the gearing) low peak Current, it seems ESC is holding back, no?

Originally Posted by phildogg

Ok I have read that the x series has added safety protection and throttles back the high amp draw that was seen with the xl2. Is this correct? A friend of mine has one in a 1/8 scale car and it runs like it is at half throttle. surely they aren't regulated back that much? I hear its because of the warranty issues from people using the xl2 esc incorrectly geared and trying speed runs when they had no clue what they were doing. please enlighten me on if this is true.

Phill, do you have some of your friend's XLX logs to show how it is holding back?

[phildogg]

I believe so. Funny thing is the x series are very limited esc. Mmx too. We can't get a honest answer either.

[0verkill]

Yes, the ripple voltage was bad on that over geared run. Phil, what's your ripple voltage on your passes?