brushless help

[f1n3sse]

I'm converting my 1/18 losi lst to brushless. I have a mamba 8000kv motor and esc and have the following questions.

Do I need something to regulate the voltage to my receiver and servos?
Do I need a low voltage cutoff?
what gearing is safe so I don't burn up my motor. my spur is a 54t

 

[frddyj]

unfortunately idk anything about this scale or set up, but my experience is a good starting point with any product is the mfr's product manual.

it looks like that car comes stock with twin brushed motors: http://www.atomicmods.com/documents/Team_Losi_Mini-LST_Owners_Manual.pdf

which esc and motor (b/l) do you have?

ps. in stock form theyre running 23t pinions with 50/54t spur.

but lets see about the esc before we talk about pinions. also, how much does the car weigh with the lipos & everything ready to go?

 

[f1n3sse]

http://www.castlecreations.com/support/documents/Mamba-25 User Guide.pdf

theres a link to the esc.

its the mamba cm-2080
8000kv motor
just over 2lbs fred

 

[f1n3sse]

so i just read that it has a 1.5A bec built in and a low voltage cutoff. I guess now I just need to figure out what is a safe gearing and go right?

 

[frddyj]

here is some useful info from the castle site

Mamba Micro Pro is priced the same as the old Mamba-25, yet it offers up to twice the performance.

Programming Options
Just like the original Mamba-25, the following Mamba Micro Pro settings can be changed with the transmitter:

Low battery voltage cut-off warning
Brake strength
Lockout reverse mode
Timing adjustment
Start-up mode
Reverse speed
The Mamba Micro Pro ESC is Castle Link™ compatible too – drivers can use their Castle Link and a Windows PC to tune and tweak additonal settings, such as:

Throttle response curve
Brake response curve
Saved profile setup files
Punch control
Separate brake strength
Separate reverse power

 

[frddyj]

ok, guys with 1/18 micro brushless cars running Reedy Systems are in the neighborhood of 13/55

so, based on that, id try the 12/52 and, like lj said in shout, just watch your temps. word to the wise - they're claiming 60+ mph with that gearing and your system on 3s.

 

[f1n3sse]

Since i have a 54t spur gear can i run the 13t pinion and be about the same? I'm gonna be running a 2s so ill see speeds about 50mph nice.

 

[frddyj]

yep thats gonna be fine, just hit it with your temp gun here and there till you get used to running it and the temps.