mrc pro build - again

[bikeboy]

got the:
losi mrc pro comp
mongoose esc with their brushless motor 18.5 combo
hi tec HS 225MG servo
Futaba R614FF receiver
Transmitter is 4PKS
batteries: losi 7.4v 600mah 2s2p lipo
max amp 860mah lipo 11.1v true 100c

the problem is I got all of that built and ran the crawler and this happens:
it ran for about 2 minutes and stop
had to turn it off and on
than ran another 2 minutes and stop
the esc amber/red and yellow blink (nothing mention in the manual)
reciever also flash red and green light

so after about 5 tries
i let the crawler idle for about 10 minutes and the servo started to twitch a little moving the wheels slightly left and right
THAN
spark and smoke from the servo

so now its dead
I'm going to rebuild again but not sure if its the esc that cause this?
or the servo or battery.

Not sure if I should add a Castle BEC to it or not. If that was needed?

So I need your help.
I'm thinking of going with a new setup
esc will be the mamba micro pro esc http://www.castlecreations.com/produ...micro_pro.html

servo: Futaba S9551 http://www.servocity.com/html/s9551_servo.html

motor: either a brushed motor like brood mini anarchy or crawlermafia mini blacknarket

Pinion: Need your help - which model and teeth # (I'm think 12) - do the motor above require a special pinion?

same reciever and transmitter and battery

thanks in advance

[TC09mini]

Its not your ESC. Without pics, its a bit hard to say what. I have a couple questions (and not knowing your level of experience with your RC, I'm not trying to talk down to you):

1) with your servo and linkage all attached, the battery UNplugged, are you able to freely turn your wheels all the way left and right? If everything is freely moving without binds, you can check this off.

2) Do you have your servo limits set on the radio? Due to the fact that you are running a 4PKS, I'm assuming you have had some experience with this system and understand what I mean. In case this is not accurate, there is a setting in on your radio that allows you to adjust the steering. With the RC plugged in, go to this screen on your Radio and turn your steering limits all the way down. Turn the wheel and slowly increase the throw on the radio until it is as far as the servo is able to push. I'd step it back a little bit from the max and you will be set.

Finally, I see that you are running a 225MG. That, most likely, is your problem right there. You really need a full-size servo and luckily the MRC Pro Servo tray has the appropriate holes to allow you to run the larger servo. I wouldn't go with anything smaller than an 645MG. Even this servo is a bit under powered. I'm running big time over kill on my with a 7955TG so I wouldn't recommend anything that high. Finally, I'd get a BEC and wire it right to the servo after programming it to the appropriate voltage with the Castle Creations castle link. Its the best way to get the most performance out of the servo. The appropriate voltage can be found on the servo box.

Hope this helps.

Edit: Looks like the Futaba S9551 will have plenty of push for this application. I'm a big fan of the Novak Mongoose Brushless system. I have two that run very well. It also come with a pinion to run with the stock spur. It is a few bucks cheaper than the CC system.

SECOND EDIT: Running this battery with a 100C discharge is DEFINITELY the reason your fried your servo. max amp 860mah lipo 11.1v true 100c You want to be in the 20-40C range

[bikeboy]

TC09mini
Thank you for the response
Yes its the 225MG servo and the battery that was causing me all of that problem
Waiting for the S9551 o arrive in the mail
But I guess I need to order the Castle BEC - http://www3.towerhobbies.com/cgi-bin...&I=LXSWL3&P=ML
I do not know what you mean by "...programming it to the appropriate voltage with the Castle Creations castle link. "
Do I need to also by the Castle Creation Link too? http://www3.towerhobbies.com/cgi-bin...?&I=LXGVR8&P=M
So using the batteries: losi 7.4v 600mah 2s2p lipo is good to go
But if I use the Castle BEC and the Futaba S9551 servo, I should be able to use the max amp 860mah lipo 11.1v true 100c? Yes?
Thanks again

[mhflies]

Originally Posted by bikeboy

got the:
losi mrc pro comp
mongoose esc with their brushless motor 18.5 combo
hi tec HS 225MG servo
Futaba R614FF receiver
Transmitter is 4PKS
batteries: losi 7.4v 600mah 2s2p lipo
max amp 860mah lipo 11.1v true 100c

the problem is I got all of that built and ran the crawler and this happens:
it ran for about 2 minutes and stop
had to turn it off and on
than ran another 2 minutes and stop
the esc amber/red and yellow blink (nothing mention in the manual)
reciever also flash red and green light

so after about 5 tries
i let the crawler idle for about 10 minutes and the servo started to twitch a little moving the wheels slightly left and right
THAN
spark and smoke from the servo

so now its dead
I'm going to rebuild again but not sure if its the esc that cause this?
or the servo or battery.

Not sure if I should add a Castle BEC to it or not. If that was needed?

So I need your help.
I'm thinking of going with a new setup
esc will be the mamba micro pro esc http://www.castlecreations.com/produ...micro_pro.html

servo: Futaba S9551 http://www.servocity.com/html/s9551_servo.html

motor: either a brushed motor like brood mini anarchy or crawlermafia mini blacknarket

Pinion: Need your help - which model and teeth # (I'm think 12) - do the motor above require a special pinion?

same reciever and transmitter and battery

thanks in advance

im also having the same excat problem!

[mhflies]

Originally Posted by bikeboy

TC09mini
Thank you for the response
Yes its the 225MG servo and the battery that was causing me all of that problem
Waiting for the S9551 o arrive in the mail
But I guess I need to order the Castle BEC - http://www3.towerhobbies.com/cgi-bin...&I=LXSWL3&P=ML
I do not know what you mean by "...programming it to the appropriate voltage with the Castle Creations castle link. "
Do I need to also by the Castle Creation Link too? http://www3.towerhobbies.com/cgi-bin...?&I=LXGVR8&P=M
So using the batteries: losi 7.4v 600mah 2s2p lipo is good to go
But if I use the Castle BEC and the Futaba S9551 servo, I should be able to use the max amp 860mah lipo 11.1v true 100c? Yes?
Thanks again

im using that servo...645MG, so basically, i think its the esc, ill check at the hobby shop though

[mhflies]

Originally Posted by mhflies

im using that servo...645MG, so basically, i think its the esc, ill check at the hobby shop though

i fixed it! i turned off the lipo cutofff and drag brake, and it works great, but i think 9i burned up the esc from the lipo

[bikeboy]

Is it wise to turn off the lipo cut off?
And don't you need the drag brake?
I personally am not sure eithervway

[mhflies]

Originally Posted by bikeboy

Is it wise to turn off the lipo cut off?
And don't you need the drag brake?
I personally am not sure eithervway

lol, yah, i just get used to doing the brake manually, and the lipo cutoff im not worried about, because on all 5 of my planes, i dont have a single lipo cutoff and havent had any problems, as soon as it seems dead, i start recharging it on my lipo charger.....