LST2 Conversion

Here is a link to the custom/conversion page on LST Forums. There are threads for both the motor mount and the TD-Racing web sight, neither of which are ready and or running quite yet; but soon.

http://lstforums.com/forums/viewforum.php?f=42

I'm in aggreement with Linc on using motor braking for racing. The MMM brakes are more than adequate @ 40 or 50% and although I'm not an engineer I don't think running mechanical would give you any extra run time. I have also found that positioning the battery forward of the tranny to work perfectly. My truck runs equal or better lap times with the quicker nitro Revo's as long as the driver is'nt choking. Check it out here:

http://www.rc-monster.com/forum/showthread.php?t=14092

[lincpimp]

Yes, forward battery mount is a requirement for better weight distribution and steering. If you take the brake and reverse servo out most packs will fit well between the radio box and tranny. And the esc can then be mounted where the fuel tank normally sits.

cool, then i will use the esc brake.
and the brake will not coast runtime?

[othello]

While braking energy is stored back to the battery.

Take a look at this graph for example


While decelerating Amps do rise as do voltage (comparable to recharging your batteries). As long as you do not apply throttle and your motor is still revving energy is stored back. The amount of energy depends on how hard you brake and seems to be "proportional" to motor RPM when you let off your brakes.

So yes, if you use ESC brakes runtime will increase somewhat.

[lincpimp]

Originally Posted by Burnsi

cool, then i will use the esc brake.
and the brake will not coast runtime?

Just remember to use the esc brake you need to run the forward only kit from losi and a tdr single speed hub. Those 2 parts eliminate the weak factory reverse setup and the one way bearing in the 2 speed setup.

hi othello, nett dich hier zu sehen :)
deine grafik geht nicht, kommt eine hotlinking warnung.



ok, i will take out the mech brake and use the esc brake.
its good, because i have more space for my a123 cells then.

thanks

[othello]

Ok ... i uploaded the graph again. It should be displayed now.



Take a look at those two amp spikes while decelerating. I must have hit the brakes 2 times. You would normaly expect voltage to drop but it is not ... it is rising which indicates that the current flow is reversed and energy is stored back to the batteries.