speed controler

[woody]

i have been reading through a few posts and some people seem to have their toylanders running at around 9mph can the standard speed controler be adjusted

mine is running 24 v  (2 x 12v motors off richard)
and a speed controller

[quadra]

Unfortunately the speed controller doesn't determine top speed, it can only regulate it. Top speed is determined by the gearing and wheel size. I believe that the standard build cars are geared to do 4 mph flat out, if you were to change some of the gears then that might improve top speed but just make sure that the motors have enough torque to drive the car up hills now that the gearing is taller.

IMO getting the gearing right is one of the most important parts of the build.

[multisync]

Hi All
Yes, Quadra, I quite agree, gearing is all important.
If you have an electric motor, that is able to carry a certain load at a certain speed, any change to gearing will either improve torque or speed. You can't improve both.
Just like a car, it will do a certain job at a certain speed, so to increase the torque ( to carry bigger loads or go up steeper hills or tow heavy trailers) lower gearing is needed. The car will pull more load, but the speed is limited.
But unlike a car, the  electric powered Toylander doesn't have, or need, the option of various gear ratios.
The standard setup uses tried and tested ratios.
The bottom line is, that you must use the motor within it's design capabilities.
Changing the gearing to give more speed. will result in a model that won't perform well under load. It may also make the motor run less efficient, and it may overheat with some undesirable consequences.
If you want to move the same load but at a higher speed, the answer is simple.........fit a bigger motor. That means higher current draw, (or higher voltage), and consequently a reduced duration from the same battery capacity.
If it were any simpler to achieve, we would all be driving electric vehicle not combustion engines!
Take Care
Best Wishes
Walter