i was curious if it is possible to download the older versions, also if the way the weapons worked would be reverted to an older version in the next update?
You might be able to find older versions floating around, but we are trying to keep older versions out of circulation. It makes troubleshooting and communication impossible when people are on two different versions.
As far as reverting stuff goes, the plan right now is to get as realistic a motor model as possible. For the next build I'm hoping to have a fairly complete motor model in place, with correct torques, speeds, currents, and motor heating taken into account. The heating model is pretty basic, but it will allow you to do things like overvolting a motor (common for heavyweights). The tradeoff for this is that the more you push a motor beyond its specifications, the faster it will heat up.
From a player's point of view this means most of the motors are going to see a significant increase in starting torque from their current values. Instead of being capped at a "max torque", the starting torque and current will be significantly higher than the rated value, but will only occur for a fraction of a second. Brushless motors will still be current-limited by their Brushless ESCs. If you want huge starting torques, brushless motors might not be the best choice.