Mark, I was pretty disappointed with the initial performance and started digging around with the settings. It was a big suprise at the amount of speed you can get. What is really neat is that you can program your turns. :-)
Honestly, I don't know which one would be good or bad. I've got three now, though. :-) On Feb 8, 6:57 pm, Mark_123521 <[email protected]> wrote: > Fred: > > Sounds like your on to something! > I would have never guessed they were programmable. > It's ideal, a two channel, 24 volt, high current, programable, motor > controler! > What brand is good? > > Mark > > On Feb 8, 10:19 am, Fred Thomson <[email protected]> wrote: > > > Hi Mark, > > > The interesting thing about wheelchair controllers is they are > > programmable. Most are setup ultra conservative form the factory or > > dealer. The joystick is programmed with a delay so that accidental > > activation does not launch the chair like a race car, this can be > > reset. The motors are typically set to 50 to 70% of max rpm as well as > > 50 to 60% torque for forward speed and less for reverse. The are also > > set to reach max rpm very gradually. Braking can be setup to either > > coast to a stop or slam to a stop. Turning is also setup > > conservatively. > > > In the test I did, I rest all the values for top speed (both in High > > and Low range), turning, and acceleration to their respective max > > values. I then set the braking to 10%. This worked wonders as the > > motors now have no delay once the joystick is pushed forward and hit > > max rpm in about 2 seconds. Fully proportional speed control. :-) > > > I have thought about controlling the POTS directly but I am unsure > > how to do this (still searching the internet, tho) and I am leery > > about ripping apart the joystick as I don't have a spare in case > > (when?) I screw it up. I thought that for proof-of-concept using a > > mechanical joystick control will do. > > > The real trick to all this is either getting a programming unit with > > the controller or sweet-talking the nearest dealer into it. The dealer > > may refuse due to liability issues as he only has your word it won't > > go into a chair and injure the occupant or someone else. I imagine if > > you show up with it INSTALLED in a tank they *might* accommodate you. > > Otherwise, your choices are limited to finding someone with the > > programming unit for your controller or biting the bullet and buying > > one, which can be as much as the cost of a speed controller. > > Fortunately, one of the speed controllers came with the programming > > unit. > > > I bought two de-commissioned power wheelchairs, for less than the > > fuel to go 40km to pick them up, with the understanding that they > > would not be repaired and sold. Both were fully functional, even the > > batteries are good. > > > Cheers, > > Fred > > -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat
