Frank, January 16 is the Cabin Fever Expo in York. I would think that there are a number of people, like myself, who are attracted to both events and have already made arrangements to attend Cabin Fever.
Ron Frank Pittelli wrote: > Thomas Lum wrote: > >> I was wondering how the scooter speed controllers worked out on the >> T012? Any field test results? >> > > They worked without a problem during the last Gettysburg battles, which > is our only battlefield experience to date. However, I plan on > deploying some more vehicles with scooter motor controllers in 2010 > which is an indication of how well I think they work. > > At $20-$25 for each 350W-500W controller they fit well into my "beefy, > cheap and repairable" approach to system design. For much less the > price of the high-amp commercial products (less than $100), I'll be > using two scooter controllers, 4 auto relays and a circuit board to > provide fully proportional speed control. With the money I save, I'll > have a nice stockpile of spare parts in my box. More importantly, since > the system is modular, if something does fail (on any vehicle) I can > replace any individual component "in the field" in just a couple minutes > with only a screwdriver. > > The only significant drawback of the approach is that the solution > requires more space in the vehicle than a fully integrated commercial > speed controller because the scooter controllers have their own heat > sink cases. On the other hand, they have much more surface area for > cooling. If space is a major concern, the scooter controllers can be > replaced by a pair of SSRs and heat sinks, resulting in a clone of the > Anvilus controller design ... which has been successfully used in dozens > of battles by various vehicles for over 5 years. (In fact, the scooter > motor controller approach is the evolution of the Anvilus design using > modular components. Joe led the way with the development of some > circuits to control the controllers, I've simply been running with the > ball he passed to me, making things more modular.) > > The modular approach also requires more control wires between the > circuit board and the relays/controllers, but the control wires are all > small gauge. > > A complete set of scooter controller components will be on display at > the upcoming Tank Expo 2010 which is tentatively slated for Saturday, > Jan 16 in Annapolis. > > Frank P. > > -- 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
