I think that having a powerful steering servo is only part of the solution. You also need a mechanism to handle the jolts and bumps without transmitting the shock to the servo (or gearmotor). I finally found something that worked pretty well for RocketMan. Check out this out RC Tank Combat post.
http://www.rctankcombat.com/archive/2007-08/msg00415.html - Doug From: rctankcombat@googlegroups.com [mailto:rctankcom...@googlegroups.com] On Behalf Of Chrysanthos Kanellopoulos Sent: Friday, February 27, 2009 11:54 PM To: rctankcombat@googlegroups.com Subject: [TANKS] Re: High Power Servo Hack Lots of voltage but they are inexpensive. I don't know if they spin indefinitely or if they are "programmed" to rotate only 60 or 90 degrees left and right to suit a steer system, or what does the trick. Chrys Paul, I have not personally tried this yet but I see no reason why it will not work well. Some possible gearmotors for steering our armoured cars could be: http://surpluscenter.com/item.asp?UID=2009022709083981 <http://surpluscenter.com/item.asp?UID=2009022709083981&item=5-1634&catname= electric> &item=5-1634&catname=electric http://surpluscenter.com/item.asp?UID=2009022709083981 <http://surpluscenter.com/item.asp?UID=2009022709083981&item=5-1664&catname= electric> &item=5-1664&catname=electric http://surpluscenter.com/item.asp?UID=2009022709083981 <http://surpluscenter.com/item.asp?UID=2009022709083981&item=5-1257&catname= electric> &item=5-1257&catname=electric http://surpluscenter.com/item.asp?UID=2009022709083981 <http://surpluscenter.com/item.asp?UID=2009022709083981&item=5-1685&catname= electric> &item=5-1685&catname=electric http://surpluscenter.com/item.asp?UID=2009022709083981 <http://surpluscenter.com/item.asp?UID=2009022709083981&item=5-1693&catname= electric> &item=5-1693&catname=electric PF, The Tecel board seams to be no longer available that's why I listed the Robot-Power alternative. I've spoken with the owner of Robot Power and he stated that his Simple H-Bridge is being used to make high power servos by others. Steve Tyng On Feb 27, 11:55 am, pixelFiend <pxfi...@gmail.com> wrote: > I've been wanting to do this as well for a project. Every time I look into > it however, I keep running up against the Tecel website, which turns up an > "access forbidden" message on the D200. I make a note to call or look into > it further, then other things come up. > I have several motors I could use for this- does anyone have any info on > Tecel? Are they still a going concern, or have you bought from them? > > PF > > > > On Fri, Feb 27, 2009 at 11:38 AM, Paul Hilton <phil...@defnet.com> wrote: > > > Steve, you must have been reading my mind. I was just thinking about a > > solution for the BT-7's steering. Have you tried this? Seems like a good > > choice for large wheeled vehicles! > > > Paul H. > > ----- Original Message ----- > > From: "Steve Tyng" <steve...@gmail.com> > > To: "R/C Tank Combat" <rctankcombat@googlegroups.com> > > Sent: Friday, February 27, 2009 10:03 AM > > Subject: [TANKS] High Power Servo Hack > > > > Here's an interesting article on modifying a standard servo to drive > > > an external gearmotor. Basically the geartrain is removed from the > > > servo which is then used as a position sensor for the gearmotor. The > > > servo electronics are used to drive an offboard h-bridge. > > > >http://www.fieroaddiction.com/servo.html > > > > An h-bridge that would work well with this setup (the Tecel D200 > > > referenced doesn't appear to be available anymore). > > > >http://www.robotpower.com/products/simple-h_info.html > > > > Steve Tyng > > -- > PF > > astromechbuilder.com > astromechfactory.com -- PF astromechbuilder.com astromechfactory.com <BR --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
