i'd still be leery of using a servo for steering (unless someone is using an off the shelf r/c vehicle). i did see this: http://www.servocity.com/html/vertical_shaft_worm_drive_gear.html i'll have to see how it might compare to the wiper motor that currently turns the turret as it's replacement chris In a message dated 3/31/2014 12:58:32 A.M. Eastern Daylight Time, [email protected] writes:
This site has hacked and externally geared servo setups. http://www.servocity.com/html/robotzone_servos.html?no_redirect=true Look around the site for many other solutions. Mike B On Mar 30, 2014, at 9:03 PM, [email protected]_ (mailto:[email protected]) wrote: lol, that is how i was designing it - use the bell crank (if that's what they are calling that part in the center) to act as a buffer (of sorts) and to increase the throw/torque just a bit. that and with using ball link ends it'll help smooth things out (specially when in motion) the rest of the way. thanks for that link (i can replace some of my doodles and show a bit better prospective of it all). i'm hoping to look over the pages steve posted tonight to see what info they offer chris In a message dated 3/30/2014 6:23:29 P.M. Eastern Daylight Time, [email protected]_ (mailto:[email protected]) writes: That must be why the concept is used by most cars, RC racing or otherwise; its a conspiracy by Futaba to sell replacement gears... Look up bell crank steering. Its mechanically simple, resists bump steer very well and keeps the wear off your servos. Heres a great picture of the implementation: _http://www.google.ca/imgres?imgurl=http%3A%2F%2Fwww.teammagic.com.tw%2Fpic% 2FProductIntroduction%2FCars%2FE4%2FE4RS09%2Fsingle-bell-crank-steering-syst em.jpg&imgrefurl=http%3A%2F%2Fwww.teammagic.com.tw%2Fwb_product03.asp%3Fcid% 3D18%26itno%3D503003&h=220&w =460&tbnid=BEk1iLdqf1749M%3A&zoom=1&docid=Bm9TGafqzGw_8M&ei=a5g4U5uPEIPlyQGfuoCoDQ&tbm=isch&ved=0CA8QhBwwAjhk&iact=rc&dur=30 1&page=9&start=93&ndsp=12_ (http://www.google.ca/imgres?imgurl=http://www.teammagic.com.tw/pic/ProductIntroduction/Cars/E4/E4RS09/single-bell-crank-stee ring-system.jpg&imgrefurl=http://www.teammagic.com.tw/wb_product03.asp?cid=1 8&itno=503003&h=220&w=460&tbnid=BEk1iLdqf1749M:&zoom=1&docid=Bm9TGafqzGw_8M& ei=a5g4U5uPEIPlyQGfuoCoDQ&tbm=isch&ved=0CA8QhBwwAjhk&iact=rc&dur=301&page=9& start=93&ndsp=12) On Sun, Mar 30, 2014 at 5:32 PM, <[email protected]_ (mailto:[email protected]) > wrote: it is possible not very practical as it'll put some serious strain on the servo and gears chris In a message dated 3/30/2014 5:17:12 P.M. Eastern Daylight Time, [email protected]_ (mailto:[email protected]) writes: Unfortunately its more complicated than that... for example, how long are the steering arms (im assuming your using some variant of Ackerman steering)? Even the weakest servo with a seriously long lever could give some harsh torque... -- -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected]_ (mailto:[email protected]) To unsubscribe, send email to [email protected]_ (mailto:[email protected]) Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups "R/C Tank Combat" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]_ (mailto:[email protected]) . 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