hello. thanks for the replies, but maybe i should define my question a little bit more.
i know about my electronics, bout controler. yes i plan to use two motors. my only problem is building the drivetrain. i have idea how i want it to be (based on the tanks on this site). but i have more general problems, like atm: how to make drive shaft of my motor longer ? i would like to extend it a little, but have no idea how to efficently do this. duck tape idea doesnt count :) wleding is out of option. On Wed, Dec 2, 2009 at 8:27 PM, Thomas Lum <[email protected]> wrote: > > > > >here's my list of topics i would like to know more about : > > > >-- motors ? i saw everybody here's using big motors with a lot of > >power (120W and more) > > but your models are 1/6, so thats a LOT bigger. how could i like > >calculate what torque would i need, what > > rpm, for my tank. i currently have 2 stepper motors, with 50mN/m (i > >think thats like 40inchlbs, not sure tho) > > but they seem a little bit to small. > > First tip, it's easier for us to build on 1/6th scale because almost all > the hard work has been done for us. Most know what works and what doesn't. > If you blaze out into a different direction, you are going to have to buy > and test a lot of things yourself. Your motors depend of your tank weight. > Make your build modular so you can switch something out easily if it > doesn't work. > > >-- drive shafts, coupling, connecting wheels. > > basicly i have no idea how to do that. i know what i would need to > >do in theory, but how exactly do you connect > > another longer shaft on that small shaft of a dc motor ? (its too > >small to drill thru or anything) ? > > Most of the time the motor has a shaft that you connect either a pulley or > sprocket to. You then use belt or chain to attach that to either a second > belt or pulley, or sometimes directly to the main axle shafts. > > how do > > i connect non-powered wheels (the middle ones) so they can turn on > >the saft, > > Bearings and lock collars > > and how to connect the > > powered wheels so they cant turn on the shaft ? > > Usually you use set screws, keyed shaft or you have to fabricate something > to mate the shaft to the wheel (I think the Cromwell, Tiger or Comet has a > good pic of this) > > all little things > >like this, basicly some building manuals, tutorials, > > books, anythings with pictures would come in handy. > > Read every tank build on the website, that is a bible of building. Also > look at the tanks that are old and still going. Cromwell, Comet, Tiger, > Hetzer, SU-100, Bad Kitty, and a few more I am forgetting. Anyone (almost) > can build a website tank that never goes to a battle (me for instance), but > those tanks I mentioned are punished and still run every battle. They are a > guide to what works well. > > Also anything Frank says is gospel. > > -- > 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 > -- 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
