steve and james, thanks a lot. the tools i have ... a lot to work with wood, but not much to work with metal. sure i have a drill, but the shaft i plan to use is to thin for drilling i think. do you think just using a sleeve and some glue would work ? thats basicly how the gear wheel is usualy attached to the small dc motors right ?
On Wed, Dec 2, 2009 at 9:21 PM, whitney james <[email protected]> wrote: > What tools do you have? If you can find a sleeve that fits around the > shaft tight enough, you can slip it half way on, drill a hole through, and > secure it with a simple bolt. Then, your shaft extension slips into the > other end, and is secured the same way. > If you want to make sure there is no play, goop the inside with epoxy > before you put on the sleeve. > > ------------------------------ > Date: Wed, 2 Dec 2009 21:06:56 +0100 > Subject: Re: [TANKS] some information needed .... > From: [email protected] > To: [email protected] > > 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 > ------------------------------ > Windows 7: Unclutter your desktop. Learn > more.<http://www.microsoft.com/windows/windows-7/videos-tours.aspx?h=7sec&slideid=1&media=aero-shake-7second&listid=1&stop=1&ocid=PID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_7secdemo:122009> > > -- > 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
