If the shaft is too small for drilling, my next suggestion would have been for drilling and tapping just the sleeve, but it looks like you've already been hit with a number of far more detailed responses, so I'll just once again say welcome, and good luck!
James Date: Wed, 2 Dec 2009 21:44:26 +0100 Subject: Re: [TANKS] some information needed .... From: peter.pisl...@gmail.com To: rctankcombat@googlegroups.com 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 <me1y...@hotmail.com> 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: peter.pisl...@gmail.com To: rctankcombat@googlegroups.com 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 <t...@mac.com> 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 rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com 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 rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat Windows 7: Unclutter your desktop. Learn more. -- 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 -- 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 _________________________________________________________________ Chat with Messenger straight from your Hotmail inbox. http://www.microsoft.com/windows/windowslive/hotmail_bl1/hotmail_bl1.aspx?ocid=PID23879::T:WLMTAGL:ON:WL:en-ww:WM_IMHM_4:092009 -- 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
