northerner78
off to a rocking start
Member since October 2018
Posts: 7
|
Post by northerner78 on Oct 30, 2018 8:18:13 GMT -5
First off, hello everyone!! I'm new here and cant wait to learn from others. I'm putting together a list for a cab machine build. I've figured out a few things, but I can't figure out what drives the darn thing. I'd like to use a double shafted motor. Also I'm going to use 2 steel fire extinguishers. Abit of fabrication will be needed but I think the end result will be slick. I need to fit 2 shafts on he left and the right. Does the shaft need to be completely threaded or just the ends? And how do I adapt it to the motor shaft? And finally, how do the wheels secure to the shaft?
|
|
|
Post by Drummond Island Rocks on Oct 30, 2018 8:21:05 GMT -5
Did you browse the previous DIY builds here on the forum. Some nice ones have been posted. I think most of your questions will be answered in those threads. The most common build utilizes a single shaft powered by a motor behind it using pulleys. forum.rocktumblinghobby.com/page/diy-projectsChuck
|
|
northerner78
off to a rocking start
Member since October 2018
Posts: 7
|
Post by northerner78 on Oct 30, 2018 10:32:52 GMT -5
Well I've looked at everyone's builds. But I still don't understand how the shaft is built. The part I don't understand is how the wheels are attached. Is the shaft completely threaded, or just at the ends? I saw how they were built with a single shaft drivin by a pull. I just thought it would be different to use a double shafted motor with adapters to accept the shaft extensions. So again the only thing I need to know is what the shaft looks like and how to build it up with the wheels ect.. also I appologize, this thread should have been made within the technical help thread. Thank you in advance, I'm really trying to understand this stuff.
|
|
|
Post by Drummond Island Rocks on Oct 30, 2018 11:53:17 GMT -5
Look through the pictures of those builds. There are a few showing what you are looking for. Just the end will be tapped or threaded. The wheels are all squeezed between one stationary washer or shaft collar and the other threaded end. In this example there is a shaft collar and then a bolt and washer go on the end. All of the wheels and spacers go between those two points. Both of those pictures are in this thread forum.rocktumblinghobby.com/thread/31278/latest-projectChuck
|
|
|
Post by johnjsgems on Oct 30, 2018 11:53:40 GMT -5
Just the ends need to be threaded. You would need a stop on the other end. Wheels and spacers slide on against the stop with a nut on the outside. If you can find adapters to fit your motor they must be right hand (right side) and left hand thread (left side). If motor shafts are long enough you could thread the motor shaft ends. Motor shafts have to be completely straight. Diamond Pacific has equipment to straighten the shafts on the Baldor motors they use to prevent vibration. You would need 1725 rpm motor as well. You have more torque with direct drive but easier/cheaper generally with a belt drive set up. With belt drive if you use multi groove pulleys you can have multiple speeds as well. Good luck.
|
|
northerner78
off to a rocking start
Member since October 2018
Posts: 7
|
Post by northerner78 on Oct 30, 2018 14:48:57 GMT -5
Great!! It finally clicked. That's exactly the info I needed explained. Now it's off to the drawing board! Thank you very much.
|
|
|
Post by pauls on Oct 30, 2018 23:17:23 GMT -5
It's best to keep the motor out the back and drive the unit with pulleys and belt, that way your motor and electricity is away from and isolated from everything you are going to be working close to.
I used a 25mm (1 inch) shaft threaded with a right hand thread on the right hand side and left hand thread on the left side, the different thread directions mean that when you start up everything tightens up, I know people who have gone with just Right hand thread both ends and just tighten everything well and don't seem to have much trouble.
manofglass just finished a build recently and used high density polypropylene plastic for guards.
|
|
|
Post by manofglass on Oct 31, 2018 0:08:38 GMT -5
|
|