Need explanation- electronics to operate screw drive

[JDH429]

Dabears, thanks for the link. Im pretty familar with that thread as its what i find everytime i search for "gear drive". Its what explained to me how the mechanics work. great resource.

SPfan, Thanks for that lengthy explanation. So it makes sense now that you can run multiple esc to control multiple motors from one rx. I never thought that....So does this mean i need to run separate batteries as well? or can one be used with a Y to power both? I have not purchased a radio for this project yet so i can go either way. I guess a stick would be nice to control speed like you mentioned. The esc that Ric sells comes with actual physical limit switchs? or is this something internal in the esc? not sure if you have used one of these #295 before. Id like to know what others who have built their own screw drive have used..whats the preferred setup.

Oz, im unfamiliar with a dpdt switch. ill have to google that one. Thanks for the diagram. What is the function of the diodes? Thanks, this helps alot.

Im sure this type of work is common for the people who have the experience with RC and especially for the guys building complex machines such as mult axis construction vehicles. Takes a lot of engineering to plan such projects. My hats off to them. Its a new avenue for me so excuse my ignorance. I hope more will chime in to talk about their set up and why they like, or dislike. I did not find too much info on this area. Maybe this thread will help others later on who have the same questions.
Please keep this going, i can use more help as always.

[Espeefan]

Originally Posted by JDH429

SPfan, Thanks for that lengthy explanation. So it makes sense now that you can run multiple esc to control multiple motors from one rx. I never thought that....So does this mean i need to run separate batteries as well? or can one be used with a Y to power both? I have not purchased a radio for this project yet so i can go either way. I guess a stick would be nice to control speed like you mentioned. The esc that Ric sells comes with actual physical limit switchs? or is this something internal in the esc? not sure if you have used one of these #295 before. Id like to know what others who have built their own screw drive have used..whats the preferred setup.

JD, you're welcome. If you so choose, you can run one battery pack on a model, and have multiple ESCs getting their power from it. You simply need to wire the ESCs in parallel, off the single battery pack, with a y-type harness.

The ESC #295, which Ric sells, I haven't actually owned myself. I don't know if it comes with the limit switches or not, but I would assume it probably doesn't. You would have to contact Ric to be sure.

Ric gets a ton of emails every day, so don't feel offended by his short replies. He is a one man operation, plus I think he has one helper, but he has to weed through a lot of emails, some of which come from people who are just tire kickers. Best bet is to call him up. He's a good guy to talk to, on the phone. Always happy to answer questions and explain things. He and I have talked at great lengths about trucks, and projects. He's just like you or I. Very easy to get along with. I'd give him a call. It helps give you a quick answer, rather then waiting for a return email, and a phone call lets him know you are serious, and not just kicking tires.

[JDH429]

Originally Posted by oztruck

The diodes will stop electricity flowing in one direction but allow it to flow in the opposite direction. When it reaches the limiting switch the switch cuts power to the motor, to get it to work in the opposite direction, to go the other way we need to supply power. That's what the diode does. It lets the reverse power ONLY to reach the motor. Hope this helps you.

that makes sense. Are the diodes special for this application? i mean if i needed to order these from somewhere..what do i ask for exactly? thank you