Powered all-thread and nut lift

[steamer]

Like playing pool, it's all about the angles. When the slider starts to push it's basicaly trying to push the front end out of the box. Because of the rear hinge, the box has no were to go but up and it does real fast. As the slider goes through the middle and the screw rpm remains the same it looks slower because of the lift angle. Should design a compensator circuit gives max torque at the start, and as the amps start to drop off mid lift, it brings the voltage up to increase the screw rpm making it look more consistent . I'm sure someone on here should be able come up with a circuit. If not, I'll put some thought into it when I get into my dump build.
Rob

[Mustang]

I used the Carson sissor style unit in my King Hauler dump truck. It is very smooth and powerful plus it's speed remains constant. It's designed for their trailer so it takes a bit of modification to fit between Tamiya frame rails but I found it well worth the work.

[Thorsteenster]

Originally Posted by steamer

Like playing pool, it's all about the angles. When the slider starts to push it's basicaly trying to push the front end out of the box. Because of the rear hinge, the box has no were to go but up and it does real fast. As the slider goes through the middle and the screw rpm remains the same it looks slower because of the lift angle. Should design a compensator circuit gives max torque at the start, and as the amps start to drop off mid lift, it brings the voltage up to increase the screw rpm making it look more consistent . I'm sure someone on here should be able come up with a circuit. If not, I'll put some thought into it when I get into my dump build.
Rob

Now that would be sweet, if that's something you can do, just being you thought of it I'm guessing you can, than by all means!

Originally Posted by Mustang

I used the Carson sissor style unit in my King Hauler dump truck. It is very smooth and powerful plus it's speed remains constant. It's designed for their trailer so it takes a bit of modification to fit between Tamiya frame rails but I found it well worth the work.

That's what I'm planning on trying on mine, a scissor lift. Seem you get the best lift for the shortest stroke. I couldn't find it on Carson's site, have a link?

[Mustang]

I have a devil of a time with Carson's site too. I got mine from PMD. It's in their Tamiya accessories section.

[Thorsteenster]

Originally Posted by Mustang

I have a devil of a time with Carson's site too. I got mine from PMD. It's in their Tamiya accessories section.

Yup, found it, and wow, $188. Yeah, I'll be working on my own design lol. They are nice though, and certainly worth the money I'm sure.

[FabOne]

Originally Posted by Mustang

I used the Carson sissor style unit in my King Hauler dump truck. It is very smooth and powerful plus it's speed remains constant. It's designed for their trailer so it takes a bit of modification to fit between Tamiya frame rails but I found it well worth the work.

Mustang -

Do you have any pics or description of the mods you did to your Tamiya frame?

It would be great to see how you mounted your Carson lift.

Thanks in advance -
Terry

[Finster]

I'm not sure if this is entirely possible or not, but instead of an electronic solution what about a mechanical one? What I mean is perhaps a variable pitch screw of some sort. Might be an easier solution, or might not

Just thinking out loud. Anyone have thoughts?

[fhhhstix]

Originally Posted by Finster

I'm not sure if this is entirely possible or not, but instead of an electronic solution what about a mechanical one? What I mean is perhaps a variable pitch screw of some sort. Might be an easier solution, or might not

Just thinking out loud. Anyone have thoughts?

Izzy and I have thought about that idea but the cost of having a progresive pitch tread cut would add a lot of expense to a cheap alternative to hyd cylinders.

[SonoranWraith]

Originally Posted by fhhhstix

Izzy and I have thought about that idea but the cost of having a progresive pitch tread cut would add a lot of expense to a cheap alternative to hyd cylinders.

For a dump yes. However when you need space, the spindle would be better. For the same price in a tight model, like a say a tractor, I'd rather have the spindle even if it costs more.

[fhhhstix]

Originally Posted by SonoranWraith

For a dump yes. However when you need space, the spindle would be better. For the same price in a tight model, like a say a tractor, I'd rather have the spindle even if it costs more.

Are you talking about a tractor truck or a farm tractor.
The screwdrives we are talking about are for dump trailers or trucks or in the case of my TK70 I used it to lift the tail and deck. I am even going to use one on my tow truck and hide it and make fake cylinders to look like they are moveing it up and down.

Travis