Liebherr LTM 1030-2

[texken]

Well I layied the Keel Sorry I have built to many RC ships. I meant Chassis to day.
Aluminum deck, will have Aluminum Crane.
So will slowly start working on other parts.
Found Telescoping boon, still no wheels, need to be small hub, 4 1/2 in tires.

Will be using Chaseracer's system to raise the boom, just motor on other side.
If it works will share. LOL

Later,
TEXKEN Ken

[texken]

found wheels

texken

[texken]

Think I have my Slewing found.

[JensR]

Is that bolt hollow?
Are you not transmitting any lines between top and bottom?

[texken]

Hi JensR, No wires going threw.

Chassis is powered and the Crane is powered.

Tried all ways, then found this.

TEXKEN

[texken]

Crane up and running.
Need to get the gray paint.

Now can start on the Crane.

[texken]

http://www.youtube.com/watch?v=8GzfuSqA9Jo

[Roadmasters]

Where are the pics???

[texken]

Here are the photos I hope.
texken

[scalecranes]

Looks like you're off to a good start Ken. Where did you end up getting wheels from?

[texken]

Getting wheels from Du-Bro.
Smooth

big wheels with air valve.
Rims has 5 bolt looks.

How is you Crane going?

Texken

[texken]

More done today
still need to trim back deck.
need to get the screw cylinders for jacks.

[texken]

wheels from du-bro. Big Wheels, smooth inflatable with positive seal air valves , plus rim has 5 bolts look.
Hope they work.
hard to find race car tires that are 4".

[scalecranes]

Looking good. Have you thought about what you're going to use for a winch motor yet?

[texken]

No on winch.
Was looking at the winches they use on 4x4 jeeps.
Or just make one up.

Texken

[Jared]

Originally Posted by texken

No on winch.
Was looking at the winches they use on 4x4 jeeps.
Or just make one up.

Texken

I would think about using servos modified for continuous rotation. All you have to do is plug them into your receiver and they will operate just like a hydraulic winch. Modifying them is easy, but I'm not sure if you can modify all of them. Metal gears are good and double ball bearings are a must. I think Smallhaul or Stuff knows where to get servos already set up for continuous rotation.

To chose a servo, just figure out how much weight in ounces you want the winch to pull, then multiply that by the radius of the core of your winch drum and that will give you the inch/ounces of torque required and then chose a servo that has at least double the torque (a little is good, a lot is better) so you don't burn it up. If you want to lift 320 ounces (20 lbs) with a four-part line, then you need a line pull of 80 ounces. So, if your drum core is .75" diameter, the radius is .375"; then 80 X .375 = 30 in/oz required so you need a servo capable of at least 60 in/oz.

And to make sure it has the right speed, take the time/60 degree rotation spec and multiply by six and then divide 60 by that number to get rpms. If a servo has a .18 second for 60 degree rotation, then .18 X 6 = 1.08 seconds per revolution. 60 divided by 1.08 = 55.55 rpms. Since the drum core has a diameter of 3/4 inch, the circumference is 2.35". 55.55 rpms X 2.35" circumference = 130 inches/minute of line speed.

You probably already know how to do the math, but if anyone else wants to know, that's how I do it.

[texken]

Thank you for the info Jared.

finished the head rig

Paint will be nice LOL

TEXKEN

[Southgate]

The "keel" is looking good so far, Ken. Lots of heavy metal coming up, huh? Dan

[Southgate]

Ken, (and others following) I googled the crane numbers to see what we're looking at. Here's a link:

http://www.liebherr.com/AT/en-GB/pro...measure-metric

Dan

[texken]

Still need to clean it up.
ken