Liebherr LTM 1030-2

[texken]

thank Kerst and doodlebug, will check.

Ken

[texken]

Photos of Screw Jack with pads.
Also Mirrors and Small right door mirror.

[scalecranes]

Looking good Ken. Makes me want to find some time to work on my crane.

[texken]

All done so far.

Just added graded steps and bumper with block hook.

Still have to do some paint touch-up.

TEXKEN

[texken]

http://s1214.photobucket.com/albums/cc500/texken42/

My photos

[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

[JensR]

Okay, that works, too.
Do you use an FM radio?
For 2.4GHz, you will have to make sure that you can bind to two receivers at the same time (don't think this works) or switch models (computer transmitter) between chassis and crane (probably better).

EDIT:
Have to correct myself:
http://www.helireviews.com/fly-sky-f...h-transmitter/
Unless your 2.4 GHz transmitter behaves differently, this means that the transmitter will always send the same code and so different receivers (chassis and crane) will all listen to the same signals. You could still have signals 1-3 in the chassis and 4-7 (or so) in the crane. Hope this makes sense.

As to your design:

I do not see how you fix the gear to the chassis.

How is the bearing held in position?

I do not see how you deal with the axial loads.
The axial bearing should have a large diameter to create a stable platform.

What is the flange bearing in your drawing? The large plate?
I don't understand.

Cheers
Jens

[texken]

Hi Jensr, OK the flange bearing has 2 bolts to bolt to chassis. (see drawing)
from under the chassis, with 3/4 sticking threw the crane deck which turns.
Gear will be screwed around bearing, on the chassis and motor with pinion gear to swing crane.

I think the bearing will work OK, with counter weight.

So what radio should I get. 6CH should work.

TEXKEN

[JensR]

I saw the drawing - I don't understand it.
Are the parts labelled be(a)ring and the one labelled flange be(a)ring one and the same?
If so, this would theoretically work, but you need to be sure that the upper part interacts with the inner ring of the bearing and this will mean that your base for stability has a very small diameter. Not good.
Also, I do not know of any flange bearing with a flange that much larger than the bearing itself.

If however, these two parts are really two parts, I really don't know what we see here.

Which radio? Depends on what you want to control. 6 channels could be not enough if you want to control the outriggers in certain ways.
I'd recommend the Turnigy 9x v2, which is a 7.5 channel radio.
1 drive forward/reverse
2 steer left/right
3 boom angle
4 hook up/down
5 rotate left/right
6 outriggers out/in
7 outriggers down/up
half channel: driving light/working light

[texken]

Here is Bearing
top piece plate removed. Bottom plate bolted to chassis bottom to hold
Only the gray piece will be sticking thought so crane deck can be bolted to bearing.

[JensR]

Ah, cool. Yup, that should be much better than what I thought:
I have never seen one of these units with such a thin flange, only units with massive cast iron housing or tiny bearings where the outer ring has a flange/lip on it.

Pretty neat, will have to remember these

[texken]

More pic when put together.

Ken

[9W Monighan]

Those Flanged bearings will take up too much room. I forget what Tom used on his Marion shovel.
Look these over for some ideas.
http://business.shop.ebay.com/Busine...=p3286.c0.m359

http://business.shop.ebay.com/i.html....c0.m270.l1313

http://cgi.ebay.com/350mm-Lazy-Susan...item5d2a2e67c1

[JensR]

I don't really think anymore that the ones Ken found are too bulky. The lower part will sit flush in the chassis and the upper needs to bridge the thickness of the gear and then the crane needs to be attached to it. If anything, that hollow shaft of the bearing unit might not be long enough...

A very simple and compact thrust bearing is a plastic disc with many 4mm holes drilled in a circle. Put bearing balls into the holes and trap everything between two planar disks of sheet metal. Does not provide radial location of the shaft, but a huge support base axially.

[texken]

Thank you for the input.

Will try and make it work.

Ken

[Hanson50]

Comment on your Radio for your crane. I am dealing with simulary application with my Crane Build, (Potain Crane Build). I am using a 8 Channel radio with 2 Receivers. I use one channel ( a toggle switch) to electronicly switch between one or the other set of funcition. Each receiver will read the signals but if the servos or motor are not powered, nothing happens.
Paul H. Hanson

[ihbuilder]

Originally Posted by 9W Monighan

Those Flanged bearings will take up too much room. I forget what Tom used on his Marion shovel.
Look these over for some ideas.
http://business.shop.ebay.com/Busine...=p3286.c0.m359

http://business.shop.ebay.com/i.html....c0.m270.l1313

http://cgi.ebay.com/350mm-Lazy-Susan...item5d2a2e67c1

Steve I need 1 3" in dia great links

[texken]

Originally Posted by 9W Monighan

Those Flanged bearings will take up too much room. I forget what Tom used on his Marion shovel.
Look these over for some ideas.
http://business.shop.ebay.com/Busine...=p3286.c0.m359

http://business.shop.ebay.com/i.html....c0.m270.l1313

http://cgi.ebay.com/350mm-Lazy-Susan...item5d2a2e67c1

I only have 4-1/4 " on Truck bed

TEXKEN