Liebherr LTM 1030-2

[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

[JensR]

Do you mean 100rpm by any chance?
The hubs look good!
Brass tube with brass collar? Collar drilled and tapped?

Attaching motors:
press into plastic tube
glue into other tube
screw into mounting holed on front surface of motor, angled metal plate
use hose clamps to secure motor on metal/plastic profile
...
?

[texken]

JensR, Set Screw.

Thank you for the input, on mounting.

Two Motors for $14.98 shipped, they are 1000 RPM's.

They test fun good on 4-AA.

Will see how it goes. LOL

Ken

[texken]

Rear Drive

[texken]

Drive Wheels

[JensR]

Looks good!
So you make "only" the front axle steering?
Sorry to repeat myself, but I am slightly concerned about the motor being billed as "1000rpm". That sounds quite high and I would have expected (as I said earlier) 100rpm to be more realistic - but if you have done the tests and it works, that's great!

Also, what scale is this?
The first post says 1:25, but this looks bigger?

Cheers
Jens

[texken]

Well, maybe 100.
Rear drive only.
Will be 1/14 scale. Used info from member to find size.

Thank you for looking.

TEXKEN

[texken]

How have Wheels.
Waiting for steering servo.
Need radio, any good input for a radio to run chassis and Crane with one radio??

TEXKEN

[texken]

Need radio, any good input for a radio to run chassis and Crane with one radio??

[Rebekah_harper]

Originally Posted by texken

Need radio, any good input for a radio to run chassis and Crane with one radio??

Hiya,

Have you thought about a DX8 spektrum.

8 channels and model select. This is when you change the model program on transmitter it will select the reciever you bound to that program.

Which means you can have 3 separate servo circuits with 8 channels each.

1: Truck
2: Legs/stabilisers (allows for individual motion)
3: Crane. (means no need for cables or contact disk for power/control up the centre.

[JensR]

Looks good with paint!
I wrote this previously regarding radios:
http://www.rctruckandconstruction.co...5&postcount=49

[texken]

Now have working chassis.
Will get the gray paint, then start on Crane.

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

TEXKEN

[JensR]

This sounds as if you are barely using the throttle?
That crane is going to be fast

[texken]

Yep..... Will need power when Crane is mounted.

Ken

[JensR]

Power is proportional to speed times force.
So, for a given power: If it is fast, then it is weak.
I'm a bit worried that you indeed might have the 1000rpm motors, in which case you won't be happy, I fear.

[texken]

Thank you for input.
Well can be changed if needed.
Ken

[texken]

Test of Turntable

http://www.youtube.com/watch?v=qpIryYnZUzQ

[JensR]

Seems to run really smoothly!