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Giles
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My new layout involves the trans-shipment of cable drums out of the factory (by narrow gauge) to either road or standard gauge. I have already built a working gantry crane, but thought it would be fun to see if I could provide a mobile crane as well.

I found a Russian Maz 200 model on EBay and converted it for RC using DelTang 16ch receiver.

http://www.youtube.com/watch?v=6sG-W0Rxlzg

Last edited on Sun Sep 11th, 2016 12:12 pm by Giles

davecttr
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Superb, how about having a go at radio controlled people!

W C Greene
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Yes, most excellent. Now, to those who say "It can't be done" and "All that equipment can't fit into my HO locomotives"...just remember that these are O SCALE TRUCKS, smaller than many HO locos.
Giles has done it again, masterful work, imagination, and a great soundtrack for this video.
Thank you sir.

Woodie

bobquincy
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That is just great, amazing mechatronics!  Even the stabilizer legs work!  How many motors (and what type) are in the crane?

Giles
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Thank you - all!

There were a few problems to over-come with this, certainly.... One of them was how to (successfully) make operational stabilisers within the confines of the space.
This eventually led me to re-creating the rear stabiliser block, with added internals (thanks to our little laser-cutter!) and powering one of the gears with a servo.

http://youtu.be/iu54SOSKlRk

Last edited on Sun Mar 19th, 2017 03:44 pm by Giles

Giles
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The Motors were the usual Motor/gear units I use (6v) in a variety of ratios, two which winch drums added, and one with a gear for the slew added. These of course had to have power conducted via slip rings through the centre bearing of the crane.

Herb Kephart
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I thought--''the big hand in the sky is going to have to engage the hooks and spoil the whole effect''.

And I was wrong (again)!

Most impressive bit of modeling that I have seen in a long while!!
 

Unbelievable!

 Herb

DavidT
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Very impressive. The stabilisers are a nice touch and I like the slow speed and smoothness of all the moving parts. David.

Cor V
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nice, i am curious how you did the powering and other parts.please show us some pictures from the bottem and other moving parts
maybe my next project will be a crane on remote as well
Cor

Lee B
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What was the running gears for the truck portion? I badly want one or two radio controlled vehicles with this type of operation on my layout but have never found anything with scale speeds and smooth operation that small.

Cor V
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i have a potentional victema nice crane from speccast
you can find loads off small motors for winches, or use a servo for it
Cor

bobquincy
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This place
http://www.gizmoszone.com/shopping/agora.cgi?product=Gearmotor&user4=68series;ppinc=1g
has some small motors with a lot of gear reduction, down to 25 rpm and even one at 14 rpm
http://www.gizmoszone.com/shopping/agora.cgi?product=Gearmotor&user4=68series;ppinc=1g

Cor V
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http://www.ebay.com/itm/DC-6V-30RPM-Micro-Speed-Reduction-Gear-Motor-with-Metal-Gearbox-Wheel-Shaft-/111742307756?hash=item1a045c4dac:g:840AAOSwI-BWOXz2
Cor

dan3192
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https://www.pololu.com/category/51/pololu-metal-gearmotors

https://www.pololu.com/product/989

Dan

Last edited on Sat Dec 10th, 2016 09:45 pm by dan3192

W C Greene
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OK then, let's see some more operating cranes, etc. How about an operating crane (Brownhoist) that not only works but is capable of running by itself from job to job. I have seen such cranes do "double duty" as switch engines-in a pinch I suppose. Might make for some interesting operations on the layout!

Woodie

Giles
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The running gears were the same type of gear motor (Polulu have better starting characteristics than the cheap eBay ones) driving through a pair of plastic bevel gears to the back axle.

I finally built myself a four-joystick transmitter to drive this thing, based around a DelTang TX. It now handles very well and reliably.

http://www.youtube.com/watch?v=dtmj2a92sJw

Rod Hutchinson
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Giles wrote: I finally built myself a four-joystick transmitter to drive this thing, based around a DelTang TX.
Hi Giles.  Can you tell me a little bit about how you built the joystick transmitter using a Deltang TX?

Tony Walsham
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Hi Rod. Given that a Deltang Tx module is more or less the same as any DSM2 stick radio innards, you would probably be better off simply buying any DSM2 stick radio.
The most difficult thing to build are the gimbals that connect the sticks to the controlling pots.

Rod Hutchinson
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Tony Walsham wrote: Hi Rod. Given that a Deltang Tx module is more or less the same as any DSM2 stick radio innards, you would probably be better off simply buying any DSM2 stick radio.
The most difficult thing to build are the gimbals that connect the sticks to the controlling pots.

Tony, I am only familiar with DT tx / rx.  Some DT rx models can be controlled useing a DX3 tx.  I am going to put R/C into some 1:87 vehicles.

Can you tell me anything about DX3 txs'?
How would I choose a DX3 transmitter over a DSM2 stick transmitter?

Last edited on Mon Mar 20th, 2017 10:46 am by Rod Hutchinson

Giles
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Hi Rod,



The transmitter is based on a standard Deltang 6 channel (I think!) job, which Andy at Micron had built up for me as a temporary TX, as he was going to build a special four-stick (plus one knob) one for me. This temporary TX was simply a series of knobs, which was exceedingly difficult to 'drive' without causing the crane damage through over-runs.



However, Andy found that (all) the joysticks he planned on using were not accurate enough and wouldn't do the job - so he regretfully declined to take it further.



I, with the innocence of ignorance, and the drive of necessity, had to make it work.



The solution was to use 'Thumb joysticks' (which Andy was intending) which used as they come didn't 'zero', and things were in motion when they shouldn't be. I solved that by the expediency of (channel by channel) removing the pot from the side of the assembly, filing off all the locating lugs, putting the pot back on, and rotating it until it 'zeroed' and all motion stopped, and glueing it back on in that position.

Crude, but eventually effective....



The top two sticks operate the truck, and the bottom two operate the three crane functions, and the knob (lower centre) operates the out-riggers.


Last edited on Mon Mar 20th, 2017 01:19 pm by Giles

Rod Hutchinson
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Hi Giles,

I am really looking at three controls.

Throttle, Steering & Lights.

Using DT RX can steering be centre off with Left Right deflection for the turning using a rehostat or is it just a switch.

Giles
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Hi Rod,

For that you simply need the standard two-stick MLP4DSM Transmitter from ebay - its what I use. They can be set up for lights as well...

Tony Walsham
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Rod.
DSM2 is the operating protocol established by Horizon Hobbies for the Spektrum brand R/C.Other brands such as Futaba and JR cannot work with DSM2 protocols.
There are some brands compatible such as Orange, Lemon and Deltang that are compatible.The Deltang TX2 modules I and other builders employ will work any DSM2 R/X.
The DSM2 can be set up so that it works in a different fashion depending on requirements.
The DX3 is a Spektrum car controller.  It is lot different to the regular stick radios such as DX4 and DX5e.

DSM2 has morphed into DSMX which is now the uprated standard for TX's in The EU

Last edited on Mon Mar 20th, 2017 02:48 pm by Tony Walsham

Rod Hutchinson
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Thanks to Tony & Giles. The MLP4DSM tx might be the solution I am looking for.

DavidT
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Rod, DSM2 is extremely popular in its 'Air' version. The 'Surface' and 'Marine' versions are much less dominant, have fewer receiver options in the market and they can be much harder to bind with my receivers.

The MLP4DSM/'Blade' transmitter is normally easy to find on ebay and is compatible with 'DSM2 air'. It would be a good choice although limited in range like my Tx2 product. My Tx2 allows you to make custom transmitters and many cheap joystick transmitters can be a donor for high quality joysticks.
Regards, David.

Rod Hutchinson
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To DavidT,
Initially I hoped to operate a car using a 'rx45b for car' and my TX22 transmitter but I don't think that is possible.
Can I use other DT TXs?

Last edited on Wed Mar 22nd, 2017 04:07 am by Rod Hutchinson

Rod Hutchinson
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I have just purchased a MLP4DSM/'Blade' transmitter  from the UK. 


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