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  #21  
Old 02-21-2011, 10:47 PM
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Default Re: Another Unit Crane

Doepke made some that had a thumb wheel to rotate the crane.

Here is a pic that might help with routing the string.

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  #22  
Old 02-21-2011, 10:53 PM
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Default Re: Another Unit Crane

by golly i think we got it right!

for your top servo mount, does it bend down then go to a standoff and bolt to the floor?
Also how is the angle aluminum mounted at the floor?
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  #23  
Old 02-21-2011, 11:03 PM
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Default Re: Another Unit Crane

Quote:
Originally Posted by Stuff View Post
by golly i think we got it right!

for your top servo mount, does it bend down then go to a standoff and bolt to the floor?
Also how is the angle aluminum mounted at the floor?
The top mount is only attached at the rear. The bottom angle aluminum has a threaded hole and has one screw coming up from the bottom, towards the front. I made the assembly like a "wedge" and the two mounting points just secure the assembly. Remember that all of the drums only pull in one direction...
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  #24  
Old 02-22-2011, 12:35 AM
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Default Re: Another Unit Crane

video is done.

http://blip.tv/file/4796983

should be on youtube tomorrow.
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  #25  
Old 02-22-2011, 08:17 AM
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Default Re: Another Unit Crane

Cool you got it running. It does look like you have the ropes routed properly.
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  #26  
Old 02-22-2011, 09:34 AM
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Default Re: Another Unit Crane

Many thanks to Stuff and Small Haul for the well documented conversions of these older toys. Any chance one of you might put a motor and driveline under one of the cranes?

Lynn
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  #27  
Old 02-22-2011, 09:39 AM
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Default Re: Another Unit Crane

LOL everyone wants one of them. Scott is making a tracked one and i think im gonna just pull mine around for now lol. kinda expensive upgrade to it for it to move so little. Scott's tracked one is gonna use a separate rc gear for the tracks and i dont blame him. he would have to get one of those center things that lets you run the wires down and being servo that would 6 wires worth and not cheap to do!
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  #28  
Old 02-22-2011, 11:43 AM
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Default Re: Another Unit Crane

Also some info on those servos. Apparently it only has one metal gear... but it does have dual ball bearings.

Modulation: Analog

Torque:
4.8V: 201.4 oz-in (14.50 kg-cm)
6.0V: 213.9 oz-in (15.40 kg-cm)

Speed:
4.8V: 0.19 sec/60°
6.0V: 0.16 sec/60°

not sure what speed works out to but it seems fast enough for me!
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  #29  
Old 02-23-2011, 08:08 PM
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Default Re: Another Unit Crane

them center "things" dean are called slip rings i have heard of ppl using ball bearing. i never try my self yet. just make shere you get steel ball's.
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  #30  
Old 02-23-2011, 11:23 PM
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Default Re: Another Unit Crane

Quote:
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them center "things" dean are called slip rings i have heard of ppl using ball bearing. i never try my self yet. just make shere you get steel ball's.
whoops i ment centering things. but yea a metal ring would work to.
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  #31  
Old 02-25-2011, 12:34 PM
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Default Re: Another Unit Crane

this is what i plan to do for an extension of the boom. see how it goes out then back in for thickness? well at the unit crane's hinge point i want to add an extension like Scott did. should make loading trucks easier!




also this crane is for sale on kijiji in alberta :P dont ask why i was looking that up lol
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Last edited by Stuff; 02-25-2011 at 12:35 PM. Reason: forgot pic lol
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  #32  
Old 02-25-2011, 11:48 PM
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Default Re: Another Unit Crane

how much
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  #33  
Old 03-08-2011, 10:29 PM
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Default Re: Another Unit Crane

well so far the string arrived, and today the bucket and the magnet arrived. magnet is lame but it was dirt cheap.




get a feeling how small this stuff is?



another rant. why the h-e-double hockey sticks would you paint up brass parts and brass chain.. *facepalm*
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Last edited by Stuff; 03-08-2011 at 10:33 PM.
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  #34  
Old 03-14-2011, 07:05 AM
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Default Re: Another Unit Crane

Anybody who would cut up a vintage toy, especially a crane, and power it up with RC stuff...is OK in my book! I love this stuff! Dan
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  #35  
Old 03-14-2011, 09:23 PM
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Default Re: Another Unit Crane

The way I see it, we are giving these toys a new life. Sure we might be changing and cutting them up, but for the greater good, not a scrap pile.
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  #36  
Old 03-15-2011, 04:21 AM
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Default Re: Another Unit Crane

...And as long as it's OUR toys, well, now they're better toys!

I have plans to power up this 1/25 crane eventually.




It won't be self contained though. it will be mounted on a diorama, and the motors will be under the table. the upper unit will be fully functional, the tracks will be planted. I may build a truck type carrier chassis for it however. It too would be mounted to the dio. I did a similar convesion on an O scale (1/48) Northwest crane, smaller than this one. It was for a guy with an elaborate big bux model railroad. The crane worked well. I didn't have a digital camera then.
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  #37  
Old 03-15-2011, 10:20 AM
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Default Re: Another Unit Crane

Ah, kinda like the demo that the coal mines have. its not wireless RC and they have a slot cut out that the cables follow along. Mind you I havent seen one since i was a kid but there has to be a dragline RC sitting in someone's garage or something that worked at the mines...
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  #38  
Old 03-21-2011, 12:34 AM
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Default Re: Another Unit Crane

So I got out to Mog's today again. Lucky bugger gets to go to Vegas monday for the big iron show.

got the vex gear kit in


Got the bottom off the crane house


not without a fight



got the gear mounted




Got it back together




Time to play!


Martin got a good bucket full!


Filling the truck


And that is a bout as far as we got before the radio started freaking out. then the bucket lift servo has seemed to stopped working.. gotta take a better look at it i guess.

oh well next time!! gotta make Mog a good video to!
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  #39  
Old 03-21-2011, 01:16 AM
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Default Re: Another Unit Crane

Making some good headway on the project Dean, what's next to tackle?
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  #40  
Old 03-21-2011, 01:20 AM
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Default Re: Another Unit Crane

extending the boom and getting a good radio to use in it.
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