Out of Africa! (Or Letters from Uncle Dick)

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dana
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Postby dana » Tue Apr 06, 2010 7:50 am

heres a site where you can get a Td 24 international and liberate the tracks , the rest of the dozer could be used as various things ( rember this hapening in zimbawe when i was there ) :P
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Trevor Coburn
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Postby Trevor Coburn » Tue Apr 06, 2010 6:50 pm

Thanks for the thought Dana, but getting any thing here is between very difficult to impossible. :evil:

The other thing is that as somebody else pointed out that dozers / tracked load shovels have tracks with grousers (teeth) on them and cranes / paving machines have flat plate tracks with (normaly) holes in them to reduce ground pressure build up. But like every thing else in this world (well on this site anyway :shock: ) there will be an exception to the rule!


[For those that are intrested I am doing my bit to help relive the chronic West Africas power shortage, and on this project also raising steam using waste heat, a first in this part of the world}
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Trevor Coburn
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Postby Trevor Coburn » Thu Apr 08, 2010 9:16 pm

Well here some more progress, now just got to do the interior (when I find some pics of a suitable "lump" IRRC they had Ruston 3YDWX engines, but going to depend what I can find in the 'Bush'
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Track pads still need another layer on them, corigated cab roof (and a lot of the rest) is held on /together with masking tape so it goes home 'flatpack' style. (shades of Ikea?)
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Postby dana » Fri Apr 09, 2010 3:09 am

" but going to depend what I can find in the 'Bush' "

steam powered :?: :twisted:

sounds kinda steam punkish hey
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Trevor Coburn
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Postby Trevor Coburn » Mon Apr 12, 2010 7:43 pm

Well while others have been pottering about doing 'spring cleaning' gardening & other domestic chores, I (relieved of these by not being at 'home' :D ) have been busy with the plasticard and scaple!
The jib (aka mast, boom or stick) is in three sections, as the protype. Two 10 foot (3m) and one 8 foot (2,4m). Now just to do the interior because it will always opperate with the rear (curved & sliding) doors open. then work out a way of motorising it...............Just to give an idea of size the track panels are a nominal 6" (150mm) radius.

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As always comments, critisisms, or suggestions welcome
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Postby gfadvance » Mon Apr 12, 2010 8:06 pm

I'll bet you had some fun with that jib :D

Amazing what you can build - even with limited resources when you set your mind to it , great work Trevor
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Postby Oztrainz » Tue Apr 13, 2010 7:39 pm

Hi Trevor,
2 words - OH WOW :!: :!: :!:
:twisted: :idea: if a couple of photos, and a video link with some rough measurements helps you to create this under your African conditions, then perhaps I'd better find out what else you want.....
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Postby Glen A » Tue Apr 13, 2010 8:06 pm

WOW!

That’s one seriously, stunningly, good piece of work!

AND you are going to motorize it! :shock:
I'm really jealous.

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Trevor Coburn
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Postby Trevor Coburn » Tue Apr 13, 2010 9:08 pm

Thanks for your kind comments guys, :shock: :o . In case anyones wondering there is just over 200 indvidual pieces in the jib..........
I have planed to motorise it, but only to slew, luff & hoist. Making it travel would not be impossible, but I aint going to do that. But that stage is a long time in the future. (As is the layout.) :evil: Unless of course SWMBO, wins the lottery & I can retire! (dream on kid - even if she did I wouldnt be allowed to stop working!)
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Postby underworld » Wed Apr 14, 2010 5:09 am

Awesome crane Trevor!!! 8) 8) 8)


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Trevor Coburn
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Postby Trevor Coburn » Fri Apr 23, 2010 9:05 pm

Well we found an engine, its a real "Bitza" (OK it's got three cylinders, bears some resemblance to a Meadows, with bits of Perkins, Dorman & Ruston thrown in!!)
The cone item after the flywheel housing is the Rockford overcentre clutch, before the chain guard on left. To aid the "flat pack" concept the engine has lugs under the sump (oil pan) to locate on the engine bearers.

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Believe me there is not a lot of room inside the cab of the machines when all the machinery is there! (Still got the scars :roll: )
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Postby Willow Creek Traction » Fri Apr 23, 2010 10:03 pm

Trevor Coburn wrote:Believe me there is not a lot of room inside the cab of the machines when all the machinery is there! (Still got the scars :roll: )

We'll believe ya: No need to get more scars to prove it!
And please don't add more while doing all that cutting :D
This model when it's finished is going to be fun to know the story behind.
later, Forrest Today's scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality. -- Nikola Tesla, July, 1934

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Glen A
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Postby Glen A » Sat Apr 24, 2010 4:24 am

Great work Trevor.
Hopefully you are going to leave the back wall open, so you can actually see your motor when its finished?

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Postby rockershovel » Sat Apr 24, 2010 6:58 am

I assume the sliding rear door will be open to show the interior, like most old Ruston and Coles cranes I remember seeing working?
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Postby DCRfan » Sat Apr 24, 2010 8:09 am

Top craftsmanship displayed making the motor. I can positvely feel it thumping as it idles.
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Trevor Coburn
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Postby Trevor Coburn » Sun Apr 25, 2010 3:47 pm

So now we have a radiator, operators seat & some controls :shock: Still to do are the winches, final drive chains. Lots of other details too.

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There is a grouve for the rear doors to slide in, but I am NOT going to make them :lol:

So I guess now I will have to incorporate not only a sound module, 3cyl lumping along at around 750rpm, going up to 1200 when hoisting, smoke unit with oily blue diesel fumes, and another smoke unit for steam from top of radiator...............not!
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Postby underworld » Sun Apr 25, 2010 4:13 pm

The motor looks awesome Trevor!!!


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Postby Oztrainz » Mon Apr 26, 2010 1:50 am

Hi Trevor
Let me know when you are heading back to the UK and I'll send you an audio wav-file of a handcrank "start and idle" soundtrack from a video of our 3-pot Ruston 40DL. Next time "Condong", our 40DL is out and I've got my video camera handy, I'll try and grab an "underload rev" to 1250rpm to get your host/slew soundtrack. With something like a Dreamplayer and an Audacity freebie audio editor, you could splice a start sequence, looping idle sequence. under load sequence and a shutdown sequence.
Hide your speaker under the floor. :wink:
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Postby chris69 » Mon Apr 26, 2010 3:34 am

Hi Trevor,
absolutely fantastic.As rugged as the real one.
Some time ago I built one based on the FUCHS 500
and a crane that had no real prototype.
Her are my bragging pictures:

The FUCHS with the rigging removed,built on an EMEK chassis

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Here is the crane,I used a toy to build the lower and used the slewing gear and base of the upper to build the crane.Originally it was to be one used By MAMMOTH DAVENPORT that is the reason for the yellow and grey color.Since I could not find the proper decals I made up my own company,with it's own colors.
The boom came from KIBRI HO crane models,I still have the boom from the GOTTWALD model one of these days it will be used.

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The change from the shrt to the long boom.

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Oh I forgot I also built a tower crane.

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Sorry Trevor,I did not mean to hijack your thread,just got carried away a bit.


Enjoy
Chris :roll: :lol: 8)
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Trevor Coburn
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Postby Trevor Coburn » Wed May 12, 2010 6:52 pm

Well, suprise suprise all traved safely & unbroken back to the UK :D

So a bit of paint, and the following pics show how "Uncle Dicks" crew moved it up the line, on a flat truck and a couple of skip chassis :shock: Then it was erected on site.
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Engine, PTO, chain case & radiator on flat truck.

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Underworks on skip frame

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Upper works on flat truck

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Jib [mast / boom] on two skip frames

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put together

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rear view.

Now a lot more fine detail fittings, body panels to go on, then the roof, and at some time in the distant future a layout!
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chris69
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Postby chris69 » Wed May 12, 2010 7:04 pm

Absolutely fantastic!

Can't wait to see the progress.
Greetings
Chris :roll: :lol: 8)
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Glen A
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Postby Glen A » Wed May 12, 2010 8:07 pm

Wow :shock:

That last photo gives more of an idea of size (compared to a skip).
Bet you are glad it made it back without damage!
And nice to see it with some paint on it.

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Postby JackBlack » Thu May 13, 2010 7:56 am

Nice work there Trevor. Do you have a trackplan yet??
Jack

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Postby DCRfan » Thu May 13, 2010 9:08 am

Excellent story and modelling. I am rather concerned with the track links - all the grousers have been worn away. Beware of slippery slopes :P
Paul

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Postby SOUTHPASS » Thu May 13, 2010 9:38 am

I think you will find that smooth plates are pretty well standard on excavators, cranes and draglines. Bulldozers are a different story.
Seeing the confines of the engine area reminded me of an old Linkbelt that I operated back in the early 70's. It had a 4 cylinder cat motor, the same as in the old D7's. To get it going you had to first get the pilot motor running and to do this I had to squeeze behind the motor to get at the crank handle. Those little b@$#@&%$ would kick back if everything wasn't just right. When the linkages were worn you could spend as much time adjusting brakes and clutches as you did moving dirt :lol:
.....WARNING....
Contains images that anoraks may find disturbing.
1:24 scale 16.5mm gauge.
Yes I know it's all old and rusty, but I just model things as I see them......
Have a good one....John B.


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