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Hansebubeforum » 1/50 » 300 ton demolition excavator » Threadansicht

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000 — Direktlink
25.01.2013, 03:13 Uhr
Jason



I saw the Kobeloco sk3500d and thought why not design my own since the 3500d has been out for a few years. I started with the LR1280 under carriage and started designing the rest. I am calling it the R300D.

I am going to start with a 30m short triple boom and then will start on a longer set up after that. For now I am not going to go with a tele boom just a standard long boom with a few a bunch of different sections for different setups.
I am not good at taking pics while I am building so I only have pics after I finish at the end of the night before bed or the day after.

I did most of this work in 3 days





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http://www.jaynikl.piczo.com/?cr=1
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001 — Direktlink
25.01.2013, 03:26 Uhr
Jason





This is a picture next to my R50D, 50 ton demolition



Will post more tomorrow. Next I work on the section where the main boom will attact. Everything will be able to be broken down for transport

Jason
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http://www.jaynikl.piczo.com/?cr=1
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002 — Direktlink
25.01.2013, 10:40 Uhr
refo-tech.de



Hallo,
geniale Projekt. Viel Spaß beim Leitungsbau, der hat mich bis jetzt vom Bau des Modells immer abgehalten.

Freu mich auf Bilder hier

Gruß
Bernhard
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003 — Direktlink
25.01.2013, 17:31 Uhr
Jason



Well more progress pics.
Frame for boom adapter done.



Adapter for main boom, will be a one piece boom setup to remove main boom and cylinders





Added a guy to give feel of size



Next main boom.....

Jason
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004 — Direktlink
25.01.2013, 17:38 Uhr
P.H.



looks really good !
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005 — Direktlink
26.01.2013, 14:05 Uhr
Jason



Ok time for the boom



I also added a cab. It is an oversized cad for more comfort for the operator





Next to Hitachi 870



More to come
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006 — Direktlink
27.01.2013, 14:51 Uhr
Jack.

Avatar von Jack.

Looks awesome Jason
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Grüße aus Großbritannien

Jack

Heavy Cranes
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007 — Direktlink
27.01.2013, 16:22 Uhr
Jason



Thanks for the replies, hope you all are enjoying this build

now for the rest of the boom and stick



getting the stick set up



stick done needs some cylinders now



cylinders done



next will be the counter weight set up
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008 — Direktlink
27.01.2013, 16:59 Uhr
Kran-Freak-Domu (†)



Good work, well done.I am looking voreward to see more....
--
Wie immer m.f.G. aus der schönsten Stadt im Pott.
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009 — Direktlink
01.02.2013, 20:31 Uhr
Jason



Ok now for counter weight set up. The up will be set inside a protective case. There will be 85 tons of weight.
i first made box and designed weights in cad system.
then i cout them out of plexyglass with the laser.



The set has one base plate with lifting arms. 5 weight plates 1 top plate




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010 — Direktlink
01.02.2013, 20:54 Uhr
Jason



here is a pic comparing 870 to the R300





next the working tool. concrete cruncher

jasonvh
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011 — Direktlink
02.02.2013, 09:29 Uhr
janh

Avatar von janh

Very interesting project,Jason.And Your scratch building abbilities are simply outstanding.
I have one little critizism.A machine of this size would require very much horse power to run the hydraulic pumps.This is one of the main differences between a UHD excavator and a crane.The crane can have a smaller engine,because it "only" has to run the cable drums.
A big engine requires very much colling power,especially when this machine would have to work probably almost 24 hours a day at a demo site to be cost efficent.But the radiator grill on Your model is not much bigger than the one on the small Hitachi.
Besides from that Your concept looks very well planed and realistic.

Last year around september I had imagined myself what could be the future of demolition equipment and what a huge demo excavator could be based on.And my idea was to stretch a Liebherr R9250 and combine it with the telescopic boom from the LTM 11200 crane.Then replace the boom head by a joint link,add a reduced boom from a LTM 1160,followed by another link plus a 25m straight section.This would be a demo machine that weights more than 500 tons and have a maximum reach of about 180m,being able to take down a sky scraper.
I did not plan it any further than this quick photo shop.

I don´t think this is too realistic.Problems would be for example the operater would not be able to see what he actually crushes because he is simply too far away in his cab.And what would happen when parts of the building would fall onto the ground from that height...

Another idea would be to have a whole fleet of autonomous working small robots that would eat the building from inside like ants,radio controlled and monitored from outside the building.
This imagination of course would look much less spectacular in model form,but it´s much more realistic than having such a big monster.

I´m glad I´m not a engineer......

btw Have You yet thought about a colour scheme for Your machine?
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012 — Direktlink
09.02.2013, 18:34 Uhr
Jason



I hear what you are saying Jahn. I already thought about the cooling system. I was going to add an additional radiator on the rear. Just going to wait til I had moreof the boom system finished.
I like the set up you drew up though. Would be a huge machine.

Here is the concrete breaker




Next is the railings for the machine
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013 — Direktlink
11.02.2013, 20:09 Uhr
JensHG



Hi Jason

Very great Modell... :-)
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014 — Direktlink
11.02.2013, 21:03 Uhr
Rico I.

Avatar von Rico I.

Hi,

fantastic
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015 — Direktlink
18.02.2013, 03:55 Uhr
Jason



Ok here are the railings installed






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http://www.jaynikl.piczo.com/?cr=1
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016 — Direktlink
18.02.2013, 04:04 Uhr
Jason



Here is some comparison pics allong side the Hitachi 870







I tore apart the upper today and redid the cooling system

jason
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http://www.jaynikl.piczo.com/?cr=1
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017 — Direktlink
20.02.2013, 19:25 Uhr
Jason



Alright here is the redone readiator/ cooling system







Jason
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018 — Direktlink
21.02.2013, 05:09 Uhr
Jason



I got the boom extensions done. starting to get some heigjt now






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019 — Direktlink
21.02.2013, 05:11 Uhr
Jason







I am working on the rest of the long boom now

Jason
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020 — Direktlink
21.02.2013, 07:44 Uhr
P.H.



really nice work !

it looks so awesome ...


what skin he gets ?
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021 — Direktlink
21.02.2013, 16:29 Uhr
Kran-Freak-Domu (†)



Well done, god work.It`s looking fantastic !!!
--
Wie immer m.f.G. aus der schönsten Stadt im Pott.
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022 — Direktlink
21.02.2013, 18:59 Uhr
jelco

Avatar von jelco

Are u going to make crawler's yourself instead of those of the LR 1280?

Nice model!
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023 — Direktlink
21.02.2013, 20:38 Uhr
percheron

Avatar von percheron

What an amazing model! Fantastic work.
--
Gruß Achim

( Mitglied der Berliner Fraktion )
Immer auf der Suche nach allem von Breuer und Maximum.
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024 — Direktlink
22.02.2013, 13:07 Uhr
Pegaso



Good work, amazing model.
Congratulations.
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