efferman

Effe's MOC Corner

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Sounds plausible. The Liebherr L1 makes 0.5/0.8 rpm, so i should end between this and 2rpm in max.

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Why not include a selector to choose between "realistic mode" and "play mode"? The former maybe 2 rpm max and the latter e.g. three times as much.

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3 minutes ago, suffocation said:

Why not include a selector to choose between "realistic mode" and "play mode"?

A gearbox needs a lot of space and i guess a highspeed mode would raise the risk of tipping over.

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Ah, good point. Anyway, this crane you're working on is awe-inspiring. Can't wait to see more!

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Finally all functions are together in one Video. Most of them are working in a proper Way, only 1.5- 1.7 rpm in rotation seem finally a little bit fast..

 

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Works great imho. The folding mechanism is ingenious.

Can it lift a few grams, e.g. a small battery box?

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The winch itself can handle 3 Batteryboxes including their batteries. The sled has problems with this weight to move. Another point to improve.

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The Sled is now working properly with 3 Batteryboxes. Next Problem is the outriggerbase. Under Load it is leaning to the Side.

 

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The white Towers representing the ballast weight which is mounted permanent on the Model. They are filled with roundabout 630 g 6mm Steelballs. Together with the Batterybox this is more than 800g Counterweight. Enough for light duty and on top is space for more.

49429748202_30b412ccaa_c.jpg

schnelleinsatzkran 2 by Michael Wirth, auf Flickr

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Everyday I can see the real model at my work 😀9FEC6A2A-E405-40DA-8AA1-9B53D7C48149.jpeg.c30586e916ba34c4999d46292c48386a.jpeg

41 minutes ago, efferman said:

A small break for lunch.

« Bon appétit »

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A part of the Gooseneck is done

49448695263_39dc2e9be5_c.jpg

 

49449692158_01526ce8bb_c.jpg

Edited by efferman

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On 1/27/2020 at 12:41 AM, virgule972 said:

Everyday I can see the real model at my work 😀9FEC6A2A-E405-40DA-8AA1-9B53D7C48149.jpeg.c30586e916ba34c4999d46292c48386a.jpeg

« Bon appétit »

Not something I have seen before is the crane self propelled or towed and who makes them kind regards matt 

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The Rolling chassis is now complete. The Trailer axles are suspended.

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edit:

Trailer for counterweights when Crane is upright.

49459887302_3624c16976_c.jpg

Edited by efferman

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Great work @efferman! Having previously tried to build a self erecting tower crane, I can understand how difficult this project must have been.

 

16 hours ago, brickless_kiwi said:

Not something I have seen before is the crane self propelled or towed and who makes them kind regards matt 

Pretty sure that's a liebherr mk140/110/100. The company appears to be mediaco from France.

Edited by Beck

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17 hours ago, brickless_kiwi said:

Not something I have seen before is the crane self propelled or towed and who makes them kind regards matt 

This particular folding tower crane is self propelled, but there are towed versions. A number of companies do make them, including Liebherr and Spierings. Google Self Erecting Tower Crane, and that should give you more info.

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A mediaco crane

A very strange self-supporting crane, because the mast stands vertically.  

I will try to take photos when it is in operation.

Edited by virgule972

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The Basic Counterweight is done and should be enough to rise the Crane. Maximum hook height is actually  at 95cm and the Boom is 126cm long

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Test 10 of my self Raising Crane. Unfortunately the Base counterweight is not enough for rotating with the transport chassis on the hook. And i have discovered a small problem with rope suspension of the boom.
 
Edited by efferman

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Test 11 and the stability problems seem to be solved. A new upper collumn and a quarterpiece turntable with 1x1 round tiles between the two parts working finally

 

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Hi Michael

Will you be attending/showing any of your models at "Modelshow Europe" in Ede, Netherlands on March 21st this year as I would love to finally see your work with my own eyes.

Thanks

Chip

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