8421-1: Mobile Crane

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0.3
5
8421: Mobile Crane
8421: Mobile Crane
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8421
Mobile Crane

Awesome Crane!

Posted by bambalero in Mexico on 06 September 2009

Hi everyone,

I bought this set about 3 years ago, and just recently built it again.

If you are looking for building challenge and fun, this is a set to go. As other were saying, this will take hours (blissful hours) from your time....

I like the yellow color and all the functions - on the chassis (which you assembly first for both A & B models) you can see that it has steering on 6 out of the 8 wheels - the back ones turning the opposite to the 4 front ones - the turning ratio is great, allowing you to turn the whole crane on very little space. Another function is the lowering of the stabilizers, when they are all the way down the crane won't move. Sadly the steering wheel on the cockpit won't turn the wheels but you can't have it all right?

About the crane itself - A model:

The crane goes as the boxs depicts, a long way up! - this is my first and only pneumatic set, so I am not very familiar on how pumping works. I noticed that after a while, the pumps lose the air and pressure and the crane slowly falls - I am talking that this time would be hours, I noticed it on the morning. I solved this by adding an axle that would work as the one on the hood of real cars.

The crane has two battery powered functions - one to extend the telescopic boom / string and the other to raise / lower the string. It is a pity that when extending the boom the string also moves. I would have liked to have three movements - 1) only string 2) only telescopic and 3) both.

About other features - you have a V6 mounted which looks easily when you raise the crane, although maybe a V8 or 10 would have been more believable. It comes with a sheet of stickers, I did not apply them and I think the model does not need them to look great on display.

Overall, this is a great set. Do not expect it to get it cheap, but every cent is worth it. I have not built the B model - which is a lame (personally) option for the crane. Be sure to get your hands on it if you are a die hard fan as I am sure you are!

A word of advice - dust your legos often, and try to place them in a way to keep sunlight from them - bleaching from the sun affects these ABS bricks like you would not imagine.






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0.3
5
8421: Mobile Crane
8421: Mobile Crane
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8421
Mobile Crane

A beast to build

Posted by the_squid in Netherlands on 15 June 2009

When I first saw this model, I really wanted it...
Mechanical wise is it a very good copy of the real machine.

It's a big rig to build, so don't think you can build it in an hour or 2.
The build is nicely split up in different numbered bags.
Which saves you alot of time / work sorting all pieces out before you begin.

Pro's:
- It's BIG
- It's very 'real' compared to the real crane
- If you can get this one: buy it
- The steering is very nice

Con's:
- 1 or 2 steps in the instructions weren't too clear what you should do
- The pneumatics are a little light to keep the extended boom up
(you need to really pressurize it)


2 out of 2 people thought this review was helpful.
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0.3
4
8421: Mobile Crane
8421: Mobile Crane
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8421
Mobile Crane

Big..

Posted by Tholias in Netherlands on 17 April 2009

Going straigth away to the Pro's:
- Big..
- Comes with a standard motor
- Good realistic look, due to the combination of both studded and studless parts in the right places.
- A number of nice features, including six wheel steering, stabilisation "legs" and pneumatics

Cons:
- The downwards movement of the crane arm, is too fast.. it causes the whole thing to come crashin down
- Lengthening the arm, often causes some trouble with the wire..

1 out of 3 people thought this review was helpful.
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0.3
5
8421: Mobile Crane
8421: Mobile Crane
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8421
Mobile Crane

COLLOSAL!

Posted by 126x on 16 July 2008

A collosal model and although pricy worth every penny. Worthy of the Lego flagship, the features alone make this model a must. The only thing I would question is the colour - I think this would have looked amazing in blue or orange.

1 out of 6 people thought this review was helpful.
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0.3
3
8421: Mobile Crane
8421: Mobile Crane
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8421
Mobile Crane

not brilliant as a functional toy

Posted by matt in United Kingdom on 28 January 2008

the detail (3 wheel steering etc) is very good and fun to play with so for that i give a five out of five but the crane part isnt as good. i have given up trying to extend the boom by the motor as it takes forever while the crane is spooling in the hook and the clutch kicks in way too early. the clutch also kicks in when lifting objects too early. i know that they are clutches to stop overloading the motor but they could have set them to kick in after a longer time! apart from those mishaps a great build with lots of pieces and great detail.
the mishaps, however are such a downer on play that it is lowered to a 3/5... sorry.

5 out of 9 people thought this review was helpful.
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