[MOD] 42009 Mobile Crane - MODs and Improvements

[Phoxtane]

I'm excited about the Ultimate instructions. My 42009 supposedly gets here Friday, so I'll have all weekend to play with it!

[afol1969]

You can use 8878's In the truck it will work fine, it'll even allow esea installing of PF-light on the rear. However, on the upperstructure, I'd advize to use the normal AA-b-box, because it's a lot heavier and it functions as counterweight. IMO it could even use some more couterweight.

BTW, it needs 2x short PF-extention cable. Lights of course are optional, add those to your liking (and depending on your parts-collection). The main reason I uses lights, is to make it easier to see if the battery-box is on or off.

Hi Jurgen,

I have the 88000 AA-box from the Passenger Train left, so I can use it. But how much PF Receiver Units does the Ultimate 42009 need? I think I've to dismatle my fully remote controlled "Ultimate" 9397 to use the PF parts (first I've to make instructions :-X ....) and I have some extension cables to buy.

Ok, I see, there's again a lot of work......

Greetings

Alex

[CisFran]

There are four receiver units based on the picture posted by Jurgen on the 1st page. I hope that's all of it

[Theo van Vroenhoven]

There are four receiver units based on the picture posted by Jurgen on the 1st page. I hope that's all of it

There are only four channels so more than four receivers would be useless (unless you would like to improve the receipt of a given signal)

Four channels enable eight motors and I think that is just enough.

EDIT:

• 1 x PF-XL-motor for drive
  
• 5 x PF-M-Motor for outriggers (2 x), steering, winch & rotation
  
• 2 x PF-L-motor: Boom lift, boom extention, Boom extention can propably be done with M-motor as well (not tested yet)
  

Edited August 22, 2013 by Theo van Vroenhoven

[TinkerBrick]

The boom extension can be done by a M-motor. I had the chance to beta test the instructions last week. Being short of a second L-motor (I didn't want to dismantle my 9398), I used another spare M-Motor. Mounting and reinforcing it is a bit different, two gears need to be changed as well. There is plenty of torque for the extension process, in fact the white clutch gear kicks in when the load is to high.

[peterg]

Excuse my ignorance, but i am new to Technic.

I have built the 42009 and am looking forward to the ultimate conversion.

Can you tell me:

Which transmitter should i buy? Maybe there is only one?

Would a PF "set" be a good buy for this project, or buy the parts separately?

What motor is fitted in the original kit?

Thank you.

[N-4K0]

The motor featured in the 42009 set is an L-motor. That's all I can add.

[peterg]

The motor featured in the 42009 set is an L-motor. That's all I can add.

Thanks! So i know what motors to buy.

[FuzzyBallz]

At this rate, I think I'll just wait on building the ultimate 42009 pending availability of the L Motor and V2 IR Receivers on S@H. I'm in no hurry now.

[camaudio]

Thanks! So i know what motors to buy.

Sounds like you will need 6 M-motors, 1 XL motor, 4 IR, 2 lights and 2 etc cables Plus the L motor it comes with

[peterg]

Sounds like you will need 6 M-motors, 1 XL motor, 4 IR, 2 lights and 2 etc cables Plus the L motor it comes with

Thanks!

And the transmitter?

This one?

Edited August 22, 2013 by peterg

[camaudio]

Thanks!

And the transmitter?

This one?

don't know yet how many or which type

[BigTonka]

My 42009 arrive today!!! Now I'm between starting to build it right away or wait until the release of the ultimate instruction... maybe it will be better to kill my anxiety by starting with the ultimate version of the 8043 instead :D

[Jurgen Krooshoop]

Tis is the remote I'm using. With 2 joystick, you're able to controll 4 functions with 2 hands.

Instructions for this remote will be included in the final instructions.

I hope to be able to publish the instructions next weekend.

[terenshi]

Tis is the remote I'm using. With 2 joystick, you're able to controll 4 functions with 2 hands.

Instructions for this remote will be included in the final instructions.

I hope to be able to publish the instructions next weekend.

Hi Jurgen Krooshoop

I am wondering could you release the part list first, if its ready . So that we can start buying parts now and be able to start building the ultimate 42009 when the instruction is ready next weekend.

thanks

[keroro]

Beautiful....

I finish now to build the original version....now i start to modify with remote control and to add the same motors of 8043...

And i want to change the ratio trasmission of the crane and try to lift more load....

[EyesOnly]

It is not the transmission ratio so much as the clutch gear that is preventing heavier lifts. And if you change that into an standard 24t gear then the integrity of the crane structure itself could fail. This model simply isn't very strong. If you want to lift heavy weights i suggest building your own crane, but i have no idea how to make a really powerful one.

[keroro]

yes...i switch the last two gear and the clutch don't start to slip...

The structure of the arm is resistent....the main problem is the point where the arm is connected at the base truck...

[camaudio]

The turntable always seems to be the weak spot on cranes. Someone posted a double turntable idea that should and a LOT of strength.

[davidmull]

Jurgen is that the same remote set up as ur pf backhoe? If so it would be handy as iv it built.

[Alasdair Ryan]

Jurgen is that the same remote set up as ur pf backhoe? If so it would be handy as iv it built.

I was just thinking the same....but now my backhoe is 300 miles away as I am now in sunny Glasgow.....Only a mile away from the Lego store though....

[MrNumbskull13]

I was just thinking the same....but now my backhoe is 300 miles away as I am now in sunny Glasgow.....Only a mile away from the Lego store though....

This is rather off topic but I think Glasgow was actually, well not sunny but at least not rainy. xD

[Jurgen Krooshoop]

Yes, it's basically the same as the remote for the Backhoe Loader V2. Actually, it's doing the same, but with less parts and it only uses the joystick-remotes. The Backhoe-remote had a speed-controll remote as well.

[Lost_In_Noise]

After building this mammoth yesterday in 7 hours(!), I was a bit disappointed by some of the original designs. Therefore I tweaked the model just a bit by adding some minor parts, and a PF switch.

On this photo, you will notice two differences, the first is the polarity switch, which should have been mandatory on all PF models.

The second one is the 24T gear on the string axle, which lets it lift something big without slipping.

Still, removing the battery box to change batteries is very easy. It is not so easy to spot in the picture, but the cover for the drivetrain(grey panels) has been modified somewhat to allow it to fully open to watch the gearbox underneath work. This was achieved by simply moving some of the 3L pins to alternate positions.

The PF switch is fixed in place with a 2x6 plate underneath, a "pin long with center pin hole" and an "axle and pin connector double" with some half-pins.

The photos were taken while it was lifting a Mini Mobile Crane (set 8067, which weighs 1/2 kilos. This is very near the limit of what this can lift with a full stretched out boom.

[N-4K0]

The photos were taken while it was lifting a Mini Mobile Crane (set 8067, which weighs 1/2 kilos. This is very near the limit of what this can lift with a full stretched out boom.

Is that with the boom fully extended to the upper point with the LA's fully extended? Or is it with the boom lower?