42009 outrigger problems

[aminnich]

Hey guys,

I finished building my 42009 crane, but the outriggers wont go down?! they go out and everything else works. I looked over everything to make sure I didn't forget anything, but all look good. Can any think of anything else that might be the problem (not including the user)

[Zerobricks]

Can you tell more what happens when you turn outriggers on? Any grinding noise, does the motor stall, or is the motor spinning with no load?

Edited December 28, 2014 by Zblj

[efferman]

The bevel gears on the outriggers are on the correct place? At inside of the left and at the outside on the right?

[aminnich]

the bevel gears are correct.

It sounds like motor cant handle the load.

[dhc6twinotter]

What about the bevel gears in the middle of each stabilizer section? If one of those is backwards, the front and rear stabilizers will fight each other.

[aminnich]

that is what efferman was taking about

[dhc6twinotter]

I believe the bevel gears efferman was referring to are the one above the mini-LAs. The gears I'm referring to are further inside and are connected to the axles with 8 tooth gears. All of these bevel gears need to be in proper position for things to work properly.

Edited December 28, 2014 by dhc6twinotter

[aminnich]

I just did the motion without using a motor, it worked by was pretty tough to do. So that means that the gearing is fine.

[Leif]

I just did the motion without using a motor, it worked by was pretty tough to do. So that means that the gearing is fine.

If it feels pretty tough to turn the gears manually, that is probably the issue.

you tested the motion not through the supersection? the remaining gearing adds even more friction.

Look through the drivetrain to the the outriggers, all the way from the motor. probably too much friction. this drivetrain is really long and complex!

[1974]

Worst. LEGO. geartrain. evar!

[aminnich]

It is a terrible geartrain, too bad it is not staying together too long. Need the parts for a project im working on.

For those of you who are curious, the geartrain going from the motor to the up/down movement of the outriggers is 53 gears. That is CRAZY!

[dhc6twinotter]

While I agree that the geartrain isn't the best, it's still much more awesome than the partially manual outriggers found on the 8258 Crane Truck. Lots of people complained about having to manually lower the outriggers on it. And, having the fully motorized outriggers on 42009 meant LEGO had to provide us with those great new sliding 8 tooth gears.

Edited December 29, 2014 by dhc6twinotter

[aminnich]

true and we got a lot of gears for a simple motion. 53 gears to lower a buncha LAs, I am fine with that. I will find a use for them somewhere, but not all for the same thing, haha

[DrJB]

I guess the reason for such a large number of gears for the outrigger function was the constraint that the designers had to use a single motor for ALL functions. Plus, powering a chassis functions from the superstructure, while ingenious (sending power through the turntable a la Jennifer Clark), has serious drawbacks. At the end of the day, you wonder which is more costly, the many gears needed to achieve such function, or an additional chassis-mounted motor.

Edited December 29, 2014 by DrJB

[aminnich]

I see what ur saying

[technic70s]

I had this exacte same problem last night, in the end it was the fact that the new LA's where new and screwed up all the way. I disconected each one, (pull out the long drive axel) and turn the LA by hand to free it up and get it moving, reconect the drive axil, then drive it up and down with the motor, then add in the next out rigger to the system, slowly freeing up and connecting one at a time.

It is a bad design that struggles to drive all that friction through the system. Good starting piont for MODing

[aminnich]

Thanks to the tip.. But the model is already in pieces and ready for MOC-ing