[MOC] Sennebogen 817 E

[Oliver 79]

Greetings Euro brickers.

I am proud to present my model of the Sennebogen 817 E.

This model has taken about a year and a half (if not longer) to finish. And to be honest, I'm glad it's over!

Let me start by listing the functions:

• four wheel steering via HOG on the back.
• outriggers (motorized).
• 360 degree rotation of upper carriage (motorized).
• Cabin raising and lowering  (motorized).
• Fully functional arm  (motorized).
• Orange peel grab  (motorized).

All the motorized functions are multi directional via the red switches on the top using one PF large motor.

I had many challenges along the way. The main problem to solve was bracing all the gears to stop the dreaded clicking. Unfortunately I started this project before the 'flip flop' beams were introduced. This probably would have made life a little easier, but I have no intention of starting again! 

The upper carriage is also a bit wobbly and I would have liked to build some kind of 'track' for it to turn on. The 'banana gears' are too big and I couldn't come up with a decent solution. Also, the lower actuator of the arm could do with being geared down a bit to give it more power. But again I couldn't find a solution due to space issues. I'd also only realised this problem when the main upper structure was completed and I started working on the arm.  

All in all the model turned out pretty well. But I realise there are a few differences between this and the real machine. I think the proportions are a little off and its obviously yellow not green....

I decided to use the orange peel grab from set 42006. It fits pretty well if not a little small.

One of the biggest challenges I had was taking decent pictures. I only have my phone camera and I couldn't get many decent shots due to the size. Fortunately I did manage to edit a mediocre video... All the functions are in real time, so I apologise if it's a bit long...

[media]http://www.youtube.com/watch?v=

[/media]

 

 

 

Thanks for looking. And as always, constructive criticism welcome.

Link to the Sennebogen website.

[Maaboo the Witch]

C'mon TLG, we need more lime panels! 

[jorgeopesi]

Very nice machine with a lot of functions  .

[Gray Gear]

Very cool with the raising drivers cabin!

Just out of curiousity, in those 1.5 years, how many hours a week do you think you worked on it?

[Oliver 79]

4 hours ago, Maaboo35 said:

C'mon TLG, we need more lime panels! 

I'd prefer green! 

2 hours ago, jorgeopesi said:

Very nice machine with a lot of functions  .

Thanks 

2 hours ago, Gray Gear said:

Very cool with the raising drivers cabin!

Just out of curiousity, in those 1.5 years, how many hours a week do you think you worked on it?

Good question. I don't know. There were some long periods where I didn't work on it at all. I just know it's been stuck on my lego desk for a very long time! 

[1gor]

Very very nice MOC; I suppose to integrate (at least) 8 motors to have fully RC model there is not enough space.

[Oliver 79]

2 hours ago, 1gor said:

Very very nice MOC; I suppose to integrate (at least) 8 motors to have fully RC model there is not enough space.

Thanks. 

I suppose if you put a couple of motors in the under carriage they might fit. But then where to put the battery box?

Personally I prefer the challenge of only using one motor and figuring out the gearbox. 

[Samolot]

A cool machine pretty well reproduced mechanics. But it looks a bit unfinished. However, I would try with lime colour. Now there are enough panels available to build this model. It seems to me that outriggers could work faster.  I would add a pair of panels 5 and 6 on the crane arm. It is very close to the great MOC

[1gor]

20 minutes ago, Oliver 79 said:

Thanks. 

I suppose if you put a couple of motors in the under carriage they might fit. But then where to put the battery box?

Personally I prefer the challenge of only using one motor and figuring out the gearbox. 

I had that approach before, but now I'm in the faze of transforming most of my models to RC...

BB can always be set in undercarriage but then cables could cause a headache.

Of course not every MOC (in every scale) can be transformed to RC.

[Oliver 79]

7 minutes ago, Samolot said:

A cool machine pretty well reproduced mechanics. But it looks a bit unfinished. However, I would try with lime colour. Now there are enough panels available to build this model. It seems to me that outriggers could work faster.  I would add a pair of panels 5 and 6 on the crane arm. It is very close to the great MOC

Thanks for your comments. I don't have any lime so I had to go with yellow. I also tried adding more panels to the arm but the extra weight ment it was too heavy for the actuator to lift. If I changed the gearing ratio it might work but I couldn't find any space inside to do that. 

The outriggers are geared through a worm gear hence the slow speed. I'd still say they're faster than the 42009 though 

[1gor]

23 minutes ago, Oliver 79 said:

 

The outriggers are geared through a worm gear hence the slow speed. I'd still say they're faster than the 42009 though 

...and much much faster that one's from 42082 set ...

[GerritvdG]

Nice to create this very specialised machine, you should contact Sennebogen, I’m sure they want to buy it for display!

Also thanks for the honest description of the creation proces and the MOC.

[Oliver 79]

3 hours ago, GerritvdG said:

Nice to create this very specialised machine, you should contact Sennebogen, I’m sure they want to buy it for display!

Also thanks for the honest description of the creation proces and the MOC.

Thank you. I'd be delighted if Sennebogen wanted to buy it. 

I once made a Huddig backhoe and they contacted me asking to buy it. They didn't in the end as my asking price was too high! 

[Jundis]

Great MOC! Form and function perfectly combined :-)

I loved that you gave insights in your building process and also mentioned problems. This truly highlights that you keep working and perfecting your building technique ;-)

19 hours ago, Oliver 79 said:

The upper carriage is also a bit wobbly and I would have liked to build some kind of 'track' for it to turn on.

I got the same problem on a MOC I am currently working on right now. The turntable is a tad too little for these machines, but solution with the big tables in the 42082 and 42100 are just to big here.

7 hours ago, Oliver 79 said:

If I changed the gearing ratio it might work but I couldn't find any space inside to do that.

As the arms are quite fast, I would definitely do this.Would the tapered 11 x 5 panel work?

[doug72]

49 minutes ago, Jundis said:

 

I got the same problem on a MOC I am currently working on right now. The turntable is a tad too little for these machines, but solution with the big tables in the 42082 and 42100 are just to big here.

I used a 3D printed turntable ring by Efferman when I built a Mobile Material Handler in 2018
It makes the rotation much more stable.

Edited August 15, 2021 by Doug72

[Oliver 79]

3 hours ago, Jundis said:

 

As the arms are quite fast, I would definitely do this.Would the tapered 11 x 5 panel work?

  

Thanks @Jundis . I did try those panels. In fact I ordered some especially for it, but somehow I didn't like them. I might post a picture with them on for comparison.

3 hours ago, Doug72 said:

I used a 3D printed turntable ring by Efferman when I built a Mobile Material Handler in 2018
It makes the rotation much more stable.

This part would indeed work and would be very useful. But I just can't go over to the dark side!  (if only Lego would take note!)

Thanks for all the comments guys. 

 

Edited August 15, 2021 by Milan
Do not quote images from the same page.

[Gray Gear]

@Oliver 79 I don't think you know what "the dark side" is... 3D printing LEGO compatible bricks certainly isn't.

Buying other brands like Cobi or Cada make you a "gray jedi" at maximum, as no laws are broken and no designs are stolen. 

Only when you get to straight up LEGO copy sets or stolen MOC designs things are getting "dark", as you are really doing something "evil" 

 

Edited August 15, 2021 by Gray Gear

[Oliver 79]

Ha ha . thanks for the explanation. Shapeways here I come!

[doug72]

14 hours ago, Oliver 79 said:

Ha ha . thanks for the explanation. Shapeways here I come!

You will also need the roller parts that ride on the gear ring.

Here is image of the turntable unit mounted onto a subtractor track base.

Edited August 16, 2021 by Doug72