dhc6twinotter

I noticed that at other events as well. It's such a shame. I think it's one of the best LEGO themes, and I really wish there were more Technic builders in the USA. I'm the only Technic builder in our LUG, and I always look forward to meeting the handful of other Technic builders that usually show up at the conventions. I think all of us US Technic builders should get together and make a trip to LEGOWorld or whatever in Europe.

Wow....very nice! He did a great job building the body out of studless parts.

I wish I had more space! Can't figure out where to put my IR receivers. Original plan was to put them in the base of the crane, but I think it would stick out too far. I could maybe put them behind the cab, but that might not look very good either. Actually, I just had another idea too. We'll see. After building my tractor and backhoe, I was excited about finally starting a moc that had some space to work with. I sure was wrong....ha. Maybe my next moc.

You are correct. The 8868 Airtech Claw Rig uses them as air lines as well. Some of us have built mocs using those ridged tubes as air lines.

I like that 1x5 thin litftarm with 3 cross holes. That is a part I wish LEGO would produce. I'd like to see a 3x5 rectangle panel with a curve to match that of the larger triangle panels.

I won't be using a pneumatic slew mechanism. Getting it to work with the synchronized cab rotation really isn't the problem. The problem would be my lack of space. For a pneumatic slew, I would have to add another pneumatic valve, pneumatic cylinders, and the associated clutch and gearing. I don't have the space, and I would prefer the more precise geared system over the coolness factor of pneumatics anyways (sorry allanp). Paul, not sure if you remember our conversation about how exact we are in our builds, but ever since that conversation, I have been making a conscious effort to make sure all my bushings are placed with the slots facing the same way. I also try to align them with the slots on axle connectors too. Just thought I'd mention I remembered that conversation. Maybe! My backhoe was much more complicated and used a ton more gears though. The downside to that project was that all the mechanical stuff was buried in the chassis, and nobody could really see what was going on. This project probably has half the parts, and most of the mechanical stuff will be easily seen. I'll take some pictures of my backhoe when I decide to disassemble it so you all can get a look at the internal workings.

There are several different load bunk options available. The bunk in the picture is not the one I'll be building. I'm not sure what is circled in your picture, but those load bunks are a solid piece at the bottom. In the model pictured, the stakes have small hydraulic cylinders that swing them in a horizontal arc to give a wider load space. There is also an option that has 4 smaller bunks with hydraulic telescopic stakes that offer varying load widths. The third option has 4 bunks with non-adjustable stakes. This is the simplest design, and the design I will be using. Thanks! I hope all the functions work well too. I'm not really a fan of the jerky movements that pneumatics usually have, but we'll see how bad it is. I'm not completely satisfied with the boom slew/cab rotate synchronization, and I think it may need a bit more work. I think I want to build the boom first, then test everything with the weight of the boom on the turntable. It would make a difference, but I'm not sure if it would be better or worse. Here is a picture of the boom slew mechanism on the real model:

OK, thanks. I just edited my previous post as you were posting yours. I've seen this on backhoes and forklifts before, but wasn't sure what it was called. I even drove a forklift once that had it.

What is "sideshift"? Google didn't turn up anything, other than sideshifts on forklifts. [EDIT]: Ok, I did find some machines with sideshifts, mostly backhoes. I haven't seen any forwarders with it, and none of my John Deere research has mentioned it. I don't think this has sideshift, but I may have overlooked something.

This is looking amazing! I wish I had your photography skills too.

Thanks guys! Weight is a concern, but I think I'll be ok. It isn't as heavy as my JCB backhoe, but I still have 5 m-motors and an XL-motor to add. The chassis is long, but not very wide or tall. This is my 4th moc since I've gotten back into Technic, so I'm still learning what the weight limits are, etc. Yes, it will be green. There isn't too much green really though; just the cab, hood, and the little box thing behind the cab. It will be a challenge, and I've been ordering random green parts in my last few bricklink orders. it gives me a whole new respect for that completely green John Deere tractor somebody built a while ago. My biggest concern is the pneumatics. I have 4 compressors in the chassis, but I hope that will be enough to lift my boom. The boom will have 2 m motors, plus the telescopic jib. I haven't started on the boom yet, and I'm not familiar enough with pneumatics to know what their load limits are. I think I should be fine, but this project still has a chance of being a failure. I need to order more 16t gears. I still have my backhoe built, and between these two models, I've used almost all of my 16t and 16t clutch gears. I also need two more tires from 8297 if I plan on keeping both mocs built for the next few shows. The backhoe will probably be taken apart in the next few months though, but that is kinda dependent on what happens with my job contract (if I start a new job search, lego time will suffer).

Hey all, I thought I would post up my project that I've been working on for the past few months. I'm happy enough with my progress, and I feel like I have built enough to warrant a WIP thread. This moc is based on the John Deere 1910e Forwarder: Planned functions: Drive Steer Gearbox selector Boom Slew Boom up/down Jib up/down Jib extention Grapple open/close Grapple rotate Front dozer blade Front retractable ladder Rotating cab (synchronized with boom slew and gearbox selector--more on that below) Fake I6 engine with fan A few LED lights On to the photos! The next picture shows part of the chassis up to this point. At this point, I still have 2 m motors and a XL motor to add to the back of the chassis. Below the engine on the front, I still have to add a pressure regulator, m motor, and pneumatic valve. The chassis still needs to have most of the bracing put in place, and I still have some work to do on the 6 output gearbox. The turntables on the sides will be part of the bogie housing and will house the planetary gear sets. You can also see the turntables for the boom and cab. Sorry about the horrible picture: The 6 output gearbox and pneumatic valves. There are clutch gears further back (out of the picture) that keep the motors from stalling once the valves hit their limits. The left side of the gearbox controls 2 pneumatic valves, the right side of the gearbox controls 2 more pneumatic valves, and the center part of the gearbox controls the steering and boom slew. The newer John Deere forwarders have a cab that rotates with the boom slew. This was a key feature I wanted in this build, but I also wanted the cab to rotate when my gearbox is switched between drive mode and logging mode. The differential lets me combine inputs from the boom slew motor and the gearbox switch motor. The output then goes down and through the center joint and to the cab rotation. When the boom slews, the cab rotates at a slightly lower speed, allowing the operator to always look at where the grapple is, without turning his/her neck. When I switch the gearbox mode, the cab swings 180 degrees from forward facing (drive mode) to rear facing (logging mode). Getting the gear ratios just right for this was very challenging, and to be honest, I almost abandoned the project. I think I have it figured out, but we'll see. Below is one of the four bogie housings. Each housing is pendular, has portal hubs, and has a planetary gear set. I used a diagram from the real 1910e bogie housing as a reference. The gear ratios are pretty close, with the exception of the center drive gear. I've got a long ways yet to go on this project. I've got a couple other project I'm working on as well, so progress will probably be a bit slow. Thanks, Daniel

Looks good! I like the compact size of it. There are different solutions for your steering. You could use a worm gear on the turntable, you could place a steering rack between this wheel module and another one directly across form it, you could use a LA to steer, or any number of other ideas. I think one problem you will have is the lack of a differential. As the wheel module steers, one wheel will want to rotate forward, and the other backward. Placing a differential in a wheel module at this scale would be difficult, so you may be better off just having one wheel driven. Looks like a fun project!

An EB Technic competition would be fantastic! I agree that we need more than 18 days to build a moc, and I think a part count limit would be beneficial.

8466 is an amazing set and a nice set to put on the shelf. If you are wanting to use the parts from 8466 for mocs, then about the only parts worth using are the wheels, springs, pistons, and a handful of black parts. All the grey parts are the old grey color and are outdated. If you want a set to buy for parts, I vote for 8110. The wheels on 8466 are really nice though, and if you think you would use them enough, then it may be worth buying 8466.

Welcome! You have a great project going here! Nice work!

I really like this set, and it's a great value for the money. Interesting build, plus you get the mini-LAs. I'll buy a second one for parts, if I find one on sale.

I don't think you'd be able to get a 3L axle with stud in between a wishbone part like that. But, if you could, the parts would fit together fine, but I don't think it would be the strongest solution. IMHO, you'd be better off using a 4L axle with stop there and let it stick out by 1/2 stud on the side of the purple part (or double up the purple part).

Oh wow....this is looking really good! Nice job on those outriggers.

I've always really liked this set, and it's one that I wish I had purchased long ago. I'd buy it just for all the flex system parts. If only LEGO would re-introduce the flex system...

Somebody said something about a tractor for 2H. So far though, the assortment seems less than 2011, so hopefully we'll see a few more sets. BTW, I guess my hunch about seeing a backhoe flagship model was wrong. Maybe in a few years.

This is basically how I have my stuff organized: 4 drawers with pins, axles, axle connectors, bushings, 1x2 beams, 1x3 beams, 3x3 T beams, 1/2 wide beams, u-joints, and other small random parts 1 drawer with yellow beams 1 drawer with black beams 1 drawer with light bley and dark bley beams 1 drawer with red beams and other random colors 1 drawer with gears 1 drawer with pneumatic parts, hoses, and ridged hoses 2 drawers with wheels and tires 1 drawer with red panels 1 drawer with panels in other colors 1 drawer with PF parts 1 drawer with bulk items I've purchased off of bricklink, still bagged 4 drawers full of random parts that still need to be sorted 1 shoe box full of wheels 2 shoe boxes full of random parts that needs to be sorted 1 medium sized tote that still needs to be sorted (mostly old studed parts) A couple bags full of parts I ordered during out last LUGBulk order. When I take apart my backhoe, I'll have to find someplace to put all the parts. Anyways, that's how I've got my stuff organized for the time being.

Welcome to the forum! Go back a few steps and make sure the black pin in the middle of the T piece is in the correct position. If you put the pin in the top hole of the T piece instead of the middle, it will make all those black pieces behind the motors lower by 1 stud. See if that fixes it for you.

I tried painting some 6x6 dishes in yellow for the front wheels on my backhoe, but it didn't work very well. I found out I'm horrible at painting. I ended up tossing out the dishes and came up with a solution using yellow 8x8 dishes.

For some reason, I didn't realize this model had a rear engine layout. Very cool. Love the rear end design too....it reminds me of an Acura NSX.