efferman

unfortunately not, because i folow your idea in extreme this feels solid, but the extension of the extrakting section will be the next problem

Milan, something like this? Balrog, i have beams in longitudal direction on the upper side. unfortunately the gearrack for boom extension makes it hard to connect both sides together.

some of you have maybe seen my video with the of the xl actuator and how the boom is bending under the load. here are two pictures do you have any ideas to prevent this.

The XL motor is going 1 to 1 into the actuator and inside of the actuator 4 to 1 If you order it today it will work, but please wait till i have the new clutch and the new pistonrod to test it. PROlego for me the actuator is expensive too btw, this power is a big challenge in construction, the boom is absolutely to weak and the actual uppercarriage is bending under the load too

thanks guys Balrog, to be exact i have to say this is the second physical iteration. the first one was very rudimentary actuator with only a pistonrod, the treaded pipe and a very simple holder. this in the video was the version 1.0 with a to wobbly pistonrod and a to loose clutch. i have made a modification set to test the version 1.1 which is actually online on shapeways. When the new clutch is to tight, this will be changed in 1.2. but first a small vid about the internals of v1.0

http://www.brickshelf.com/cgi-bin/gallery.cgi?f=442099 these are all pictures i have

-ackermann between axles is no problem but with full ackerman i have no idea

here it is, but for this it needs a xl motor edit i think this is enough power

The actuator has arrived and it works nearly out of the box. only removing of some dust was neccessary to work like this. actually there is some dust remaining in the tread so it should work proper after more cleaning

a test boom for the extra large actuator. i hope the geometry fits to it 100_1317 by efferman, on Flickr 100_1318 by efferman, on Flickr

first step on the gooseneck lowloader x73 tieflader mit d11 by efferman, on Flickr the trailer wil lhave a detachable gooseneck. x73 tieflader angekuppelt by efferman, on Flickr x73 tiflader offen by efferman, on Flickr

Someone who has ordered the 8/12 portal hub, has contacted me and showed me this picture Portal hub 8/12 in black detail by efferman, on Flickr it was printed in black detail, a resin material at shapeways. so i recommend dont use this material at technical parts

the risk that it doesnt fit is very low. 1.9 inch tires does have a smaller inner diameter than the unimog tires so the have a very good contact to the rim.

There is not much difference between yours and my linear valve new perpendicular connectors maybe a alternative for the rare 61905 actuator holder And a small update on the Heavy duty turntable. the update has saved nearly a quarter of the material and makes the mounting more easy, because there are less possibilitys for conflicts

iam not sure if i understand whats your idea

Yes, it is the same gear setup like in my planet rims The stroke depends on the threads in the spinning pipe, actually there are 60 rotations from full in to full out. To make shorter or longer actuators is no problem if someone needs them. for shorter actuators standard cross axles can be used The precision of printing is theoretical no problem, practical the nylon shrinks a bit during cool down process. i have to remind to this problem during construction, but crossholes are the only gambling with these shrinks. The thrust bearing is possibly needed between the planetary gear carrier and the stator gear. Tests will show if it is neccessary. Yes, the planetary gearbox works like described. The ring gear has 24 bumps on its outer ring and the casing hast 48 opposites. Between both is a ltiitle bit space for mounting and the clutch function. Theoretical this works like the clutch in the large lego actuators, practical it has to be tested. Look at the picture to see how the planet gear carrier is connected to the spinning pipe. This problem do have long hydraulik actuators to. They use some guidings to prevent this, in my actuators this should make the 2 stud long thread on the pistion rod bottom. i have more fear that the piston rod bends under load. the piston rod hole in the case is 16,5mm , the 2x2 round bricks a little bit under 16mm in diameter, so ther is not much guidance at the end of stroke. me too

second revision of the extra large actuator It has a moving range of 18 studs, an internal planetary 4 to 1 gearbox with integrated clutch. to save material i have made a crossaxle pistonrod. round 2x2 bricks will complete it. Unfortunately this solution allows only to push and not to pull. Fortunately mobile cranes dont need the pull function i have ordered it and it will me arrive in roundabout 10 days.

42039 Yes it seems 42034 i think it is a panel number 1 and 2

i see the same liftarm on the other side too

Thanks for the pictures. look at crane of the arctic vehicle, does it have a 3l liftarm without crossholes? I think there is one at the knuckle of the crane (Edit: oops, iam dumb! it is a simple thick 3 hole liftarm and so it is a simple frictionless 3l pin)

small update on the payload LXF white buddys by efferman, on Flickr

during converting the D11 in standard ldd i had some colour problems so there was a colourchange neccessary. Some details are added too White dozer by efferman, on Flickr white ripper by efferman, on Flickr hope you like it in white edit: arranged in groups for transport groups by efferman, on Flickr

i have made a small grouphoto with the payload. big buddies by efferman, on Flickr

Thank you very much. I hope i can finish the instruction for this in the next days

with Zbljs technique and many patience , now i have two closed circles of tracks closed tracks by efferman, on Flickr