gvo25 Posted February 20, 2015 Posted February 20, 2015 (edited) Hello All, As I am a big fan of cranes in general, and especially crawler cranes, I decided to make my MOC of a Crawler crane. With the most anticipated introduction of the 42042, which I definitely will buy, I decided to put the pictures of my first MOC online. It's my first build since i don't know how many years. The Crawler Crane is an ultimate build with full PF functions. Independent track driving Slewing Boom hoist Runner (winch is installed but the wire is not rigged in these photos) Main hoist I've been working at it since a few months and since the original build I already modified a lot of things but the crane is still far from completion. I'm always open for suggestions Another photo Edited February 20, 2015 by gvo25 Quote
Cumulonimbus Posted February 20, 2015 Posted February 20, 2015 That is a goodlooking crawler crane, nice work. You mentioned it is fully PF, but I'm curious about the controls. Is it RC or is there a "gearbox" inside? Quote
gvo25 Posted February 20, 2015 Author Posted February 20, 2015 It doesn't have a gearbox it's full RC, I'll upload more photo's when I can Quote
KirTech LAB Posted February 20, 2015 Posted February 20, 2015 Huge model! It's very interesting to see it in action! Quote
jorgeopesi Posted February 20, 2015 Posted February 20, 2015 Nice crane it looks small for a lot of functions, well done. Quote
gvo25 Posted February 20, 2015 Author Posted February 20, 2015 (edited) Here's the video: Driving and slewing was done with the IR speed controller, hoisting and lowering the boom is done by a normal IR controller Edited February 20, 2015 by gvo25 Quote
gvo25 Posted February 21, 2015 Author Posted February 21, 2015 I'm finally able to post more photos, after some tutorials , here they are... More photos will follow when I Installed the runner wire, I'm alo designing a second boom to create areally ultimate crawler crane Quote
jeanska79 Posted February 22, 2015 Posted February 22, 2015 Really a great model! May I ask you what thew big shockABS are for? And how can you command the 2 motor for the 2 track and the motor for slewing with only one ir receiver? Quote
gvo25 Posted February 22, 2015 Author Posted February 22, 2015 There are actually 3 IR Receivers, 2 in the upper body and 1 in the drive train. The IR receiver in the drive train is situated just after and beneath the rotation disk. I saw in photos of liebherr cranes that those cranes have struts to prevent the boom raising at a too high angle, or even topping over when raised too far. I copied that with those shocks. Also it keeps tension on the string when lowering the boom from an elevated position, when the relative weight of the boom is low. Once the boom is below a certain angle the relative weight increases thus tensioning the wire by itself. Quote
jeanska79 Posted February 22, 2015 Posted February 22, 2015 Really great solution and a great MOC! Like a preview fullyRC of the new 42042... It's a pity you didn't take part in TC6 with something like this. Keep going, U are really a good builder! Quote
gvo25 Posted February 27, 2015 Author Posted February 27, 2015 Hello all, Here are some pictures of an addition to my crawler crane. I've added a second boom to have more outreach and to increase the total height of the crane. Due to weight restrictions, I had to take out a section of the main boom, and the wire has been reduced from 4 to only 2 falls. The secondary wire is now used to adjust the height of the second boom. Quote
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