vmln8r Posted August 21, 2011 Posted August 21, 2011 Basic instructions for the screwdrive are here.Built to take advantage of the once-in-lifetime snow we just had. Also entered in the Technic Challenge.It features two motors, which drive a pair of screws. It is designed to travel across soft surfaces, such as snow. It can move forward/backward, turn left/right (by varying the relative speeds of the screws), and side-to-side (by spinning the screws in the same direction). Quote
Phantom59 Posted August 21, 2011 Posted August 21, 2011 (edited) Good work I was wondering about how to do a screw drive in lego myself after watching it being used in an episode of Scrapheap Challenge (they used it to propel a boat) It is a very simple thing (after you see how someone else dose it). Do you think it would work on mud (That all we have in Melbourne (OZ) at the moment) Edited August 21, 2011 by Phantom59 Quote
sverre Posted August 21, 2011 Posted August 21, 2011 Great MOC! Never thought it would "drive" so well. Thanks for sharing. Quote
Jurgen Krooshoop Posted August 21, 2011 Posted August 21, 2011 Very cool idea and model, my compliments Quote
Zerobricks Posted August 21, 2011 Posted August 21, 2011 I am deeply impressed! Does it work in deeper snow too? you should make instructions in LDD, to sel them! If you want i can make LDD instructions Quote
timslegos Posted August 21, 2011 Posted August 21, 2011 Wow thats fantatstic and extremely original!! I will deffinitly try this idea when winter coems around my area again. tim Quote
vmln8r Posted August 22, 2011 Author Posted August 22, 2011 Wow, thanks everyone! Phantom59: I didn't try it on mud, so no idea. I do know that It doesn't work well on deeper snow (ie, it sinks). Larger diameter screws would help - perhaps these, or if you want to go crazy, even these, but both are so large that the thread (of the screw) would probably have to be made of multiple parts. Quote
roamingstop Posted August 22, 2011 Posted August 22, 2011 perhaps these, With pin with 1 stud With mini-fig spanner into the stud... Then this can hold the flexible pipes at a angle... Quote
freakwave Posted August 22, 2011 Posted August 22, 2011 Epic! This is great! superb playability in a small package! At first I was wondering, snow?!?! But then I saw NZ :-) I guess for deeper snow movement, the snow should be a bit "wet", not powderey as the area where it has contact is quite small and it would sink to deep I guess! Quote
Lasse D Posted August 22, 2011 Posted August 22, 2011 Awesome little toy you have made there. What happens when the snow is deep. Does it simply dig itself down? Quote
Sokratesz Posted August 22, 2011 Posted August 22, 2011 (edited) The song made me chuckle It looks hilarious when moving around! Edited August 22, 2011 by Sokratesz Quote
22kane Posted August 22, 2011 Posted August 22, 2011 That's actually pretty cool. The music was perfect for this thing. Very entertaining. Great Job! Quote
Aqualize Posted August 22, 2011 Posted August 22, 2011 On a side note, from reality. This is an old promotional video where a Fordson tractor was fitted with screws instead of wheels. http://www.youtube.com/watch?v=zBjlSJf4274 Quote
Dutch_EE Posted August 22, 2011 Posted August 22, 2011 Does it float ? If it does, it would make a brilliant boat. Quote
vmln8r Posted August 22, 2011 Author Posted August 22, 2011 (edited) With pin with 1 stud With mini-fig spanner into the stud... Then this can hold the flexible pipes at a angle... Yes, but the pipes have a circular, rather than flat cross-section, which would make 'pushing' against the snow difficult. The soft axles I've used are a bit less useless, but something like minifig spanners could only be attached at their endpoints... I guess for deeper snow movement, the snow should be a bit "wet", not powderey as the area where it has contact is quite small and it would sink to deep I guess! Exactly. Awesome little toy you have made there. What happens when the snow is deep. Does it simply dig itself down? Pretty much - here's a video in deep snow. Edited August 22, 2011 by VMLN8R Quote
grohl Posted August 22, 2011 Posted August 22, 2011 I am glad you made this idea working. We discussed it last year on the Czech forum and the guy who tried to build it gave up. Thank god you did not. Amazing model. Quote
roamingstop Posted August 24, 2011 Posted August 24, 2011 (edited) On a side note, from reality. This is an old promotional video where a Fordson tractor was fitted with screws instead of wheels. So what became of this concept - and why SnowMobiles?... perhaps cost and size? Edited August 24, 2011 by roamingstudio Quote
yoraish Posted August 24, 2011 Posted August 24, 2011 It works and looks great! It's funny that when you have snow we have 45℃ Quote
Aqualize Posted August 24, 2011 Posted August 24, 2011 So what became of this concept - and why SnowMobiles?... perhaps cost and size? I don't know why it isn't "standard" today. I watched a youtube video with a RC "car" with this screws. Funny thing with it is that it worked equally well on water as on other surfaces. Quote
vmln8r Posted August 25, 2011 Author Posted August 25, 2011 So what became of this concept - and why SnowMobiles?... perhaps cost and size? They also tend to rip up the surface below them to move around - take a look at the video below: Quote
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