Doc_Brown Posted April 13, 2013 Posted April 13, 2013 Hi Everyone, This year I have started building with stud less design, having not built anything out of Lego for some 15 years. I have just finished my first 4x4 Rock Crawler and thought I would share it with everyone. The first model that actually works well! haha. It features a unique suspension system that allows the live axles to really flex (this probably has been done tho). The downside is the tow-balls pop out. Please check it out on YouTube. Any advice, comments are much appreciated. IMG_59282 by Doc_brown1, on Flickr Quote
DLuders Posted April 13, 2013 Posted April 13, 2013 Nice Lego Technic rock crawler! I'm guessing that you did not use any Differentials in the drivetrain, since your MOC was able to climb some STEEP rocks with those 3rd-party tires. I like how you used those 98341 "Ring 4 x 4 with 2 x 2 Hole and 4 Arrow Ends (Ninjago Spinner Crown)" parts as wheel covers -- they make the Rock Crawler look wicked! Do you have any other photos showing the details of your MOC? I tried glancing at the underside during the "Bloopers" part of your video to see the gearing.... Quote
legomuppet9 Posted April 13, 2013 Posted April 13, 2013 This is great work, well done The model looks like it performs very well, and I have no suggestions for it. Battery box is low 4 wheel steering Big wheels XL Motors reasonably low to the ground etc etc, you've built it by the book so to speak The photos and video are all professionally done too (better than mine ) One thing I would like though, every Technic builders favourite picture, one of the underside also some information on gearing? Quote
Zerobricks Posted April 13, 2013 Posted April 13, 2013 Really awesome looking and perofrming machine. My only complaint is the fact, the XL motors are too low? Quote
timslegos Posted April 13, 2013 Posted April 13, 2013 Wow the body looks great, especially with those tires. I would love to see more pictures. tim Quote
Doc_Brown Posted April 13, 2013 Author Posted April 13, 2013 (edited) Thank you all for the kind comments! Yes it does have differentials with limited slip. I will take some detailed pics tomorrow. yeah the motors are a little scratched now. :( Here are a few more pics. IMG_59312 by Doc_brown1, on Flickr IMG_59242 by Doc_brown1, on Flickr IMG_5935 by Doc_brown1, on Flickr Edited April 13, 2013 by Doc_Brown Quote
z3_2drive Posted April 13, 2013 Posted April 13, 2013 awesome, one of the best climbs I've seen-similar to ones by Marcelo Raus. Quote
Someonenamedjon Posted April 13, 2013 Posted April 13, 2013 Wow! I really like color and the looks of it, it also climbs REALLY well! I think the only thing you should change (IMO) is to make the suspension softer because it really shakes around a bit because the suspension is not soft enough. otherwise it is really good! Quote
z3_2drive Posted April 13, 2013 Posted April 13, 2013 On 4/13/2013 at 3:04 PM, Someonenamedjon said: Wow! I really like color and the looks of it, it also climbs REALLY well! I think the only thing you should change (IMO) is to make the suspension softer because it really shakes around a bit because the suspension is not soft enough. otherwise it is really good! It shakes because it is too soft-it sways. If he made it softer it would sway too much to one side and fall over, like at the end of the video. Quote
Someonenamedjon Posted April 13, 2013 Posted April 13, 2013 oh.. because i once made this one suspension with 8 7L beams and put a rubber band in the middle, i never really go to try it but i had a HUGE travel distance. Quote
Doc_Brown Posted April 13, 2013 Author Posted April 13, 2013 On 4/13/2013 at 3:08 PM, z3_2drive said: It shakes because it is too soft-it sways. If he made it softer it would sway too much to one side and fall over, like at the end of the video. Thanks for the nice comments! I think its a little too soft, because it tends to roll a bit now, if fact I use lego rubber bands to keep it upright! Quote
z3_2drive Posted April 13, 2013 Posted April 13, 2013 I like the placement of the receivers to look like a toolbox Quote
Doc_Brown Posted April 13, 2013 Author Posted April 13, 2013 On 4/13/2013 at 2:52 PM, z3_2drive said: awesome, one of the best climbs I've seen-similar to ones by Marcelo Raus. WOW, Thank you very much, he in fact inspired me a lot to build the rock crawler! Quote
Someonenamedjon Posted April 13, 2013 Posted April 13, 2013 On 4/13/2013 at 3:20 PM, z3_2drive said: I like the placement of the receivers to look like a toolbox I never even saw that! Quote
skylinedan Posted April 13, 2013 Posted April 13, 2013 That is a awesome crawler, Like David said. I like the 98341 pieces used for the wheels, the whole body is well done. Dan Quote
Lakop Posted April 13, 2013 Posted April 13, 2013 Excellent! just watched the video. The body we very well done with some good details. H Quote
AndyCW Posted April 13, 2013 Posted April 13, 2013 Welcome to the forum. Excellent intial entry. The suspension looks quite flexible. This must help out a lot with the open differentails. Really like the wheel caps and body. v/r Andy Quote
Doc_Brown Posted April 14, 2013 Author Posted April 14, 2013 On 4/13/2013 at 5:55 PM, AndyCW said: Welcome to the forum. Excellent intial entry. The suspension looks quite flexible. This must help out a lot with the open differentails. Really like the wheel caps and body. v/r Andy Thank you, I followed your link to extreme 4x4! love it! Quote
Doc_Brown Posted April 14, 2013 Author Posted April 14, 2013 As requested here are some detail pics I know you guys want. Also how do you post YouTube videos with a pic? I tried following the code as specified in "posting guildlines" On 4/13/2013 at 12:40 PM, legomuppet9 said: This is great work, well done The model looks like it performs very well, and I have no suggestions for it. Battery box is low 4 wheel steering Big wheels XL Motors reasonably low to the ground etc etc, you've built it by the book so to speak The photos and video are all professionally done too (better than mine ) One thing I would like though, every Technic builders favourite picture, one of the underside also some information on gearing? LOL, its certainly looking a bit tired after its adventures! IMG_5959 by Doc_brown1, on Flickr IMG_5962 by Doc_brown1, on Flickr Quote
AndyCW Posted April 14, 2013 Posted April 14, 2013 You are going to want to go to the new 8t gears in your hubs they do make a lot of difference. The track width on that beast is considerable. This factor is most likely contributing to the strained pieces we are seeing in the second picture. The geometry of this suspension is "interesting". Again, those wheel caps are awesome. To embed Youtube videos I just paste the link for the video into the post. I look at the preview post option before committing. Extreme 4x4's episode this weekend was about a 1900 footpound mud buggy on 54 inch tires. It will be EPIC!! Quote
Doc_Brown Posted April 14, 2013 Author Posted April 14, 2013 On 4/14/2013 at 3:00 AM, AndyCW said: You are going to want to go to the new 8t gears in your hubs they do make a lot of difference. The track width on that beast is considerable. This factor is most likely contributing to the strained pieces we are seeing in the second picture. The geometry of this suspension is "interesting". Again, those wheel caps are awesome. To embed Youtube videos I just paste the link for the video into the post. I look at the preview post option before committing. Extreme 4x4's episode this weekend was about a 1900 footpound mud buggy on 54 inch tires. It will be EPIC!! Thanks I really loved how the wheels turned out too! I don't know anything about these new 12T, is there a thread? I was going to reinforce the axle more, but realized that more valuable 1x11 beams would get scratched the heck out of. But it does look a bit sorry now! haha But it held together ok. Can't wait to watch Extreme 4x4's! Quote
AndyCW Posted April 14, 2013 Posted April 14, 2013 They just came out this year. Bricklink or Lego Customer Direct will have them. http://www.bricklink...5&itemID=114206 Bricklink http://www.eurobrick...th#entry1481990 Discussion on how they help in the reduction hubs. v/r Andy Quote
Doc_Brown Posted April 14, 2013 Author Posted April 14, 2013 On 4/14/2013 at 3:50 AM, AndyCW said: They just came out this year. Bricklink or Lego Customer Direct will have them. http://www.bricklink...5&itemID=114206 Bricklink http://www.eurobrick...th#entry1481990 Discussion on how they help in the reduction hubs. v/r Andy Sweet, thanks for that! Much appreciated. Quote
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