Doc_Brown Posted May 30, 2013 Hi Everyone! This thread will contain all my WIP with regular updates, and finished projects will have their own thread, with high quality pics, videos and maybe files. I will be using this to document everything I do with Lego Technic! Gone a bit mad To start with, here is my current problem!!!! My Patria 8x8 AMV ....broke I was just testing on level ground, then a small object and crack! :cry_sad: I will just swap them over from left to right, but still very puzzling after not even going off-road! Is this a known flaw? Anyone else experienced simpler breakage? My other current project is a 32 Ford Hot Rod. Here is a quick video of performance. It features live axles front and rear and chassis modeled of the real thing. 2XL motors power and 1 servo for steering. More pics are coming soon, so stay tuned! Thanks for looking! Share this post Link to post Share on other sites
piterx Posted May 30, 2013 i didnt understand what exactly you broke in the Patria :D anyway the hotrod chassis seems very cool and performant Share this post Link to post Share on other sites
Doc_Brown Posted May 30, 2013 i didnt understand what exactly you broke in the Patria :D anyway the hotrod chassis seems very cool and performant Thanks man! Bit hard to see, so I took another pic. The tow ball part snapped off. Share this post Link to post Share on other sites
Doc_Brown Posted May 30, 2013 HAHAHAHAHAHAAHAHAHAAAAAAHAHAAAAAAAAAAHHHHAAA I laughed so loud! Cheers Share this post Link to post Share on other sites
SteveNesta Posted May 30, 2013 Excellent news. Set thread to follow :-) Share this post Link to post Share on other sites
legomuppet9 Posted May 30, 2013 Awesome work so far good job Share this post Link to post Share on other sites
aqaz Posted May 30, 2013 Really good.... Was that a new part for your Patria, or had it been 'previously cherished' in another build? Share this post Link to post Share on other sites
Doc_Brown Posted May 30, 2013 Excellent news. Set thread to follow :-) Awesome work so far good job Thank you guys! Really good.... Was that a new part for your Patria, or had it been 'previously cherished' in another build? Thanks. It was in fact brand new, perhaps it was just a dud with a minor defect in molding, and after some stress broke. I will swap it over to the right side and swap that back to the left, so all good for now, just hope more don't break! Share this post Link to post Share on other sites
Balrog Posted May 30, 2013 Wow, your hotrod seems to be pretty fast until now. Share this post Link to post Share on other sites
GDomino Posted May 30, 2013 Looking good so far Doc! I look forward to seeing how your projects progress. Share this post Link to post Share on other sites
Doc_Brown Posted May 30, 2013 Wow, your hotrod seems to be pretty fast until now. Thanks guys! It was the Patria that broke, hehe. This is what inspired the Hot rod. So pretty. Share this post Link to post Share on other sites
750ACE Posted May 30, 2013 Why not just create a blogspot for all of your WIP's and post final finished mocs here on EB. Sifting through pages and pages of posts on a single thread is very tedious. Share this post Link to post Share on other sites
Someonenamedjon Posted May 30, 2013 Why not just create a blogspot for all of your WIP's and post final finished mocs here on EB. Sifting through pages and pages of posts on a single thread is very tedious. So many other people have them...Why do you complain about this one? Just go to the first unread post... Share this post Link to post Share on other sites
legomuppet9 Posted May 30, 2013 Don't look at thiscthen. Personally I prefer it like this Doc I agree, that hotrod is lovely... Share this post Link to post Share on other sites
aqaz Posted May 31, 2013 Sorry, bit late with this... I agree with your conclusion, probably some contaminant in the ABS, just unfortunate it was at a stress point. I expect you already know... But under stress (beyond mechanical strength of cross section) it would be expected for ABS to deform rather than break (you would have noticed this), however, after prolonged undue stresses the material will fail. This would be highly unlikely in this application. I know.... I have bored you now.... I'll stop Share this post Link to post Share on other sites
Doc_Brown Posted May 31, 2013 So many other people have them...Why do you complain about this one? Just go to the first unread post... Don't look at thiscthen. Personally I prefer it like this Doc I agree, that hotrod is lovely... Thanks guys! Sorry, bit late with this... I agree with your conclusion, probably some contaminant in the ABS, just unfortunate it was at a stress point. I expect you already know... But under stress (beyond mechanical strength of cross section) it would be expected for ABS to deform rather than break (you would have noticed this), however, after prolonged undue stresses the material will fail. This would be highly unlikely in this application. I know.... I have bored you now.... I'll stop No not at all! Thank you for your input. Share this post Link to post Share on other sites
Doc_Brown Posted June 2, 2013 (edited) Quick update. Working on a firing system for the Main gun on the Patria. I hope the arrows explain whats happening, haha. This is a very rough experiment, trying to get the right movement. Basically with the motor spinning, there is a small pause between "firing" This motion is to simulate the turrets recoil. This is the first time I'v tried such mechanics, and I'n really enjoying it! If anyone seems something obvious I'm doing wrong please say so! or any advice would be greatly appreciated. Cheers. Edited June 2, 2013 by Doc_Brown Share this post Link to post Share on other sites
SteveNesta Posted June 2, 2013 Interesting. What's going to be fired? What kind of power are you looking for? I can't really figure out the annotations? Watching with interest. :-) Share this post Link to post Share on other sites
Doc_Brown Posted June 2, 2013 Thanks! Here is a video to show the movement, you have to look very carefully at the recoil cos of bad quality. But thats the motion im after. :D Share this post Link to post Share on other sites
SteveNesta Posted June 2, 2013 (edited) So you are making a fake gun, but want a good recoil action? How about the action that I used on the machine gun, but with very low gearing and a pressure cylinder to damp the motion? Edited June 2, 2013 by SteveNesta Share this post Link to post Share on other sites
Doc_Brown Posted June 3, 2013 thank you for the offer but I do like to work out my own things! No disrespect hehehe Share this post Link to post Share on other sites
Doc_Brown Posted June 4, 2013 Just made this cool Magic cube! Read this for more info. http://www.eurobrick...hl=+magic +cube Share this post Link to post Share on other sites
piterx Posted June 4, 2013 now i see what it does :D looks like an interesting anti-stress Share this post Link to post Share on other sites
Someonenamedjon Posted June 4, 2013 I'm going to be building the nano one! It is the perfect size for your pocket! Share this post Link to post Share on other sites
