Sariel Posted January 26, 2014 Posted January 26, 2014 More: http://sariel.pl/2014/01/ripsaw/It's just a dead simple thing I made to relax from more serious stuff. Nothing special, but the suspension system works nicely. Quote
MrNumbskull13 Posted January 26, 2014 Posted January 26, 2014 (edited) I had never seen a tracked vehicle drift until now! It's wild and ugly. Great work! Edited January 26, 2014 by MrNumbskull13 Quote
Doc_Brown Posted January 27, 2014 Posted January 27, 2014 Woah, looks cold there! How cold is it exactly? Interesting about the batteries slowing down, do you think for a larger MOC, it may be necessary to build deep inside the model to insulate them against the cold? Quote
Sariel Posted January 27, 2014 Author Posted January 27, 2014 It was -20 °C, the video shows that information. I don't think you can insulate batteries with Lego bricks, they don't exactly keep the cold out. Quote
Hrafn Posted January 27, 2014 Posted January 27, 2014 Woah, looks cold there! How cold is it exactly? Interesting about the batteries slowing down, do you think for a larger MOC, it may be necessary to build deep inside the model to insulate them against the cold? Off topic here, but this is apparently a real problem with full-size electric cars. I know someone with a Nissan Leaf, and winter temperatures (even in California!) noticeably reduce the car's range. Charging and discharging batteries involves chemical reactions, and all chemical reactions happen more slowly in lower ambient temperatures. If Nissan can't insulate their batteries enough to prevent this problem, I doubt it's possible in a Lego model. Quote
AndyCW Posted January 27, 2014 Posted January 27, 2014 We've had similar temperatures here. It makes it hard to summon up the motivation to go outside. v/r Andy Quote
Sariel Posted January 27, 2014 Author Posted January 27, 2014 As for the Lego models in cold weather, I hear the Eneloop rechargeable batteries do rather well. I was toying with the idea of strapping a chemical hand warmer to a RC unit, but I'm not sure it's safe - the warmer can supposedly reach even 50°C. Quote
whale2 Posted January 27, 2014 Posted January 27, 2014 And this is where real shock absorbers (capable to stop oscillations) would come handy :) Great model. Quote
Commander Smith Posted January 29, 2014 Posted January 29, 2014 Love it. I just got my 42006 chassis r/c'ed. Your ripsaw is an inspiration. Quote
Commander Smith Posted January 30, 2014 Posted January 30, 2014 It's fast, but does it have enough torque to get up and over obstacles? Quote
Sariel Posted January 30, 2014 Author Posted January 30, 2014 Small obstacles, sure, and it can take some larger ones when at full speed, thanks to momentum. Quote
allanp Posted January 30, 2014 Posted January 30, 2014 Would be great to see it filmed at a high frame rate! Quote
KirTech LAB Posted January 30, 2014 Posted January 30, 2014 Cool model! Will we see some ramp jumps? :) Quote
legomuppet9 Posted January 31, 2014 Posted January 31, 2014 Really nice model Sariel, nice work! Instructions? You don't need instructions for a simple model like this. Look at the pictures and videos and you'll figure the important stuff out. You could even make a better version, it's the beauty of Lego Technic Quote
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