Zerobricks Posted January 6, 2013 Posted January 6, 2013 So i spent my whol day today building this little monster only to find out that the lego chain is weak as and that the machine kept loosing tracks every meter... Oh well at least the tracks were a great idea! The tracks were done vith a combo of 2 chainlinks and one tread link. Thanks to the ball joint this machine was able to steer and swiwel some 25 degrees. No gear slips in here! Alsko note that all drive gears are motorized. Oh and the flexible bogies. Quote
Sicil Posted January 6, 2013 Posted January 6, 2013 Great start. I will be interesting to see the final version of this creation. Quote
Hopey Posted January 6, 2013 Posted January 6, 2013 No gear slips in here! Alsko note that all drive gears are motorized. Oh and the flexible bogies. Could that be the cause of the treads breaking? I'm far from an expert in this, but I think most, if not all tracked vehicles drive a single sprocket per track. Wouldn't having driven sprockets at both ends introduce extra tension whenever the suspension moves? Quote
Zerobricks Posted January 6, 2013 Author Posted January 6, 2013 Suspension moves only in the under part, the uppoer tracks part is always tendioned. Quote
timslegos Posted January 6, 2013 Posted January 6, 2013 The tracks are a great idea, although not every MOC is a success! tim Quote
jorgeopesi Posted January 6, 2013 Posted January 6, 2013 Rubber bands for tracks always are a great idea. Quote
Hopey Posted January 6, 2013 Posted January 6, 2013 Suspension moves only in the under part, the uppoer tracks part is always tendioned. Yes, that's kind of what I meant. If it's driving forward, the rear sprocket is doing all of the driving, and th front one is just introducing unneccesary tension. Maybe, I dunno. Quote
efferman Posted January 6, 2013 Posted January 6, 2013 Yes, that's kind of what I meant. If it's driving forward, the rear sprocket is doing all of the driving, and th front one is just introducing unneccesary tension. Maybe, I dunno. i dont think that this is a problem. i use the same idea at my excavator undercarriage and the driving resistance is very low. zblj, would the standard rubber tracks from lego would fit on your haegglund or would they too short? Quote
Zerobricks Posted January 6, 2013 Author Posted January 6, 2013 I think i already got a better idea... will keep you updated. Quote
skylinedan Posted January 7, 2013 Posted January 7, 2013 The older track n chain pieces are not very strong at all. I built Han's 8421XL over the summer with a even longer boom, didnt work so well. The chain is not strong enough for a longer boom so I scraped the idea, and moved on. Dan Quote
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