Quote:
Originally Posted by pacoliketaco
so, i have been trying to design a lighter chassis than this years robot (at ~60 lbs) and i came up with this:
by my calculations, it will move at 14.82 ft/sec high gear and 5.79 ft/sec low gear. i have also figured the weight to at at around 45 lbs.
and just for future reference, 1x2 8020 weighs about .98 lbs/ft, and 1x2x.125 aluminum weighs about .88 lbs/ft. not much of a difference when the strength is taken into account. |
Great Job! The level of detail in the CAD is amazing. How'd you make the chains?
This is VERY similar to my team's last two drive trains. This kind of system is very adjustable and easy to build. It's worked great for us these last two years.
2007:
2008:
Some things to consider:
5.79 fps is probably a little two slow. We ran low gear at about his speed this year and it was useless. The slowest I would go is 7 fps.
You could save more weight with #25 chain. This system makes chain tensioning a breeze, and you could easily implement #25. We used #25 this year and never lost a chain.
I'm curious as to why you put the axles on the center line of the extrusion. It would be a lot easier to put the pillow blocks on the top or bottom. You could save a lot of machining, and replace the 1020 with 1010.
Altogether great work though. Are you gonna build a prototype?