|
Re: Variable Speed Gearboxes?
Belt CVTs as found in a gator or 4-wheeler are all incredibly oversized for FRC use (10-15hp, vs our 0.5-1hp). In that size category, Gaged Engineering makes a popular aftermarket belt CVT for race applications. Look up SAE Baja for some innovative CVT designs at a college level. UofA and ETS have both run manually adjusted CVTs in the past.
About ten years back I'm pretty sure either 148 or 217 was running a CVT, but found it weighed ~5x a 2-speed system and was not giving a sufficient advantage to justify the weight. Fun project though, can anyone can find pictures?
EDIT: Search is your friend, check out this thread from 2008...
https://www.chiefdelphi.com/forums/s...ad.php?t=67281
EDIT2: And here's the whitepaper from 217's 2002 championship run with a *CCT*, slightly different concept. They're not the only ones who have done it, go do your own searches if you're interested in learning more 
https://www.chiefdelphi.com/media/papers/1361
__________________
Fun:
Mentor - Team 841 (2015 - ? )
Mentor - Team 4 (2013 - 2014)
Student - Team 192 (2009 - 2010)
Work:
SunPower Systems, Product Engineering - Utility Power Plants (2015 - ? )
BSci, Mechanical Engineering, UCLA (2010-2015)
Last edited by s-neff : Today at 03:30 PM.
Reason: Added link to old thread & whitepaper
|