[techtiger1]

A couple things I saw on this thread I want to comment on the distance the wheel should be spaced down is not a set distance it depends on what kind of wheels and traction material you are using. For instance wedge top tends to compress, so 1/8 may not be enough if you are using wedge top material in particular. Also the thoughts on 25 vs. 35 chain, this all depends on what kind of fabrication/machining facilities you have. I will now tell you why this matters. #25 chain requires more precise alignment then #35 because of the size difference. However #25 is much lighter and will save you weight to do other things with. #25 chain is plenty strong we used it in the drive last year for the first time and only broke it once and that was in a pushing match against 233 at a off season in Tampa and 233 broke there #25 chain as well. Just my thoughts on how to make an effective 6 wd base. I have been involved in two 6wd designs on 1251's 06 and 07 robots both won regional events these comments are things I learned on both those robots.