Quote:
Originally Posted by InfernoX14
I wouldn't really consider the kitbot frame rock solid strong...
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Our team did a stress analysis a while back and determined that the kitbot was actually quite strong. I think its infamous reputation comes from teams cutting notches in it and weakening its structure. Left in its original state it is very strong.
Quote:
Originally Posted by M. Krass
If you don't mind answering a few questions:
-- From what are the bearing blocks made? They look like they're 1/4" thick, overall dimensions of 2.25 x 1.5. McMaster-Carr, nor onlinemetals.com, seem to carry stock of these or similar dimension. Are they custom made?
-- What machining work was done to the 1x2 extrusion to accomodate the axles?
-- Where'd you find 1/2" bore, keyed sprockets for #25 chain?  What were lead times and cost like? |
No problem
--Wow that’s the exact dimensions
! We searched and searched for channel stock that came in these dimensions, but it didn't exist
. So we just purchased a 2.25 x 1.5 block from a local metal supplier and machined a 1 x 2 slot in it. It took forever on our little mill, but our sponsor will probably be able to get it done in an afternoon.
--We just cut two 0.75" long slots on either end with a 0.75" end-mill. The center slot is vertical, allowing the center wheel to be raised or lowered an 1/8 of an inch.
--McMaster Carr. We had to machine them thinner and broach them, but it wasn't too hard. Just like everything else they carry the sprockets were cheap and arrived soon