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M2 ASSEMBLY GUIDE
M2 ASSEMBLY PART 7: ATTACH M2 TO FRAME
ROLLER BEARING CARRIAGE
ROLLER BEARING CARRIAGE
1. Hold M2 sled against the wasteboard near the right chain.
Hold it against the frame with your body weight or have a friend
help by holding it for you.
2. Take the loose end of one chain and thread through hole in
the roller bearing carriage built in Part 1. Insert A1 cotter pin to
into second to last chain link to attach.
3. Move M2 to center of Wasteboard and have a friend pull the tension on the opposite chain to a length of 20” or less (from the
nail to the spring). You can pull the chain away from the spring and lock onto the top of the motor for the tension to hold, but
beware of the tension and snap! When you have enough slack in the chain, thread through the opposite Carriage Mount and attach
with another A1 cotter pin.
Drew’s Note:
We recommend wearing safety goggles and having a friend help mount the sled to the frame. The
chain can slip off the sprockets, causing the spring to snap and hurt people, pets, and surroundings. It’s also
important to insert the cotter pin into the second to last link, for extra safety of the chain attachment, as shown
below.
Drew’s Note:
Let go of the
sled and it should rest against
plywood or MDF. Your M2 is ready
to calibrate! (Also, don’t forget to
attach your bricks, if you waited
until it was mounted).
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Last Updated 11.09.2020
Version 1.14
