Step 11B: Adjust Chain Lengths - CHAIN OFF BOTTOM ONLY
So if you are here, you should:
- Your sprockets are pointing at 12 o’clock
- Your chains are not attached to either sprocket.
The process here is not too complicated.
- Place the left chain on the left sprocket as shown in the picture on the left.
- Click “Adjust Left Chain” while holding on to the left chain… you don’t want it to wrap all the way around the sprocket and get tangled up.
- The left sprocket will turn counter-clockwise and extend the chain to a determined length (suitable for connecting to the sled).
- When that’s done, place the right chain on the right sprocket in a mirror image of what’s shown in the picture of the left. Here’s a picture just to be crystal clear:
Yes, I took the picture and mirrored it.
- Press “Adjust Right Chain”. GRAB THE CHAIN BEING FED OUT AND GIVE IT TENSION SO IT DOESN’T WRAP AROUND THE RIGHT SPROCKET.
- When the right chain has stopped being fed out, connect the chains to your sled.
- Press “Move to Center” and hopefully if your measurements and estimate for rotational radius were close to what they should be, your sled will move close to the center.
- Press “Next”
Frequently asked questions about this step
My chains don’t reach the sled… whatsup? Most likely you have a 12-foot top beam (or at least you motor spacing is further apart than would be with a stock frame. You need to go to Settings->Advanced Settings and change Extend Chain Distance from the default of 1650 mm to something bigger. I think I used 2032 mm for 12-foot beam. If you have a 10-foot beam and they don’t reach, then your rotational radius or vertical measurement of motor height is probably wrong. Check those measurements and go back to correct.