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Step 4Tube lifts
These simple tube lifts are one possible way of holding a tube the required distance from the surface plane. It is just made by welding the 1x1 angle iron back-to-back with another piece. They only need to be an inch or two long.
NOTE: Since this references the OD of the tube, you will need to make them for each size of tubing! The height of the lift will need to 34mm minus half of the tube diameter (assuming you're using a 68mm bottom bracket).
Clamp them together at the right height and give them a tack weld on each side. After in cools double-check that the height came out right. If one side is off, knock off the tack and bend it to the right height and tack it again. Since this doesn't need to hold any significant weight, the tacks are all you need to hold it together.
After you finish each piece, don't forget to label them with the tubing size you built it for!
However, this isn't the only way to align the tubes, as you'll see in the next few steps.
NOTE: Since this references the OD of the tube, you will need to make them for each size of tubing! The height of the lift will need to 34mm minus half of the tube diameter (assuming you're using a 68mm bottom bracket).
Clamp them together at the right height and give them a tack weld on each side. After in cools double-check that the height came out right. If one side is off, knock off the tack and bend it to the right height and tack it again. Since this doesn't need to hold any significant weight, the tacks are all you need to hold it together.
After you finish each piece, don't forget to label them with the tubing size you built it for!
However, this isn't the only way to align the tubes, as you'll see in the next few steps.
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