how to build a cargo bike

Step 2 Frame construction

the next thing was to construct the front frame. i thought that bigger would be better so it became 100 by 100 cm. this was not a good idea, but more about this later. what you see in the pic is the frame made of steel tubes (welded) and the rear part of the old bike.

Comments

[Ravage36]

What kind of welding equipment do you use?

[carkat]

inert-gas welding

[anjenaire]

Or you could use a C-channel design and bolt together. Look for Superstrut or Unistrut at your local big box home supplier in the electrical section. A little hacksaw action and some bolts and connectors and you'd be good to go. Probably a bit heavier than the tubing shown above but definitely lighter than black iron pipe or even galvanized.

[mista.v]

If we haven't got welding equipment/skills, could we just use threaded (or soldered) steel piping for this?

[gjmoore75]

You could - but threaded pipe that would support the sorts of loads required would be much heavier than welded RHS.

[carkat]

a friend of mine, who is a professional in working with steel once suggested to simply screw everything together, so i guess it should be possible. i just used the bike as an excuse to buy me a welding equipment ;-) maybe it's just a matter of thinking about the best possible way to bolt the pieces together

[mista.v]

Yeah that would work too. thanks.