Archive for the ‘Fixture’ Category.

Cycle Truck Finished

This facade reminded me a photo that David Wilson has of his Borracho cargo bike in the doorway of a brick building in Georgetown

I did some finish work on the Cycle Truck and sent it off to be powder coated a couple of weeks ago. It was coated by Seattle Powder Coat in Ballard. They did a nice job at a reasonable price and with a very quick turnaround. The paint is red to pay homage to the donor frame and fork that were used to build the new one (both were also red). The rack is a silver/grey. I modifed this pizza delivery bag (thanks to James Black for telling me where to get one cheaply) to fit onto the rack. The bag is 20×20x12 inches and fits perfectly.

In this photo I’m carrying a roughly 50lb load of bird seed, cat food, and random bits from the hardware store. I think this bike works well for bulky loads (better than a porteur) and okay for heavy loads (the closer they are place to the headtube the better). I don’t think it does great for loads which are both large and heavy. It isn’t good if there is a lot of weight too far forward of the front wheel. If I build another one of these I may put the front wheel about a foot forward. It would complicate the frame and it would no longer fit on standard car/bus racks, but it wouldn’t increase the bike’s overall length and I think it would improve the handling with some loads.

Finishing Details

The rack support rails have been closed off and snaps were added for holding the pizza bag:

The a downtube shift boss was added which connects to the original U-brake. That makes a very nice parking brake. V-brakes mounted on the seatstays provide the main rear braking.

The back of the cargo tube was sealed with a little bit of steel plate. This area ended up being fairly complex. Next time I might try ovalizing the cargo tube where it joins the seattube to avoid this extra work.

Here are a couple of other shots of the final bike:

Fork Fixture V-block

This weekend I also did my first major project with the new milling machine. I made a V-block for clamping a fork steerer tube. This will be the basis of my fork building jig and my fork alignment system. If you are interested in how I made it then click on the picture to see a gallery with more info. The new mill is working out very nicely.