Aaron lists the Cargo Bike Rides on http://www.rideyourbike.com. The next one is probably Labor Day, but not announced yet.

Curious, what route do you use to travel from Ravenna (I”m over the hill in Hawthorne Hills area) to Aaron’’s in W. Seattle? Do you go straight up California from the beach?

How does one find out about future cargo rides?
Marc

Here is the CAD drawing (in flux, I fiddle with it on the bus almost daily):
http://alexandchristine.smugmug.com/gallery/5107556_tDdQU#331797126_osmnf

There is a sub-structure which consists of two cross pieces that are 12″ wide and brazed to the frame. If you look at the picture in full size those are made with orange lines. The rack (black lines) bolts down onto it.

My plan is to build the sub-structure incrementally to see what works. I think this is roughly the order:
* support bars alone, nothing else. This is similar to the James Black bike
* Diagonal stays from the back corners of the support bar to the downtube a few inches back from the headtube. This should add lateral stiffness to the rear support bar.
* Diagonal stays from the first set of those up to the head tube. This should help prevent twisting around the cargo tube.
* Tying the back stop of the rack to the head tube somehow. This would likely involve bolts going to those two new stays.
* (This isn”t on the drawing) Brazing a spigot that points down from the cargo tube and which goes out to the edges of the support tubes. That would tie the front support bar clearly into the rear one.

I hope to document what I learn from this incremental approach to see what works best. I think there is a lot to learn here.

Maybe you”ve already thought this out, but I wonder if struts from the rack sides to the bottom of the beam (forming a shallow “v” from the front) would eliminate this problem? Of course, it may not be a problem in your design, and James’’s shimmy may be related to something else, too.

I”ll be interested to hear more about how different loads handle. Great work, amd thanks for sharing the updates!

The handlebars are the On-One Mary Bars. Origin-8 (J&B Importers) sells a clone called the Space Bar that I”m using on the Cycle Truck.

Jimmy is way more creative with ideas for the Tikit than I am.

JimG — The deck was just a replacement and didn”t change the structure. I think a new roof deck would require permits though.

Thumbs up for FSC lumber! Those fasteners would be great for a sauna, keep you from getting burned on nail heads.

Belt drive Tikit? Disc braked Tikit? Cog bolted to the ISO disc holes, and the option of fixed or 9 speed (supa-flip-flopppable) Tikit? Pugslykit? Amphibious Tikit?

Which bars are those in the mountain bike pic? I”m putting together a new project/selling off old projects and those look like what I”m after.

1) Did you need to take out any construction permits to rebuild your deck?

2) What kind of frame is that MTB — the long seat tube extension above the top tube is unusual!

Cheers and thanks!
-Jim G