This is Calvin & Bob.
I modified my B.O.B. trailer to fit ‘Calvin’, my Surly Ice Cream Truck. The standard 26” BOB yoke was lengthened by welding a 4-1/2” long flat bar to each front arm of the yoke. Then the yoke was generously bent open by hand.
I used the BOB’s supplied quick-release skewer and bobbins, but I had to lengthen the shaft of the skewer to 8-3/4” long. This was done by cutting and welding in a piece from another skewer. This quick release now sits inside the 12mm pipe axle that comes on the bicycle.
The BOB’s wheel is from a wheelbarrow and can be found at a local hardware store. The wheel is 6-3/4” diameter, the tire is 3” wide, and overall the wheel and tire measure 13” diameter. I replaced the wheelbarrow wheel’s low-quality bearings with better sealed bearings and mounted it to a bicycle axle with some spacers. The fat wheel with low tire-pressure really keeps the trailer quiet and less bouncy on the trails.
The milk crate is bolted to the trailer deck. A lid from a Rubbermaid ‘Actionpacker’ fits atop and is hooked on with a bungee cord. The BOB can hold all the following trail-building tools at once: water bottle, gas bottle, shovel, fire-rake, axe, brush cutters, machete, and bow saw (and a chainsaw too with the lid removed). Plus there’s room left over for your hiking boots and lunch!
If you’ve got a fat-bike that you are proud of, let me know about it. Send words and pix to firstname.lastname@example.org and you may see your pride and joy on these here pages!