The Quadricycle Build Story1st August 2010
The new formed-plywood ex-conference room chairs, mounted, with pre-drilled locating holes, giving a fore-aft movement of about 8":
Close up of the rear-right brake set, now moved to align with the new 20", 48 spoke BMX wheels:
Bottom Bracket Mark II:
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23rd August 2010
An overall shot of the quad, now with both sets of handlebars attached, and with both bottom bracket mounts converted to BB MkII:
You can just about make out an elasticated carbon-fibre tent pole that is wedged into the front wheel arch, and the rear wheel support, this was just there whilst I was musing about a fairing shape! During test rides around about this time, we discovered that BB mount MkII was just as unsuitable as Mk I, so a Mark III was called for!
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31st August 2010
A bit of angle-grinding later, and here is Bottom Bracket Mark III:
This modification on the bottom bracket mount proved absolutely rock solid! The wheels on the donor bikes may have been white-elephants, but a lot of other bits are coming in useful!
New chain-pulleys to get the chain-line in order!
After a test ride with the pulleys like this, the forward of the two (on the right) was raised up and mounted directly to the level of the 1" square steel spacer bar to get the chain running a bit straighter, and lower the forces acting on the mount. The original idea behind having it as low as possible was so that the seats could be set further forward, but in practice, the seats should never have to go far forward enough to interfere with the chain as it is now.
First tester-coat of paint on the frame:
It was around this time that the then soon-to-be-Mrs. IRW and I started thinking seriously about using the quadricycle as our wedding transportation. We had been joking about it for a while, but were not sure how the build would go, so I stepped up a few gears to get it finished in time for the big day on the 22nd of October.
