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Low Racer |  |
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The low racer was built simply and quickly from an exhaust pipe. It is generally nice to ride and certainly gets up some great speed. The seat is part of a recycled plastic drum. The intermediate drive is a rear cluster disassembled and cogs reassembled in a different order to suit. It is screwed on to the right hand bearing cup from a bottom bracket that is bolted to the brace plate across the top bend. It was built too quickly for detailed construction photos.
Other random info:
- Locating the front axle in front of the line through the head stem would
make it more easily rideable, but as-is it’s not bad theft protection.
- The head stem angle should roughly dissect the upper bend.
- We used Steve Nurse's program for the hole for the headstem: www.ihpva.org/incoming/tubemitresn.xls
- Chain hop was a nuisance climbing and turning right until we added the
rub guide for the rising chain entering the mid-drive. We should make
the rubbing surface from delrin or similar.
- Refer also to members pages, builders info and links on the ozhpv and
vichpv web pages and join their email lists for more useful construction
stuff. We can be contacted via the vichpv email list.
Eric and Alan
Specifications:
Wheelbase: 1000mm
Road Clearance: 170mm
Chainwheel: 40t
Mid- Drive: 15t in, 20/28t out (dismantled 5sp)
Freewheel : 11-34 (7sp) Shimano Megarange
F.Derailleur: nil
Mid Derailleur: ManusShift®
R.Derailleur: Shimano Deore
F.Tire: 20x1.8 Vittoria Kevlar
R.Tire: 27x1.25 ChengShin
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