A mate and I hatched a plan to assemble a small team of ex-Australian Postal service delivery motorcycles to make an assault on a remote continent somewhere for a grand adventure. We figured we could make a trip down the Trans-American Highway, across Mongolia or through South Asia – the exact details of where wasn’t important, just stuff them in a shipping container and send them off somewhere.
The bikes themselves are Honda CT110 ex-postal delivery bikes. They pack a whopping 105cc single cylinder 4-stroke engine, 90kg of kerb weight and an automatic clutch. As ludicrous as they might seem, they really do go anywhere – they’re mechanically simplistic, weigh little enough you can yank them out of trouble and run on the smell of an oily rag.
They’re also designed to deliver the post, not travel the remotest parts of the world – so a few alterations were in order.
One of the greatest considerations was range. The postie comes standard with the fuel tank located underneath the rider’s seat. It only holds a miserly 5L. This gives the postie a range of around 150km, not nearly enough to take on the world. The solution, it was decided, was to fit a second tank across the crossbar between the handlebars and the seat. So I took a (not very quick) blast out to Emu Plains to visit the wrecker’s yard.
I came back with two fine specimens – one tank off a Honda XR125 and one off a 1982 Yamaha Yz125. Either of these would triple the range of the postie.
So out came the powertools. First off the ignition key has to be moved out of the side of the cross bar and get mounted on the bracket under the speedo. Then some brackets fashioned up to attach the tank to the frame of the bike, taking care to keep the plastic tank far enough away from the hot exhaust pipe (this is a challenge to get right).
I plumbed the reserve of the new tank into the ‘main’ feed of the fuel petcock and the reserve of the old tank into the ‘reserve’ feed. That way you basically keep the old tank as a massive 5L reserve tank.
All that was left was to give them a good test run…