Sunday, 24 February 2013

Battery Box

I stumbled across this on ebay. It was from a 1978 CZ 175 (477). Without asking measurements, I put a 99p bid in and left it. This, if it fit's, would give me a battery box, oil tank and airbox. As the only bidder, it's mine, and even if it goes on the "for future projects" shelf as not suitable (quite a full shelf) at 99p I can't lose, can I?


Breaking it down, the oil tank separates with two hidden bolts, the airbox halves and the inlet cover removed, it was clear it would fit, but with a lot of shaving, grinding and cutting.

Some of the mounting tabs had to go, one at a time, until it squeezed in.




Once in place, I realized the oil tank would not now fit (not to mention a PE250 OE Exhaust I had acquired, which goes over the cylinder head and cross the frame to exit on the opposite side to a TS250, crossing where my new Airbox was sitting) Luckily, the tank just needed moving forward 25mm, easily achieved by re-drilling the mounting holes (the old ones are hidden from view) and I needed to form a bracket to mount the whole lot on the frame.

Frame tidied up


Once the original bracket had been consigned to the scrap box, it was an easy task to cut, from a card template, and weld on some sheet metal.

The new oil tank mount holes needed to be elongated to enable me to slide the tank back, level with the frame


As the original air inlet was not to used, the hole saw came back out of the toolbox.

Holes and mesh = FAST, it just does!



I've now started to make an alloy "side panel" to tidy up one side, but I'm still working on a final design. I'm so tempted on the other side to leave the oil tank as it is, add a bit of patina (cant believe I just said that)


This little exercise has now taken up over 40 man hours - most of which has been putting the airbox in the frame, measuring up, removing, modifying and putting it back in - and with only a few spare hours each week it's dragging on. But, there a light at the end of the tunnel, and I'm happy with it so far.