Taking a grinder to Britain's motorcycling heritage.
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Saturday, 8 May 2010

Exponential weight loss

Chatted to the man about having another crack at the rear light yesterday. A bit of measuring revealed that the one he has made has a diameter of 89.5 mm where the light unit fixes, whereas the O.D. of the light unit rubber is 72mm. That's a reduction of 20%, I have told him to reduce all dimensions by the same 20%, this will virtually halve the weight before he starts boring out the inside.

That sounds a bit odd but the way I figure it is this;
A block of material that measures 10cm x 10cm x 10 cm is 1000 cubic centimetres.
Reduce the dimensions by 20% to give 8 x 8 x 8, this results in 512 cubic centimetres.
so that will be a major step forward in ending up with a usable piece

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