Building a B1 - eccentric behavior
Entry posted by Fen End Pit
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Over the last week I managed to make up a number of tiny pieces of nickel silver into lots of rods with complicated names.
The radius rods and expansion links comprised of about 24 little bits of metal.
These fitted into the motion brackets ok and didn't foul any of the other parts I'd made up already.
Next up were the return crank and the eccentric rod. The return crank needed to be tapped to fit over the crank pin on the centre axle which was fun. I had to chop up an Alan Gibson crank pin boss to make an extra bit to cope with the extra thickness of all the rods. I thought there was an 'extra long' boss in the packets but there were only small ones 1.4mm and medium ones 2.4mm long.
Much to my surprise after a bit of fiddling the rods all went round smoothly and nothing clobbers anything else.
Next up is the combination levers.... these bits don't get any bigger.
Wish me luck
David
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