Strategise the Crank

Had a call from Colin this afternoon, he wanted me to come over and lay down some policy guidelines for the Crankshaft. The problem is, how long is a piece of string? Things we make are generally imperfect and what we built 100 years ago are somewhat more so. The question is how good do I want it and the answer has to be good enough to get me through the next 4000Km rally without trouble and then some. The last thing I want is to be sitting on the side of the road with a broken car wishing I had sold my children into slavery in order to have the perfect unbreakable crankshaft.

Colin has found the following problems:

  1. The conrod is not straight although the big end the little end are parallel, the rod is “S” shaped and is scraping the inner flywheel.
  2. The inner flywheel to output shaft taper is wonky (not his words)
  3. The big end journal had been previously machined making one of the tapers  seat about 60% however this is not the drive side so is probably OK
  4. One of the crankcase breather “Flapper” valves is missing and because of previous modifications may be hard to rectify.

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1 Response to Strategise the Crank

  1. Geoff says:

    Oh dear oh dear … but hey, instead of selling off the kids, how about selling (some of) the horses?

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