True, true Marc. Many cars with knowing drivers, perhaps have some success with keeping wear at a minimum, (wear which may be a result of a poor design to start with.) IMHO, clutch chatter would almost have to affect the bore. If it were just a matter of lateral wear to the thrust, keeping the foot off the pedal may make some difference. However the radial wear is quite severe on many cases; I have seen wear on many cases that cannot be machined. Perhaps it was several times they had been bored, but still, the cost of a case is what I would call a rather major cost, (
which would be the major advantage to which I referred in a previous post.)
Anyway one looks at the situation, there is seldom (to NEVER) wear to autostick cases, and almost always wear to the cars with standard transmissions, which can (not saying always does) result in a major cost to the rebuild. If you think that chatter does not affect wear to the bore and thrust and it all comes from people riding the clutch, I'm good with that.
And quite true, 36 and 40 hp motors did not see the problem as much as the later cars. Although the clutches were some smaller than the later bugs, they were sufficient for the HP produced. I worked for a German guy in 69'-'70, and we saw few, if any, cars that needed to be bored, perhaps because the 40 hp cars were just then needing their first rebuild.
Well, since I do not drive a bug, I'll not worry one way or the other about case wear; I have one case sitting in the shop to bore; when I get it done, it will be the last that I do.
As far a finding a clutch pedal operating shaft, which was my first inquiry which and led to this thread and posts, I gave up and welded (what was) the old hook, producing a really nice unit. I am confident it will last as long or longer, than first one. I'm just glad it was simple (guy wanted a new one but after seeing the welded one was quite satisfied.) I am happy it wasn't the cable conduit that had broken loose.... a bit harder situation to correct.
