TouringGodet
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I am replacing the original ESA on my Shadow, with the Series D style parts. I ordered the new ET60/1 engine sprocket and PD3/3 22 hole ESA cam from the VOC Spares Company, which I understand were recently revised to incorporate a new cam profile. Here are videos showing how the point of contact moves along the profile, for the old and new parts, along with a video showing the wear pattern on the original parts.
Original cam profile
VOCSC new profile?
Wear pattern on my original parts
Original cam profile
VOCSC new profile?
Wear pattern on my original parts