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Yeah, I was able to isolate the problem to the cable. The VBC cable came pre-lubed with Sil-Glyde, and Joni mentioned their inner cables are "wound correctly". Venhill recommends using gear oil, which I initially tried to use on their cable. After talking with Joni, I tried Sil-Glyde on the Venhill cable, but it didn't help. So perhaps there's something more going on than just the lube. Interesting comment by Ron on resistance since the tach bounce behaves like the cable is being overly twisted by the drive. At one point I suspected the cable drive bit wobbling in the drive gear since there is some play, even in the new drive gear.Btw, a trick that Andy mentioned to help isolate a bad tach vs the cable or drive was to use the speedo cable to drive the tach at a low speed. It just reaches once I removed the soft ties and in fact my tach did spin with very little bounce.
Yeah, I was able to isolate the problem to the cable. The VBC cable came pre-lubed with Sil-Glyde, and Joni mentioned their inner cables are "wound correctly". Venhill recommends using gear oil, which I initially tried to use on their cable. After talking with Joni, I tried Sil-Glyde on the Venhill cable, but it didn't help. So perhaps there's something more going on than just the lube. Interesting comment by Ron on resistance since the tach bounce behaves like the cable is being overly twisted by the drive. At one point I suspected the cable drive bit wobbling in the drive gear since there is some play, even in the new drive gear.
Btw, a trick that Andy mentioned to help isolate a bad tach vs the cable or drive was to use the speedo cable to drive the tach at a low speed. It just reaches once I removed the soft ties and in fact my tach did spin with very little bounce.
