Jack aus Maine möchte mit seiner 66er C2 Europa bereisen - Tipps?

[Jack Panzica]

Here are more photos of the build of my rear end by Gary Ramadie and his comments on Pattern.

Hi Jack
Here is the pattern. Now what you will see is the pattern is center to toe, which is how these gears typically set up, unlike "textbook" patterns which are perfectly center on the tooth. What I go by is the pattern being equal in length and somewhat uniform. Attached you will see the Drive & Coast sides of the teeth plus the lapping pattern that is on the gear out of the box- which I call "new pattern". Some gears do not have this but US Gear always does and I like to reference it since it may show how the gear set was lapped. In this case you can see the pattern is center to toe as well only a little high. Setting up this gear set it followed "suit" and the Coast side is center to toe. You will se in my pictures the lengths are equal. Now even though these are final lapped they are never uniform from one tooth to the next. Some may show a full pattern, the next one may be center to toe. I have seen them with one tooth tapering high and the next tapering low. This is where a lot of guys get caught, it is a time consuming process because each pattern change requires break down, cleaning, reshimming, reassembly, then testing. Many cycles to dial them in. Different ratios setup differently but it call comes down to how they were machined and lapped to start. Some new patterns are center on the coast and center to toe on the drive. The rotation is smooth with no binding or noise using a handwheel setup.