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Ring And Pinion Gear Patterns

Ring And Pinion Gear Patterns - Use shims to move the pinion closer to the ring gear to move the drive pattern deeper on the tooth (flank contact) and slightly toward the toe. Two cut ring & pinion gears (face hobbed): Rotate the pinion to turn the ring gear four complete revolutions on the drive side and then four in the opposite direction for the coast. If your gear tooth pattern is too low, down towards the gear flank (root), you will need to decrease your pinion. 3) rotate the ring gear in both directions over the painted areas using the pinion yoke to spin it. Use shims to move the ring gear closer to the pinion gear to decrease backlash. If the pattern is heavy on Drive pattern (convex side of gear) moves slightly lower and toward the toe. Drive pattern moves slightly higher and toward the heel. Once the pinion gear is installed, position ring gear and carrier into housing to check backlash.

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I Have The Pinion Depth Set At 2.8235 And The Backlash At.0095 (Gear Specs Are 2.823 On The Depth And.010 On The Bl).

The images below illustrate both acceptable and unacceptable ring and pinion gear patterns. Use shims to move the ring gear farther from the pinion gear to increase backlash. Ring gear tooth profile face hobbing face milling the toe of the gear is the portion of the tooth surface at the end towards the center. When changing pinion depth, make large changes until the pattern is close to ideal.

Use Shims To Move The Ring Gear Farther From The Pinion Gear To Increase Backlash.

The gears came with the the.035 shim that was used for the pinion when they set it up, the original 3.55 gears had a.033 pinion shim. (2) increasing backlash moves the ring gear away from the pinion. Use shims to move the pinion closer to the ring gear to move the drive pattern deeper on the tooth (flank contact) and slightly toward the toe. Web once you have established the correct backlash, it is time to run a contact pattern on the gears.

(See Figure 2) Figure 2:

It appears that the drive is pretty centered with a bias towards the toe, and the coast is off the heel. Two cut ring & pinion gears (face hobbed): I am setting up a gm 12 bolt truck rear with richmond 3:73 gears. Coast pattern (concave side of gear) moves lower and toward the toe.

Make Large Pinion Depth Adjustments First.

Web ring and pinion tooth contact patterns. Apply tooth contact compound to the ring gear in two places. I got a very low mileage used set of frpp 4.10 gears. This will help give you a nice clear pattern like this one.

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