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As you can see the true Rong-Fu 45 has a rack and pinion set-up for the z axis.
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- Bolt holes are 12mm spaced 75mm apart.
- The diameter of the half circle you see is about 3 1/4".
- There is a shallow 22mm slot (unpainted portion) that the spacer block sits into.
- The spacer the rack bolts to is 2 1/4" x 7".
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- There is a space of about 2 1/4" in between the uprights.
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Needed to true up the casting on top of the column to mount the motor plate.
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Used a Bridgeport with a Horizontal attachment.
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Casting was off by quite a bit but did not need to be true with the original design.
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Made a plug for the hole where the original "Z" crank handle went.
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Came out pretty good.
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Industrial Hobbies "Z" axis mount was too wide. Scribe shows how much had to be milled off.
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You can see the ridge from the factory rack that had to be milled off.
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Spacer block factory rack and pinion rack was mounted to.
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Not totally finished yet. Brake mounted to motor activated (turned off) whenever there is power to the Geckos.
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