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Old 03-07-2017, 09:00 AM   #1
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Default RB two piece rotors design and construction detail

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Old 11-06-2017, 04:54 AM   #2
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With RB center mount design, the rotor offset remains unchanged w/o being affected by the disc thickness. In other words, the same hat can be assembled with 30 or 34mm disc w/o requiring a new hat to compensate the thickness change like conventional surface mount design.

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Old 01-11-2018, 05:53 AM   #3
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Conventional Surface Mount:

RB Patented Center Mount:
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Old 01-11-2018, 02:40 PM   #4
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Originally Posted by cobalt View Post
I need to ask who and why would anyone cast a rotor vertically? It is contrary to standard foundry practices and far more difficult to make a quality product. I am trying to figure out what benefit there is by doing so and if you look at all the rotors the parting line is the same so I am skeptical that other manufactures cast their rotors vertically. Quality of a cast part is the result of many factors and if done properly should achieve relatively consistent results.

Good question.

To clarify, the difference is the Sand Mold Making Machine; There are two types - Vertical and Horizontal.

From the casting parts you really can't tell which type of mold it's made from because the mold parting line are both (usually) in the center of cooling vane.

Vertical sand molding is ideal for smaller casting parts, more compact (less space), lower cost in equipment and maintenance, but when it comes to brake disc casting it has its 'inherent" drawback in casting quality.

Let me provide following self-explanatory illustration to help member here better understand the difference of the two type of sand mold. The dimension shows the depth from the gate to the bottom of cavity - The shorter time the molten iron (@1510C/2750F) to fill up the cavity the better for a more uniform casting.

Should other members have similar questions please feel free to ask. I will keep the answer easy to understand and objective.
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Old 01-19-2018, 08:16 AM   #5
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Disc Construction

Convergent vanes

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