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Unread 30-01-2014, 13:39
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Richard Wallace Richard Wallace is offline
I live for the details.
FRC #3620 (Average Joes)
Team Role: Engineer
 
Join Date: Jan 2003
Rookie Year: 1996
Location: Southwestern Michigan
Posts: 3,642
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Re: pic: AM3CIM4U with Grayhill

Quote:
Originally Posted by otherguy View Post
...I took a look at the specs between the two parts, and it seems like the only difference is that the 63R part number has a higher lifetime rating and higher max RPM rating.

61R, 10 Million cycle lifetime, 300 RPM
63R, 300 Million cycle lifetime, 5000 RPM

Price points seem to be the same on octopart
Checked last night, turns out we are using Series 63 Grayhill encoders after all. We have two sets; one pair of 63R256 and one pair of 63R128. The programmers need to decide which set will go on this year's drivetrain.

We switched to Grayhills because they are more rugged than the EP4. It is nice to be able to drive aggressively and not worry about whether your auto mode will be working for the next match.
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Richard Wallace

Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003

I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)
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