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Unread 10-02-2016, 10:06
BoilerMentor BoilerMentor is offline
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Re: Rhino track failier?

Quote:
Originally Posted by Andy Baker View Post

1. So far, 5 teams have contacted us regarding cracks or fractures on their pulleys. We are sending emails to those 5 teams today. Oddly enough, all of these orders were shipped out on Jan. 10th or 11th.

Andy B.
Andy,

Our pulleys would have gone out in that range of dates. We have yet to observe a failure. We've been checking them at fairly regular intervals.

I believe the reason we have yet to see a failure is related to our dead shaft design. We use a .375" OD tube between drive plates with a 1/4" bolt though the center, so the axle acts as a standoff. If spacers are fabricated properly it makes it impossible to put a clamping load on the inner race of the bearings in the pulley by tightening the bolt.

That's my two cents. I'll report back if we do see a failure.

This situation is an example of the world class customer service we've come to expect from Andymark.

Thank you.
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2006-2008 FIRST Team 1741 Red Alert-Founding Student
2008-2011 FIRST Team 1747 Harrison Boiler Robotics-College Mentor
2012 FIRST Team 4272 Maverick Boiler Robotics-Founding College Mentor
2013-Present FIRST Team 1747 Harrison Boiler Robotics-Engineering Mentor