Quote:
Originally Posted by Al Skierkiewicz
OK, time to add a few words of sense to this discussion.
1. Adhesives, particularly double sticky tape are not fasteners. We can argue industrial adhesives but so far I have not seen anyone discuss these yet.
2. The tread of the pneumatic tires you are discussing cannot take the force of the wheel speeds that will be generally encountered. I believe the operative phrase is "destructive disintegration". Have you noticed how hard it is to find any speed data on these tires?
3. The imbalance and vibration is telling you something, you are not listening.
4. Just because you haven't witnessed parts leaving the flywheel yet, doesn't mean it won't happen.
5. Most of you are using motors that free speed above 15,000 RPM. Coupled to a 3:1 transmission, what numbers do you get? Direct drive on a 775 is over 7,000.
I think you guys need to rethink your designs to be sure. Not pretty sure, not 'oh it will never happen' sure, really sure. Please remember that inspectors will be looking at your robot with this in mind...
R08
ROBOT parts shall not be made from hazardous materials, be unsafe, cause an unsafe condition, or interfere with the operation of other ROBOTS.
I am sure that if your design should cause any flying debris, an inspector will be asked to either disable your mechanism until such time as you can prove it won't hurt anyone or anything, or whatever it takes to prevent a re-occurrence. Now is the time to be really sure, not during competition.
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Hi Al,
There are many teams using these pneumatic tires on their shooter but I am getting the impression from your various posts that you are deeming them unsafe to use in this application. My concern is that you as a inspector or someone else will rule them illegal during inspection based on what you specified. This will in turn render a robot's shooter useless until another "more safe" wheel is used.
Yes, these tires were not specifically designed to be used under these circumstances but I have yet to hear of one coming apart. I agree that great care needs to be taken in how they are mounted and balanced. Also, it is highly recommended some sort of shield be used to prevent any flying debris should something come loose.
If a team takes these steps, do you see them capable of being used in a safe manner?