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  #16   Spotlight this post!  
Unread 03-02-2003, 16:05
ajlapp ajlapp is offline
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over the ramp stability

Quote:
it looks a little tipsy... did you do any tests pushing against the top of it? or put it up against your old bot, see if you get pushed over
we have done a little testing........

because of the 3 d.o.f. of the arm assembly, radical changes in cg position can be made. The enitire assembly when folded down is just over 14 inches and we can navigate the ramp in that form, so we can be very tippy, or very not tippy when we want to be.
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Unread 05-02-2003, 07:32
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Re: bolts in treads...

Quote:
Originally posted by Joe Johnson
What to folks think about the bolts attaching the tread?

I think literal interpretation of the rules would not allow them.

Other thoughts?

Joe J.
It is my opinion that the judges/refs/inspectors at each of the competition sites will interpret this rule differently. If the intention of the fastening device is to gain traction (say by backing the screws up a little so they stick out beyond the tread, or if washers or wire ties are perpendicular to the forward motion of the robot in order to 'dig-in' to the carpet), then they would make you change it.. without a doubt. But if you just need something that will fasten the tread to wheels, I think it will be okay as long as an effort is made to preserve the carpet.
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Unread 05-02-2003, 12:19
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Re: bolts in treads...

Quote:
Originally posted by Joe Johnson
What to folks think about the bolts attaching the tread?

I think literal interpretation of the rules would not allow them.

Other thoughts?

Joe J.
The "bolts" are actually smooth-faced dome-style pop (blind) rivets. Their function is solely to fasten the 'traction device' belt to the wheels. They are not traction devices and do not protrude through the belt to ever make contact with the carpet.

Quote:
Rule M17
Robot wheels, tracks and other parts intended to provide traction on the playing field (“traction devices”) may be purchased or fabricated. In no case, will traction devices that damage the carpet or other playing surfaces be permitted. Traction devices may not have surface features such as metal or hard plastic studs, cleats or other attachments.
Whether you want to use the literal meaning of the rule (no metal surface features) or the spirit of the rule (no carpet damage), we believe our fasteners are completely legal. They are below the surface of the traction device itself, so they do not give the traction device metal surface features; nor do they cause any carpet damage, as they do not even come in contact with the carpet. This may be up for interpretation when it comes time for inspection, so we are prepared to make alterations if necessary to comply with an inspector's decision.

Adam
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Unread 05-02-2003, 12:52
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FIRST has declared in Team Update #10 that metal fasteners used to attach tread to wheels are permissible.
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Unread 05-02-2003, 14:09
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Quote:
Originally posted by MikeDubreuil
FIRST has declared in Team Update #10 that metal fasteners used to attach tread to wheels are permissible.
I just looked through update #10 and couldn't find anything related to legalizing the use of metal fasteners to attatch traction materials to wheels. What page is it on? Maybe I'm just blind.
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Unread 05-02-2003, 15:30
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Thank you for calling me out on that... You are correct and I was in another world when I posted that.


FIRST clarified their position on Rule M17 on the following post to the FRC Forum by a person on our strategy team.

http://jive.ilearning.com/thread.jsp...t=30&trange=15
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Unread 05-02-2003, 15:39
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Very cool. Thanks for bringing that question/answer from the FRC Forums to my attention. I missed it.
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Unread 05-02-2003, 17:17
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What happens when your robot is smashed into at full speed? (It will probably happen to most robots at some point)
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Unread 05-02-2003, 20:28
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robot as of february 1

Quote:
What happens when your robot is smashed into at full speed? (It will probably happen to most robots at some point)
remember this is a picture of our robot as of last Saturday. with 1/3 of the build season left, the robot will grow in weight and robustness as skirting, and armor plating are added. our weight as picture was about 85 pounds.

several things in that pic are also quite temporary like the tube frame. if you have an opportunity to see the robot closer to ship it will most likely have a more substantial outer surface.
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Unread 12-02-2003, 10:18
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come this saturday we'll have the whole kit and kaboodle.....

the robot is shaping up nicely.
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