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 One of the many unwritten laws of engineering failure is that the problem will occur in the most inopportune time. - Dave Scheck [more] |
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Most teams have used Poly-Cord type material to make their roller systems this year. FRC Team 1711 used Thera-Band. A physical therapy medical based product. Resistance values are color coded.
Yellow=1.8 lbs. (LIGHT)
Red=2.7 lbs. (MEDIUM)
Green=3.1 lbs. (HEAVY)
Blue=4.5 lbs. (EXTRA HEAVY)
Black=4.9 lbs. (SPECIAL HEAVY)
Silver=8.6 lbs. (SUPER HEAVY)
Discussion
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03-06-2012 12:32 AM
Steven Sigley
Re: pic: Thera-Band material
I'm really interested in how well this works, do you have any videos?
03-06-2012 12:32 AM
Re: pic: Thera-Band material
Nice! How effective did you find it was?
Do you think there are any advantages over polycord?
03-06-2012 08:52 AM
scottydoh
Re: pic: Thera-Band material
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Originally Posted by jason701802
How did you splice the ends?
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03-06-2012 09:19 AM
Brandon Holley
Re: pic: Thera-Band material
We used Thera-Band as a prototype shooter wheel material in 2009. It worked awesomely.
Nice idea using it as an intake belt!
-Brando
03-06-2012 09:59 AM
kramarczyk
Re: pic: Thera-Band material
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Originally Posted by jason701802
How did you splice the ends?
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I only recall seeing them out on the field once, but it was moving a ball at the time, so feel free to draw a conclusion from that data point.
03-07-2012 03:33 PM
JamesBrown
Re: pic: Thera-Band material
What exactly do those weights measure? If I were to apply the rated force to pull the band how far would it stretch?
03-07-2012 04:20 PM
Nate Laverdure
Re: pic: Thera-Band material
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Originally Posted by JamesBrown
What exactly do those weights measure?
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EDIT: more data is available in the Thera-Band Instruction Manual. The OP's table corresponds to approximately 50% elongation.
03-10-2012 09:23 AM
nnfuller
Re: pic: Thera-Band material
Well right from the get go it has the advantage of not needing a 2 inch diameter pulley to work.
01-07-2013 01:05 PM
Timz3082
Re: pic: Thera-Band material
Just thought I would comment because this looks like it could help people with their frisbee intake ideas! I will show this to my team and see what they think!
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