pic: Thera-Band material



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)

I’m really interested in how well this works, do you have any videos?

Nice! How effective did you find it was?

Do you think there are any advantages over polycord?

How did you splice the ends?

I believe they come as a closed loop band. Someone correct me if I’m wrong.

We used Thera-Band as a prototype shooter wheel material in 2009. It worked awesomely.

Nice idea using it as an intake belt!

-Brando

That particular one was connected using rubber cement. I explicitly asked the team that question.

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.

What exactly do those weights measure? If I were to apply the rated force to pull the band how far would it stretch?

Resistive force (albeit in mass units!) at a certain percent elongation:

http://www.thera-band.com/UserFiles/PullForceChartUpdate_500pxW.jpg](http://www.thera-band.com/faqs_consumer.php#faq_1)

EDIT: more data is available in the Thera-Band Instruction Manual. The OP’s table corresponds to approximately 50% elongation.

Well right from the get go it has the advantage of not needing a 2 inch diameter pulley to work.

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!