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Unread 12-01-2013, 23:42
RRLedford RRLedford is offline
FTC 3507 Robo Theosis -- FRC 3135
AKA: Dick Ledford
FRC #3135 (Robotic Colonels)
Team Role: Mentor
 
Join Date: Jan 2010
Rookie Year: 2009
Location: Chicago, IL USA
Posts: 286
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Re: How to attach a metal hook to a timing belt.

Quote:
Originally Posted by PyroKnight View Post
Hi, our team is trying to attach a type of hook on to a timing belt without using glue (in our testing it proved too weak). It needs to be able to go around the belt as this will be constantly revolving around and pushing frisbees but it cannot be fastened from the bottom. We'd appreciate any suggestions, thank you.
Shoe Goo urethane adhesive will hold the hooks on, as long as you give it time to fully cure 48 hours. It has super tenacious grip and very high peel strength.
It also remains flexible after curing. so it can handle the flex of going around the pulleys, as long as they aren't super small dia.

If you want a thick coat, put it on in two applications, allowing 1st one 24 hours cure time before applying the second. If laid on too thickly. lowest level curing gets delayed from so much more piled on top of it. It cures by out-gassing volatiles, so keep in a well ventilated area during curing.

To check if it's done curing, just smell it. Stink means not done yet.
Sticks to most everything, as long as surface is fully cleaned.
Best all around glue you can buy.

I build custom roller skates gluing the skate plates onto carbonfibre reinforced soles of athletic shoes (no screws), and have skated one outdoor pair for 13 years with no glue joint separation.

Example: glue mounted indoor speed skates -


-Dick Ledford
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FTC 3507 RoboTheosis
FRC 3135 Robotic Colonels