Adding friction material to timing belts

[Ether]

Originally Posted by pmangels17

You could always try a flexible latex caulk as a grippy material

I doubt a latex caulk would be tough enough.

Originally Posted by asid61

We'll have to do testing on how well it adheres

Shoe goo adheres tenaciously and is tough and flexible.

I repaired a split tractor seat cushion with it. Four years of abuse and still no sign of letting go.

[Mr V]

Years ago there was a track style robot in the PNW that used timing belts as the tracks. They were custom made timing belts that had a urethane backing on it. They were extremely grippy. They were like a 2" wide belt and if I remember right they weren't all that expensive considering their size and that they were custom built. I'd check with Gates and see if you can get a pre-done solution.