GT Chucker 1.0 seatclamp size question

[Alison]

My hubbie is having to use this as a temp bike, belongs to our son, and the seatclamp has broken on it, does anyone know what size it takes as we have no vernier calipers to measure it.

Thanks

Alison

 

[cyfa2809]

Hummm 31.8 isnt it?