Mum and Sister have been timing for about 10 years now!!!! so they are accurate within a tenth of a second!! Not too expensive, i contribute as much as i can, using old tires, etc etc Most of the time we go 50/50 with costs. Could move up to Red with those times, but talking to Nelso, Dad and Alex we all thought it was best not to move up untill i am carving up green group making quick confident passes. You have another few days yet chubb, then ill be chasing you :P