[jaubery]

My barriers are 3/4". The guard rails are 1/2". The track is 4' by 8'. The lanes are 7 1/2" wide. That's enough for 5 bits to race on. You can see my track at:

http://groups.msn.com/TheAdmiralsLai...y.msnw?Page=21

There's pics on page 22 too.