[Mr Modifier]

I have 100mm around my raceway. 60mm is a bit low. You don't say if your track is digital ir analogue. I went for 100mm because of the multi-car pile-ups common in digital racing and i don't think less than that would hold a rolling Transit van!

Even with 100mm I get the odd car vault over the top! But maybe only once per 100 races of 30 laps each.

 

[Mr Modifier]

QUOTE (4.3 ZOOK @ 8 Jul 2012, 22:07) <{POST_SNAPBACK}>100mm=4"
I'm just thinking out loud....

Yep 4".

I use plastic skirting. It comes on a large roll (about 3 feet across - because that's as much as it can bend and still spring back).

The skirting is only about 5mm thick. I mount it using the pop rivet trick - drill up into the bottom of the skirting and insert the thin end of the pop rivet (you can glue it in if you want) and drill holes in the base board to insert the think end of the pop rivet. It works a treat.