Quote Originally Posted by Muirenn View Post
Thanks TX!

I'm wondering about the platform. I picture placing the rollers on a piece of wood. That wouldn't be any different from the ground, so I assume I'm missing something here?

Hee hee, sorry, I should have been a bit more specific, the platform is around the rollers, not underneath...
When you place your bike on the ground, the wheels touch the ground at the same level (height) as your shoes. When you place your bike on the rollers, the wheel is about 4-9 inches higher than the ground (where your feet are), depending on the diameter of the roller drums.
So building a platform around the rollers on both sides (with or without a bridge) takes the wheel back to ground level, so to speak. If you stand on the platform next to the bike - you are at the same height (compare to the bike) as if you were on the road.
There's probably pictures somewhere on the internet, if I remember I will take one of my rollers so I can post it here