Different Types Of Indoor Bicycle Training Stands:
Rim Trainer - aka Rim Drive Trainer
A Rim Trainer operates with two wheels that run on the tire rim - this propels a belt attached to a magnetic resistance unit.
If you want an indoor trainer for a mountain bike, then the rim drive is probably your best bet.
|PROS Of The Rim Trainer||CONS Of The Rim Trainer|
Highly Recommended Rim Trainer Manufacturer Is:
Minoura RDA 80 - Rim Drive Trainer Demonstration
Here's a very basic video that gives you a good idea about how they can work using a mountain bike.