"I got this product in a train set for Christmas it has great speed on the speed remote but not a lot of torque, and if you have a lot of carpet in your house like I do your Moter won't run at all. and also this moter is hard to put in other models besides trains because it is hard to stabeise it with out it spinning around. but this moter is really strong is trains so I would not recomened using two of these in a train. So now to the pros and cons. pros. really fast on track and tile. pretty strong when in a train
cons torque is not very good on carpet. drains batteries pretty fast. hard to make it stable.
over all it is a good product for running on track and tile."