Welcome aboard.
Oxford's Adams Radial, there's an old thread with some comments which reflect the general findings at the time after introduction.
www.modelrailforum.com
I don't recall any volume of general reports of motor problems with this model: that problem badly afflicted the Dean goods, which was their second RTR loco. The major running problem the Adams Radial had was a traction problem, a common problem with small tank locos with unpowered wheels either side of the driven wheels, and the cures are described in the earlier thread linked above.
I have since that thread purchased one for myself to power a different loco body, and also three Oxford N7s and a J27, motors good in all of them, and the traction of last four absolutely fine. The Adams Radial does need a little care in set up, as I think I posted in the earlier thread, experience gained on a friend's purchase; this done it's up to the jobs it is reasonable to expect it to do.
Oxford's Adams Radial, there's an old thread with some comments which reflect the general findings at the time after introduction.

Adams Radial
HI, looking to purchase an Adams Radial and would be interested to know the difference between the model sold by Oxford Rail & that by Hornby? Any help appriciated. John
I don't recall any volume of general reports of motor problems with this model: that problem badly afflicted the Dean goods, which was their second RTR loco. The major running problem the Adams Radial had was a traction problem, a common problem with small tank locos with unpowered wheels either side of the driven wheels, and the cures are described in the earlier thread linked above.
I have since that thread purchased one for myself to power a different loco body, and also three Oxford N7s and a J27, motors good in all of them, and the traction of last four absolutely fine. The Adams Radial does need a little care in set up, as I think I posted in the earlier thread, experience gained on a friend's purchase; this done it's up to the jobs it is reasonable to expect it to do.