Treadmill - motor power

Hi, I've been looking at a treadmill that has a DC Motor 0.5 HP VR, and what
seems like a newer version of this treadmill which has a DC Motor 2 HP PWM.

What is the difference between the two motor types, and would a 0.5 HP VR
motor be equivalent in speed and power to a 0.5 HP PWM motor?

Thanks

"Scott Saunders" <scott.DeleteThis@nospam.com> wrote:
> Hi, I've been looking at a treadmill that has a DC Motor 0.5 HP VR, and what
> seems like a newer version of this treadmill which has a DC Motor 2 HP PWM.
> What is the difference between the two motor types, and would a 0.5 HP VR
> motor be equivalent in speed and power to a 0.5 HP PWM motor?

I think I found your answer after a little googling. Take
a look at http://www.gymworld.co.uk/guide_treadmills.asp,
notably the titles "Treadmills: Horsepower" and "Treadmills:
Motor Controller". "VR" is the same as "SCR" in the above
web page. Google for ''"variable rectifier" scr''.

PS: Please learn how to crosspost, instead of duplicating
postings.