tag:blogger.com,1999:blog-946326014748728705.post8230426502110230561..comments2022-07-15T09:00:26.399+00:00Comments on The Treadmill Engineer: Treadmill Motors Part 1 - How do they work?The Treadmill Engineerhttp://www.blogger.com/profile/14655842688764296395noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-946326014748728705.post-36601183174911362742016-12-14T18:31:48.444+00:002016-12-14T18:31:48.444+00:00Hi Paul P
Thanks for letting me know....glad it wo...Hi Paul P<br />Thanks for letting me know....glad it worked out!The Treadmill Engineerhttps://www.blogger.com/profile/14655842688764296395noreply@blogger.comtag:blogger.com,1999:blog-946326014748728705.post-24170815963379969382016-12-14T11:20:34.804+00:002016-12-14T11:20:34.804+00:00You were correct. The "new" motor was d...You were correct. The "new" motor was date stamped 1997 so I installed another motor made in 2005. The amp draw now under load is now 6-9 amps so the issue was the motor as you concluded above. Just want to say thank you for your helpful article and advice!Paul P - USAnoreply@blogger.comtag:blogger.com,1999:blog-946326014748728705.post-20197611776730177712016-12-08T14:18:53.531+00:002016-12-08T14:18:53.531+00:00Hi Paul P.
Yes your comments do make sense. I agr...Hi Paul P. <br />Yes your comments do make sense. I agree that it could also be the case that the running belt is worn and there is too much friction between it and the deck but if you have inspected the surface of the deck for damage/wear and added some silicone oil then it can only be the motor. I have a movie here to show how to check and add lube to the belt https://youtu.be/gCDhYnNYfKA?list=PLXHEoPxMPM95vWgAOpHEres1DfFahRqM_<br /><br />Finally, I have invested in "new" motors which are in fact new old stock. In other words it turns out they were manufactured at the same time as the original treadmill but have then sat on a shelf for 10+ years which can mean they also test on the high side for current due to depletion of magnetism. Usually there is a date code on the motor that tells you the manufacture date. In such cases, it's usually the end of the road and time to buy a new machine!The Treadmill Engineerhttps://www.blogger.com/profile/14655842688764296395noreply@blogger.comtag:blogger.com,1999:blog-946326014748728705.post-78726150117679398902016-12-08T12:38:05.179+00:002016-12-08T12:38:05.179+00:00This is an interesting discussion. I have a motor...This is an interesting discussion. I have a motor that pulls 3 amps w/o any load but jumps to 9-12 amps when walking on the treadmill. The running belt is new and adequately lubricated. I recently had charring of the spade fitting on the MC board so I know the motor is pulling to much current and overheating the MC board. The fuse is a 15 amp fast acting but the board spec is 12 amp so I suspect that is partial reason for the overheating of the board. The DC motor is over 20 years old and used a lot but the brushes are not chipped or charred and look smooth. But your discussion on magnet strength reduction due to electrical voltage spikes is one thing I never thought about. So the MC board is operating OK (the output is 15 - 85 DCV) and the walking belt and board do not have much friction and the motor brushes are not worn and make good contact. The only thing left is the age of the motor and the decay of the magnetism which now causes an increase in amp once I step on the walking board. The MC board is overheating due to the higher amp draw plus the over-rated amp fuse. Does this make sense? I have another motor (new) so I may put it on to see if the amps drop (plus I will put in 12 am slow blow fuse). Does this make sense to you, it is the motor demagnetized is causing high amp draw (i.e - amps increase to obtain adequate torque) when I step on the walking belt?Paul P - USAnoreply@blogger.comtag:blogger.com,1999:blog-946326014748728705.post-81330367336468809592016-09-01T07:03:11.770+00:002016-09-01T07:03:11.770+00:00hello and thanks for your useful information publi...hello and thanks for your useful information publishing.<br />I had a question and not answered yet.<br />My brother is an physiotherapist. and he is going to build a hydro-treadmill by himself and asked help from me.<br />may i ask you to provide some necessary information of treadmill working mechanisms in water to us? I'll be so thankful of you.<br />soroush.delpassand@gmail.comAnonymoushttps://www.blogger.com/profile/05906296835583470291noreply@blogger.comtag:blogger.com,1999:blog-946326014748728705.post-4834340587206699952016-07-25T13:28:49.667+00:002016-07-25T13:28:49.667+00:00Also check the running belt and platform for wear ...Also check the running belt and platform for wear - excessive friction due to wear or lack of lubrication could have caused the original problem. For info, the motor can't be reliably tested using a drill battery. This does not "load" the motor sufficiently to expose problems with the permanent magnets which can cause excessive current draw (the effect is similar to excessive friction). My Engineers use a separate motor drive unit so that we can test the motor in situ and measure the current draw using a current clamp. Treadmills in 220V 50Hz territories should pull less that 5A on the motor at 12kph with a 95kgs person running on the machine.The Treadmill Engineerhttps://www.blogger.com/profile/14655842688764296395noreply@blogger.comtag:blogger.com,1999:blog-946326014748728705.post-39087359985211747252016-07-22T10:18:03.228+00:002016-07-22T10:18:03.228+00:00My treadmill blows the home trip switch when i pre...My treadmill blows the home trip switch when i press the start button. The red light shows on the circuit board, incline works fine, belt moves when connected to a cordless drill battery. But as soon as the motor starts moving it trip the house fuse and i need to reset it. Is it the circuit board or is there anything else to checkAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-946326014748728705.post-52869055532595142562014-10-30T03:11:39.911+00:002014-10-30T03:11:39.911+00:00You can use HP for the power given by the Torque i...You can use HP for the power given by the Torque in this case so it would be Torque times Velocity.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-946326014748728705.post-10030978634466375212013-08-03T20:09:14.761+00:002013-08-03T20:09:14.761+00:00As I Know torque is the result of multiplying of f...As I Know torque is the result of multiplying of force by distance. So, I would say that torque is stated in kg x m, lb x foot and so on. You can use Watts and HP to mesure the power capacity only.<br />SergeySergey Yuferevnoreply@blogger.com