Hi, I bought a cheap motor speed control board from amazon. It worked briefly but I don't think it's built for such a heavy load.It would be ok if you wanted to use the motor to make a belt grinder for example.The link to the board I used is in the comments.
Yeah it's a shame. I imagine those cheap controllers are ok for a belt grinder, but a treadmill will have a big constant load.There's a reason why the proper boards are so complex :)
Well Jack, it's not to be with the cheap speed controller.It did work briefly, although the motor didn't sound good.It didn't really go slow enough either, I was at a fairly fast walking pace on the slowest setting.After about 60 seconds the fuse on the board pops, it doesn't actually say what size the fuse is. I tried a 20 amp one and that popped too.I'll just wait until my chinese treadmill controller arrives :)Thanks for your input.
Thanks Jack, I'd like to assume he tests it all off camera before making the video.I like your idea of using a bulb to test it first. I imagine I'd only really need to put 50-60v through the motor, as 130v would be full speed which equates to around 12mph.I can use the aluminium tray off the original board as a heat sink, as that's what the bridge rectifier was fixed to. I'll keep you posted :)
I've just ordered a speed control board off Amazon after watching another guy using one.It's only £7 and I can use it with the bridge rectifier that's on the current board :)https://www.amazon.co.uk/gp/product/B07BP4N2VP/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Hi Jack, I was hoping you'd reply, you were very helpful last time :)I hope there's enough info in the images.There are a few bridge rectifiers on the board, so I'm guessing the AC goes into the transformer, is reduced and passes through the BR?I'll look into those dimmer switches.
I checked the bridge rectifier on the left, it's 30A 600V so I think it will work with the speed controller I've ordered :)
Good news, after changing a few MOSFETs (I think a couple of them were fine, but wasn't sure) the treadmill runs.However, while I was testing it it had another issue. The incline motor tried to self calibrate and didn't know when to stop. This cause the machine to think the motor was being overloaded.I think there must be a problem with the incline sensor, I'm not sure what type it is I'll add a photo later.So kind of good news, and a bit of bad :D
Thank you Jack, I've actually now removed 5 MOSFETs which are all dead. I've ordered new ones so I'll see how it goes.I did find that service manual too, however those models are quite different from mine and don't have this function. I have a serial port, but I doubt I'll be able to get any software for it.I'll try swapping the hardware, if that doesn't work I'll send it off to someone more skilled than myself. A new board is over £500 so I don't fancy that option :)Thanks again
Homemade Aluminium Mortiser - Like a Festool Domino View Instructable »
I think a video is in order. I've tried to make fire with friction before, never managed it. I've got smoke but it never gets going properly.I'd love to see this in action :)
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