The rare earth magnets are also susceptible to corrosion and are usually plated for protection. If the sealing is penetrated then the magnet will just crumble away.Quote:
Originally Posted by jdurand
Printable View
The rare earth magnets are also susceptible to corrosion and are usually plated for protection. If the sealing is penetrated then the magnet will just crumble away.Quote:
Originally Posted by jdurand
Congratulations tonyfoale - your Treadmill Motor Modifications are the Homemade Tool of the Week!
A huge week around here, but still a clear winner. These modifications (and the broader point that treadmill motors are "built down to a price, not up to a standard") will see a lot of use in this community for future tool builds.
Some good picks from this week:
Adjustable Vise Stop by machining 4 all
Keg Slide by IntheGroove
Mini Scissors Lift by machining 4 all
Press Modifications by tmate3
Tape Measure Helper by orioncons36
Bobcat Snowblower Attachment by IntheGroove
TIG Welding Aid by Tuomas
Handgun Rest by tmate3
Track Cutter by tmate3
Anvil Hardy Bridge by Philip Davies
Pantograph by tmate3
Mini Lathe Variable Speed Feed Control by tmate3
Benchtop Press by fotojack
Router Table Fence by winkys workshop
Hand Drill Depth Stop by orioncons36
Shop Crane by tmate3
Milling Machine Chip and Coolant Guard by bouboulas
Welding Hammer by orioncons36
Drill Guide by RCTURKA
Drill Press Alignment Hack by tmate3
Adjustable Arm Phone Holder by morsa
tonyfoale - we've added your tool entry to our All Homemade Tool of the Week winners post. And, you'll be receiving a $25 online gift card, in your choice of Amazon, PayPal, or bitcoin. Please PM me your current email address and gift card choice and I'll get it sent over right away.
This is your 11th Homemade Tool of the Week win! Here are all of your winning tools:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/home-made-horizontal-milling-machine-55333#post81620"> <img src="/uploads/162905/homemade-horizontal-milling-machine-2.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/home-made-horizontal-milling-machine-55333#post81620">Horizontal Milling Machine</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/mill'>mill</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/grinding-machine-drum-brakes-55587#post82147"> <img src="/uploads/162657/homemade-drum-brake-grinder.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/grinding-machine-drum-brakes-55587#post82147">Drum Brake Grinder</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/grinder'>grinder</a>, <a href='https://www.homemadetools.net/tag/brake-drums'>brake drums</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/shock-dyno-shock-absorber-dynamometer-56478#post83755"> <img src="/uploads/163993/homemade-shock-absorber-dynamometer.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/shock-dyno-shock-absorber-dynamometer-56478#post83755">Shock Absorber Dynamometer</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/suspension'>suspension</a>, <a href='https://www.homemadetools.net/tag/measurement'>measurement</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/valve-holding-measuring-collet-58294#post87183"> <img src="/uploads/166061/homemade-valve-holding-collet.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/valve-holding-measuring-collet-58294#post87183">Valve Holding Collet</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/valve'>valve</a>, <a href='https://www.homemadetools.net/tag/holder'>holder</a>, <a href='https://www.homemadetools.net/tag/collet'>collet</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-laser-aligner"> <img src="/uploads/168729/homemade-laser-aligner.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-laser-aligner">Laser Aligner</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/alignment'>alignment</a>, <a href='https://www.homemadetools.net/tag/laser'>laser</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/double-edged-fly-cutter-63995#post100445"> <img src="/uploads/205514/homemade-double-edge-fly-cutter.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/double-edged-fly-cutter-63995#post100445">Double Edge Fly Cutter</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/flange'>flange</a>, <a href='https://www.homemadetools.net/tag/fly-cutter'>fly cutter</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/homemade-vertical-bandsaw-66678#post108045"> <img src="/uploads/211089/homemade-vertical-bandsaw-5.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/homemade-vertical-bandsaw-66678#post108045">Vertical Bandsaw</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/bandsaw'>bandsaw</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/diy-surface-grinder-67127#post109600"> <img src="/uploads/212251/homemade-surface-grinder-11.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/diy-surface-grinder-67127#post109600">Surface Grinder</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/grinder'>grinder</a>, <a href='https://www.homemadetools.net/tag/surface'>surface</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/radius-gauge-reverse-engineering-70673#post123621"> <img src="/uploads/219843/homemade-radius-gauge-3.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/radius-gauge-reverse-engineering-70673#post123621">Radius Gauge</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/gauge'>gauge</a>, <a href='https://www.homemadetools.net/tag/radius'>radius</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/making-motorcycle-chassis-what-tools-75470#post142830"> <img src="/uploads/226725/homemade-motorcycle-frame-fabrication.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/making-motorcycle-chassis-what-tools-75470#post142830">Motorcycle Frame Fabrication</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/motorcycle'>motorcycle</a>, <a href='https://www.homemadetools.net/tag/frame'>frame</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/treadmill-motors-my-modifications-83472#post173733"> <img src="/uploads/242690/homemade-treadmill-motor-modifications.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/treadmill-motors-my-modifications-83472#post173733">Treadmill Motor Modifications</a> <span> by <a href="https://www.homemadetools.net/builder/tonyfoale">tonyfoale</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/safety'>safety</a>, <a href='https://www.homemadetools.net/tag/modification'>modification</a>, <a href='https://www.homemadetools.net/tag/motor'>motor</a> </div> </div> </div> </div>
tony,
You're clearly a very clever possum, but one thing concerns me about the tread mill motor mods,....What does it do for cooling now that you've closed all it's windows?
This is discussed near the end of the video, and also in some previous comments. Closing it is only suitable for low load and low duty cycle applications like my T&C grinder.Quote:
Originally Posted by old kodger
Interesting post. It isn’t uncommon in industry to take a standard motor and replace the shaft (easy on an induction motor), this idea goes a bit further. Hopefully it will inspire people to come up with their own solutions.
On the issue of a magnet demagnitizing due to heat, that was a huge concern early in my career. Magnets hAve come a long way in the last four decades. If you are concerned it is best to reference the manufactures data for the motor in question. This especially if you are salvaging a high performance motor out of mystery machinery. The simple reality is that there are more advance magnets available these days with higher temp characteristics.
One more thing, somebody mentioned above the dangers associated with installing the rotor in a permanent magnet stator. Yes it is hazardous and even a very small motor can bite badly. Take care! Not only do you risk finger or worse damage, those magnets can easily damage the rotor windings.
Interesting, I've been researching propellant making methods and stripped treadmills are commonly used for ball milling the constituents together, more reliable motors would suit that use, not that I'm going to be doing that as I can buy my propellant ready made, a much safer option.