DIY Push/Pull Sled - Magnetic Resistance
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- เผยแพร่เมื่อ 2 ต.ค. 2024
- Here's a video on my prototype for a DIY Push/Pull Resistance Sled. It's built with a scooter 250-watt motor and MY1020 800 watt brushed motor. This thing really has a lot of resistance when you start to put some force on it. Parts shown are go-kart axles, go-kart wheels/tires, two of the motors mentioned, and some scrap 2x4 wood. Let me know what you think and feel free to ask questions. My whole family loves using this thing and I'm looking forward to building a new better sled.
Want to save money? Like HIT Training? Find a kid's small plastic battery-operated car or Jeep. I'm describing the kind that a 5-year-old child would sit inside and slowly move around a driveway. (We found one that was neglected and stopped working.) I used to push my daughter around in it for 20-yard repeats, and the motor provided so much resistance that it was like performing sprints on an Assault bike! My daughter loved it, and I did not! Total gasser!
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I really hope people start upload their builds and start making this equipment cheaper for all!
Thanks a lot!
I'd like the axels to be underneath the wood members. I don't want the entire weight of the sled to depend on the screws. Have the entire weight coming down on the axels and the screws just preventing them from coming out of alignment.
@mangravy2000 yea man go for it. Very little weight on the axles though probably 15 lbs worth of wood. Also I used lag bolts not screws. We put 4 kids on it and it didn't budge.
Hey mate this is very cool
Where is the best sources to get a motor? Wanting to make one of these
@@liameverson8915 eBay
Wonderful! Would love to get the plans for the rheostat addition. For the mechanically ignorant, when you say “attach the second motor” do you mean the chain? How quick is that process?
I’m going to attach two tow points either end of fast back/forth. Thank you for this vid!!
I actually scrapped the rheostat addition and will just adjust the gearing ratio to get my desired resistance. When I referenced connecting the motor I'm talking about the positive/negative to the motor. Disconnecting those two wires will reduce resistance of the motor. Hoping to have a new video out soon with version 2.0 but other projects gave taken precedence.
Look forward to an update… I’m going to try with old washing machine motor wired as a DC generator 🤞
Found your video looking for information on resistance motors. An idea I had for building a sled is using the friction wheel off an exercise bicycle. I figure thrift shops or CL probably have unwanted exercise bikes with a friction knob. Set up the wheel similar to your set up but twist a knob for friction resistance.
Did you manage this? I have an old exercise bike and also had this idea!
Very nice build! Are you still planning to post links to the parts? It would be really helpful since the parts are expensive and it's sometimes difficult to tell which parts are compatible.
Here's pretty much what I used. You don't have to do double axle like mine. You can get away with single axle and fine a way to run two motors to the one axle.
www.ebay.com/itm/165821211577?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=sduophkmrge&sssrc=4429486&ssuid=TaE8pBJTTz6&var=&widget_ver=artemis&media=COPY
You may need a different sprocket to match the axle size. Here's the motor I used.
www.ebay.com/itm/195888790777?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=bg0vvtpxt3q&sssrc=4429486&ssuid=TaE8pBJTTz6&var=&widget_ver=artemis&media=COPY
This is brilliant, definitely going to give this a go. Thanks for sharing!
this is awesome and exactly what i have been researching to build. not a mechanic, so i don't understand the motors or why they resist as you push harder? what type / kind of motors would work? Will be buying everything from scratch so want to get it right 1st time.
On another note, how loud is it?
I would probably use the my1020 1000watt motor (brushed motor, not brushless). You can definitely find good explanations online about why the force increases with the increased speed of the motor, but it has to do with increased magnetic forces. Let me know when you finish your build!
thank you. @@chuckwillyduece
Looks awesome!!
Awesome. I need one!! I'm definitely going to build one.
Any updates since this original video??
Nothing final yet but I've got version 2.0 in the works. Less expensive than having double axles.
Have you compared to commercial magnetic sleds?
I haven't yet! I think with adjustments to motors/gearing I can simulate almost any commercial sled feel. Hopefully soon I'll get the chance to test out a M4 Tank or something like that.
This is great. Gonna try this as well!
How are the leads wired? Are they just looped? Red to black?
Yes
Fascinating! Do you plan to open source the plans?
There's really not much to the plans. An eBay go-kart axle and electric motor. That's about it!
Frigging awesome!
Thanks!! Version 2.0 in the works now...
@@chuckwillyduece I was looking at tank mx1 and thought the had magnets and dynamos. Not just electric motors. You saved me a bunch of time and calculations and general mind bending. Thanks a bunch from Germany!
@bastipear2864 Yes! That's where I started as well. Next one I will use only one axle and tinker more with the gearing to achieve the resistance I'd like.
are you connecting the motors to a battery source?
There's no way you watched the video..
i did. one set of leads is going toward under the wood frame.
all im asking is if the leads are tied together to connect and disconnect the motors. your video doesnt talk about connecting the motors actually means.
@@nl5h the motor's positive and negative are connected together.
ok thats what i kept seeing but was a little surprised. thanks!
@nl5h yea it's a bit weird. I'm not exactly an expert on why the motor will fight back on you when you tie them together, but I know one major brand of sled was doing this exact thing so that's where I got the idea. Let me know if you end up building one!