Made my own lift

Discussion in 'Gear & Accessories' started by RllwJoe, Nov 9, 2017.

  1. GatorGreg

    GatorGreg Honda Fanboy/LitiGator

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    Top notch! I think I would park my bike in a perpetual wheelie if I had one of those - maybe in the living room :D

     
  2. RllwJoe

    RllwJoe Insider

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    Well, heading into late fall here in Michigan it has been colder than normal so far. I've not ridden much the last month, and if this weather trend continues, I may take your advice!

    I envy you and your fellow warm-winter-climate residents this time of year.
     
  3. OOTV

    OOTV Insider

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    Don’t envy us too much, our cost of living is much higher, at least in California! I will say that it does make “winter projects” a lot harder to make happen, so easy to forget the project and go ride when the sun is shining. Usually I have to just force myself to get down to the garage and get things done, I know, first world problems! It took me a while to get my 5 Gen back into shape, some of it was sourcing parts, some of it family obligations and some of it the weather.

    Right now I have a short queue for some projects that will all benefit from the ABBA stand, 6 Gen header, front fork cleaning and oil replacement and steering head bearing upgrade/replacement, Ducati steering head bearing replacement, clutch throw out bearing and possibly a top end tear down. That latter depends how motivated I get.

    I’m sure you’ll find your new stand very useful.
     
  4. RllwJoe

    RllwJoe Insider

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    Update, and warning for anyone thinking of making something similar!

    The 1/2 inch 20 thread per inch threaded rod that I used for the lift, handled the weight fine. However, It did not survive being cycled up and down with the weight of the bike loaded on it after approximately 25 lifts. At that point the threads on the rod failed, and locked up/ cross threaded inside one or both of the nuts...... NOT GOOD !!!!! My bike was a foot off the ground, and I could not turn the rod in either direction.

    I figured out how to lower the bike using a heavy duty ratchet strap, and my Sawsall. Then it was time to look for another opton.

    I've come up with another mechanical means of powering the lift,....... I'll share more after some testing.
     
  5. unie01

    unie01 New Member

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    sub'd to this thread[​IMG]
     
  6. Allyance

    Allyance Insider

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  7. OOTV

    OOTV Insider

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  8. FJ12rydertoo

    FJ12rydertoo Member

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    You can buy hardened all thread that should work for you. Also keep the threads lubricated with anti-seize, and you might want to look at some kind of thrust washer to allow the nut to turn more easily.
     
  9. Diving Pete

    Diving Pete Member

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    Quick questions...

    1st. The threaded nuts you used to hold the lift in position. How are they anchored and why did you not use a threaded tube. This would then allow the weight to be positioned over more threads meaning it would be less likely to fail. If you were using only two nuts there's just not enough threads to allow 300kg to be safe.. Working on a 6-1 ratio for lifting will make it far safer.
    2nd. Any reason you didn't use 4 rollers opposed to each other?

    3rd. The ability to lock it off with a pin through a hole then allows the whole mechanism to be unloaded. Don't underestimate how useful this can be.
     
  10. RllwJoe

    RllwJoe Insider

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  11. RllwJoe

    RllwJoe Insider

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    Pete, Thanks for your input. To answer #1 the two nuts that I used were each double length (extra thread). I welded them in place to the dollie. And I used them because I had possession of them (zero cost). I made this whole stand using scrap metal and used parts from other items.
    #2 I did use 4 rollers just like the ABBA stand
    #3 I predrilled holes for a "lock off" pin, but have not felt that I needed to use that as of yet. However, I will keep your suggestion in mind.
     
    Last edited: Feb 23, 2018
  12. Diving Pete

    Diving Pete Member

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    Joe,

    as a FYI these are not cricitisms, I absolutely love the fact you have done this - I just dont want your bike ending on the floor with you underneath it...

    1. ok - for this design a threaded tube may be more desirable - lol. - take a look at the Eazy Riser images..

    2. The abba stand only uses 3 rollers, the Eazy rizer stand uses 4. The Eazy rizer also captures both ends of the threaded bar (which is hardened) in nylon locating plugs. This is also side mounted to (I think) minimize lateral loadings on the threaded rod & being nylon allow a little movement rather than putting it onto the threads.

    Please update us with how you go..
     
  13. RllwJoe

    RllwJoe Insider

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    Thanks Pete!

    The design of the Abba stand, and my copy, does have a 4th roller as noted in the attached photo. As a result all load on the lifting rod or hyd cylinder is vertical only, no lateral load.



    My threaded rod failed because of two reasons. First the rod was a generic non-hardened fine thread. Second, when I welded the two nuts in place, I could not space them perfectly. Thus, they were constantly in tension, and fighting each other. So much so, that I could not turn the rod by hand without the aid of a wrench even with no load of any kind.
     

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  14. Diving Pete

    Diving Pete Member

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    Yep - I didnt count the bottom one - its more of a locating roller than in the lifting mech...

    If you screw the 2 nuts onto the thread with a 1 inch steel tube between them you could then tack that together & that may suffice better..
     
  15. RllwJoe

    RllwJoe Insider

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    Thanks for your desire for my safety. Put your mind at ease ...... as far as lifting something that is not designed to be lifted, this is a piece of cake in my life. If you check my avatar, you will see the majority of my family busness' logo. And below is a photo of a recent project with some of the family posing in front.

    #2.png
     
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  16. Diving Pete

    Diving Pete Member

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    Ow that looks fun...
     
  17. RllwJoe

    RllwJoe Insider

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    O.K. I think that this is a solid solution for my needed mechanical lifting device.

    After the failed fine threaded rod, I began to look for an ACME screw and nut. The ACME screw itself is not expensive, however the cost of the additonal nut made it costly enough to compel me to continue to look for another option.

    Knowing that I had some old bumper mount style car jacks rusting away in a forgotten corner of our company building, I thought that a "step" jack from the 1970's cars (cars with solid steel bumpers) that I first began to drive would be a good solution. As I dug thru the junk piled in said corner I found this:
    Vintage Ball Screw Bumper Jack.jpg
    I'm guessing that it is from the late 50's or early 60's.

    The screw hidded inside the jack is what is called a "ball screw". The nut is....... you guessed it, a "ball nut". When I first saw it, I thought it was an ACME thread. The thread and nut were caked with dried up oil and dirt, so after removing the screw and nut combo I began to clean them in the parts washer. That's when I noticed that the thread is rounded instead of squared off, and the nut has a return tube for the balls to curculate around back to the other end of the nut. This design is something new to me. I have found that to purchase a replacement, the nut is extreamly expensive, while the screw itself isn't too bad.
    Here is a shot of the ball screw and ball nut added to my lift.
    Ball Screw.jpg
    Here is a shot compairing the two threads. Ball Screw Replacement.jpg The old thead count is 20 per inch. The new thread count is 5 per inch. The big advantage is that the lift rate is much faster. I will post a short video of the lift at work soon.
     
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  18. RllwJoe

    RllwJoe Insider

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    Here is the long awaited unveiling of the working lift!

    It's much faster than it was with the fine thread rod. The video is not very long, so it will not waste much of your time.

    Enjoy

     
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  19. OOTV

    OOTV Insider

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    Dude! That’s bad ass! Nice job!
     
  20. Diving Pete

    Diving Pete Member

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    So your 'Eazy lift' looks like it's working well. Well done.
     
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