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  1. #1
    Registered User paulinkansas's Avatar
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    Increasing plate capacity to spin lock DB's?

    My spin lock DB's are maxed out with 3 10 pound plates on each side. I'm a cheapskate and don't want to purchase 4 25 pound plates. My idea is to cut the threaded portion of each bar near the grip and fill it in with a Mig to make the threaded portion longer to accommodate one more plate on each side. Does this seem feasible? Would you use GMAW or FCAW?




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  2. #2
    Multi-Platinum User radrd's Avatar
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    I would suck it up and buy some Ironmasters or PowerBlocks or go to a commercial gym.
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  3. #3
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    Damn man, just buy some more plates, or a pair of longer rods
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  4. #4
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    Originally Posted by paulinkansas View Post
    My idea is to cut the threaded portion of each bar near the grip and fill it in with a Mig to make the threaded portion longer
    No, just no.
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  5. #5
    Registered User air2fakie's Avatar
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    You might be safer designing a slimlock or other type of plug that goes on the very end of the handle to replace the current spinlock. It looks like there'd be enough thread left over to accommodate some sort of custom lock if you added a 4th plate.

    If you have other handles and 10 lb plates, and don't need this one to be adjustable, you can just weld the extra plate in place.
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  6. #6
    weigh, not measure mtnmama's Avatar
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    i agree - buy something - power blocks are pretty good - maybe you can find a used set?
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  7. #7
    Workin' Stabilizers Skidmarx's Avatar
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    I don't see any problems with this, as long as you know how to weld. Post some after pics.
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  8. #8
    Registered User vristang's Avatar
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    To each his own, but you can find LONG dumbbells all day on Amazon. Pretty cheap too.
    I have a set for dumbbell rows. They are pretty decent.

    But if you do this kind of fab work on the regular, I get it…
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  9. #9
    Kiwi Battler BenMcLeodNZ's Avatar
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    I'm still waiting for him to do this in spite of us and post pictures
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  10. #10
    Registered User paulinkansas's Avatar
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    Originally Posted by BenMcLeodNZ View Post
    I'm still waiting for him to do this in spite of us and post pictures
    Just wait. I need 65 lb dumb bells in December with my rate of progression. But thank you for your concerns.
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  11. #11
    Registered User vristang's Avatar
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    I'd like to change my response, lol
    If you are asking anything about the welding process, then just buy something... They are cheap...
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  12. #12
    Registered User paulinkansas's Avatar
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    Originally Posted by BenMcLeodNZ View Post
    I'm still waiting for him to do this in spite of us and post pictures
    Here is a spinlock I fabricated. It's a nut brazed onto a washer, I used a mig for the brazing process. Removed all the zinc first. Going to use a different pitch threaded extension on my existing spinlock handles. I like the look of silicon bronze over ER70-S steel wire out of a mig welder. The brazing material reminds me of my gold teefs.



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  13. #13
    Registered User paulinkansas's Avatar
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    I welded on a 1.25 inch threaded extension to the end of my spin lock dumb bell handles. I can still use the spinlocks that came with the handles and use the spinlock from there ^ to thread on to the extension. The extension allows me to put one more 10 pound plate on each end of the handle. Thumbs up or thumbs down? What's your vote?



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  14. #14
    Kiwi Battler BenMcLeodNZ's Avatar
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    The madman actually done it!
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  15. #15
    Han shot first! TolerantLactose's Avatar
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    Dramatization of Paul's first workout with the modded dumbbell handles.

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  16. #16
    Multi-Platinum User radrd's Avatar
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    Originally Posted by paulinkansas View Post
    I welded on a 1.25 inch threaded extension to the end of my spin lock dumb bell handles. I can still use the spinlocks that came with the handles and use the spinlock from there ^ to thread on to the extension. The extension allows me to put one more 10 pound plate on each end of the handle. Thumbs up or thumbs down? What's your vote?



    Attachment 9367993
    Thumbs up as long as it works and stands up to abuse. Way to DIY!
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  17. #17
    Registered User Lifts4longevity's Avatar
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    Years ago I was really scrapping to get by and needed longer DB handles. Someone gave me 2 pairs of old rusty Weider DB handles, one pair was spinlock design, the other was that smooth design that utilizes those silly slip on collars with the threaded T-handle which tightens against the db handle.

    I cut the smooth handles down to approx 10" length, then tig welded 3" of the spinlock handles to the ends of the smooth handles for a total of about 16-1/2" dumbbell length. I welded a 2-3/4" OD x 3/16" thick washer to the DB shaft directly (rested against the factory inner collars) so there is no chance of the inner collars breaking loose on the db handle.

    I've loaded these handles to 75 and 85lbs quite a few times with 1" plates, and I even built these as an odd pair of 40lb DBs years back by using tubing sleeve adapters and four 10lb Oly. flanged/deep dish plates. Sounds dumb, but they worked well and were no less safe than any other spinlock DB. Poor folks got poor ways....



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