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Old 05-02-2012, 02:37 PM   #1
Daniel Johnson
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help w/ barbell diameter - new plates won't fit!

Ok, so I know that you get what you pay for, but I've been building up a home gym on the cheap, and have run into a little problem.

I started with a 300lb. set from Marcy that was a little over a hundred bucks and figured that 300 lb. would last me a while. The barbell is 15 lb.

I just recently decided to upgrade by buying a pair of 15# and 35# bumper plates - Troy VTX. I got the plates shipped, and they don't fit on the bar! I used a little sandpaper on the bar and got the 15# plates to fit, but the 35# plates still get stuck on one side.

I was planning to upgrade the barbell next, but my main concern is if the plates are ok... or if I need to return them? If I get a new barbell, will they fit ok, or are they defective?

So, I measured everything... the original Marcy barbell is about 50mm, with some wobbliness going up to about 51mm in places. The original March plates are about 56mm in diameter and slide on with ease. The new VTX 15# plates are about 52mm and are a tight fit. The new VTX 35# are just a hair under 52mm... maybe 51.8mm or so. I don't know why, but they seem to be just a bit skinnier.

From what I've read, the standard olympic barbell is 50mm... so I'm worried that these plates are the problem and not the barbell.

So, do I need to return the plates? or do I just need to get a new barbell?

Your help will be greatly appreciated,

Thanks

ps. I tried to find manufacturers specs on these items but couldn't find it anywhere.
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Old 05-02-2012, 04:43 PM   #2
Tim Nakashima
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Re: help w/ barbell diameter - new plates won't fit!

The problem is your cheap bar.
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Old 05-02-2012, 05:20 PM   #3
Bryan Rowland
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Re: help w/ barbell diameter - new plates won't fit!

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Originally Posted by Tim Nakashima View Post
The problem is your cheap bar.
What he said. I have VTX bumpers and they are just fine with my barbell.
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Old 05-02-2012, 06:32 PM   #4
Dan Thomas
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Re: help w/ barbell diameter - new plates won't fit!

Standard barbell is 50mm. ID of the plates would be slightly larger, like your VTX. The problem, as stated above, is your bar.
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Old 05-02-2012, 08:53 PM   #5
Daniel Johnson
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Re: help w/ barbell diameter - new plates won't fit!

Cool. Thanks, y'all. I had a feeling that was the problem.

I guess I'll have to buy that new bar sooner than expected, since I really want to throw the bumpers on and start tossing them around.

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Old 05-02-2012, 10:38 PM   #6
Steven Thunander
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Re: help w/ barbell diameter - new plates won't fit!

You need a new barbell...

If you got the set I think you have, it wasn't designed for iron Olympic plates, nontheless bumpers.
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Old 05-03-2012, 12:05 AM   #7
Lincoln Brigham
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Re: help w/ barbell diameter - new plates won't fit!

Quote:
Originally Posted by Daniel Johnson;1057529...
The barbell is 15 lb.

... the original Marcy barbell is about 50mm, with some wobbliness going up to about 51mm in places.
There's the problem. I.W.F. specs are that the barbell sleeve should be 50mm. Not 51.

The barbell weight is supposed to be 20 kilos (44.1 lbs.)

U.S. barbell vendors aren't big on accuracy and aren't too happy that they have to put up with that "**** Eurotrash metric crap" so they only give lip service to the specs. 45 lbs. is close enough to 20 kilos and 2 inches is close enough to 50mm. Until it isn't.
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Old 05-03-2012, 06:52 AM   #8
Dan Thomas
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Re: help w/ barbell diameter - new plates won't fit!

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Originally Posted by Lincoln Brigham View Post
There's the problem. I.W.F. specs are that the barbell sleeve should be 50mm. Not 51.

The barbell weight is supposed to be 20 kilos (44.1 lbs.)

U.S. barbell vendors aren't big on accuracy and aren't too happy that they have to put up with that "**** Eurotrash metric crap" so they only give lip service to the specs. 45 lbs. is close enough to 20 kilos and 2 inches is close enough to 50mm. Until it isn't.
Rogue's bars are 50mm.
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Old 05-04-2012, 10:34 AM   #9
David Allen Rogers
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Re: help w/ barbell diameter - new plates won't fit!

Quote:
Originally Posted by Lincoln Brigham View Post
U.S. barbell vendors aren't big on accuracy and aren't too happy that they have to put up with that "**** Eurotrash metric crap" so they only give lip service to the specs. 45 lbs. is close enough to 20 kilos and 2 inches is close enough to 50mm. Until it isn't.
I know you said "vendors" and not specifically manufacturers but I think it is important to make it clear that US manufacturers of bars make some very high quality products. Every bar that I have seen that is loose with the standards has been made in China.
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Old 05-04-2012, 02:45 PM   #10
Jared Ashley
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Re: help w/ barbell diameter - new plates won't fit!

Definately the barbell is crap.

Hell, I bought a cheap 300 lb set of plates + bar, and simultaneously a rogue bar and a 160 lb bumper set. I figured 460 is more than I'll be able to lift in a very long time if ever and that way I'd have a 2nd bar if I needed it for a WOD or whatever.

Everything fits on the rogue bar just fine.

The cheap bar, on the other hand, has one side that's bigger than the other, and cannot accept some of the plates. THIS INCLUDES SOME OF THE PLATES THAT IT CAME WITH!

I thought about returning the set, but since everything goes on the rogue bar I decided it wasn't worth the effort... I never actually use the 2nd bar anyway.
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