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Bumpers Vs Slimline Plates for Deadlift

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AvatarTerminator
I was deadlifting with bumpers last night and after my set a man of my recent acquaintance remarked that bumper plates made the lift harder than comp plates would.

I disagreed with him, on the grounds that the weight being further from the center of the bar, meant that the bar would flex more, making it easier off the floor, with bumpers being easier than comp plates.

He argued back that bumpers meant that the weight was further from the body meaning that the effort to lift it was greater. I have never considered this before.

So which is easier for deadlifts, bumper plates or slim line comp plates ?
Avatarbryce
You are correct, he is wrong. The bumpers mean you take full load later in the lift
MrSmall
The further the plates are from your body, the easier the lift will be, as you have more leverage in this position. I don't know if that's why bumpers are easier, I suppose so. Think about how to lift a wheelbarrow. Closest to the barrow or furthest away on the end of the handles?
AvatarAndyCoupe
Just bring your grip in so your hands are touching then.
AvatarCJR
The bumpers being further away from the body would increase the moment, but it's being completely offset by the bumpers on the other side of the bar. The distance from the body makes no difference in that respect. I therefore conclude that you are correct. Happy
AvatarJackRevans
CJR said:The bumpers being further away from the body would increase the moment, but it's being completely offset by the bumpers on the other side of the bar. The distance from the body makes no difference in that respect. I therefore conclude that you are correct. Happy


Exactly this
Avatarchaos
Post Edited: 08.05.2014 @ 11:28 AM by chaos
The distances involved (unless the bumpers are 2m wide) will make it negligible! But in theory you are correct
AvatarBigMacca
Post Edited: 08.05.2014 @ 12:09 PM by BigMacca
The further the weight is towards the end of the bar, the more the bar will flex and in turn make the lift easier as you won't have the full weight in your hands until the bar is further up your shin.

This does make a difference - Even on an elieko power bar (which is pretty stiff), there is a noticeable difference in whip between using even just standard plates and their super thin competition counter parts - Using bumpers will amplify this effect even more
Evis
Yeah the difference is fairly noticable if weights are high enough. Someone pulling raw sumo would probably benefit the most, as the heaviest point in that style tends to be right at the start of the lift.
AvatarSimeon
your friend misunderstands physics.
Avatarmilsy
Evis said:Yeah the difference is fairly noticable if weights are high enough. Someone pulling raw sumo would probably benefit the most, as the heaviest point in that style tends to be right at the start of the lift.


A while back we played around with sumo pulls from the floor with 50kg plates 2 inch off the end of the bar and it felt awesome to pull with and gradually inch the plates in bit by bit each session
Avatarrich_86
CJR said:The bumpers being further away from the body would increase the moment, but it's being completely offset by the bumpers on the other side of the bar. The distance from the body makes no difference in that respect. I therefore conclude that you are correct. Happy


Exactly, it is cancelled out. The only factor is the plate width, so the op is right.
AvatarPAGAN
Post Edited: 08.05.2014 @ 12:49 PM by PAGAN
How much weight can one get on a standard oly bar with the average set of bumper plates. With the strength shop riot plates I think I ran out of bar at 200k! Great value plates but f**k me they're fat.
AvatarTerminator
PAGAN said:How much weight can one get on a standard oly bar with the average set of bumper plates. With the strength shop riot plates I think I ran out of bar at 200k! Great value plates but f**k me they're fat.


Thanks guys. I knew I was right, but couldn't articulate my point across in a loud gym.

I can achieve 240 bar weight in bumpers. That's all the bumpers in the gym. Probably could squeeze another 15 and a spring collar at each end.
MrSmall
PAGAN said:How much weight can one get on a standard oly bar with the average set of bumper plates. With the strength shop riot plates I think I ran out of bar at 200k! Great value plates but f**k me they're fat.


If they are non-poverty/Crossfit bumpers, you can fit 320kg on, like with Eleiko or ZhangKong.

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