Just today I realized that my bowling balls, the ones I have had for awhile do not have the weight they used to have. Since I have had a scale that I can accurately measure the weight of a ball(got one to verify the weights of balls I would purchase). The ones that have been on the racks in my bowling room/utility closet and the overflow rack in the hall closet are not the same weight they were. I am not talking about the couple of ounces you lose from drilling.  The balls I have had for awhile that were 16 pounds or right about when I got them are now coming in at 15lb 5 or 6 ounces. My white dot which is always in my 4 ball league bag unless I am bringing the 6 ball bag somewhere didn't lose as much as the others--it was bout at 16 pounds and now is 15lb 9 oz.

I know what you might be thinking.....maybe your scale is out of sorts..but no, this fall while I was recovering from my hip replacement surgery I bought a nib 16 pound visionary glowing amulet bowling ball...have started bowling again, but have not yet drilled that ball and it weighed in at 16 lb 2 oz. I never knew this was possible..the only thing I can relate to it was years ago ...lat 80's a guy in the league I was in grabbed a ball out of his garage and it gained weight and was about 17 pounds. Has anyone ever seen this happen(losing weight) , and any reasons that could be.
Now that I am 51 and don't have that much ball speed to begin with I don't mind them being lighter but I would like to know why that is just to understand it.

Brad

I have seen variance on my scale by positioning the ball in different orientations.  cg facing in/out, etc. 

I guess cg does matter....
sorry, i'll see my self out...

Just today I realized that my bowling balls, the ones I have had for awhile do not have the weight they used to have. Since I have had a scale that I can accurately measure the weight of a ball(got one to verify the weights of balls I would purchase). The ones that have been on the racks in my bowling room/utility closet and the overflow rack in the hall closet are not the same weight they were. I am not talking about the couple of ounces you lose from drilling.  The balls I have had for awhile that were 16 pounds or right about when I got them are now coming in at 15lb 5 or 6 ounces. My white dot which is always in my 4 ball league bag unless I am bringing the 6 ball bag somewhere didn't lose as much as the others--it was bout at 16 pounds and now is 15lb 9 oz.

I know what you might be thinking.....maybe your scale is out of sorts..but no, this fall while I was recovering from my hip replacement surgery I bought a nib 16 pound visionary glowing amulet bowling ball...have started bowling again, but have not yet drilled that ball and it weighed in at 16 lb 2 oz. I never knew this was possible..the only thing I can relate to it was years ago ...lat 80's a guy in the league I was in grabbed a ball out of his garage and it gained weight and was about 17 pounds. Has anyone ever seen this happen(losing weight) , and any reasons that could be.
Now that I am 51 and don't have that much ball speed to begin with I don't mind them being lighter but I would like to know why that is just to understand it.

Brad

Clearly, you just forgot to feed them!

The average weight change seems to be approx 8 oz .....I am seeing this in my reactives, my 2 plastics wd and clear wolf, and my 1960's rubber ball I bought nib a few years ago.  However my jpf black axe which is true urethane is holding at 15 lb 12 oz ....close to where It was when I bought it and my desert ops which is 80% urethane ...that one changed a little bit more than the axe but not as much as the rest.  Just to make sure it wasnt my scale I reweighed my nib undrilled visionary glowing amulet(hard urethane) again, which was a recent aquire(november) and that still comes in at 16 lb 2 oz ...quite odd.

Brad