Chief Delphi - 2016 Boulder weight issue

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Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- General Forum (http://www.chiefdelphi.com/forums/forumdisplay.php?f=16)

- - 2016 Boulder weight issue (http://www.chiefdelphi.com/forums/showthread.php?t=142213)

evanperryg

22-01-2016 23:00

Re: 2016 Boulder weight issue

Quote:

Originally Posted by FYRERobot5480 (Post 1527572)

We are wondering about the diameter of the balls, having only 1 ball, we can't compare weights, but the manual says the ball is 10" diameter, but ours is measuring as 9 5/8th.

Anyone else noticed this? We are wondering if it has to do with our altitude, (almost 5000 ft) and how competing at lower altitude could affect our shooter if the size changes this much.

We noticed this as well, and we're at 577ft so I'm sure that's not it :D . We haven't dimensioned the two additional balls we purchased, but the KOP ball definitely comes in at a little less than 10." We haven't massed any of them, but if the humidity has to do with it, the balls should equalize over time. Those of you who have posted ball weights, if you are able to provide your shop's temperatures and humidity, I'd like to start organizing some of this data more nicely.

Jcarbon

23-01-2016 13:36

Re: 2016 Boulder weight issue

When I massed our boulders today, they were quite consistent. We only have grey, FIRST branded balls from Andymark.

Original KOP boulder: 283.3g
Additional boulders from Andymark:
285.8g
286.6g
284.2g
285.5g

AllenGregoryIV

23-01-2016 13:38

Re: 2016 Boulder weight issue

Here are our weights. All AndyMark Boulders.

1 272.13 kick off ball
2 283.14
3 293.48
4 282.39
5 284.73

s_forbes

23-01-2016 21:03

Re: 2016 Boulder weight issue

I made a spreadsheet for the gray boulders listed in this thread here: https://docs.google.com/spreadsheets...it?usp=sharing

If anyone has more boulders to add, please do so!

Statistics so far:
Avg mass: 286.3 grams
Standard deviation: 4.72
Standard deviation (as percentage of total mass): 1.65%

D_Price

23-01-2016 21:05

Re: 2016 Boulder weight issue

Can't wait to see the spreadsheet in a little bit. +1

Quote:

Originally Posted by s_forbes (Post 1529153)

Pauline Tasci

24-01-2016 02:15

Re: 2016 Boulder weight issue

1 Attachment(s)

S All the boulders Code Orange has ordered have come in and here is the information we have gathered. We have 12 gopher balls, one KOP ball, and 10 andymark balls.

A=ball number
B= circumfrence
C= diameter
D= vendor
E= weight

Thanks!

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