I use The Axe scales. I don't think they are available anymore. They have a dual display that allows the judge and the participant to see the result. Down side is they are sensitive to vibration. We had to use a heavy table just for the scales. The folding tables were driving the judges crazy since everyone leans on the table.
We find that a damping pad underneath (e.g., neoprene mouse pad) helps to stabilize in the presence of environmental vibrations, although it is probably no solution for a scale on a folding table.SirStorm wrote:Down side is they are sensitive to vibration.
http://www.oldwillknottscales.com/my-we ... black.html" target="_blank
This scale has a mode that will only display to 0.1 precision. I think it will be perfect for what we are trying to do.
I also purchased a 5oz calibration weight basically to show anyone who asks that our scale displays exactly 5oz when the calibrated weight is used. Mainly, I wanted this in case somebody complained that our scales were not accurate, we could show them.
Our inspection and race is this weekend, I'll post how well it turned out.
One more - buy two or more of the same model.
Get a 5oz calibration weight
Get the recommended calibration weight for that model scale (my two are 500g).
Put one scale at the Weigh-In, put another at The Pit.
- Site Admin
- Posts: 4668
- Joined: Fri Jun 20, 2003 12:46 am
- Location: Highlands Ranch, CO
These are not actually calibration weights. You would have to check your digital scale's owner's manual for the appropriate weight need to recalibrate the scale. The 5 ounce weights are more to show parents that the scale is weighing properly. If it isn't, then you have to grab the calibration weight for the scale and recal.rpcarpe wrote:Get a 5oz calibration weight
Awana Grand Prix and Pinewood Derby racing - Where a child, an adult and a small block of wood combine for a lot of fun and memories.
- Master Pine Head
- Posts: 381
- Joined: Sun Dec 30, 2012 5:24 pm
- Location: DFW Metroplex, TX
Check out Amazon.com for more information.
We actually had 3 scales for check-in night. The two new ones we purchased were used as "official" scales. We also had 2 "go / no-go" inspection boxes purchased from Maximum Velocity. This allowed us to have 2 inspection lines. This speeded up inspection times greatly. The 3rd scale was over at the "repair" station so over weight cars could check their work quickly without having to return to inspection line to re-weigh.
I was the "bottle neck" at the end of the 2 inspection lines where I found each racer in the db, took their picture and marked them as "passed inspection" in the software. We used the inspection sheets that GPRM prints out for you. This worked really well too.
We checked in about 75 cars in less than an hour. It went really well and everyone thought this year was the best / fastest inspection we've ever had.
If you're just looking to get people through the line faster, we've had great success having four scales. Two at the pit table for pre-check in weight adjustments, and then two at the official check-in station. I also created some custom go/no-go boxes out of 3/4" plywood. We use a wood track that was donated to us, and it mimics the dimensions exactly, as well as making sure the car fits under the timer at the end of the track. It rolls in one side and if it doesn't stop, it's good dimensionally, which also helps speed up check-in. Beyond that, we have a time-limit for check-in. It lasts 30-45 minutes, depending on how many people we have participating. As long as they are in line for one final check-in before that 30-45 minutes is up, they're good to go.
- Stan Pope
- Pine Head Legend
- Posts: 6888
- Joined: Sat Jul 05, 2003 7:01 pm
- Location: Morton, Illinois
Check these ahead of time if you are using 0.01 oz scales. Some "usual sources" quote their 5 ounce weights as only accurate to +/-0.04 oz. At least they did last time I looked a few years ago.TXDerbyDad wrote: I also have a 5 oz test weight.
"If it's not for the boys, it's for the birds!"