Do-it-yourself Digital Swingweight Scale
Tutelman -- May 9, 2015
swingweight scale market is going digital. There are a bunch of digital
swingweight scales on the market today. They have a couple of things in
common. They all seem to use electronic innards made by GolfMechanix,
and they all seem to be priced at $330-$350. You can get a less
expensive swingweight balance with a sliding weight for $50-$150; they
are almost as accurate as digital, but slower and harder to read.
you can make your own digital swingweight scale.
Sexsmith and I had an email dialogue last Fall about digital
swingweight and MOI measurement, which resulted in our cooperatively
designing and building several digital swingweight instruments. Between
have built five different ones so far. It was easier than we expected.
One of our
models is certainly within the capability of most clubmakers -- and has
a material cost under $50. Some of the construction requires a drill
press, a fairly common tool in most clubmakers' shops. A circular saw
with a carbide blade is also handy. Other than that, you probably have
and use the tools required for the job.
the way, any picture with a blue or purple border around it serves as a
"thumbnail"; it can be clicked on to get a larger version of the
Here is the story
on building and using your own DIY digital swingweight scale.
||We'll start with
how to calibrate
the swingweight scale. If you know how it is going to be used, it makes
some of the construction details easier to understand.
|| Building the arm,
which is where the dimensions are critical. Get this right, and the
instrument will be accurate. Also some words about the other working component of the system, a digital gram scale.
||Building the base,
plus some alternative designs
for the base, one wooden and one aluminum. The base is a lot less critical than the arm. As long as
everything fits and nothing binds, it will work fine.
||Data and details, including:
DisclaimerY'know, I hate to have to do this, but our current litigious culture seems to make it an essential prudence.
plans are not guaranteed to work for you. They worked for me, and I
fully expect they would work for anybody who executes them competently.
But I am not responsible if they don't. Nor am I responsible if you
damage some tool, or even yourself, while trying to build a digital
swingweight scale. Nor am I responsible for the consequences of bad
swingweight readings from your scale.
I fully intend to help with tech support, or even moral support, if you run into trouble. But I am under no obligation to do so.
Bottom line: Don't sic your lawyer on me if your project does not work out.
Last modified - May 19, 2015