Which swingweight technology is most accurate?
From time to time, I get an E-mail saying something like “Hey, I just bought your electronic swingweight scale and it’s OFF” . My response is always “COMPARED TO WHAT?”. When we get to the bottom of it, some guys are comparing the digital readings to older mechanical scales, or clubs they had measured and “know” they are a given swingweight. Sometimes, they just need a little coaching on how to use our scale.
I can say without question, ALL mechanical scales have built in errors (mechanical friction, leveling issues, calibration of the printed scale, operator error, etc…). Other digital scales still use a leveling process and mechanical fulcrum. Those systems are better, but can still have errors. The price of a swingweight scale does not determine it’s accuracy, it’s technology does.
What makes our Pro-Touch scale unique and better? There are no moving parts. No leveling errors. We need 3 readings. The weight in grams at the grip end, the weight at any point along the shaft and the distance between those two measurements. That’s it. From there, we use basic lever math and some middle school algebra to find the balance point and swingweight of any golf club. If the 2 load cells are reading accurately, and the known distance between the measurement points has not changed, then the swingweight reading is as accurate as possible.
Okay, what if you don’t have a 500 gram calibration weight, but want to know if the 2 load cells are reading accurately? A quick way to check for accuracy is to measure any object (like a can of soup) on both sides of the scale. Both load cells should read basically the same weight (within 1 gram). If they are not equal, get a 500 gram calibration weight (sold on Ebay or Amazon) and go through the built in calibration process.
I hope this blog post explains how simple, unique and accurate our swingweight method is.
Patent Pending…