Calibrating Klippermate

[SW Stringer]

How come auto mechanics often have the worst cars? Your personal use does matter, or you wouldn't have bought a stringer and figured it out. Lasdj, thanks again for the thread!

I got my calibrator today. Some measurements, actual vs kmates:
64.6 70
59.1 65
54.5 60
49.8 55
45.4 50
40.7 45
36.1 40

I would say that generally everything done on the machine was just under 5 lbs light. Again, nothing against the Klippermate, just nice to know that I have been running poly at 45.4 reference tension, although my racquet recommends 55-60, and I dropped the range 10%. Oops, make that almost 20%. Trivial stuff, since everything is relative and I (and my friends) will use the same machine forever...

Good work there TenniseaWilliams. I plugged your data into Excel's linear regression function and got: y = 0.93857 * x - 1.59286 ; where y is the actual tension, x is the reference tension. So for someone who insisted upon a "calibrated" tension, just plug in for y and solve for x - voila! However, to be positively anal about the analysis, you'd need to develop the same sort of chart for the digital scale using "certified weights" as mentioned in a previous post.

 

[saturn]

At least the Klippermate is consistent between their own machines. It's not like one machine is too high, and another machine is too low. Maybe they did this, like I said before, to match spring lock tensioners ie. Ektalon/Prince which were the standard 25 years ago.

 

[Ronny]

do dropweights need calibrating?

 

[saturn]

Yes if you want to be sure the bar is labeled correctly.

 

[YULitle]

Yes, just calibrate it once and that should be all. At least, for a few lifetimes.