Tension Calibration

[Anonymous]

Hi,

I recently purchased a Silent Partner Stringing Machine and am trying check the calibration, because I suspect it to be a little less than the setting indicates.

I have a Spring Tension Calibrator, but I am having problems using it. I have made several unsuccessful attempts to tie a string to either end and tension it. Most of the time, my knot slips. I finally used my flying clamps and the held, but at 55lbs. the calibrator is only registering 40lbs.

This seems a little off to me. Could it be that the weight of the flying clamps was causing a poor reading? Also, would I have more success with the string if I used a synthetic to do the calibration (I've been using some leftover Kevlar pieces)?

Also, I've searched all over the web for some instructions on using the calibrator. The most I get is tie a string to both ends, tie to a mounting post, apply the brake, and
tension. Any hints and/or tips in this area would be greatly appreciated.

By the way, I've already strung my first racquet with the machine and the string bed seems fine to me, but this is the first time I've ever strung a racquet, so I don't really know.

Thanks in advance!

[Anonymous]

Good question, in theory, a callibrator was made for a fixed clamp machine. I also own a silent partner machine, and the tension is right on every single time. Anyways, here's how to use your callibrator on your machine. I'd use a synthetic gut (or nylon) string instead of kevlar, because kevlar isn't a very stretchy string by any means. Besides, you want to test the tension on something you'll be using a lot of. Mount a racquet on your stringing machine. On the end that has the middle of the frame (some frames its top, others are bottom) thread the string through one of the middle holes, and in turn, through the other. You should have two strings at this end now. Use your flying clamp and clamp these two strings together (do it securely). Now, tension the other end of the callibrator. it should give you a pretty accurate reading, but also bear this in mind. Callibrators are spring operated, so you're really testing your accuracy with a spring.

[Anonymous]

Where can I buy a string tension calibrator?

[Anonymous]

Where can I buy a string tension calibrator?

ats sports sells Gamma calibrators online for about 26 US dollars

[Anonymous]

Where can I buy a string tension calibrator?


Besides ats, you can go to eagnas (theirs is cheaper) and there are a couple other online places just type "string tension calibrator" into a yahoo search and you will find them.

[Anonymous]

In order to tie a knot for the calibrator, I use a string about 3 feet in length. I thread one end of the string through the hole. Keep pulling until I get approximately equal distance from each end of the string. Fold the 2 ends together so that the 2 pieces of string are next to each other. Use the 2 strings as one and tie an over-under-out/through knot. I try to draw a picture below:

step 1:
------------------------------- (string)
hole of the calibrator O
------------------------------- (string)

step 2:
-------------\ / ----------------------- (string)
hole of the calibrator O KNOT
------------- / \ ------------------------ (string)