Spring force

Although the booklet of the penis extender describes the meaning of the rings on the cylindrical pistons but I was curious how much force I can really produce with the penis extender. From this point on I will use N (Newton) as the unit for FORCE not gram because gram is the unit for WEIGHT. The penis extender clearly pulls on the penis with a certain force. How much force it is shows following test. Everybody can repeat this test at home in case you already have a penis extender.

 

NOTE:   1N = 1kg * 1m/s2

Example: One liter water (1 kg) standing on the ground will apply a force of 9.81N. The formula for that is:  1kg * 9.81 m/s2 (Earth Gravity) = 9.81 N


Test equipment
Figure 1: The base part of the extender, a measure cup and a 1.5l PET bottle is needed

For the force test three items are necessary: A measure cup, a 1.5l PET plastic bottle and the standard base of the extender. The first step is to screw the left handed screw tight to the plastic frame so it can’t fall sideways anymore. After that I filled the bottle of water with 100ml water and place it on top of the spring-loaded piston. I repeated this procedure until the piston edge had met the first ring.

Note: The 1.5l PET bottle weights 50gram. (100ml equals 100g)

400ml
Figure 2: 350ml = 350gram + 50gram bottle = 0.4kg = 3.9N (0.4kg * 9.81 m/s2)

600ml
Figure 3: 550ml = 550gram + 50gram bottle = 5.9N

800ml
Figure 4: 750ml = 7.8N

Conclusion

After this test I can finally say what those lines on the pistons mean. The spring load of one piston has a range from 0 to 7.8N. Both pistons together equal a force for max 15.6N. Compression beyond the last ring will cause infinitely force as the metal of the piston meets the metal of the compressed spring. The user should avoid that stage in any case.