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Traction force

Traction force

Hello!

I’ve been thinking lately about traction force and how it is the underlying principle behind extenders. This traction force is usually measured in grams. Most extenders are spring-loaded and the extender I use encourages you to add small rods (0.5cm) to increase the tension and sooner or later you will start to compress the springs. I started to compress the springs once I was at a 19cm stretch. The extender I use does not have markings indicating the tension, all I know is that the maximum compression of the springs is equivalent to 1,500 grams.

What I’m curious about is if these 1,500, 2,000, 2,500 gram etc spring-loaded extenders take the none-compression traction force into account? I’m not so sure if they do. For example, as I said I’m stretching at 19cm and the springs are now lightly compressing because of that stretch. However, at 18.5cm the springs do not compress at all. So how much is that traction force? The non-spring-compressed traction force. Basically, how much is the traction force of the extender pulling my unit to a length of 18.5cm WITHOUT compressing the springs? Does anyone really have a formula to estimate how much that traction force would be?

Say I increase the stretch and I’m now compressing the springs 50%, so around 750 grams, that traction force would be added to the non-spring-compressed traction force, so ‘x’ grams + 750 grams. With this in mind I think it is possible that I’ve been stretching way too far.

If someone grabs behind their glans and pulls outwards, how much traction force is that? Has anyone worked out a formula reliant on BPFSL, BPEL or NBPEL?

This is a table created by a member of the now defunct AndroPenis forum, but I doubt how accurate it is:

TRACTION FORCE:
600 grams (1.3 pds) = 4cm less than erect length
800 grams (1.8 pds) = same as erect length
1000 grams (2.2 pds) = 2cm more than erect length
1200 grams (2.6 pds) = 4cm more than erect length
1500 grams (3.3 pds) = 6cm more than erect length

Any thoughts?


07/10/14 - 6.5" BPEL - 5.5" MsEG

29/01/15 - 7" BPEL - 5.5" MsEG

12/10/17 - 7.4" BPEL - 5.6" MsEG

I don’t have a great formula, but just looking at that traction force table at the end of your post: I have a homemade extender that exerts 4lbs of tension/traction force and it pulls me no more than 1cm more than my erect length. I would say that there isn’t a formula because everyone’s BPEL to BPSFL ratio is totally different (and may relate to their tissue composition - more/less elastin, etc).


START: 05/26/2014: BPEL=14 cm (5.51 in), MSEG = 13.3 cm (5.25 in)

LAST MEASURED: 11/17/2014: BPEL=15.3 cm (6.02 in), MSEG = not measured...yet

ULTIMATE GOAL: BPEL=17.8cm (7 in), MSEG = 14.6cm (5.75 in)

I agree there are way to many variables to make a chart like that and apply it to more than one person. A grower and a shower of the same erect length would be wildly different tensions.

If the springs are only capable of 1500 grams to full compression then in theory, the amount of force to slightly compress the springs (overcome the traction of the device) is going to be quite small. In practice, even small changes in body position will create much greater fluctuations in force than that so I don’t think it is practical to factor in that level of precision.


Keep an open mind and a closed wallet... unless it\'s open to making a donation!

Originally Posted by cantlook
I agree there are way to many variables to make a chart like that and apply it to more than one person. A grower and a shower of the same erect length would be wildly different tensions.

If the springs are only capable of 1500 grams to full compression then in theory, the amount of force to slightly compress the springs (overcome the traction of the device) is going to be quite small. In practice, even small changes in body position will create much greater fluctuations in force than that so I don’t think it is practical to factor in that level of precision.

I agree with you here. Would like to make a few extra points.

Firstly the springs in these extenders are not accurate. To check out the actual spring tension against each of the notches on the bar put the extender on a set of those digital kitchen scales and push down to you reach the notches one at a time. That will give you a better idea of the actual traction force.

Secondly when you mount your penis in an extender the traction force varies over time because of stress relaxation. After a few minutes your penis stretches a bit and the tension decreases. Read Rootsnatty’s posts on stress relaxation.

My experience with extenders is that spring based extenders are great for newbies in that you can gradually build up tension and stretch time until your penis is conditioned and you get to feel what is OK so you are on your way without injuries.

However once you get to that position I found the non spring based extenders such as a Leluv slider (there are other brands that look to be the same eg Miracle) are easier to fit and adjust especially to allow for stress relaxation. You can even make your own as Rootsnatty did.

Thanks for the replies guys.

My extender doesn’t have markings indictating the traction force but I just tested the extender on some weighing scales and the ‘1,500 gram’ springs are actually 2,500 grams (excluding weight of extender) at full compression. Recently I’ve been fully compressing the springs whilst wearing the extender at a stretch of 20.2cm. So for a week I’ve been wearing the extender with a traction force of atleast 2,500 grams PLUS the traction force required to compress the springs in the first place? No wonder I’ve encountered injuries. What the hell were Andropenis thinking mislabeling their springs?!


07/10/14 - 6.5" BPEL - 5.5" MsEG

29/01/15 - 7" BPEL - 5.5" MsEG

12/10/17 - 7.4" BPEL - 5.6" MsEG


Last edited by K_F_H : 02-05-2015 at .
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