Gaining volume with Kyrpa

Hi

All super interesting stuff - have just digested all of that! Very glad you shared those details on graphs you’ve made, makes it very clear. So I think I’m going to try out the same conditioning and workout experiments, will report what I find. Thanks for taking all the time for going over that, really appreciated.

I got this machine and cant heat the shaft even at 2.2W/cm2 for 20 min, would it be dangerous(what are the risks of using higher w/cm2) if i use more power? maybe it is just bad calibrated? I followed your technique of pressing with the fingers and moving in little circles and also used plenty of gel.

thanks in advance

I think the link you posted doesn’t work, but if it’s the Delta one from India, I got a very similar one and I’ve stopped using it - found the same thing, had to ramp up to well over 2 W/cm2 to feel something and just wasn’t confident in it.

I then bought a more expensive second hand reconditioned machine which had been checked before being resold - it’s much better quality, and I can set the timer and intensity much easier, but importantly it’s giving a quantified output. I had called up the firm selling the reconditioned machine, and mentioned about the Indian one, and they said that they had tested some of them and found the output was all over the place - i.e. quality of product isn’t good/consistent. Also the ERA (radiating surface) is much more on my reconditioned machine, and probably much smaller on the Indian one. I’d therefore say probably that it’s better to go for a higher cost/quality machine if using US?

Having said that, US heats the shaft up, but you don’t feel it in the shaft very much, I only really feel it in the fingers underneath (under the fingernails).

Hello eivbisi,

As you can see Waterman found poor heating experience with the same equipment .

For the risks involved with higher intensities you should read the thread I have recently started.
Using the ultrasound for therapeutic heat in PE

But there are couple of main issues I can state shortly:

- The greater the intensity the greater is the possibly harmful peak intensity spikes in the ultrasound beam.
- Overly heated hot spots
- cavitation risk
Which both could lead to cellular damages.

If seems to be real trouble heating the unit with US while stretching/hanging straight out or using extender.
Before going for another machinery you should try one particular trick first.

For the efficient heating you should try to place the shaft against the skin of your thigh during the heated stretch.
The possible cause for the poor heating experience is examined in this post:
Heating problems with extender users

In short terms the fingers behind the shaft allow the radiating waves to go through the shaft and not reflecting back to the transducer.
If we put the shaft completely against the skin of the thigh the US beam heats the penis at much better rate than the shaft without the backing medium.

I did all of that, it was hanging over the leg. Unfortunately i cant expend more in buying a higher quality one, will try today with 2.5W/cm2

The 3 w/cm^2 has been taken as a standard upper limit of intensity mostly because it starts to be poorly tolerated.
Unfortunately we don´t know the BNR value of your machine so it is up to you to evaluate can you tolerate it and if you are willing to risk it more. With a low BNR value these higher intensities are both better tolerated and safer as well.

In continuous mode the biggest risk is still the hot spots formation but keeping the transducer moving , these spots cooldown quickly as we already know. Caviatation and what comes within is more likely to occur with pulsed applications.

Anyways take it by small increases and if it feels intense keep moving at faster pace.

Hello Guys.

I have the US pro 2000 and a hug jug of ultrasound gel, but have yet to use it. I’m actually a bit afraid. What is there to worry about? Can I try it, without my stretcher on?

At the moment I am (hopefully) recovering from a Glans injury. I was manually stretching with my hand on the glans and gave it too much. I didnt feel a pain at the time, but the top of the corona ridge is super sensitive, almost like a burn. I also can’t seem to inflate the glans as easily unless I really kegel hard, and then they inflate for a little. Can ultrasound help my injury?

Almost tempted to buy a shockwave machine too now. Sorry for going a little off topic. I’m kinda worried, but my doctor can’t see me for 3 weeks.

I went better today, i may be able to make it work with 2.7-3W/cm2

“The load in grams divided by the thinnest cross sectional area of the penis”

So you just measured the outside diameter during stretching or estimated the rough cross sectional area that’s being pulled? I am asking because when I pull, my “steel cord” is on the left side and there is some loose CC on the right side. So, the cross section that’s actually being pulled is smaller than the the outside diameter.

Unfortunately estimations won´t apply in this one. I measured the circumference behind the glans. The measurement has to be done the foreskin fully extracted for uncircumcised unit.
I also have the restricting cord by the septum and the tension is distributed to a small area because of it. The diameter behind the glans gets really thin during stretching.

Acrylic seems to have impedance similar to muscle and water. Have you considered heating with US through the cylinder while water pumping? Ideally it can be done while submerged in a tub with newer waterproof US probes as this would eliminate the need for a gel pad on the opposite side of the cylinder.

Hi Aza,

There are difficulties in the procecution. There will be already major attenuation by the reflection at the boundary of water and acrylic cylinder wall. 14 % gets reflected back.

The amount not reflected in the first place gets absorbed in the acrylic material by acoustic impedance of 3.13 × 10^6 kg/(m2
s). Soft tissue has average of 1.6 x 10^6 kg/(m2s) .

Which means the absorbtion is twice as intense in the cylinder wall than the penis. Elevating the intensity would cause the cylinder heat up proportionally to the intensity. With 3mm wall the intensity gets attenuated roughly by 20%

Every boundary of different acoustic impedances cause reflection and there are second at cylinder water boundary - 11%, third comes at water to skin boundary (2%)

Which will leave us having maybe 50 % of the ultrasound intensity left when it reaches the the skin of the shaft.

I tried it once only briefly and just found out the intensity of 1.6 w/cm^2 was not enough to heat the penis. Cylinder wall got warmed a little.

The best option would be polycarbonate made cylinder with sexagon outfit having flat outer surfaces and high intensity on ultrasound source.

You are right, I looked up wrong type of acrylic.
Impedance in kg/(m^2*s):
Fat - 1.34
Muscle - 1.71
Blood - 1.65
Water - 1.48
Acrylic (clear) - 3.26
Polycarbonate (clear) - 2.69
(from https://ndt.net … inks/proper.htm )

Acrylic may reflect more and absorb less. Acrylic has attenuation 6.4 dB/cm @ 5 MHz and polycarbonate has 24.9. It may vary based on manufacturing process and composition. I also saw a value of impedance 2.32 for clear acrylic with attenuation 11.3 in another source, which has common acrylics around 3.15-3.5 (https://commons .erau.edu/cgi/v … 150&context=edt pages 21, 38).

Attenuation @ 1 MHz for water is 0.0022, blood 0.2, fat 0.48, muscle 1.48 (Wikipedia). If acrylic @ 1 MHz is somewhere between 6.4/25 to 6.4/5 = 0.26-1.28 (?) cylinder should not absorb too much.

Flat interface probably reflects less than a round one, especially when sound hits a denser medium. Don’t know how much it matters for a thin wall.

Did you try it with gel pads at both in/out interfaces?

I am curious about US because I currently do water pumping while sitting in a tub, using an acrylic cylinder and a rubber squeeze bulb type pump + sealed gauge that I connect sometimes for pressure control. May add US in the future if it’s simple enough.

Tried it only with water in and out. You could try with outer gel pad.

Having multiple interfaces between there should be also scattered wavefront additional to the attenuation. It can work but the intensity needs to be significantly higher than in traditional use.

Hi Kyrpa

So I think I’m going to be more efficient at doing girth work - see my latest post if interested.

I’m wanting to use US heat for this, and trying to craft a routine where I can get out of the heated extender and into the TT quite quickly to keep most of the heat. If I use the BiB for the heated stretch, this won’t be possible quickly - coming out the crushing BiB device, it takes a while to recirculate and then get erect. So thinking of the PMP extender for the heated stretch - I just don’t want to max out at more than 1.1kg as I risk blistering. I know you’ve done it with some adaptations (which I could do I suppose) but I’m wondering if I really need that - my BPFSL is long enough, all I need to do is to keep it in the max stretched state (say if I’m in PMP for an hour prior I should get there) while doing the heating - this way I can come out of the PMP closer to erect state if I do some kegeling, which means it’s all more do-able. What do you think of the US stretch with less than 3kg in this case?