front to back of skull over scalp strap

[papnapper]

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Has anyone else considered the following?

With all masks I've tried, if I turn my head left or right, the mask is pulled sideways by the strapping.

All the bony bits of your skull which are above your lower jaw (including your nose) pretty much one fixed piece. However, your neck is flexibly attached to the skull.

If the strapping is pulled up from the back of the neck until it is all above the neck, and you hold it there, then the pulling does not occur.
I have rigged up a hook to the top of some masks and connected a suitable length of strap going centrally over the scalp and anchored to the mask-strapping at the back to keep it up on the base of the skull. No sideways pulling occurs.

This does not help up or down pulling if you raise or lower your chin. If that could be prevented, combined with the above, then two major steps towards stability would be achieved, akin to holding the mask with your hand. Any ideas?

[n0hardmask]

Try saying the Subject three times quickly
Has anyone else tried this?
With all masks I've tried, if I turn my head left or right, the mask is pulled sideways by the strapping.
The roof of your mouth and your nose and your skull are all one fixed piece. However, your neck is flexibly attached to the skull.
If the strapping is pulled up from the back of the neck until it is all on the skull, and you hold it there, then the pulling does not occur.
I have rigged up a hook to the top of some masks and connected a suitable length of strap going centrally over the head and anchored to the mask-strapping at the back to keep it up on the base of the skull. No sideways pulling occurs.

Interesting.. are you saying you re-shape the headgear to a point at the rear center of the skull? I wonder how that affects the ability to adjust the mask.. probably varies with each individual mask style and head shape?

This does not help up or down pulling if you raise or lower your chin. If that could be prevented, combined with the above, then two major steps towards stability would be achieved, akin to holding the mask with your hand. Any ideas?

For that second idea, you may have to consult with the original hardware designer - God. But, I suspect the majority of my leaks, anyway, are due to pulling laterally, rather than vertically. I think I'll try your idea with my sleepweaver mask. Thanks, Papnapper

[RomeinDNVR]

Would you mind posting some pictures of your setup?

[papnapper]

Interesting.. are you saying you re-shape the headgear to a point at the rear center of the skull? I wonder how that affects the ability to adjust the mask.. probably varies with each individual mask style and head shape?

Yes. I have re-worded my original post in an attempt to clarify.
I have not had a mask that couldn't be re-adjusted ok after adding the over-the-scalp-strap.
A decision to be made is whether to bring the lower strap forward above or below the ears. One mask I tried (can't remember which now) had plastic straps that directed the stretchy straps over the face. Something like that could be used to avoid contact with the ears.

Photos are coming.

This does not help up or down pulling if you raise or lower your chin. If that could be prevented, combined with the above, then two major steps towards stability would be achieved, akin to holding the mask with your hand. Any ideas?

For that second idea, you may have to consult with the original hardware designer - God. But, I suspect the majority of my leaks, anyway, are due to pulling laterally, rather than vertically. I think I'll try your idea with my sleepweaver mask. Thanks, Papnapper[/quote]

[papnapper]

"A decision to be made is whether to bring the lower strap forward above or below the ears. One mask I tried (can't remember which now) had plastic straps that directed the stretchy straps over the face. Something like that could be used to avoid contact with the ears."

Here's http://www.resmed.com/us/products/quatt ... s&sec=truethe sort of thing I was thinking of ie like the upper plastic strap but using something similar for the lower strap to bypass the ears

[n0hardmask]

"A decision to be made is whether to bring the lower strap forward above or below the ears. One mask I tried (can't remember which now) had plastic straps that directed the stretchy straps over the face. Something like that could be used to avoid contact with the ears."
Here's http://www.resmed.com/us/products/quatt ... s&sec=truethe sort of thing I was thinking of ie like the upper plastic strap but using something similar for the lower strap to bypass the ears

Papnapper, I took a look at the link you posted and tried your technique with my cloth Sleepweaver. It has a three point headgear and usually comes down fairly low on the neck. When I tacked up the low back cross-strap, I notice two things. One, it does seem to be more motion independant when turning head side to side, as you say. But -2- given the all-soft cloth construction, it appears difficult to impossible to adjust mask to hold air pressure with the lower straps arcing up behind the eaar; and to try doing so above the ear would probably require a total rebuild of connectors to inlcude some hard plastic.
But if you can develop a three strap connector headgear configuration that could be tailored for the Sleepweaver, I'd be interested in it. Keep up the brain juices, you may be on to something.