Perineum pain = need larger saddle cutout?
07-04-16, 01:54 AM
#26
Senior Member
I think it is a little more complex. If you are stretched on the bike (long reach, more than 90 degrees between arms and body - "race position"), it might not go that way. Tilting up the nose in such conditions might further press the perineum, because the body is already stretched and might not be able to rotate pelvis back; on the contrary, the body might desperately search to re-gain the same (already stretched) reach and will press on the saddle nose (perineal pressure).
If the bike geometry is relaxed, a little "nose up" might help.
But, again: the saddle geometry is misleading. If the saddle is too flexible for the rider's weight, then 2-3 deg. nose down might have the effect of a level saddle or even of a little nose up, when the rider puts its weight on it. That is because the sit bones push down the middle of the flexible saddle, below the level of the saddle nose.
This is a situation where you set up a little nose down position, but you end up with a little nose up while riding, without knowing it.
Unfortunately, even guided by the above and more scientific things, one still have to go the route of "trial and error" until he finds his own position.
If the bike geometry is relaxed, a little "nose up" might help.
But, again: the saddle geometry is misleading. If the saddle is too flexible for the rider's weight, then 2-3 deg. nose down might have the effect of a level saddle or even of a little nose up, when the rider puts its weight on it. That is because the sit bones push down the middle of the flexible saddle, below the level of the saddle nose.
This is a situation where you set up a little nose down position, but you end up with a little nose up while riding, without knowing it.
Unfortunately, even guided by the above and more scientific things, one still have to go the route of "trial and error" until he finds his own position.
Last edited by Redbullet; 07-04-16 at 02:06 AM.
07-04-16, 02:04 AM
#27
Senior Member
07-04-16, 06:47 AM
#28
Junior Member
I did google perineum and I'm sorry...
I've been using the sella smp lite 209 for same issue. Works pretty good. Expensive - having good luck will well worn Brooks b-17 as well.
I've been using the sella smp lite 209 for same issue. Works pretty good. Expensive - having good luck will well worn Brooks b-17 as well.
07-04-16, 06:49 AM
#29
Junior Member
Tried sella anatomica - not too bad - not as good as many reviews said. Kinda pinches. Maybe tapering the cut out edges would help.
07-05-16, 08:24 AM
#31
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I'm a 118mm sit bone guy. Tried 143mm, 155mm and still felt like the bones had no where to sit on various Specialized, WTB, Selle Royal Saddles. So on a whim cause REI will let you return anything within one year I tired a 173mm wide Terry Liberator Y. No more pain my sit bones have room to move and highly supportive. Its an upright kind of saddle perfect for my bike which is a hybrid.
07-05-16, 01:59 PM
#32
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Which is bad because you want firm contact and support primarily on the ischial tuberosities. If the saddle molds too much, you're riding on mush and jamming your junk.
If you're sitting on the saddle correctly, your butt should be squarely on the saddle and you should feel two firm support points. If you're sitting on your pelvis, you're not crushing other tissue.
And nose down is usually not good. Because you slide down/forward and then your IT are outside the supporting area of the saddle on the narrow part. Then you have to push yourself back putting pressure on your hands and that makes your hands numb. It's a vicious cycle.
If you're sitting on the saddle correctly, your butt should be squarely on the saddle and you should feel two firm support points. If you're sitting on your pelvis, you're not crushing other tissue.
And nose down is usually not good. Because you slide down/forward and then your IT are outside the supporting area of the saddle on the narrow part. Then you have to push yourself back putting pressure on your hands and that makes your hands numb. It's a vicious cycle.
And I never said the saddle should be nose down...
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