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Bridging

Posted by RodandDenise on January 7, 2016

You can now purchase our 67 minute video, Western Saddle Fit - The Basics, by going to our new website, westernsaddlefit.com. We also have a 7 minute YouTube video on Western Saddle Fit - The Essentials.  Enjoy!

2016 Jan 7 1 Bridge.jpg

This is a bridge. It contacts at both ends and has lots of empty space underneath it.

2016 Jan 7 2 bridging tree.jpg

This is a badly bridging saddle tree. It contacts on both ends and has lots of empty space underneath it as well.

2016 Jan 7 3 effect of bridging saddle.jpg

This is the effect of a bridging saddle. You can see the white marks front and back as a result of high pressure areas under the saddle. I don’t think I have seen white marks like this at the back of a saddle before other than from rub marks, and then it is generally on pack horses.

2016 Jan 7 4 see bridging on the pad.jpg

Here is a pad that was used under this saddle. The owner was trying to pad up to protect the horse – thus the thick pad. You can see from the hair and dirt where the tree is contacting the horse. Front and especially at the back, with little to maybe no contact in the center of the bar.

2016 Jan 7 5 see bridging on the white cloth.jpg

The owner did a “white sheet” test as well – put a white sheet under the saddle and pad and ride a while. The dirt pattern you find on the sheet tells you a lot about where the saddle contacts. Again, you see contact front and back, but especially high contact at the back. (It also shows more contact on the back of the right bar, which fits with how the saddle was worn – but that is another problem relating to unevenness somewhere. The bridging just shows it up more.)

So why does this happen? It is a mismatch between the horse and the tree. The bars are too flat for the horse, or, conversely, the horse has more rock in their back than the rock in the bars. In the above tree picture, the horse had a fair amount of rock in their back, but that was also an old cutting tree that would likely bridge on a mule. Those bars are incredibly flat – no rock at all to them. Why? At that point the cutters were asking for two things – a very flat seat, and very thin bars that put you close to the horse. If the top is flat and you can’t make the bars thicker anywhere, what does that do to the bottom of the bars? You got it! They have to be flat too. This tree demonstrates what can (and often does) happen when the request of the rider is followed without thinking through the whole effect on the horse. Fortunately, this extreme a tree is no longer the norm.

2016 Jan 7 6 bridging flex tree.jpg

Both the first tree and the saddle issues pictured show severe bridging. But bridging can happen with less of a gap, or even a gap that is hard to see. And of course, you can’t see it with a finished saddle because you have a saddle in the way. So how do you know if your saddle is bridging? Practically, you have to feel for it.

Put your saddle bare on the horse, not cinched up. Make sure it is in the correct position, with the front of the bar right behind the shoulder blade of the horse. (Feel for both of them to know you have it right.) Then, with your palm against the horse, slide your hand under the bar from front to back. Yes, it is a bit awkward and you have to get the fender over your arm, but you’ll figure it out. What you are feeling for is the contact of the saddle against your hand. Is it even all the way along the bar? Are there any high pressure areas or areas where you have less pressure or lose contact all together? If so, those are problems.

If you lose contact, or have less contact, under the center of the bar, your saddle is bridging. That is often easier to notice than if you have high pressure under the ends of the bars, though you can feel that too if it is severe enough. (Note, you can also feel things like the back of the saddle lifting off your horse, or that the bar angle is not matching the horse because there is contact or high pressure at either the top or the bottom of the bar with the other edge lifting off.)

2016 Jan 7 7 results of bridging saddle.jpg

So, is this a problem? Well, the white hairs tell you it must be. But even without white hairs, sore horses can result from the high pressures under bar ends that bridge on a horse. Often it is the loin of the horse that is sore but that may be hard to detect if you don’t know what you are looking for. Does your horse react at all as you brush that area, moving around a little or even showing other signs like putting his ears back or making a “grumpy face” by tightening lips, etc.? Does he flinch if you run your hand over his loin with a bit of pressure? A lot of horses are sore and the riders don’t know it. (The horse in these pictures has apparently never shown obvious soreness to the rider.)

What about the idea that you want a small bridge for the horse to round into? Well, research shows that horses sag under weight, so even when they do “round up”, they aren’t starting from what you see when they are standing there bare. They have a lot more “rock” in their back when you sit on them than when you don’t. (If you doubt that, see what happens to the angle of the horse’s topline behind the saddle when someone gets off. Watch how much it straightens.) So a tree that totally matches the horse bare will be bridging, at least somewhat, under weight.

The idea of the horse “rounding up” is often demonstrated by people making their horse do a “belly lift” – tickling or poking lightly under the belly to get the horse to tighten the abdominal muscles which lifts the back up. But watch the back when it lifts. Does it come up in a short area just underneath the saddle to fill in a bridge? Or does the whole back lift up? And if the whole back lifts – which it does – it lifts the whole saddle up, bridge and all. Yes, it may fill in just a tiche, but not enough to fill a bridge you can actually see or feel on an unweighted horse, even if the horse didn’t sag under a rider – which it does.

So no, you don’t want a bridge ,even a slight one, under your saddle. You want the ends of the bars to lift off a bit, but not too much, to avoid high pressure areas at the bar tips. Because while bridges are great for getting you across canyons with comparatively little effort, they are a pain (literally) when it comes to saddles and horses…

Comments:

Posted by Mrs Shoes on
Years ago, my best gelding suddenly began flinching every time I came out of the tack room & he seemed tender in the loin.
I had the vet out, he couldn't think of any reason it should be (switched vets since).
Then I spotted 3 little white hairs back of his shoulder & it clicked for me that the saddle had to be the problem.

I switched to a different saddle & the sull went out of my boy almost instantly; took him a little bit longer to stop the anticipatory flinching when he saw the saddle coming, but once he understood the 'bad saddle' wasn't in the cards anymore, he came back to himself.

When that gelding was younger, the 'bad saddle' had been okay for him, but about the time the problem started, he was turning 10 years old & his shape had just changed some. (Once in a while I might tease him about that, & I swear that the look in his eyes is pointing out that I don't wear the same jeans either that I did when we were first a happy couple.. I guess that we have both 'matured' into some very pleasing curves padding up the muscles that are still where they ought to be.)

I have always been lucky enough to have a few different saddles & horses to choose from, & been grateful for that as being put in the position of NEEDING to buy would have meant riding bareback a time or two over the years.

I don't think that a saddle fit problem can really be fixed with pads & shims (other than on a very temporary basis), but maybe I'm wrong. Perhaps you can speak to that?

I sure do look forward to your articles!
Posted by Jim Townshend on
Rod and Denise; definitely covers the subject. From time to time I get questions from people about white spots, scald, sore backs, horse/saddle fit, padding, people/saddle fit, and probably about 20 other things that one way or another pertain to them, their horse, their equipment, and how it all works together. I never fail to be amazed at the voodoo that passes for conventional wisdom among horse owners and people involved at a primary, secondary, tertiary, and combined levels of the so-called horse industry. Nor am I any less amazed at the resistance to change among the horse-owner/rider set when a problem arises that might be solved with large or small changes to what they are doing with respect to their riding practices, equipment, and horse care. At the same time, I am at least as amazed at the number of people who sell saddles and claim to have the skill to "fit" saddles to individual horses. I am starting to think that the back card system devised by Lane and Morris may have some applications with respect to the enterprise of attempting to predict how a finished saddle may fit a horse, with respect to both individual matches, (particular horse and saddle), and general fitness of a particular saddle to a larger and more general mix of horses as a population. That is to ask "what would be able to learn from using the rock and profile cards, (and maybe more particularly, the cutaway pieces corresponding to each gradation supplied in the set) to assess the rock, wither/shoulder, center back, loin/hip areas of the underside of the finished saddle?" At the same time, we also know how a badly executed groundseat, and of course a poorly shaped top-side of a tree affects rider position, balance, and wear on a horse back. And of course, we get to watch the results that range from comical to pathetic as the rider tries to cover the horse, (and the horse attempts to safely and comfortably cover the rider). It is not inconceivable to me that such templates, when ethically and correctly applied to horses and saddles could help significantly to: promote better horsemanship; encourage better saddle construction and use; while at the same time discouraging manufacture and sale of ill-made and ill-fitting saddles, (and for that matter, other horse equipment, that fails to optimize the horse/human interaction). Denise, I have a hunch that you have yet to make a contribution to the horse and rider, even after Rod takes up his new calling. Your website and other writing could well be both a source of information and income if you so chose. (Witness the Parelli "newsletter subscription" at $15.00 per month with 150,000 or so monthly subscribers) as related to me by the late Ron Knapp who had a long time relationship with Parelli. The idea has considerable potential to provide a valuable educational and investment guiding service to riders while improving the possibility for better outcomes for horses. It would also provide a platform for influencing owners/riders choices in horse health, care, and nutrition leading to considerable benefit to horses, for whom barely anyone speaks pertinently, credibly, or ethically. Lots of subject matter, lots of need, lots of potential. And few as well qualified All the best jt
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