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THE SADDLE, THE BACK AND THE BUMFor as long as saddles have been in use it has been recognised that the underside of the saddle should be as near as possible the same shape as that part of the horse's back upon which it must sit. Why then are some saddles produced with panels that have profiles which appear to totally disregard this principle? Very often, such saddles are otherwise of excellent quality both in materials and workmanship, but do not incorporate gussets in the panels with the result that the last four or five inches under the cantle does not bear the back. When one considers that this is the widest part of the panel the result will be that the part that does bear will be exerting considerably more pressure than would be the case if the whole area of the panel is made to bear weight evenly.
Before this century saddle design was largely dictated by the military and from an examination of the universal pattern trooper saddle which is still in use, it is evident that the objective of the designer was two part. Firstly the seat was relatively deep to keep the rider from falling off and secondly, the wooden bearers or bars which sit either side of the vertebrae were made so as to conform to the shape of the average horse's back in order to avoid saddle sores. Because the saddles were of standard shape and sat on folded blankets, success in this regard was highly variable, but at least the principle was sound.
I believe that some time last century hunting people complained that traditional saddles were too restricting when riding across country and particularly when jumping, which resulted in the introduction of the flat seated hunting saddle. Because the underside of the tree was shaped so as to follow the line of the horse's back the panel was approximately the same thickness throughout its length. The topside of the tree or seat was then padded with flock, serge and leather so as to support the rider with a minimal degree of comfort. Because the seat was relatively flat it was possible to fulfil the uniquely dual role of the saddle which is to fit both horse and rider on the same framework.
However the second half of the century has seen a dramatic increase in dressage riding with the consequent introduction of the deep seated German dressage saddle. Simultaneously horse riding has changed from being solely the pastime of the upper classes to a sport without social barriers resulting in large numbers of part-time riders who undoubtedly found that the security provided by the deeper seat gave them added confidence.
Saddle makers responded by making deep seated saddles on banana shaped trees and because the panels largely followed the shape of the tree they began leaving the horse's back at the cantle end. Eventually most saddlers began to incorporate gussets in the panel under the cantle in order to enable the panel to follow the line of the horse's back and those that did not produce panels that bear no relationship the horse's back.
However, I find that some large horses, usually Warmbloods or Thoroughbred Irish Draught crosses have withers that are so much higher than the back, that normal saddles are high at the pommel, even with the minimum clearance under the arch. Most saddlers will make deep gussets; even so it is sometimes not possible for the saddle to fit level and balanced. Understandably saddlers are reluctant to make

panels which are excessively deep at the back and I know that some people have serious misgivings about relying on wedge shaped panels in order to stay in contact with the horse's back, since they believe that the variable depth of the flocking in the panel may result in a variable degree of pressure on the back throughout the length of the panel.
My local pub in Minster here is The Saddlers Arms' and displayed on the wall of the saloon bar is and army officer's saddle of some antiquity and each time I see it I wonder if it is not superior in design to the modern saddle; the bars are padded but are of equal thickness from front to back. The seat is deep but has no effect on the shape of the bars. I realise it is not close contact but neither is a saddle with an excessive depth of panel under the cantle. Only a relatively flat saddle which can have fairly thin panels can achieve close contact. Have you ever noticed pictures of our top show jumpers using expensive close contact saddles with layer of thick numnahs under their saddle?
Some saddlers produce saddles for endurance riders that have "fan back" panels that appear similar to design in the military "Universal Pattern" saddle. Frank Baines1 Endurance Saddle and Thorowgood's Rambler and Trekka Saddles are examples and the Roe Richardson Reactor Panel saddles are basically a development of the military saddle using modern materials. The difference between this type of saddle and conventional saddles is that they don't rely on wedge shaped panels to achieve a balanced fit. While I don't know enough to have an opinion as to the efficacy of these saddles they do at least treat the requirements of the seat and the panel separately.
It is I believe accepted that saddle makers with notable exceptions don't fit saddles; nevertheless tree makers naturally produce what saddle makers specify. I realise that innovation is expensive and has no guarantee of acceptance by the riding public, however I wonder of it would be possible to design a tree that would obviate the need for a wedge shaped panel which is currently necessary to compensate for the banana shaped tree which in turn produces the deep seat. Such a tree would make it far easier to accommodate the needs of the larger horse with excessively high withers.
Could it be that the Society of Master Saddlers with its blend of saddlers and saddle fitters is uniquely qualified to examine and possibly influence saddle design?
Finally, I hasten to add that my purpose is not to offer instruction for which I am not qualified; merely to question in the hope that debate ensues.