Can the length of your
cinch/girth affect your horse’s performance, your saddle’s
fit and your enjoyment of your ride? Absolutely! We have all
seen cinchy horses where they turn to bite you when you
saddle them up. We have also seen people adjusting their
saddle when riding down the trail or in the arena, swinging
the saddle back into position with their rear ends. Worse,
we have all seen saddles slide when we put our foot in the
stirrup to mount. All of these issues are caused by a cinch
or girth that is too long.

Wait, you say, I have always
used this length cinch and I’ve got a horse that is 16
hands. He’s a big boy. Take a look at the horse in this
picture. He has a heart girth of 88". That means he measures
88" around his body at his girth groove. He is 15.3 hands
and weighs 1200 pounds. HE IS A BIG BOY! Yet, he is ridden
in a 24" cinch. How can this be!
From
the front all horses have the same basic shape, high
withered or no withers. The widest part of their body is at
the apex of the curve of their rib cage. If your cinch or
girth ends are above this point, no matter how tight you
pull the cinch/girth, you will never get enough grip. The
body of the horse is sloping inwards towards the spine above
this point. Your saddle will slide forward and back, your
cinch/girth will slide down towards the widest portion of
the horse (the apex of the curve of the rib cage) and your
saddle will slide from side to side, if not under the belly
of the horse. The worst thing is you are choking your horse
as you pull tighter and tighter.
All horses breathe. Yes they
do, and when they breathe they expand their rib cage (chest)
to allow their lungs to take in air. Imagine if you were
going out for a run and someone tied a rope tightly around
your chest. It would be difficult for you to breathe and you
would most likely find this be very annoying. I’ll bet you
your horse feels the same way. In fact, he probably tells
you he doesn’t like this when he turns his head and tries to
bite you when you saddle him up. If you’re female and wear a
bra (all you wild child’s from the sixties and men will have
to imagine this) you have experienced the same feeling. When
you breathe in, your chest expands and the wire foundation
digs into your chest. That’s why they invented sports bras.
If the cinch/girth is below
the apex of the curve of the rib cage, you won’t have these
problems. The body of the horse is sloping out towards the
cinch. You don’t have to pull as hard to tighten the
cinch/girth. You will get immediate grip so your saddle
won’t slide back and forth. The cinch can’t slide from side
to side either since you are already at a widening portion
of the horse’s body. Most importantly, your horse can
breathe. The cinch/girth won’t constrict the expansion of
the rib cage when the horse breathes in air. The horse will
be more comfortable and will be less likely to bite you.
So how do you really know
what size cinch/girth is right for your horse. We have all
seen articles in some flashy magazine that says if your
horse is 14 hands you need a small size and if you horse is
15 hands then you need this size. If you horse is 16 hands
or more, you can’t go wrong with the biggest size available,
they’ll say. Obviously, these folks have never seen my 4
foot tall grandmother who was 5 feet wide. There was no way
a 20" belt was going to fit around that woman’s waist. Not a
very scientific way to approach this subject.
What is purported to be a more scientific
approach fails to be accurate as well. The "Golden Rule",
where you measure the horse’s heart girth, divided by 2, and
then subtract 3", is supposed to give you the correct cinch
size for your horse. If we use the gray horse, in the photo
at the top, we can see that this doesn’t work. This horse’s
heart girth is 88". Divide by 2 will result in 44" and then
subtract 3" and you get a cinch size of 41". I don’t think
so!
There
is only one way to measure the size cinch/girth that is
correct for your horse. The buckles of the cinch must be
clear of the elbow and yet still be below the apex of the
curve of the rib cage. Looking at this closer look of the
horse’s front leg, we can see where the elbow is. We can
also see where the shoulder and the point of the shoulder
is. This is not where the cinch/girth should be. The lowest
point it can be is about 3-4" above the elbow. This will
allow for clearance when your horse brings his leg back.
There will be no interference at this point. If you take a
string and hold it on one side of the horse at a point 3-4"
above the elbow, and then run it under your horse to the
opposite side at the same point (3-4" above the elbow) you
will have measured the length of the cinch/girth you horse
needs. Simply place the string against a yard stick or tape
measure and you will have the exact length. May people who
use 30"-34" cinches/girths will be very surprised by what
they find. The length for most horse’s will be between
24-26" no matter how tall, big, or type of confirmation.
Some horses will be less.
I know this sounds different,
maybe even strange. But try it. Measure your horse or borrow
a smaller cinch/girth from someone you know and give it a
try. Your saddle will be more stable. It won’t move from
side to side or front to back. Your horse will take a deep
breath and a sigh of relief.