What is different about Redco oil field blocks vs. our competition?
First off our yarn is different. We not only use glass and acrylic,
as do our competitors, but we also blend Kevlar. The Kevlar not
only puts strength into the lining, it also reduces the friction
of the block to that of asbestos. This reduces the wear on flanges
which most of you have experienced with glass-acrylic.
Redco Blocks contain less than 10% fiberglass
and, along with other high-tech synthetic fibers, these blocks are
less abrasive and run cooler.
Remember, use water cooling on the brake
flanges where possible to reduce heat. Use your hydro-tarders (Parmac,
etc.) to take most of the load off the brake. Check the band take
ups often to insure complete brake contact with the rims. Take good
care of your brakes and they will take good care of you!!
Fiberglass itch during installation has
been eliminated as we have non exposed fiberglass. So why doesn't
our competition adopt Kevlar? The bottom line is that glass acrylic
yarns sell for about $2.50 to $3.00 per pound. Kevlar blends average
$7.50 per pound.
Now look at our finished block. Notice
how uniform the arc is, the finish grind, and the use of ferrules
in the bolt holes. Also our plugs are woven and not molded. This
means easier installation by your mechanic and faster breaking in
because our blocks fit better. Unlike asbestos which is softer and
more malleable, non-asbestos is less forgiving if not properly ground
and arced. Remember your brake demands 100% contact for maximum
Wear life in non-asbestos has been described
as longer than asbestos. Let's put this myth to bed. It appears
that non-asbestos lasts longer because it "grows" as it
is used. This is a non-asbestos phenomenon. When brake engineers
measure non-asbestos for wear they no longer measure lining thickness,
they weigh the linings for weight loss. Ever notice the phenomenon
of a non-asbestos lining suddenly just crumbling apart? That is
because voids have been created by the "growing" phenomenon.
We minimize this phenomenon by weaving our linings tightly and then
rolling our linings several times to assure that you receive the
most dense lining possible.
All brakes fade when they got hot. A
good brake has a predictable fade and a good recovery after cooling
down. Non-asbestos will begin to fade at about 359 degrees F; asbestos
would hang in until about 450 degrees F. Reddaway non-asbestos has
a gradual fade just like asbestos, warning you to cool down your
brake. Many non-asbestos lining hang in a little longer then, suddenly
nothing, no warning, no brake, and there goes a tool down the hole.
Our lining also exhibits the same friction
as asbestos, approximately 0.40. This is what your rig was designed
around since it offers maximum braking power without tearing up
flanges. Other lining companies will tell you their linings are
better because they have higher friction levels. The truth is that
it is easy to make a high friction product.
Ever notice that some brands of non-asbestos
blocks are inconsistent batch to batch? Unlike asbestos, which soaks
up resin like a sponge, synthetic yarns tend to reject the resin
and only cling to the surface. Control of your resin mix becomes
extremely critical. We run a "burn out" on each batch
of resin to determine our resin content. This step assures you that
any set of blocks you get from Reddaway will be consistent each
and every time.