| This page shows the JBM stainless clamp and some of the
damage that can be caused by improper clamping pressures.
The JBM stainless clamp has a range of 46 to 69 mm.
This clamp is suitable for some of the larger carburetor
sockets we manufacture, and is different from common auto-
parts store clamps.
This clamp is lined with an extra long stainless band to help
prevent cutting of the rubber by the worm housing. It is
important that the surface of the rubber not be torn or cut as the
cuts will propagate. In most cases the factory clamp works just
fine, and can be reused many times, but if you need new ones,
we think this stainless clamp from JBM is a good solution. It
works on all the sockets sold by JBM Industries..
|What is TSR compound? What kind of rubber is it? What are the qualities of it? Is it
TSR compound is a patented rubber compound that only JBM Industries is using for
the manufacture of high quality fuel resistant rubber parts in light sport aircraft and
vintage motorcycles. ( Working -10 to +275 deg. F )
The qualities of the TSR rubber are that it has high fuel and chemical resistance so
works well with fuels that contain ethanol. It also is very resistant to heat, ozone, and
age cracking. Age cracks are the small surface cracks seen in old rubber that can be
seen with just a slight bending of the rubber. Usually you will see many of them, and
they will not be very deep, but they do weaken and soften the rubber, causing more
flexing and so more age cracks.
Many elastomer's get age cracks, and on some rubber, such as natural rubber they
might look bad but cause little weakness. On other types of rubber they can degrade
and weaken it quite a bit.
To check for age cracks, it requires a small amount of bending or flex to see them
open up. Rubber parts should be checked for age cracks frequently.
|This photo shows what "Age Cracks" look like.
|Ethanol causes lots of problems
|Carb Holder Failure on Vintage Motorcycle caused by
regular pump gas that contained ethanol.
|Worm Clamps for our Aircraft Carburetor
Sockets. Working range 1 13/16" to 2 3/4"
These have special liner tail for soft rubber installation.
These clamps are large enough to fit our Jabiru sockets.