Dual Range® Auxiliary Transmissions
NOW YOU DON'T HAVE TO CHOOSE BETWEEN
POWER AND ECONOMY
AMERICA'S MOST POPULAR AUXILIARY
TRANSMISSION
Drive Train Specialists
is Proud to Offer you the US Gear line of Quality Performance
Products. When it comes to your Families and your Equipments
Safety, rely on the Experts at Drive Train Specialists
to supply you with US Gear’s fine
products. D-CELERATOR UNIFIED TOW BRAKE, D-CELERATOR DIESEL
EXHAUST BRAKE, CYCLONE POWER FAN, DUAL RANGE AUXILIARY
TRANSMISSION, TORQ-LINE GAUGE KITS, AND THE TORQ-LINE CHROME TURN
DOWN TAILPIPES.
Changes
in the Towing Industry
Over the past decade, automotive manufacturers have incorporated
major power and performance enhancements to both gasoline, and
especially diesel powered vehicles. In fact, many of these
specialty engines have an amazing amount of torque under the hood.
Some vehicles on the other hand, are designed to simply provide
good economic value. From the factory, your vehicle should be
equipped to give you either the power you are looking for, or the
economy you need. In the real world however, it's not that simple.
There are times when you really need the extra power; like when
pulling heavy loads. Then there are other times when you really
need the fuel economy; like when cruising at high speed with no
loads. It is for this reason that US Gear offers TWO DIFFERENT
AUXILIARY TRANSMISSIONS; AN UNDERDRIVE UNIT OR AN OVERDRIVE UNIT,
MADE IN AMERICA. No other manufacturer in the industry can
make that claim.
Why Two Different Units?
From the factory, your vehicle comes with only one rear-end ratio.
So what happens when sometimes you're heavy and in need of those
extra low end gears to get you up and moving while other times
you're light and need the higher gears to get you moving faster
and more economically? The fact is that one extremely low gear
ratio does not offer the gear selection necessary to provide both
low speed power and high speed economy. And what about the times
when you're at high speed and suddenly need just a little more
power, but don't have enough gears to comfortably get any.
Conversely, if you are at low speed and suddenly need to be moving
quicker, there's simply no way to make it happen. To keep the
engine in its maximum power range, Dual Range offers twice the
number of different gears to easily move you to the closest gear
necessary for your immediate needs...all with a push of a button.
The
overdrive unit gives you twice as many higher gear ratios than
you originally had for more pulling performance, while the
underdrive gives you twice as many lower gears for that extra
power you need to get your weight moving easier with less
throttle. Whichever unit you choose, you will improve economy, and
decrease wear and tear on the engine. So which one is right for
you? Let's take a look at the different issues specific to
motorhomes, trucks and vans.
Specific
Truck and Van Issues
Trucks and vans that pull trailers, whether gas or diesel,
automatic or stick, are distinctly different from motorhomes,
because their loads can be dropped. This means that sometimes
you'll be heavy while other times you'll be light. And because
your engine produces its best power in a narrow rpm range,
you will need the flexibility of numerous gear ratios to keep it
running in the "sweet spot". If you own a newer model truck with
an automatic transmission, chances are it came standard with an
overdrive. But if you are towing really heavy loads, the OE
overdrive may be too high even with the tremendous horsepower and
torque produced by the engine. Even the original equipment
manufacturers tell their customers NOT to pull heavy loads with
it. Under this set of circumstances, you will need to add the Dual
range to either replace, or lower the factory overdrive ratio to
give you the power and economy you are looking for.
By selecting the proper Dual Range unit to complement your
existing gear ratios, you can finally enjoy both low speed power
and high speed economy. Our tech department can help you decide
what is right for your set of circumstances.
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Specific
Motorhome Issues
Gasoline powered motorhomes with automatic transmissions are
extremely heavy and continuously get heavier as amenities such as
slide out rooms, washers, dryers and even the family sedan are
added. They already come equipped with an overdrive providing the
needed high gear ratio, but don't have low gear ratios for
climbing the hills quicker and with less throttle; not to mention
engine retarding for coming down the hill. Throw in the fact that
you can now drive faster due to speed limit increases, and you've
really got some complications. You obviously need a Dual Range
underdrive unit. And by adding this low range unit, the factory
transmission becomes a real pleasure to use. Not only do you gain
the pulling power so useful for towing, you're actually able to
use that power in the factory overdrive mode.
How
To Use The Dual Range
Nothing could be easier! An electronic control module mounts
directly to the gear shift lever and permits precise control of
the Dual Range Auxiliary Transmission. While the unit is
electronically controlled, you will hear it shift mechanically as
do big over-the-road commercial trucks. And it's this simple; keep
the unit in the low range position when you are driving in
mountainous regions or when heavily loaded, and shift to high when
you're cruising on the interstates. Or, you can shift the Dual
Range as you're shifting the primary transmission to split your
existing ratios.
And
the Dual Range Is a Real Work Horse
From the very beginning; the Dual Range was designed for towing
extremely heavy loads. With a GVCW rating of 35,000 lbs and a
torque capacity of 2000 ft lbs, the Dual Range has the strongest
guts in the industry. It was specifically designed to use in
either 2-wheel or 4-wheel drive, forward or reverse, both uphill
or downhill compression braking, and at any speed. There simply is
no limit to how and when to use the Dual Range. Again, no other
auxiliary transmission manufacturer can make that claim.
Applications
Available
Pick-ups, vans, cab-chassis, class C or the very popular class A
motorhomes, two-wheel or 4-wheel drive, We've Got Them All! We are
adding popular new applications as soon as they become part of the
towing world, so stay tuned!
Call our technical support department; tell them what you have
and what or where you feel you need improvement. Chances are, they
already have a solution.
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