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products
JB
Conversions LoMax 300 Dana 300 4:1 Gear Set
Some information by
JB Conversions
The LoMax
gear set has been designed to achieve maximum gear strength
and the lowest possible reduction ratio for the Jeep Dana
300 transfer case. For over 2 years, the LoMax gear design
effort has been an independent project of JB Conversions,
Inc. and bears no affiliation with any other aftermarket
gear manufacturer. The LoMax design features that set it
apart from others are incorporated into all areas of the
gears. Tooth volute shapes and face finish, gear hub
thicknesses, and manufacturing tooling & processes yield a
gear set far superior to any other gears being produced for
the Dana 300. The LoMax gears were designed as a complete
5-gear "set" from the very beginning. This means there were
no strength-limiting tooth size restrictions forcing the new
gears to mesh with smaller stock gears. As you will see in
the accompanying photo comparisons, the result of this
"clean slate" philosophy is a set of gears with massive,
helical gear teeth with tremendous strength capacity.
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Another practice
commonly used in aftermarket gear production is one
that we have chosen NOT to adopt. This
practice involves the use of two piece gear
construction. Several of the gears used in competing
gear sets are manufactured using a process which
calls for pressing and welding two gears together to
form one piece. This two-piece process allows for a
more simple manufacturing process and much cheaper
gear cutting tools. The strength of a solid gear
over a comparable sized two-piece gear is
indisputable. All LoMax gears are cut from a single
slug of alloy. The cutting tools required for this
type of construction are extremely expensive however
we feel the benefits are well worth the investment.
LoMax
300 parts breakdown |
The LoMax
gears are not entirely new. They have been proven without
fail through the rigors of western rockcrawling and the high
throttle abuse characteristic of the Tellico area of North
Carolina. The LoMax gears are compatible with both the long
and short tail versions of the Dana 300. Although not
required, it is highly recommended that a complete rebuild
accompany the installation of the LoMax gears. Supplimental
rebuild kits are available from JB Conversions, Inc.. New
detent springs are also supplied with our gear kit. We have
found in many cases that twin stick applications will create
a tendency for disengagement of the clutch rings while under
load. Often this condition is amplified with the
installation of lower range gears. For this reason we
recommend the use of the two detent springs supplied in the
kit.
The track
record of the LoMax gearset has been excellent. There has
not been a single gear failure regardless of the severity of
use. Western rockcrawling competitors use our gears as well
as many of the heavy footed folks who power their rigs
through the rigors of Tellico N.C. and the mud bogs of the
Northeast.
When the
LoMax gears were prototyped in 2000, the intended use was
strictly hard core abuse. Our gears were tested in the rigs
shown below. 39.5" and 44" tires accompanied with two hot
small block Chevys and a hopped up AMC 401 put our gears to
the test and they all passed without a flaw.
Contact
JB Conversions
for more information
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