The following is a
list for the recommended truss rod sizes for various musical instrument
setups. This list is simply meant as a cross reference and it's not
intended to be an engineering or technical selection for individual
setups. Truss rods construction and lengths vary greatly from
Manufacturer to Manufacturer and builder to builder. Another factor that
enters into the equation is the type of wood and skill set of the
builder to shape and prep the neck for overall performance.
list is done as a guide for your assistance. We have received numerous
questions over the years on various setups and rods for the application.
general we have opt'd to work mainly with two way or dual action type
rods. For the most part they fit almost all applications for building,
but offer the flexibility for two way adjustment instead of single
direction. This allows the builder the most options and adjustment for
correction or playability of the guitar, bass, mandolin or other
Any feedback on this list is great appreciated. We
collaborate with many builders to hone in on the best solutions for
Just a quick note on the different rods we offer:
Two Way Rods:
1. Dual Action.
This rod is threaded at each end and works be pulling the rod in
different directions either toward the center of the rod or away from
the center. It allows the top and bottom part of the rod to move away
from each other and apply pressure up and down at the same time to
adjust the neck
2. Two Way. This rod is welded
together on one end and threaded on the other end with a metal cap
welded over the threaded nut. This allows the nut to push against either
the rod or the end of the cap causing the entire rod to flex in one
direction to allow adjustment. The nut is covered completely by the
welded cap and turns inside the cap. Do not remove this cap, it is part
of the design.
Carbon Fiber Rods:
1. Carbon Fiber.
Clearly a very light weight and extremely strong non-adjustable neck
reinforcement. This rod can be used in combination with a metal truss
rod or one or two additional carbon fiber rods in the neck. It allows
for very consistent and very straight necks, however, it does require
the build to be very precise and consistent, there is not an adjustment
once this is installed unless you add a two way or dual action rod to
the build. 1.5 million PSI breakpoint and extremely light weight. This
is a great option for bass guitars.
Again, this list is simply suggestions for your use. Your specific applications may vary depending on your needs and designs.
Dual Action Rods
Instrument setups for this rod
Electric Mandolin, Baritone Ukulele, Short scale guitar