On some instruments 1/4 of a turn could have quite an effect on the relief. This is a situation that requires physical examination to determine the best course of action.Īll adjustments to truss rods should be done in small increments. If, however, the neck shows itself to be weak and spongy, satisfactory results may not be obtainable using that method. When these can be repaired, fingerboard planeing and refretting with large tang fret wire is used to straighten the neck. My truss rod is as tight as it will go and the neck still has way too much relief in it.Ī maxed out truss rod is quite a dilemma. In general, very light gauge strings may require additional relief due to their wider vibration pattern which may permit them to hit the frets and buzz when strummed hard. Some mandolins many never budge and others may require frequent adjustments until the neck settles in. The amount a neck will change is as unique to that instrument as the wood used to make it. Necks that change frequently or are subject to humidity and temperature changes may serve the player better if a small amount of relief is present to counteract those changes. Most mandolins will play cleanly with a near dead flat neck. When a truss rod is loosened it is allowing the string tension to pull the neck upward (into a bow). 1/4 of a turn can have quite an effect on some necks. Tightening the truss rod nut counteracts the pull of the strings, straightening the neck.Īll adjustments to a truss rod should be done in small increments and re-checked. Most mandolin truss rods are accessible beneath a small cover found on the peghead.
#Kentucky mandolin truss rod adjustment free#
You may also place a capo on the first fret to free one hand to take measurements with a feeler gauge. You can now judge (or measure) the gap between the bottom of the string and the fret halfway between the two. With the mandolin tuned to pitch fret the G string at the first fret and with your opposing hand fret the last fret on the neck (not the one over the body). You can also use the string as a straightedge. Checking The Necks ReliefĪ straight edge can be placed down the center of the neck, while tuned to pitch, to determine the amount of relief. This mandolin neck which has no adjustable truss rod.Īs the tension from the strings strive to pull the neck upward, into a bowed shape, the truss rod is used to exert tension in the opposite direction.Ī bowed neck, with too much relief not only raises the string height (action) it can also change the intonation. Lacquer finish in a traditional 1920’s sunburstĮbony fingerboard with M.O.P.Multiple pieces of laminated wood were used to strengthen (and decorate)
One-piece maple neck with dovetail neck/body joint at the 15th fret Solid, flat-sawn, hand-carved select flamed maple back and sides Solid, hand-carved and graduated spruce top
Very much like the Classic Era American Mandolins of the early 1920s. The Kentucky KM-900 is an A-Model Mandolin that features the same select, solid Spruce and solid Michigan flatsawn maple. I might be interested in a trade for an Octave Mando or a guitar($1000-1,200 trade value).
It is in excellent shape- like new except for a few light pic marks.Īsking $750 shipped (ConUS) and Paypal fees. I have for sale a 2012 Kentucky Master Model A-Model Mandolin I am not quite finished with my mando phase yet 2012 KENTUCKY MASTER MODEL KM 900 A-MODEL MANDOLIN FOR SALE
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