rh wrote:
The shortest scale OM i've seen commonly available is the Trinity College at 20-3/8". I may be mistaken but i think this scale will not give you a lot of projection in the GDAE tuning unless you raise the action, making it not only an uncomfortable stretch but also more difficult to fret.
I'd like to find a tenor banjo with a shorter scale length. One nice thing about banjos is that you can sometimes modify the neck angle to permit a higher bridge without changing the action.
I was thinking that an octave mandolin could be built with a slanted neck from the beginning--like John Duffey's "Duck" mandolin. I was also worrying that supporting the top under increased tension could be a challenge. Digging around a little, I see that Sobell octave mandolins (and citterns) combine an angled neck and an arched top on an instrument with a 23" scale. (See
http://www.sobellinstruments.com/ and look under Citterns in the menu at the left.)
The question is whether something could be designed to have a scale length under 20" and still produce decent volume with strings at optimum tension.
I know too many tunes on mandolin to want to re-learn them in a different fingering. Besides, many fiddle tunes are really sort of designed for that tuning. So, I want to go down an octave, but I don't want to pay the price of a long finger stretch. Otherwise, I might as well just stick with guitar. (Or banjo guitar, if I could find one I really like.)