Just joined this group, and I'm excited to learn from all of you scattered hurdy gurdy enthusiasts. I am currently planing my own hurdy gurdy design. I'm going adapt a old cello body to make a large musical furniture piece with legs. I would like to use cello strings for a deeper tone than a conventional hurdy gurdy but this leaves me with some critical design questions. Here are three of the more important ones...
1. Wheel Diameter/Thickness: If I'm using a longer vibrational length of string would it be wise to use a larger diameter wheel? I would think it takes more energy to get the string humming and thus I should use a larger diameter so that the outside edge of the wheel has a higher speed. Should the thickness of the wheel be increased as well? Say an 8" diameter with a 1 1/2" thickness? 2. Wheel Placement: Ive had a very difficult time finding a rule for what fraction of the string should be between the center line of the wheel and the bridge. I have examined some plans and found a range of variable distances people use. Should I scale up existing plans for the longer string, or is this distance generally constant for all string lengths? 3. Handle radius: Is there any rule for the radius of the handle as compared to that of the wheel? This is obviously not as important because I can quickly change out the handle if its just based on user comfort/style. Thank you in advance for taking the time to read my questions. I would appreciate any incite you have no matter how brief.
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