​
wheel radius m
0.085
crank turns/s
1.2
open melody string length m
0.36
melody tension N
42.
melody linear density kg/m
0.0016
tangent semitone index
7
drone string length m
0.48
drone tension N
55.
drone linear density kg/m
0.0045
trompette bridge mass kg
0.004
crank impulse relative
0.35
bridge mobility relative
0.6
friction coupling relative
0.45
Hurdy-gurdy reference-only parametric model
instrumenthurdy-gurdy,packetRound 8 Wolfram build-packet model,modelNameWheel-bowed string, tangent, drone, and trompette relationships,authorityreference_only,wolframVersionTarget14.3
stopped melody length (m)
0.2403
computed melody relationship (Hz from estimates)
337.16
computed drone relationship (Hz from estimates)
115.16
wheel surface speed relationship (m/s)
0.641
trompette response index (relative)
23.625
Every displayed value is computed from estimate placeholders only; pending measurement, not fabrication authority.