Bill Ballard wrote: > And if this device is ready (as it appears) to read a key from a real > action, then it should be no great leap to add a weight to the capstan > equal to the Top Action Weight and read the MOI for the entire lever train. Bill, No, that wouldn't do it. If you had been following our discussion about reflected MOI you would see that you need to consider the relative angles the parts go through in relation to the key. This tool is used to measure the MOI of individual parts but you need to do a little math to find the total MOI. John Hartman RPT John Hartman Pianos [link redacted at request of site owner - Jul 25, 2015] Rebuilding Steinway and Mason & Hamlin Grand Pianos Since 1979 Piano Technicians Journal Journal Illustrator/Contributing Editor [link redacted at request of site owner - Jul 25, 2015]
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