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Older Hammonds, including some B/C-2's and all previous models have "ratchet drawbars". These are so named because the physical detents between drawbar settings are more pronounced (or "clicky") than on later "smooth drawbar" models. More importantly "ratchet drawbars" suffer from designed-in "drawbarus interruptus": if you adjust a drawbar while playing a note, the sound drops out completely between settings.

To overcome this problem, many people salvage smooth-style drawbars from junked later-model organs and put them into older organs.

A retrofit kit was announced around 2004, reportedly for around $300. The websites related to it are no longer functional.


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