At 07:56 AM 3/6/2008, you wrote:
Thank you, Chris, Matthew and Simon, for your help.
Good things to think about, there. I think the fact that the neck of
the knob I have isn't tall enough is probably a bigger issue than
the diameter, though it is also too small. I believe I'll go with
1.5" (3.8 cm) diameter and 2" (5.1 cm) overall height including
neck. Hmm, the height of the knob itself.... less than an inch (2.5 cm)...?
Matt, I can't picture what the "1/8 inch gap between the inner end
of the knob and the crank" means. Please explain a little further,
if you think it an important point.
All the best,
Barbara
Sure, Barbara.
The shaft on which the knob turns sticks out about 1/8" before its
threads (which hold it to the S-shaped crank) begin. So when the
knob shaft is screwed tightly into the crank, that gap remains
between the crank and the knob. If there were *no* gap there at all,
the knob would rub against the crank when you played. It's important
in that respect, of course, but otherwise as long you can play
without your fingers striking the crank, and as long as the knob is
comfortable and rotates freely with no "looseness" or rattles, it
should be fine.
Does this help?
~ Matt
