<div class="gmail_quote">On Wed, Feb 20, 2008 at 8:46 PM, Jurgen Goering <<a href="mailto:pianoforte@pianofortesupply.com">pianoforte@pianofortesupply.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
I am planning to get Charles to make me a custom tuning lever using<br>
some ebony I have. I was just thinking of getting his standard (up<br>
to now) titanium shaft. Do you think the carbon shaft is that much<br>
superior? </blockquote><div><br class="webkit-block-placeholder"></div><div>You'd have to run some calculations to determine flex (deflection) for both shafts. That would provide some hard numbers to compare to rather than going by feel alone. </div>
<div><br class="webkit-block-placeholder"></div><div>Some time back, I did some head-scratching for making a lever, and came up with a deflection calculator for different shaft configurations. I can easily plug the dimensions of the titanium and CF shafts in my deflection spreadsheet and see what deflection would look like on paper. I would need lengths and diameters, and the wall thickness of the CF tube. It would calculate only the deflection of the shaft, and would not factor in handles or heads.</div>
<div><br></div><div>I remember (I think) that you really need at least a 1" CF tube to get significantly better deflection than a steel lever of the same length. (Assuming solid steel around 7-8" and around 5/8" in diameter.) The Fujan is 1.25" OD. The Faulk is half that, which means the deflection would be more. However, the length of the tube appears shorter. Which means that deflection might not be so bad. It might not even be an issue. I'd be glad to run the numbers since I have already worked through the stinkin' formulas. :-)</div>
<div><br class="webkit-block-placeholder"></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">The head on the carbon tool seems a bit big and bulky (it is<br>
a lot bigger than on the titanium shaft) - does that interfere with<br>
sight lines when moving the tool for pin to pin?</blockquote><div><br class="webkit-block-placeholder"></div><div>I definitely get that with the Fujan. But, since it is so light, I work around it. Light is so much enjoyable to work with.</div>
<div><br></div></div>-- <br>JF