Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
MMD > Archives > June 2017 > 2017.06.17 > 08Prev  Next


Jesse French String Driven Tracking Mechanism
By John Grant

Scotty Greene inquires about "string driven tracking mechanisms".
These are frequently called "fishing line trackers" with good reason:
that's the best material to replace a broken or missing original with.
However, _avoid_ "monofilament" type line which is typically a plastic
of some formulation and will frequently form a "curl set" if left
inactive for long periods.

I believe my small reel of the stuff, which will last me the rest of my
rebuilding days, is a very light (50-pound test?) nylon multi-filament
line.  Probably the lightest gauge/smallest diameter you can buy will
be adequate.

Let the "arm" travel to its maximum excursion, measure the distance to
the pulley and cut a piece about an inch longer.  Tie the knot at the
pulley in such a way so as not to impede the line winding up smoothly
on it.

No calibration or adjustment (of the string) is necessary.  It will
wind up to the optimal point whereupon the friction clutch will begin
to slip and winding stops.  In my experience, they make some of the
most accurate trackers there are, even single-sided models.  Good luck.

John Grant


(Message sent Sat 17 Jun 2017, 22:57:33 GMT, from time zone GMT-0700.)

Key Words in Subject:  Driven, French, Jesse, Mechanism, String, Tracking

Home    Archives    Calendar    Gallery    Store    Links    Info   


Enter text below to search the MMD Website with Google



CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2024 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Please Support Publication of the MMD with your Generous Donation

Pay via PayPal

No PayPal account required

                                     
Translate This Page