[GreenKeys] Nylon vs. Fiber/steel gears?

[Nick England]

according to that original Navy manual -
TP 151346
Screw, machine: slot drive; FH; steel,
nickel plated; #6-40; approx 7/16" lg o/a;
3/8" lg threaded portion, head 1/16" thk x 7/32" diam

1149B shows this for LMU3

[image: image.png]

Nick England K4NYW
www.navy-radio.com


On Thu, Jan 11, 2024 at 11:43 AM John, W9DDD <w9ddd at tapr.org> wrote:

> Gentlemen, why do you suppose there was the transition from fiber and
> steel gears to nylon?  Noise, cost or other considerations? My guess is
> that the nylon can be molded and therefore less costly to make, but I
> can't back that up with facts.  Noise, I don't have enough experience,
> I'm just now switching a nylon 100 speed pair to 60 fiber/steel pair.
> Will I notice? And if I do will it be the gears or the speed?
>
> BTW have you ever looked to find the right part number for screw that
> goes with the steel pinion?  I never did find it referenced anywhere.
> (no I didn't look at the original Navy manual which even tells you how
> to make your own springs.)
>
>
> --
> ---
> ----
> You said "tomorrow" yesterday.
>
> The above comments or recommendations are SWAG. Use at your own risk.
> John, W9DDD
>
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
>
> >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
> https://teletype.net/gksearch
> >>> 2002-to-present greenkeys archive:
> http://mailman.qth.net/pipermail/greenkeys/
> >>> 1998-to-2001 greenkeys archive:
> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to navy.radio at gmail.com
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20240111/be775af4/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 44342 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20240111/be775af4/attachment.png>