[Bell Historians] Chime clapper play

[D Cawley]

charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

1. As Carl said, in connection with tracker bar/roller transmission, so wi=
th directed quadrants, it is essential to ensure that everything is lined u=
p correctly. It is sensible to have two people present so that one can dep=
ress the clavier baton whilst the other is working by the bell. Check that=
the quadrant stanchion is tight on its bearer and that it is correctly ali=
gned with the direction of the clapper.

2. If the quadrant seems to be correctly aligned with the proper direction=
of the clapper, and all seems not to be well, uncouple the clapper from th=
e flight wire (or the latter from the quadrant) so that the clapper hangs v=
ertically and centrally in the bell. Check that it does. Check also that t=
he crown staple nut is tight, and if not tighten it with your assistant hol=
ding the clapper against the bell in line with the direction of the quadran=
t.

3. With the clapper hanging free and the staple bolt tightened, check in t=
he usual way for excessive wear in the hinge pin / bush. Reconnect.

4. Have your assitant depress the baton to see that all is working well abo=
ve. With regard to the fall of the baton within the clavier, check the adju=
ster above the clavier, if fitted.

Hope this helps cure or locate the problem. For conventional transmission =
follow Carl's advice in the way indicated.

If this doesn't work, send for David Potter, and if he can't fix it then it=
's a job for Taylors.

DLC
----- Original Message -----=20
From: David Bryant=20
To: bellhistorians at yahoogroups.com=20
Sent: 25 August 2002 23:23
Subject: Re: [Bell Historians] Chime clapper play


From: "Carl S Zimmerman" <csz_stl at s...>

> However, if the excess clapper play is due to uneven wear of the
> clapper bearing, such that the clapper no longer has a "preferred"
> direction of travel, then immediate rebushing is indicated.
>
> If the clapper and transmission are out of alignment, but the
> looseness in the bearing is uniform, then turning the bell and/or
> shifting the transmission crank along the roller bar to achieve
> proper alignment should give satisfactory results. If so, then
> rebushing can be postponed.

Out transmission has quadrants, not roller bars, and the problem is that =
the
baton travel for one of the bells (the one with an exceptionally loose
clapper) is often (but not always) reduced dramatically, and the reason
seems to be that the clapper is still well off-centre, having swing there=
at
the previous stroke, and is thus nearer to the bell and hits it too soon.=
A
number of the other clappers are loose, although not so much as this one.
Anyway, I've emailed Andrew Higson at Taylor's asking for his advice, but=
it
does seem likely that we will need to rebush most of the clappers.

David


This message was sent to you via the Bell Historians' Mailing List. To un=
subscribe from the list send an email to bellhistorians-unsubscribe at yahoogr=
oups.com



Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.=20

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ringingworld.co.uk/pipermail/bell-historians/attachments/20020826/5f5547db/attachment.html>