Klarinet Archive - Posting 000187.txt from 2011/08

From: sfdr@-----.com
Subj: Re: [kl] Rant against a trend in pad work
Date: Fri, 19 Aug 2011 22:16:26 -0400

Hi Keith,
I do used both the vacuum and Mag test when checking for leaks. The Lohff pad clarinet played quite well and so did the corkpad overhaul.
As for the best pad fit, the more margin you have outside of the pad seat, the more stability you have. If you have an 8 mm pad seat and a 9 mm straight pad, then there is only a 1/2 mm margin which can curl or collapse over time. This problem can occur with any material including cork or felt. Hans Moennig used T shaped pads which rested on the pad cup rim. This Moennig design allows a margin 2 or 3 mm outside of the seat. This Moennig pad design is especially helpful for the large throat A tone hole pad seat.
As for the Angle of the pad, Moennig would cut the cork pad to match the relationship of the key to the tone hole. If the old pad was floated on an angle the the cork pad would be cut to match that same angle. Mr. Moennig would put enough shellac in the key cup to ooze over the rim to float and hold the pad margin in place. I do center the and cup over the tone hole but I usually don't worry about the paralellism because I float the pad in place with extra shellac.
This week, I will order some of the Valentino pads to try.
Thanks,
Alvin Swiney

-----Original Message-----
From: Keith Bowen <keith.bowen@-----.com>
To: 'The Klarinet Mailing List' <klarinet@-----.com>
Sent: Fri, Aug 19, 2011 10:03 am
Subject: Re: [kl] Rant against a trend in pad work

Hi Alvin,

I'm curious - if you have a Mag machine, why do you not use it instead of
vacuum testing? I am sure the Moennig-style pads sealed extremely well, but
a low pressure test is closer to the playing situation. By the way, how did
the Lohff clarinet play in comparison with the Buffet?

It's correct that for these pads there is no shoulder to rest on the rim of
the key cup. The dimension of the pad is the inside of the cup. I by no
means wish to belittle your enormous experience, but isn't it true that the
shoulder of the pad cannot rest uniformly on the rim of the pad *after*
floating and alignment of the pad? Or do you adjust for parallelism by
mechanical alignment (bending) of the cup alone?

I've had no pad warping or deterioration on my basset horns after 7/8 years.
I don't know what Hasty or Gigliotti used, sorry.

Forest has already replied on the 'sheet' misunderstanding. Your opinion on
the real Valentino pads would be most interesting.

Keith Bowen

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