I've been repinning the reps on our Hamburg D. I pull the spring out of the spring groove and test with a gram gauge...usually 0 to 1 gram. I pinning around 6 grams but how accurate does that have to be? What range can I be in...? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Richard Brekne" <ricb at pianostemmer.no> To: caut at ptg.org Received: 8/24/2009 1:37:52 AM Subject: Re: [CAUT] CAF >Hi Mark.. >Yes... I like the jack a bit looser then the rep lever... but it kinda >has to be tight enough to handle the tension on the spring correctly. >It has to move very quickly and firmly in to be sure... but not more so >then is needed to do the job... otherwise you end up with alot of noise. >Jack slap back noises are fun enough to keep under control as it is if >you get my meaning. To be sure tho... seasonal over tightness is to be >avoided :) >Erics advice has been invaluable for me as well. I liked his last >adjustment for let-off and drop... he fudged on the sacred jack /core >knuckle line just a smidgen. This after a very very fine regulation mind >you... so he could get away with it to the actions benefit and not to >its detriment. >Cheers >RicB > Ric, for awhile I set rep springs on the very light side (and found > an ally in Richard Davenport) but in past years... well heck, I've > pretty much come to agree with everything you said below. > In Canada, Yamaha techs go to Japan rather than the Little Red > Schoolhouse for furtherance, and apparently their mantra for rep. > springs is "Bass like an elephant, tenor like a mouse, and treble > like a cricket..." ;>) > Anyhow, all I can add, is that I prefer the jack pinning fairly > loose. Even though in most cases the spring is shared with the > (tightly-pinned) lever, I'm several times more paranoid about a > jack-center seizing during seasonal change. > Regarding repetition lever height, I value the time (and patience) > Eric Schandall invested back at Steinway, teaching me to feel the > jack return under the knuckle, this remains my favourite final check. > best regards, > Mark Cramer
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