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Post new topic 4th string returning sharp on super pro help
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Author Topic:  4th string returning sharp on super pro help
Paul Wade


From:
mundelein,ill
Post  Posted 4 Apr 2020 9:54 am    
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broke a 4th string E9th replace it with 015 gauge
adjusted the travel a little but when i lower it comes back sharp. don't know if it's getting hung up on the raise or what moved the rod up to another hole but still have trouble when i lower the E's i have to bump my knee lever to come back in pitch?? may be the roller nut ?? help.

paul
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Ian Rae


From:
Redditch, England
Post  Posted 4 Apr 2020 11:15 am    
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Various people have reported this problem recently, and the consensus is to check the roller nut first.

Did you have a .014" on before?
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Paul Wade


From:
mundelein,ill
Post  Posted 4 Apr 2020 12:04 pm     Super pro
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Ian
Yes there was a 014 on there before. I didn't have another 014 so I put a 015 on . that might be the problem??

P.w
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Georg Sørtun


From:
Mandal, VA, Norway & Weeki Wachee, FL, USA
Post  Posted 4 Apr 2020 12:31 pm    
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If possible, check...
https://www.gunlaug.com/contents/music/steelguitar-peculiarities.html
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Ian Rae


From:
Redditch, England
Post  Posted 4 Apr 2020 12:47 pm    
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Going up a gauge has increased the tension in the string by about 7%, and the friction at the top of the changer finger and at the roller nut will have gone up by the same factor.

This will worsen the hysteresis effect that Georg describes so well, perhaps increasing it from negligible to noticeable.

If you were happy with a 14 then I'm sure you can be happy again Smile
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Paul Wade


From:
mundelein,ill
Post  Posted 4 Apr 2020 1:18 pm     Strings
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Thanks everyone I think I will go back to 014
Thanks George. And Ian for their knowledge

P.w
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Larry Bressington


From:
The beautiful sunsets of Nebraska
Post  Posted 4 Apr 2020 4:41 pm    
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Do you have some slack in the pull rods for the B pedal raise and the E lever raise? You need a smidge at rest for the rods to float.

Use your hand to home the finger, is it getting all the way home after you release the lever? If was ok with the old string i'll bet the rod nylon adjuster is tight up against the puller scissor, back it off a turn see if returns to pitch.
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Paul Wade


From:
mundelein,ill
Post  Posted 4 Apr 2020 4:50 pm    
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Thanks Larry
Will take a look at that
Stay safe

Pw
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Ian Rae


From:
Redditch, England
Post  Posted 5 Apr 2020 1:00 am    
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I strongly suspect that if you'd had a spare 14 in the house this thread would never have existed Smile
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Paul Wade


From:
mundelein,ill
Post  Posted 5 Apr 2020 3:21 am    
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Ian Rae wrote:
I strongly suspect that if you'd had a spare 14 in the house this thread would never have existed Smile

Your right Smile
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