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Topic: Difference Between Pull/Release and Push/Pull? |
Joe Breeden
From:
Virginia, USA
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Posted 9 Jul 2021 2:19 pm |
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| I know nothing about Pedal Steel.. What is the difference between Pull/release and Push/pull systems. Thanks in advance for your help. Joe |
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Ian Rae
From:
Redditch, England
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Posted 9 Jul 2021 3:30 pm
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Very, very simply -
Pull-release - the pedal action pulls the string to raise its pitch, and when it's released it returns under its own tension.
Push-pull (which is really pull-push) - a double mechanism with a pedal working as above and a knee lever working in the opposite direction. Being able to raise and lower the same string was a major development.
Both systems have been superceded on pro instruments by the much more flexible all-pull system, but many consider that the old methods were tonally superior.
_________________
Make sleeping dogs tell the truth!
Homebuilt keyless U12 7x5, Excel keyless U12 8x8, Williams keyless U12 7x8, Telonics rack and 15" cabs |
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Donny Hinson
From:
Glen Burnie, Md. U.S.A.
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Posted 17 Jul 2021 6:34 pm
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| In addition to what Ian said, the pull/release guitars have a changer with one piece fingers; it's a simple lever design. Push/pull and all-pull guitars have a changer with a finger composed of two or more pieces; a system of compound levers. |
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Ian Rae
From:
Redditch, England
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Posted 17 Jul 2021 10:56 pm
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Yes, and it's that single solid piece of metal that gives the pull-release its fine tone.
_________________
Make sleeping dogs tell the truth!
Homebuilt keyless U12 7x5, Excel keyless U12 8x8, Williams keyless U12 7x8, Telonics rack and 15" cabs |
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Ian Worley
From:
Sacramento, CA
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Posted 17 Jul 2021 11:06 pm
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A push-pull changer is simply a pull-release changer where the "release" is achieved by "pushing" the lowering stop
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All lies and jest, still a man hears what he wants to hear and disregards the rest - Paul Simon |
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Ian Rae
From:
Redditch, England
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Posted 18 Jul 2021 12:13 am
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It was the next logical step. On the pull-release, the lower note (the release) is tuned with a screw. On the push-pull that stop is replaced with the movable second finger so that it can be user-operated.
_________________
Make sleeping dogs tell the truth!
Homebuilt keyless U12 7x5, Excel keyless U12 8x8, Williams keyless U12 7x8, Telonics rack and 15" cabs |
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