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Topic: Why 4 tuners on bass side and 3 on treble? |
Darryl Hattenhauer
From:
Phoenix, Arizona, USA
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Posted 27 Oct 2012 10:08 pm |
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My 7-string string Sho-Bro has four tuners on the bass side. Since the treble strings don't pull as hard, wouldn't it distribute the stress more equally to have four on the treble side?
_________________
Steel crazy after all these years.
$100 reward for info leading to the purchase of a fender D8 white, yellow, or butterscotch. |
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Robert Murphy
From:
West Virginia
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Posted 28 Oct 2012 7:35 am
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| The wound strings have a smaller solid core which doesn't pull as hard as the treble strings. Check out D'Addario's web sight for string tension information. |
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L. Bogue Sandberg
From:
Chassell, Michigan, USA
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Posted 28 Oct 2012 7:35 am
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It's for tuning convenience. I have two McKenna resonator guitars, a seven and an eight string. The seven is set up as you noted. The last tuner on the bass side is an easy reach whether playing standing or sitting. On the eight, my short arms make tuning the farthest treble side tuner impossible while standing, unless I pull the guitar out of playing position.
The added stress is not significant. On my guitar, I calculated about 40 psi of additional cross-neck bending stress at the nut. Given that clear mahogany has a short term bending strength north of 10,000 psi, even with a large factor of safety and an allowance for sustained stress, it shouldn't be significant. (Disclaimer: I retired from teaching structural engineering five years ago. Brain rust is a factor!)
Bogue |
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John Bushouse
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Posted 28 Oct 2012 7:36 am
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Actually the tension on each string can be about the same, or higher on the high strings. Check out the tension on each string listed on this set of pedal steel E9 strings. TH tension on the high strings ranges from 28.7 - 31.2 lbs, where the lower strings range in the low to mid 20's.
http://www.daddario.com/DADProductDetail.Page?ActiveID=3769&productid=64&productname=PS490_Pedal_Steel_Strings__E_9th
| Code: |
Diameter Tension
Item # Note Inches mm lbs kg
PL013 F# 0.0130 0.3300 31.200 14.150
PL015 D# 0.0150 0.3800 29.400 13.340
PL011 G 0.0110 0.2790 28.100 12.750
PL014 E 0.0140 0.3600 28.700 13.020
PL017 B 0.0170 0.4300 23.800 10.800
PL020 G# 0.0200 0.5080 23.300 10.570
PSG026 F# 0.0260 0.6604 24.300 11.020
PSG030 E 0.0300 0.7620 26.800 12.160
PSG034 D 0.0340 0.8636 26.600 12.070
PSG038 B 0.0380 0.9652 22.900 10.390 |
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Darryl Hattenhauer
From:
Phoenix, Arizona, USA
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Posted 28 Oct 2012 3:04 pm
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Doh! I always assumed that the heavier the string the higher the tension.
_________________
Steel crazy after all these years.
$100 reward for info leading to the purchase of a fender D8 white, yellow, or butterscotch. |
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Jim Bates
From:
Alvin, Texas, USA
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Posted 31 Oct 2012 4:49 pm
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My original factory made 7 string Dobro has 4 on treble and 3 on bass. Also, the neck is a 7 string neck. So there are differences.
Thanx,
Jim |
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