Tension Increase from 34" to 35" scale

[Randyt]

Sorry if this has been posted before, but could not find any information

Will there be any significant string tension increase from a 34" scale to a 35" scale bass.
and if so how much?

I pulled some tension info from Circle K strings where a .124" (B string) has 32lbs tension...if this is presented on a 35" scale bass..will it go up ..ie 37lbs.

Thanks for the input

[ixlramp]

See the explanation of tension at http://www.daddario.com/upload/tension_chart_13934.pdf
Tension = U * (2 * L * F)squared / 386.4 where L is scale length in inches
Therefore tension is proportional to L squared. So from 34" to 35" the tension is multiplied by (35/34)squared = 1.0597. An increase of 5.97 percent.

The Circle K Strings tension chart is for a 34" scale, to calculate tension for scales other than 34", multiply the tension value by (your scale in inches / 34) squared.
The tension values are divided into diagonal regions, each diagonal region corresponds to a particular octave. Starting from the small triangular region in the bottom right corner and working upwards, the octave numbers are: 00, 0, 1, 2, 3, 4.

[seanm]

To be honest, I did not notice any extra tension on the 35" scale bass.

[darkstorm]

No significant increase in tension between 34 and 35 scale.

[J Lund]

ixlramp said it best. There will definitely be an increase in string tension from 34" to 35" scale length. Whether 6% is significant to you...well, that's your call. You can also increase the tension by using a larger gauge string or by tuning to a higher pitch.

[FunkMetalBass]

In the Circle K thread, I posted an interactive tension guide that allows you to change the scale length so that all tension follows suit.

Just pulling the figures for you, a .124 string tuned to B0 on a 34" scale has 32.85 lbs. At 35", it has 34.81 lbs.

EDIT: I've attached the spreadsheet to this post as well.

[Randyt]

thank you for the input...

[knuckle_head]

Roughly 2.5 pounds - about one gauges' difference.