# Hollow or solid? v.swaybars

**URL:** <https://forums.speedlife.net/t/hollow-or-solid-v-swaybars/18928>\
**Category:** NYSpeed Automotive\
**Created:** [October 17, 2006, 1:21pm UTC](https://forums.speedlife.net/t/hollow-or-solid-v-swaybars/18928 "2006-10-17T13:21:16Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [October 17, 2006, 1:51pm UTC](https://forums.speedlife.net/t/hollow-or-solid-v-swaybars/18928/6 "2006-10-17T13:51:53Z")

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> [@LAFENGAS](#):
>
> no, there is a difference…but you need more of a comparison that just “hollow” versus “solid”… like size.
> 
> A solid shaft is stronger than a hollow shaft of the same diameter but may be weaker than a hollow shaft of the same weight (same amount of steel for a given length). There is only one design for a solid shaft but the inside and outside diameters and thickness of a hollow shaft can be optimized to transmit maximum torque

you sure about that… torsional stiffness is typically a constant. 0,0 intercept… So you can make a solid bar behave in exactly the same manner as a hollow bar… it’s just a matter of cross section design… But you aren’t going to get it to behave as anything other than a linear spring… however, like i said before, this is strictly for torsion… bending is another story. A hollow bar will be “stronger”, but from a performance standpoint, they are more or less alike…

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