Sugi Hara light bars, could they be lighter?

[Fordiesel69]

If you look at the white ovals that are basically epoxy filled on the 36in bar, is there a reason why they don't continue them down the bar further to reduce more weight. My new bar is no doubt lighter than a regular version but in no way it is light in my opinion.

 

[Fordiesel69]

Here you can see tsumura has lightened the bar the entire way down to it's mount.

 

[nedsim]

If you look at the white ovals that are basically epoxy filled on the 36in bar, is there a reason why they don't continue them down the bar further to reduce more weight. My new bar is no doubt lighter than a regular version but in no way it is light in my opinion.

My guess: Because the cutouts reduce the reduce the resistance to bending (both springiness and permanent deformation) in the horizontal plane, and the potential for bending is greatest near the bar mount. The Tsumura seems to deal with that by having smaller, staggered holes. The effect of the cutouts on bending in the vertical is negligible.

 

[huskihl]

Sugi has always been known as one of the heavier lightweight bars