go to a builders merchant and get a lead sheet for guttering. cut a piece off and roll it up tight to jam inside your bars. on second thoughts that is maybe too simple a solution.
I already have the OEM steel end weights. They help but not enough so just making them heavier is unlikely to do what I need.
It's not just about the bar end mass weight.
Lead is heavier than steel but not as much as people expect. It is though very soft so a cast lump simply bolted to the the end will quickly compress and rattle loose.
Lead shot 6.8 Kg per litre.
Solid lead 11.34 kg per litre
Steel 8.05 Kg per litre
Pouring molten lead into the bars sounds fab and it will add lots of weight but there is no energy absorption. It will also not do anything at the grip end because that's where the sleeve anchors are. Finally the tube walls are thick so not much mass can be added.
Fast Company have a brass rod insert that's rubber mounted into the bar end. It's supposed to move and absorb vibration but I'm not paying £60 plus delivery to find it only does 1/2 the job (as the Rox risers have).
Fasst Company also have vibration absorbing handlebars with polymer bushes. They are around £300 a pair but work in a vertical direction only. The Beemer shakes horizontally.
Vibranators are another idea. They are a turned steel bar end weight that also mass fills the bar tube under the hand grip. Maybe, but it's also expensive for what it is.
Bar snake sounds good but I couldn't find any useful information on their web site. It's all very mystic.
A dead blow hammer uses lead shot inside the hammer head to absorb the bounce.
I'm hoping to get the same effect. The shot won't be packed tight so the individuals balls can move and absorb energy.
The total mass will be close to solid steel so I'm gambling the movement of lead shot will be the big benefit. If it fails total cost will be about £40.
Sent somehow.