Bar end weights

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26 Jan 2019 12:02 #797560 by davido
Bar end weights was created by davido
Whats that all about then? Can anyone enlighten me? What is the purpose/point of these things? Do they affect handling? Are they just a styling feature?

www.kzrider.com/forum/11-projects/594313-csr1000-project-build
CB550 (1978)
CB500/4 (1972)*
KZ1000CSR (1981)
XT 600E (1999)
TDM900 (2003)

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26 Jan 2019 12:29 #797561 by Street Fighter LTD
Replied by Street Fighter LTD on topic Bar end weights
Reduce vibration in bars


Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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26 Jan 2019 15:29 #797588 by SWest
Replied by SWest on topic Bar end weights
I injected silicon in my bars and stuffed balance weights in the ends. Cut down on the vibration and my mirrors are better. My hands don't go to sleep as easy but my cruse control lets me give my right hand a break on long rides.
Well worth it. B)
Steve
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26 Jan 2019 17:02 - 26 Jan 2019 17:04 #797606 by loudhvx
Replied by loudhvx on topic Bar end weights
When properly weighted, they can reduce vibration in the bars, but there is a potential downside. If your bike is prone to tank-slapper, the bar-end weights can increase the likelihood of it happening. Most Kz's are pretty stable, but the early standard 550's seem to like to oscillate more than others, and they can go into a bad tank-slapper at high speeds, especially the 81 Gpz550. (Kawasaki redesigned the geometry for 1982.) One way to avoid it is to reduce the steering inertia by taking weight off. This increases the resonance frequency to a speed you hopefully can't attain with the bike. Adding weights at the ends of the bars would be counter to that strategy.
Last edit: 26 Jan 2019 17:04 by loudhvx.

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26 Jan 2019 17:11 #797607 by 650Dude
Replied by 650Dude on topic Bar end weights

loudhvx wrote: When properly weighted, they can reduce vibration in the bars, but there is a potential downside. If your bike is prone to tank-slapper, the bar-end weights can increase the likelihood of it happening. Most Kz's are pretty stable, but the early standard 550's seem to like to oscillate more than others, and they can go into a bad tank-slapper at high speeds, especially the 81 Gpz550. (Kawasaki redesigned the geometry for 1982.) One way to avoid it is to reduce the steering inertia by taking weight off. This increases the resonance frequency to a speed you hopefully can't attain with the bike. Adding weights at the ends of the bars would be counter to that strategy.


The best way to reduce vibration is to get a Honda CB900F like mine below. Less vibration and faster than most KZs. *chuckle*

1977 Kawasaki KZ650B
1977 Kawasaki KZ750 Twin
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26 Jan 2019 17:13 #797608 by SWest

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26 Jan 2019 19:00 #797633 by Street Fighter LTD
Replied by Street Fighter LTD on topic Bar end weights
Unlocked
Back to topic


Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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26 Jan 2019 19:08 #797638 by SWest
Replied by SWest on topic Bar end weights

loudhvx wrote: When properly weighted, they can reduce vibration in the bars, but there is a potential downside. If your bike is prone to tank-slapper, the bar-end weights can increase the likelihood of it happening. Most Kz's are pretty stable, but the early standard 550's seem to like to oscillate more than others, and they can go into a bad tank-slapper at high speeds, especially the 81 Gpz550. (Kawasaki redesigned the geometry for 1982.) One way to avoid it is to reduce the steering inertia by taking weight off. This increases the resonance frequency to a speed you hopefully can't attain with the bike. Adding weights at the ends of the bars would be counter to that strategy.


I didn't think about the tank slapper hazard. Haven't noticed a problem.
Steve

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26 Jan 2019 19:20 #797641 by Scirocco
Replied by Scirocco on topic Bar end weights
To eleminate mirror vibrations you can put mirror rubber adsorber adapters into to your handle bar mounts.

www.louis-moto.co.uk/artikel/mirror-vibr...799231024.1487980295


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26 Jan 2019 19:22 #797642 by Street Fighter LTD
Replied by Street Fighter LTD on topic Bar end weights

Scirocco wrote: To eleminate mirror vibrations you can put mirror rubber adsorber adapters into to your handle bar mounts.

www.louis-moto.co.uk/artikel/mirror-vibr...799231024.1487980295



Those are real neat. Never seen them before


Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

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26 Jan 2019 19:33 #797644 by Scirocco
Replied by Scirocco on topic Bar end weights

Street Fighter LTD wrote:
Those are real neat. Never seen them before


These adsorbers are common solution in the early 90th here in Europa, nothing special here in Germany

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26 Jan 2019 20:09 #797653 by SWest
Replied by SWest on topic Bar end weights
Common in the 70's. Couldn't find them now.
Steve

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