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TOPIC: Bar end weights

Bar end weights 26 Jan 2019 12:02 #797560

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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?

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Bar end weights 26 Jan 2019 12:29 #797561

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Reduce vibration in bars
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Bar end weights 26 Jan 2019 15:29 #797588

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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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Bar end weights 26 Jan 2019 17:02 #797606

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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.

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Bar end weights 26 Jan 2019 17:11 #797607

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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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Bar end weights 26 Jan 2019 17:13 #797608

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:lol: :lol: :lol: :lol: :lol: :woohoo:
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Bar end weights 26 Jan 2019 19:00 #797633

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Unlocked
Back to topic
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Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStopPerformance , 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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Bar end weights 26 Jan 2019 19:08 #797638

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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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Bar end weights 26 Jan 2019 19:20 #797641

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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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Bar end weights 26 Jan 2019 19:22 #797642

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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
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Bar end weights 26 Jan 2019 19:33 #797644

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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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Bar end weights 26 Jan 2019 20:09 #797653

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Common in the 70's. Couldn't find them now.
Steve
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Bar end weights 26 Jan 2019 20:19 #797654

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SWest wrote:

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

Yep... learned the hard way... exited the vehicle in deep triple digits.

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Bar end weights 26 Jan 2019 21:06 #797657

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650dude, I'm pretty sure my KZ would "spank" that wimpy CB900 of yours.
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Bar end weights 01 Feb 2019 05:25 #798017

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loudhvx wrote:

SWest wrote:

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

Yep... learned the hard way... exited the vehicle in deep triple digits.



Same thing happened to my brother on his 81 . Went down on highway doing a 100 plus . Its my bike now . Never had it happen when ive been on it . So whats the best fix for this .
Gpz 750 turbo The one I ride
Gpz 750 turbo Not finished
Gpz 750 turbo Not started
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Gpz 550 1983
Bunch of other junk

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Bar end weights 01 Feb 2019 06:45 #798022

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I understand there is a whole science to tank slappers. Many things can contribute. Hopefully not something Ill have to worry about as I ride like an old lady. The reason for my post is that I wanted to fit a pair of handguards to my daily ride (Bandit 600) as the snow has arrived here in Holland and the hot grips only work on the inside of my hands.I wanted something to cut down on the wind blast. I bought a set of Acerbis guards but to get them to fit,I needed to extend the bars. Hence the question about bar end weights.
I had a set of bar ends from an old Honda which I have fitted and managed to get the Acerbiseses mounted. Not perfect but boy do they make a difference. I would highly recommend them to anybody that rides through the winter.


Yes. I know its not a Kawasaki Am I going to be banned now or do I have to lose my temper,claim its faster than a Z1000 and insult everybody?
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Bar end weights 01 Feb 2019 07:11 #798028

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Id like to see more on how you fitted the bar ends.
No you don't get banned for showing another make or think it's faster than whatever. :dry:
The guy you're referring to already had one foot out the door and the other one on a banana peal. :lol: What sealed his fate forever was his arrogance, dishonesty and frauds. Being a tool isn't an immediate cause for dismissal, in fact it was quite entertaining, for a while.:whistle:
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Bar end weights 01 Feb 2019 07:15 #798029

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Many years ago a friend had a set of "Hippo Hands" on his bike. I rode it in the Winter and found them to work extremely well. Even though that was more than 40 years ago they are still in business. Ed

www.hippohands.com/
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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Bar end weights 01 Feb 2019 08:01 #798030

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Here you go Steve. The mounting instructions that came with them are straight forward. I did have to turn the brake line out of the way a bit but for the rest it went pretty good. The guards themselves are quite flexible so you can twist them about to fit.[/attachment]

they cost about euro90 including delivery from Germany.
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Bar end weights 01 Feb 2019 08:19 #798032

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My winter windshield covers my hands pretty well so I'm covered there. The summer one doesn't but it has less drag so I can MOVE. :woohoo:
Steve

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