Which Kawasaki triple did you have ? I owned the 500 back in the 70's always wanted a Widow maker but they were popular and hard to find back then even more so now . In the 70's I rode Harleys and Kawasaki's I bought the first Kawasaki Z1R to come to Ft Smith Arkansas at the time it was the fastest stock bike made .

 

750 H2.
The venerable Widow Maker, or Quick and Dead, etc.
Truly brutal bike. I'll never forget it. 😆

 

The Yamaha RD'S were bad *** little bikes too. I also briefly owned a water buffalo cool bike but slow compared to the other two strokes of the day .

 

Yep. Had a friend with an R5 Yamaha.
The Water Buffalo was in interesting contrast of a two-stroke triple in comparison to the Kawasaki. A much better behaved bike.
All quickly eclipsed by the inline-4 4-strokes like the CB750 and KZ900 and such.

 

Just picked up my new-to-me 2022 HSC. Took it to 80mph on the test drive, no buffeting or buzz/vibrations. I’m 5’10” and there was plenty of wind but I really enjoyed it. It’s a great bike. Just not sure what folks are meaning by “vibration”, after all it is a motorcycle

 

What bike did you have before the Heritage?

 

For a brief moment I had a Kawi Voyager and prior to that it was my 2016 1200T Sportster

 

I've owned a couple of older Softails and the 2022 Heritage I have now . In the last 10-15 years I've pretty much rode Dynas with a few Sportsters thrown in . Had some others too but just briefly. The Sportster will vibrate more than the Heritage especially the pre rubber mount ones . But the hard mount motor of Softails has more vibration than any rubber mount big twin . My 09 Dyna Lowrider was very smooth 75-85 mph the Heritage has a buzz at those speeds . If you crawled off say a Road King you would notice it instantly.

 

Just noticed the Kawasaki Voyager you said you owned . I took one in on a partial trade the original Voyager with the inline four for a Sportster I had . One ride on it and I think I'm lucky to be alive . There's a corner by our house that has ridges in it fairly good sized . I rode the Voyager through that corner test riding it I swear that bike went into a death wobble from hell it was like it was hinged in the middle . It was so violent it almost through me off the bike scared the hell out of me . I posted what happened on the Voyager forum a few years ago apparently this was a common issue with that particular bike. I put that sucker on the side of the road and came back and picked it up with a trailer .

 

For those of us who don't enjoy the vibrations, I think if Harley or someone aftermarket came out with the original, more effective, engine counter shafts, we'd buy them. Sadly, I don't see that happening.

There are a number of posts of folk finding engine mounting bolts loose and sometimes missing. Addressing this reduces the vibration on their bikes. When I can, I'm going to check mine. Just something that each of us can do in the pursuit of vibration reduction.

Something else would be bar weights. I don't see any good or ready way to install bar end weights on the throttle side. Though a sleeve insert might work on the throttle end, same for those running heat grips to deal with the controller on the clutch side. But something attached to the mirror mounts might help and be easily attached. It also might break things. I may try some experiments at this location with some flat stock or such, just to experiment.

I know part of the issue I have with the vibration through the boards is their size, position and angling. They are too level, a little too low, too close to the bike, and small. It has me often dangling my feet off to the sides of them, defeating the vibration isolating inserts. So extensions to get them out further should help. And maybe some brackets inserted in between the boards and those extensions so I can move and angle the boards. And maybe even trying other boards, like the bigger ones from the touring bikes. I've also thought about experimenting with things on top of the inserts, to move my feet that way. Zip tie things like a wooden board in place to see how it works for me. Something any of us could do as well.

Seats play an interesting difference in the vibration, as well basic comfort. I've run the stock seat, a Reduced Reach Seat, and both Sundowner seats (solo and dual).
The stock seat was ok, but not an all day comfortable seat to me. I could ride it all day, but it wasn't pleasant. I would splay my legs on it, positioning my feet poorly on the boards. It also transmitted some vibration to my butt. Not much, but some.
The Reduced Reach seat was a firmer foam, and narrower. It was oddly wide and sharp edged at the front, making it quite uncomfortable to put my feet down at a stop, or to hold my legs in against the tank. So, poor foot positioning on the boards, increased foot vibration.
The Sundowner, both types, have a soft outer layer of foam and a narrow nose. The reduction in vibration and butt discomfort is pronounced. They also let me better position my feet on the boards, which substantially reduced my foot vibration.

Just some food for thought regarding the vibration reduction some of us would like.