Mass dampers reduce highsides by 90%?

[nzspokes]

Interesting vid on Mass Dampers for motorcycles.

https://www.youtube.com/watch?v=3cncwp6KjbY

[pritch]

Very interesting, thanks for that.

[caseye]

Very interesting, thanks for that.

Wot he said! Wonder if it'll be any good on the 2018 A Twin!??:innocent:

[tri boy]

Interesting:msn-wink:

[nzspokes]

Its quite interesting to see where it will go.

[sidecar bob]

Its quite interesting to see where it will go.

I've clicked through at least 50 pics of Pete Hickman, TT lap record holder at both BSB & TT & see no sign of such a device on his bike.
Will see if I can get a personal opinion from him on them in the next day or two.

[nzspokes]

I've clicked through at least 50 pics of Pete Hickman, TT lap record holder at both BSB & TT & see no sign of such a device on his bike.
Will see if I can get a personal opinion from him on them in the next day or two.

Well Im still in the 70% believe it camp. Seems to a lot of marketing with it but it could be a good thing?

If it did work, would be great on ADV bikes on gravel.

[Bonez]

If it looks like an con, smells like a con it probably is a con......

[nzspokes]

Seems like they have been about for a bit. Starting to sound legit.

https://www.motorcycle.com/ask-mo-anything/ask-mo-how-are-mass-dampers-used-on-a-motorcycle.html

https://www.motorsportmagazine.com/articles/motorcycles/motogp/motogp-mutterings-catalunya

“But that was a bit of a disaster!” said team-owner Eduardo Perales, who has been running GP teams since 1990. “At first the problem was that the unit damped too much, so the rider couldn’t feel what was going on. Now we only use one damper on the swingarm and we are still trying to understand what works and what doesn’t, which is why we have a 2D sensor attached to the unit. Eventually maybe we could put the damper inside the swingarm. So far the good thing is that the damper seems to reduce rear-shock temperature and we can use a higher tyre pressure and still get a good contact patch, which improves tyre life.”

[caspernz]

Interesting topic, thanks for sharing :woohoo:

[pritch]

In the PS to the motorcycle.com article there is mention of an item by Mat Oxley. Here 'tis:
https://www.motorsportmagazine.com/articles/motorcycles/motogp/anti-chatter-jounce-box

If it's a con there's a lot of people in on it. :whistle:

[HenryDorsetCase]

He lost me when he tried to demonstrate the tyre contact patch by holding a dismounted tyre up to a fucking table mat.

Unless and until it is endorsed by Kevin Cameron I regard it as bullshit

[sidecar bob]

He lost me when he tried to demonstrate the tyre contact patch by holding a dismounted tyre up to a fucking table mat.

Unless and until it is endorsed by Kevin Cameron I regard it as bullshit

You only have to look at a still of anything with a 200 slick on the rear, exiting a corner hard to see that the table mat method is somewhat flawed.

[nzspokes]

You only have to look at a still of anything with a 200 slick on the rear, exiting a corner hard to see that the table mat method is somewhat flawed.

I think that was due to the uglyness of the table mat.

[F5 Dave]

I'd got as far as the bit where he said Don't skip forward in flashing lights, and I though; now there's s good idea, finally. I skipped forward a couple of times and he was still talking and showing something about adding unsprung weight right at the far end of a swingarm.
Skipping forward was a great idea.

[sidecar bob]

I'd got as far as the bit where he said Don't skip forward in flashing lights, and I though; now there's s good idea, finally. I skipped forward a couple of times and he was still talking and showing something about adding unsprung weight right at the far end of a swingarm.
Skipping forward was a great idea.

The problem with it is that they can only be tuned for one frequency.
The demonstration with the electric motor with the weight & spring wouldn't be so impressive if you flicked the switch off & on randomly, which would more accurately represent the movement of suspension.

[Laava]

The problem with it is that they can only be tuned for one frequency.
The demonstration with the electric motor with the weight & spring wouldn't be so impressive if you flicked the switch off & on randomly, which would more accurately represent the movement of suspension.
That was exactly what I thought. It reminded me of the Kango upright foot type compactors. You start them up and then whack the throttle open full and off you go. They are powerful and absolutely smash the ground down, although a bit horrible to use. We always used to tell the noobies, for a laugh, not to give it so much throttle. At half throttle the thing becomes a 100kg pogoing death dance!
But that device is especially for when you are absolutely at the edge of performance where it all is on a knife edge, breaking traction, suspension barely coping and everything flexing to it's limit. At this point it is calming everything down and seemed to have a pretty positive effect. Pretty much an ornament the rest of the time then?

[sidecar bob]

That was exactly what I thought. It reminded me of the Kango upright foot type compactors. You start them up and then whack the throttle open full and off you go. They are powerful and absolutely smash the ground down, although a bit horrible to use. We always used to tell the noobies, for a laugh, not to give it so much throttle. At half throttle the thing becomes a 100kg pogoing death dance!
But that device is especially for when you are absolutely at the edge of performance where it all is on a knife edge, breaking traction, suspension barely coping and everything flexing to it's limit. At this point it is calming everything down and seemed to have a pretty positive effect. Pretty much an ornament the rest of the time then?

Reminds me of when I was about 16, I pulled an old truck conrod out of the scrap bin at dad's work & bolted it to the bottom front engine mount of my CB125 so it hung down & back at the same angle as the the front downtube.
I was reasonably handy (read, brave & stupid) on the CB & took it to Baypark on a ride day & saw off a bunch of learner type guys on things like GSX250's & GPZ305'S on it.
I told them it was a frame damper & that was the reason I was quicker than them.
The concept looked like it was about to gain some traction at the time.
It was on there for years as a bit of a practical joke.

[F5 Dave]

Could a GPZ305 make a full lap without the cams wearing circular?

[nzspokes]

Pretty much an ornament the rest of the time then?

I guess you can say that about air bags, abs and the likes. An ornament until you need it. :yes:

Im not one to end up going fast enough to get into highsides but cool if it can save some broken bones of those that do.

I guess we will find out with time.