Rimpact Tuned Mass Damper - MTB Nerds time

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Rimpact Tuned Mass Damper - MTB Nerds time

Post by weeksy »

https://www.rimpactmtb.com/tmd?srsltid= ... UYBwMeio3T

I've ordered one of these for the boys race bike..

Image

As you can see, it's a bouncy uppy/downy thing... Which in theory bounces at a particular rate/speed to help with suspension.

You'll have to read a bit more in the link really.

My mate at RSR Bikeworks has been working with World Cup teams and found it really good/useful, so thought we'd give it a whirl.

Sadly there's no in UK for 4-5 weeks, but we can wait :)
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by MingtheMerciless »

ohh interesting, will it let me take few seconds off my times down the Friston Trails......😂😂😂
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by weeksy »

MingtheMerciless wrote: Thu Apr 17, 2025 9:24 am ohh interesting, will it let me take few seconds off my times down the Friston Trails......😂😂😂
Well from what i've seen the theory is 1s per minute. Which isn't a lot admittedly, but this weekend gone that could have pushed him from 16th to 9th in Nationals. Fort William it could be 4s per run... which again is massive in his world
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by MingtheMerciless »

Hmmm, that would put me in KOM territory for a couple of segments....

Keep me updated.
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Mr Moofo »

weeksy wrote: Thu Apr 17, 2025 8:34 am https://www.rimpactmtb.com/tmd?srsltid= ... UYBwMeio3T

I've ordered one of these for the boys race bike..

Image

As you can see, it's a bouncy uppy/downy thing... Which in theory bounces at a particular rate/speed to help with suspension.

You'll have to read a bit more in the link really.

My mate at RSR Bikeworks has been working with World Cup teams and found it really good/useful, so thought we'd give it a whirl.

Sadly there's no in UK for 4-5 weeks, but we can wait :)
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Mr. Dazzle »

Not entirely snake oil, idea comes from F1. Well it actually comes from an academic at Cambridge Uni, it was merely applied first in F1.

https://en.wikipedia.org/wiki/Inerter_( ... _networks)

EDIT: Just like is says in that website, actually :lol:
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Mr Moofo »

Mr. Dazzle wrote: Thu Apr 17, 2025 2:34 pm Not entirely snake oil, idea comes from F1. Well it actually comes from an academic at Cambridge Uni, it was merely applied first in F1.

https://en.wikipedia.org/wiki/Inerter_( ... _networks)

EDIT: Just like is says in that website, actually :lol:
Whuch is fine. But I am not sure how those small gains really make a huge difference on a downhill MTB
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Horse »

Mr Moofo wrote: Thu Apr 17, 2025 3:53 pm
Mr. Dazzle wrote: Thu Apr 17, 2025 2:34 pm Not entirely snake oil, idea comes from F1. Well it actually comes from an academic at Cambridge Uni, it was merely applied first in F1.

https://en.wikipedia.org/wiki/Inerter_( ... _networks)

EDIT: Just like is says in that website, actually :lol:
Whuch is fine. But I am not sure how those small gains really make a huge difference on a downhill MTB
The "aggregation of marginal gains" is a concept championed by Sir Dave Brailsford, who led the British cycling team to dominance, including winning 16 gold medals in the 2008 and 2012 Olympics. This theory focuses on making small, incremental improvements in many areas, believing that even 1% improvements in various aspects can collectively lead to significant overall performance gains.
Even bland can be a type of character :wave:
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Count Steer »

Horse wrote: Thu Apr 17, 2025 4:10 pm
Mr Moofo wrote: Thu Apr 17, 2025 3:53 pm
Mr. Dazzle wrote: Thu Apr 17, 2025 2:34 pm Not entirely snake oil, idea comes from F1. Well it actually comes from an academic at Cambridge Uni, it was merely applied first in F1.

https://en.wikipedia.org/wiki/Inerter_( ... _networks)

EDIT: Just like is says in that website, actually :lol:
Whuch is fine. But I am not sure how those small gains really make a huge difference on a downhill MTB
The "aggregation of marginal gains" is a concept championed by Sir Dave Brailsford, who led the British cycling team to dominance, including winning 16 gold medals in the 2008 and 2012 Olympics. This theory focuses on making small, incremental improvements in many areas, believing that even 1% improvements in various aspects can collectively lead to significant overall performance gains.
S'just a version of 'kaizen' innit?

(Which was actually initiated in post-war Japan by....America).
The plural of 'anecdote' is not 'data'.
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by weeksy »

Mr Moofo wrote: Thu Apr 17, 2025 3:53 pm
Mr. Dazzle wrote: Thu Apr 17, 2025 2:34 pm Not entirely snake oil, idea comes from F1. Well it actually comes from an academic at Cambridge Uni, it was merely applied first in F1.

https://en.wikipedia.org/wiki/Inerter_( ... _networks)

EDIT: Just like is says in that website, actually :lol:
Whuch is fine. But I am not sure how those small gains really make a huge difference on a downhill MTB
They don't.... they make 1s per minute, which is TINY but also HUGE at the same time :D
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Horse »

Count Steer wrote: Thu Apr 17, 2025 4:31 pm S'just a version of 'kaizen' innit?

(Which was actually initiated in post-war Japan by....America).
Co. I worked at had some odd, similar-sounding system for stock control.

Visitors who knew all about best-practice production methods were usually confused, they didn't know about it!

Someone made it up.

But then, products were sometimes named after Magic Roundabout characters ... :D
Even bland can be a type of character :wave:
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Count Steer »

Horse wrote: Thu Apr 17, 2025 4:58 pm
Count Steer wrote: Thu Apr 17, 2025 4:31 pm S'just a version of 'kaizen' innit?

(Which was actually initiated in post-war Japan by....America).
Co. I worked at had some odd, similar-sounding system for stock control.

Visitors who knew all about best-practice production methods were usually confused, they didn't know about it!

Someone made it up.

But then, products were sometimes named after Magic Roundabout characters ... :D
Kaizen is one of those things that seem blindingly obvious - with hindsight. :D

If you fix all the small things, the big thing runs better. So, something like the Toyota Production System didn't worry about whether making cars was the right thing to do, just how to do it 'better' where 'better' can be cheaper, faster, more profitably, higher 'quality' etc. In the Japanese case it was 'all the above'. :lol:
The plural of 'anecdote' is not 'data'.
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Taff »

This is the vibration absorber fitted to a lynx helicopter rotor head, iirc they weigh about 50kg and absorbs vibration in the same sort of way being a sprung weight, but, the big difference is that the rotor head turns at a constant rpm.

Image
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Mr Moofo »

Count Steer wrote: Thu Apr 17, 2025 5:13 pm
Horse wrote: Thu Apr 17, 2025 4:58 pm
Count Steer wrote: Thu Apr 17, 2025 4:31 pm S'just a version of 'kaizen' innit?

(Which was actually initiated in post-war Japan by....America).
Co. I worked at had some odd, similar-sounding system for stock control.

Visitors who knew all about best-practice production methods were usually confused, they didn't know about it!

Someone made it up.

But then, products were sometimes named after Magic Roundabout characters ... :D
Kaizen is one of those things that seem blindingly obvious - with hindsight. :D

If you fix all the small things, the big thing runs better. So, something like the Toyota Production System didn't worry about whether making cars was the right thing to do, just how to do it 'better' where 'better' can be cheaper, faster, more profitably, higher 'quality' etc. In the Japanese case it was 'all the above'. :lol:
Oddly, I introduced kaizan into the Japanese company I worked for ...
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Mr Moofo »

Horse wrote: Thu Apr 17, 2025 4:10 pm
Mr Moofo wrote: Thu Apr 17, 2025 3:53 pm
Mr. Dazzle wrote: Thu Apr 17, 2025 2:34 pm Not entirely snake oil, idea comes from F1. Well it actually comes from an academic at Cambridge Uni, it was merely applied first in F1.

https://en.wikipedia.org/wiki/Inerter_( ... _networks)

EDIT: Just like is says in that website, actually :lol:
Whuch is fine. But I am not sure how those small gains really make a huge difference on a downhill MTB
The "aggregation of marginal gains" is a concept championed by Sir Dave Brailsford, who led the British cycling team to dominance, including winning 16 gold medals in the 2008 and 2012 Olympics. This theory focuses on making small, incremental improvements in many areas, believing that even 1% improvements in various aspects can collectively lead to significant overall performance gains.
I am sure the little packages that were being slipped to various riders had nothing to do with it!
Or no more than any other cycling team!
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Mr. Dazzle »

Horse wrote: Thu Apr 17, 2025 4:10 pm The "aggregation of marginal gains" is a concept championed by Sir Dave Brailsford, who led the British cycling team to dominance, including winning 16 gold medals in the 2008 and 2012 Olympics.
British Cylcing love to parrot this, like they came up with the idea :D

I had loads of BC tech guys try to explain it to me, like we hadn't been using that thinking in F1 and the like for 3 decades prior.

BTW 1s gain per minute would be LOADS in F1. Almost unheard of to get that sort of gain from one change.
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Count Steer »

Mr. Dazzle wrote: Fri Apr 18, 2025 9:46 am
Horse wrote: Thu Apr 17, 2025 4:10 pm The "aggregation of marginal gains" is a concept championed by Sir Dave Brailsford, who led the British cycling team to dominance, including winning 16 gold medals in the 2008 and 2012 Olympics.
British Cylcing love to parrot this, like they came up with the idea :D

I had loads of BC tech guys try to explain it to me, like we hadn't been using that thinking in F1 and the like for 3 decades prior.

BTW 1s gain per minute would be LOADS in F1. Almost unheard of to get that sort of gain from one change.
Not to mention that some marginal gains in one respect can have negative impacts in another. eg that mass damper comes with a weight penalty. Possibly not a biggie in DH but the mass is carried quite high.

It's often a case of change one thing then chase out the negative impacts on other bits of the whole.
The plural of 'anecdote' is not 'data'.
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by Taff »

https://www.facebook.com/share/p/12J1FhxoGz5/

If it's good enough for Marquez....
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by weeksy »

ImageIMG-20250522-WA0003 by Steve Weeks, on Flickr

And here it is... Ready to be installed and then suspension setup using Data Acquisition this weekend. I would call it Telemetry but i'm sure someone would tell me it's not as that has to be read on the fly otherwise it's not telemetry :)

The data is taken after each run when back at the bottom and analysed and then changes made :D
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Re: Rimpact Tuned Mass Damper - MTB Nerds time

Post by millemille »

weeksy wrote: Thu May 22, 2025 3:23 pm ImageIMG-20250522-WA0003 by Steve Weeks, on Flickr

And here it is... Ready to be installed and then suspension setup using Data Acquisition this weekend. I would call it Telemetry but i'm sure someone would tell me it's not as that has to be read on the fly otherwise it's not telemetry :)

The data is taken after each run when back at the bottom and analysed and then changes made :D
Good boy, Steve, good boy :)
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