YZ250 Owners....Vibration Resolution

Frodad78
Posts
2155
Joined
1/11/2012
Location
USA
10/12/2021 11:22am
Applied Racing triple clamps, rubber mounted, EVO bars on my 03 YZ250. Maybe its because I've been riding two strokes forever but I don't notice any vibration that could cause an issue? maybe I've grown used to it!
2
1
10/12/2021 11:36am
Fill the interior of the bars with insulation spray foam or silicone. Old trick but it helps a little.
4
2
Mycuzin
Posts
5
Joined
10/12/2021
Location
Southaven, MS, USA
10/12/2021 3:40pm
Before you jump to the Flexx Bar. Check out XCGear.com the Mako 360 is exactly what your looking for!!!!
They also has a product called Spurz foot pegs that absorb vibration.The General Ryan Sipes runs the Mako 360.
5

The Shop

byke
Posts
3148
Joined
8/12/2015
Location
Auburn, CA, USA
10/12/2021 3:52pm
Stick one of these in it...

3
7
OldHalfway
Posts
139
Joined
2/19/2018
Location
Pemberton, NJ, USA
10/13/2021 3:44pm
When I got back on a YZ after a few years on a four stroke I felt the same. I did the quick easy cheap fixes first. Pillowtop grips, filled bars with silicone. It was better, probably no where near as good as some of the fixes mentioned here but it was good enough and by the 3rd ride or so I was used to it where I didn't even notice it.
1
1
rjg
Posts
440
Joined
9/27/2016
Location
CA
10/13/2021 3:58pm
Spudnut wrote:
You have two options here. A. Throw some money at it, get some fancy parts and cut down on vibration by about 20 percent. The outcome...
You have two options here.

A. Throw some money at it, get some fancy parts and cut down on vibration by about 20 percent. The outcome is you having a super sweet trick looking bike that vibrates almost just as much as it did before.

B. Get used to it Over the next two months and save your money to spend on entry fees, tires and gas money for going to those sweet tracks that are a few hours away without your wallet squawking like a mashed cat.


Either option is acceptable
Easy said and done if your young. That same mentality doesnt work as you get older.
1
Vet57
Posts
2561
Joined
12/13/2010
Location
BRO Town, MA, USA
10/14/2021 2:29am
I'm putting the PT Evo bars on and ordering the new Ride Eng rubber mount split clamp with Xtrig PHDS mounts. Be available in couple weeks. That should do it! Thanks for all the responses.
1
MX369
Posts
86
Joined
1/25/2020
Location
Cape Girardeau, MO, USA
10/14/2021 8:31am
fill the handlebars with cheap ass silicone. done this for 20 plus years woods trick
[YM]
Posts
193
Joined
9/15/2021
Location
USA
10/16/2021 10:36pm
What about foot peg vibration?
10/17/2021 6:49am
[YM] wrote:
What about foot peg vibration?
Fill your boots with silicone, of course.
10
1
10/17/2021 6:52am Edited Date/Time 10/17/2021 6:53am
Fill the interior of the bars with insulation spray foam or silicone. Old trick but it helps a little.
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying anything like this to help with the vibration but now I'm intrigued. Gonna run to Lowe's today to grab one or the other and give it a shot.
1
Bidirella
Posts
1289
Joined
2/11/2016
Location
NZ
10/17/2021 6:54am
Buy a 4 stroke Grinning
5
Luxon MX
Posts
1395
Joined
11/6/2017
Location
San Diego, CA, USA
Fantasy
10/17/2021 8:43am
Fill the interior of the bars with insulation spray foam or silicone. Old trick but it helps a little.
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying...
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying anything like this to help with the vibration but now I'm intrigued. Gonna run to Lowe's today to grab one or the other and give it a shot.
There are two primary ways to dampen the vibrations when it comes to filling the bars with something:

1) Fill it with whatever (foam, silicone, most anything that's not a liquid), but make sure that whatever you filled them with isn't bonded to the handlebar itself. So when the bars flex/vibrate, the bars move independently of the filling and there is friction between the two. This friction will "absorb" the vibrational energy (and turn it into heat).

2) Suspend something inside the bars, preferably something heavy, but isolated in something soft. So, stick a metal slug in the end of the bars that is surrounded by soft rubber. The vibration of the bars will excite the slug, but it will have a very different vibrational mode than the bars, so it works to reduce the vibrations at your hands. This is more or less how the Fasst Co vibration inserts work. Simply adding weight will lower vibration intensity as well as it takes more energy to vibrate and it reduces the natural frequency of the bars (another way the Fasst parts work).

You can combine #1 and #2 for an even better effect. The big downside of #2 is that you're adding weight. I'd suggest pulling a foam cylinder through the bars, like this:
https://www.mcmaster.com/foam/shape~rod-and-disc/
as it will be inexpensive and lightweight.
4
mx617
Posts
1631
Joined
4/1/2008
Location
Kamloops, BC, CA
10/17/2021 9:54am
[YM] wrote:
What about foot peg vibration?
Different boots. I rode for years with tech 10s and never noticed vibration. Decided to try gaerne sg10 and I can't believe how much it rattles now.
2
Lightning78
Posts
6353
Joined
12/12/2007
Location
Huntington Beach, CA, USA
10/17/2021 9:55am
Doesn't a company make bar inserts to lessen vibration? I used to have some on my RM250 and they helped.....but then I just got used to it on other 2 strokes I've owned
Johnny Ringo
Posts
8219
Joined
1/11/2016
Location
Tombstone, AZ, USA
10/17/2021 10:52am
[YM] wrote:
What about foot peg vibration?
Fill your boots with silicone, of course.
This made me lol
2
1
Wiscomx
Posts
87
Joined
10/2/2021
Location
West Bend, WI, USA
10/17/2021 12:00pm
Rubber mounted clamps, soft grips, I like odi bars personally, may sound stupid but check exhaust mounts, on my last yz I also made a set of carbon fiber head stays, that seemed to tone down the vibration.
Rider 5280
Posts
2405
Joined
11/9/2011
Location
Denver Metro, CO, USA
10/18/2021 8:57am Edited Date/Time 10/18/2021 9:03am
Recent vibration-related product experiences FWIW ...

I rode braking-bump infested Rampart Range in Colorado the past 2 weekends, riding ~ 2.5 hours on each day (2.5 engine hours).

1st weekend (10-8-2021):
I rode a 2020 YZ450F outfitted with XC Gear's Make 360 configured with the hardest elastomer options (because I don't like much rotational bar movement) and XC Gear's Spurz pegs (shock and vibration reducing pegs). Brand new ODI "No Waffle" black grips were also installed.

2nd weekend (10-17-2021):
I rode a 2016 YZ250F outfitted with Neken SFS clamps and stock footpegs. Again, brand new ODI "No Waffle" black grips were also installed.

---------------------------------

Comparison:

(1) I was quite tired wrestling the heavy 2020 YZ450F around for ~ 2.5 hours after the 1st weekend, but I had no hand or foot/leg vibration numbness or fatigue. It was more muscle fatigue overall.

(2) After riding the 2nd weekend on a 2016 YZ250F, I had a LOT more fun given the 250F's nimbleness, but OH MAN WERE MY HANDS AND FEET SHOT FROM VIBRATION. NUMB NUMB NUMB. As I type this the next day, my hands are still tingly/numb. Not cool.

Summary:
There's no question in my mind that the Mako 360 setup + Spurz pegs are doing more than I originally realized. Way waaaay more.


murph783
Posts
1355
Joined
3/2/2011
Location
USA
10/18/2021 9:21am
Fill the interior of the bars with insulation spray foam or silicone. Old trick but it helps a little.
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying...
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying anything like this to help with the vibration but now I'm intrigued. Gonna run to Lowe's today to grab one or the other and give it a shot.
Luxon MX wrote:
There are two primary ways to dampen the vibrations when it comes to filling the bars with something: 1) Fill it with whatever (foam, silicone, most...
There are two primary ways to dampen the vibrations when it comes to filling the bars with something:

1) Fill it with whatever (foam, silicone, most anything that's not a liquid), but make sure that whatever you filled them with isn't bonded to the handlebar itself. So when the bars flex/vibrate, the bars move independently of the filling and there is friction between the two. This friction will "absorb" the vibrational energy (and turn it into heat).

2) Suspend something inside the bars, preferably something heavy, but isolated in something soft. So, stick a metal slug in the end of the bars that is surrounded by soft rubber. The vibration of the bars will excite the slug, but it will have a very different vibrational mode than the bars, so it works to reduce the vibrations at your hands. This is more or less how the Fasst Co vibration inserts work. Simply adding weight will lower vibration intensity as well as it takes more energy to vibrate and it reduces the natural frequency of the bars (another way the Fasst parts work).

You can combine #1 and #2 for an even better effect. The big downside of #2 is that you're adding weight. I'd suggest pulling a foam cylinder through the bars, like this:
https://www.mcmaster.com/foam/shape~rod-and-disc/
as it will be inexpensive and lightweight.
Luxon coming in clutch. I’ll tell you what, if I could work anywhere I think it’d be in your shop-I’d just nerd out all day
6
OldPro277
Posts
1876
Joined
11/9/2009
Location
Avonmore, PA, USA
10/18/2021 9:32am
Fill the interior of the bars with insulation spray foam or silicone. Old trick but it helps a little.
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying...
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying anything like this to help with the vibration but now I'm intrigued. Gonna run to Lowe's today to grab one or the other and give it a shot.
Luxon MX wrote:
There are two primary ways to dampen the vibrations when it comes to filling the bars with something: 1) Fill it with whatever (foam, silicone, most...
There are two primary ways to dampen the vibrations when it comes to filling the bars with something:

1) Fill it with whatever (foam, silicone, most anything that's not a liquid), but make sure that whatever you filled them with isn't bonded to the handlebar itself. So when the bars flex/vibrate, the bars move independently of the filling and there is friction between the two. This friction will "absorb" the vibrational energy (and turn it into heat).

2) Suspend something inside the bars, preferably something heavy, but isolated in something soft. So, stick a metal slug in the end of the bars that is surrounded by soft rubber. The vibration of the bars will excite the slug, but it will have a very different vibrational mode than the bars, so it works to reduce the vibrations at your hands. This is more or less how the Fasst Co vibration inserts work. Simply adding weight will lower vibration intensity as well as it takes more energy to vibrate and it reduces the natural frequency of the bars (another way the Fasst parts work).

You can combine #1 and #2 for an even better effect. The big downside of #2 is that you're adding weight. I'd suggest pulling a foam cylinder through the bars, like this:
https://www.mcmaster.com/foam/shape~rod-and-disc/
as it will be inexpensive and lightweight.
Billy-- I'm liking your idea. Being that the vast majority of riding is on Vintage bikes ( 75 Husky-76 Rm ,etc) Ive been looking for ways to reduce the vibration on these. Is the "open cell" or " closed cell" more effective ?

I was hoping to find a way to adapt those Mako 360 mounts to the vintage clamps, but they're pretty pricey to be experimenting with ....
1
Luxon MX
Posts
1395
Joined
11/6/2017
Location
San Diego, CA, USA
Fantasy
10/18/2021 9:39am
OldPro277 wrote:
Billy-- I'm liking your idea. Being that the vast majority of riding is on Vintage bikes ( 75 Husky-76 Rm ,etc) Ive been looking for ways...
Billy-- I'm liking your idea. Being that the vast majority of riding is on Vintage bikes ( 75 Husky-76 Rm ,etc) Ive been looking for ways to reduce the vibration on these. Is the "open cell" or " closed cell" more effective ?

I was hoping to find a way to adapt those Mako 360 mounts to the vintage clamps, but they're pretty pricey to be experimenting with ....
I'm not sure, but I'm guessing the open cell would work better as it will slide against the inside of the bars easier for the friction to do its work. It's cheap enough to try both!
1
Mycuzin
Posts
5
Joined
10/12/2021
Location
Southaven, MS, USA
10/18/2021 9:45am
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying...
Does one tend to work better than the other? Bored today with a new set of grips I was going to throw on, never considered trying anything like this to help with the vibration but now I'm intrigued. Gonna run to Lowe's today to grab one or the other and give it a shot.
Luxon MX wrote:
There are two primary ways to dampen the vibrations when it comes to filling the bars with something: 1) Fill it with whatever (foam, silicone, most...
There are two primary ways to dampen the vibrations when it comes to filling the bars with something:

1) Fill it with whatever (foam, silicone, most anything that's not a liquid), but make sure that whatever you filled them with isn't bonded to the handlebar itself. So when the bars flex/vibrate, the bars move independently of the filling and there is friction between the two. This friction will "absorb" the vibrational energy (and turn it into heat).

2) Suspend something inside the bars, preferably something heavy, but isolated in something soft. So, stick a metal slug in the end of the bars that is surrounded by soft rubber. The vibration of the bars will excite the slug, but it will have a very different vibrational mode than the bars, so it works to reduce the vibrations at your hands. This is more or less how the Fasst Co vibration inserts work. Simply adding weight will lower vibration intensity as well as it takes more energy to vibrate and it reduces the natural frequency of the bars (another way the Fasst parts work).

You can combine #1 and #2 for an even better effect. The big downside of #2 is that you're adding weight. I'd suggest pulling a foam cylinder through the bars, like this:
https://www.mcmaster.com/foam/shape~rod-and-disc/
as it will be inexpensive and lightweight.
OldPro277 wrote:
Billy-- I'm liking your idea. Being that the vast majority of riding is on Vintage bikes ( 75 Husky-76 Rm ,etc) Ive been looking for ways...
Billy-- I'm liking your idea. Being that the vast majority of riding is on Vintage bikes ( 75 Husky-76 Rm ,etc) Ive been looking for ways to reduce the vibration on these. Is the "open cell" or " closed cell" more effective ?

I was hoping to find a way to adapt those Mako 360 mounts to the vintage clamps, but they're pretty pricey to be experimenting with ....
If you give XCGEAR.com a call he will gladly help you with your vintage bikes. He will probably ask you to measure
your bikes hell he may already have one that will fit. Give him a call
dnf736
Posts
215
Joined
4/1/2008
Location
Alpine, CA, USA
10/18/2021 9:49am Edited Date/Time 10/18/2021 9:50am
I had steel frame YZ's for years, then in 05 the aluminum frame came out and I could not ride that bike for more than two laps it vibrated so bad, felt like I was riding a tuning fork. I caved and bought a 4S.

Not a cheap option but it does make a world of difference, get the crank balanced.
1
OldPro277
Posts
1876
Joined
11/9/2009
Location
Avonmore, PA, USA
10/18/2021 9:50am
Mycuzin wrote:
If you give XCGEAR.com a call he will gladly help you with your vintage bikes. He will probably ask you to measure your bikes hell he...
If you give XCGEAR.com a call he will gladly help you with your vintage bikes. He will probably ask you to measure
your bikes hell he may already have one that will fit. Give him a call
Yeah-- I actually emailed them twice about that, a month or so ago---zero reply. Maybe I'll try again
wrc777
Posts
3240
Joined
5/21/2020
Location
Greenwood, IN, USA
Fantasy
10/18/2021 10:53am
First if you think a YZ vibrates bad try a pre balancer KTM 2 stroke. The YZ feels like an electric bike in comparison.

Secondly what does Pro Taper do to the EVO bar to make it absorb so much more shock and vibration than others? Wall thickness at the end of the bars is the same as the super stiff Neken bar KTM uses.
Vet57
Posts
2561
Joined
12/13/2010
Location
BRO Town, MA, USA
10/19/2021 2:49am
OldPro277 wrote:
Yeah-- I actually emailed them twice about that, a month or so ago---zero reply. Maybe I'll try again
Same result here..
Robgvx
Posts
4093
Joined
4/1/2008
Location
GB
10/19/2021 4:41am
Spin some laps on a CR500 before, then it’ll seem like it hardly vibrates at all
Bearuno wrote:
True. But, things like a PHDS system ( I've WP forks on my 500), [img]https://p.vitalmx.com/photos/forums/2021/10/11/513933/s1200_009.jpg[/img]Soft grips, and , more importantly, a relaxed pair of hands holding...
True.

But, things like a PHDS system ( I've WP forks on my 500), Soft grips, and , more importantly, a relaxed pair of hands holding them makes things fine.

That final point, is the key on any bike, with a bit of vibes to it..
So Bear, out of curiosity (and because you know a bit!) could you make a CR500 not vibrate if the crank (and other internal stuff) was balanced? Would that actually make any difference?

I recall reading that Eric Geboers tried every RC500 crank they had before the season started in order to select the most vibration-free.

R

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