Author Topic: Dyanbeads for wheel balancing...(NGC)  (Read 1331 times)

Offline bigbikerrick

  • Gaggle Hero
  • *****
  • Posts: 6033
  • 73 Eldo, 98 V 11 ,12 Ural Gear Up, 76 Convert,
  • Location: Southeastern corner of Arizona, right next to "Old Mexico, and New Mexico"
Dyanbeads for wheel balancing...(NGC)
« on: October 26, 2020, 05:14:30 PM »
Hello Folks, Do any of you have any experience with dyna beads tire balancing beads? I was wondering if they would work for me with a problem wheel I have on My 350 Z roadster. We added some high end aftermarket wheels to my roadster,and one of the front wheels got bent slightly from hitting a pot hole. The bend was on the inner lip of the rim. I took the wheel to a place called "Nu Wheel" that repairs wheels,and they straightened out the bent lip, for $125.00 but still the wheel takes alot of weight to balance, about 7-8 ounces,and even though I have had it re balanced numerous times, it still eventually develops a bad vibration at around 80 mph.
  These wheels are no longer available, so I cant buy one replacement wheel. The wheel repair place says thats all they can do with it. I was wondering what the group's opinion is on trying dyna beads in that tire? I want to avoid having to buy 4 new wheels, since I really like the way these wheels look. Any suggestions you wish to share, much appreciated.
Rick.
« Last Edit: October 26, 2020, 05:16:11 PM by bigbikerrick »
"You meet the most interesting people on a Guzzi"

Offline RinkRat II

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • *
  • Posts: 2263
  • Lake Powell AZ
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #1 on: October 26, 2020, 05:35:06 PM »

   Take just the wheel to a performance wheel balancing shop and find out why after hitting a pothole your wheel would be off that much.  You can balance a square wheel but it still won't ride worth a damn. Something else is going on, not just balance.

      Paul B :boozing:
A Miller in the hand is worth two in the fridge.

Offline Bulldog9

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • *
  • Posts: 3153
  • Location: NY'r resettled in the Old Dominion
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #2 on: October 26, 2020, 05:44:04 PM »
I had an unexpected mid-tour tire change on my Norge a couple years ago, needed new front and rear tires. The shop I went to (only shop in 100 miles) happened to have a set in the size I needed. He dumbed those balance beads in the tires before mounting, and I rode the 3000 miles more of my trip and another 2K miles with them in to good effect. No vibration or imbalance at speeds up to 120 +/-.  I was sceptical, but would definitely use again without hesitation.

That said, I don't see how they can help with a flat spot in the rim, so unlikely they will work, but nothing ventured nothing gained.
MGNOC#23231
The Living: 1976 Convert, 2004 Breva 750, 2007 GRiSO, 2008 1200 Sport, 2012 Norge GT, 2016 Stornello #742
The Departed: 2017 MGX, 2014 Norge GT, 
In Stasis: 1978 XS750, XS1100SF

Online Perazzimx14

  • Gaggle Hero
  • *****
  • Posts: 6351
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #3 on: October 26, 2020, 05:50:08 PM »
Tractor Trailer do not need 7 o 8 ounces of weigh for balancing. If it takes that much weight there is another issue. For the record I stopped balancing tires last year and do not notice the difference. I used to buy beads 120 ounces at a time.

Today I mounted a Shinko 804 front on a a new to me bike. After the tire was on I remove the five (5) 1/2 ounce sticky weights that were on the rim. There is also no locating dot on the tire so it when on with no idea of or if there was a heavy spot. Took it out and at any speed I had it too was smooth as silk.

I'm convinced that motorcycle tires (for everyday road use) just do not have enough mass or spin fast enough to need balancing.

2021 Moto Guzzi V85TT Guardia D'onore
2017 V7 III Carbon Dark #0008 of 1921
2017 Road Glide Special
2020 Kawasaki KLX300SM
2016 Suzuki Van Van 200 AKA Honda Trail 125 killer
2008 Harley Davidson Softail Custom

Offline wirespokes

  • Gaggle Hero
  • *****
  • Posts: 2257
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #4 on: October 26, 2020, 05:56:43 PM »
Was the tire replaced?

Offline malik

  • Gaggle Hero
  • *****
  • Posts: 2378
  • Location: Sydney, Australia
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #5 on: October 26, 2020, 06:08:47 PM »
I use dynabeads, and quite happily. BUT, the gross imperfection you describe seems beyond the DynaBeads design brief. Have the rim properly trued, or replace it.
2010 V7 Classic, 2014 V7 Special
1996 1100 Sport Carb (in NZ), 2004 V11 LeMans (in UK)
Carberry Enfield V-Twin, 2008 Royal Enfield Electra, 2006 RE Electra 535

Offline bigbikerrick

  • Gaggle Hero
  • *****
  • Posts: 6033
  • 73 Eldo, 98 V 11 ,12 Ural Gear Up, 76 Convert,
  • Location: Southeastern corner of Arizona, right next to "Old Mexico, and New Mexico"
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #6 on: October 26, 2020, 06:27:09 PM »
Thanks for the replies folks. Yes , I replaced te tire with a brand new one. Also ,the rim does not have a "flat spot", I believe that what the wheel guy told me is that the lip edge of the rim is straight and true when he spins it on his machine,but there is a slight bend at the  mounting hub , and thats what causes it to require so much weight. You can not see the "bend" when you spin the wheel ,and look at it, it all looks like it  spins true, as in there is no lateral run out, or vertical run out, you can appreciate with the naked eye. He also told me the balancing would "change" that you could balance it and it would only be smooth for about a month. I am not sure what exactly he meant by this. I dont see how the balancing requirements would change.
Rick.
"You meet the most interesting people on a Guzzi"

Offline wirespokes

  • Gaggle Hero
  • *****
  • Posts: 2257
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #7 on: October 27, 2020, 12:21:31 PM »
It seems dynabeads would be your answer.

I'm curious how the rim would behave on a static balancer.

This is all so mysterious - I wonder how anyone would know the tire would exhibit out-of-balance after a month of running? And how would he know the mounting is bent if it's not visible? Why not true it up if he knows that's the case? A machine shop would have to make a mounting fixture, but after that, with a little machining, true everything up.

Can you see a wobble when spinning the wheel with tire mounted?

Offline bigbikerrick

  • Gaggle Hero
  • *****
  • Posts: 6033
  • 73 Eldo, 98 V 11 ,12 Ural Gear Up, 76 Convert,
  • Location: Southeastern corner of Arizona, right next to "Old Mexico, and New Mexico"
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #8 on: October 27, 2020, 01:33:03 PM »
Wirespokes, When I jack up the car and spin the tire/wheel by hand, I cant see any obvious deflection, either laterally, or vertically. The bad wheel is on the passenger front, when I do the same with the drivers side wheel,for comparison, I see no obvious difference in deflection. I took the wheel to a place called Nu Wheel in Tucson, and they have been around for a long time, doing wheel repair. The owner told me that when a wheel is slightly bent at the hub, there is not much they can do about that.He stated that you can balance it pretty good, but with the bend at the hub, the balance job wont "hold". I took it to discount tire and had the guys re balance the tire twice,and the best they could get it was taking 8 oz of weight. It vibrates between 80-83 mph. Its smooth at 70, and at 100 mph. Thats why I was debating, if I left the 7 ozs of weights on the rim, and added the dyna beads, maybe it would help some. 
thanks,
Rick
"You meet the most interesting people on a Guzzi"

Offline cliffrod

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • Posts: 2385
  • AC Button II
    • Carolina Sculpture Studio
  • Location: Spartanburg, SC USA
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #9 on: October 27, 2020, 02:11:01 PM »
A likely reason why the balance won't  "hold" indefinitely is likely because the weights will eventually be thrown off when it reaches the point of significant vibration. 

A bend or deformation isn't going to change the weight/mass of the wheel, only the placement of mass in terms of the wheel's three dimensional area.   Now there is mass where it is not supposed to be.   This condition may not be noticeable until a specifc speed is acheived, which is a sweet spot for the new state of imbalance.  Even if it isn't as noticeable at other speeds, it's likely that some oscillation is occurring constantly that may further enhance the chances of a premature failure.  Not cool.

If the wheel will magically heal itself back into a normal state of balance (which is the basic approach to all needed repairs in my father's squeeze-a-penny "it'll fix itself" mentality), it also makes sense that it will also move again into a state of disrepair or beyond just as easily.  Hit a unexpected pothole or retread and it's showtime.   Neither place is where I want to be at 80-100mph, even with four wheels instead of two.   Removing material from the wheel to balance it will weaken the wheel at the same time it increases the static imbalance, which will probably not be any different at the new sweet spot of rotational imbalance.  Not cool either. 

I understand wanting to save the wheel and thus save the set of wheels, but that may not be practical or safe this time. No amount of weight to mask the condition will make it safe.   That's why I so dislike fancy alloy wheels on cars. I sold a lot of muscle car-era special wheels as a kid when it was profitable before repros changed the market.  Compared to a steel wheel, It takes very little damage to render an alloy wheel useless. 

Good luck.
1973 V7 Sport  "Now THAT'S a motorcycle!"-  Master Sculptor Giuliano Cecchinelli
1967 V700 Corsa Record
1981 Lemans CX100
https://www.youtube.com/watch?v=ExX3YmQel_Q
http://carolinasculpturestudio.com/
YouTube @carolinasculpturestudio
https://www.youtube.com/channel/UCzSYaYdis55gE-vqifzjA6A

Online Perazzimx14

  • Gaggle Hero
  • *****
  • Posts: 6351
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #10 on: October 27, 2020, 03:02:52 PM »
I assume that they also made more then 4 of these wheels so there is maybe a possibility of finding a good used one??

Maybe a picture and some info on the wheels would help the rest of us keep and eye out for one for you?
2021 Moto Guzzi V85TT Guardia D'onore
2017 V7 III Carbon Dark #0008 of 1921
2017 Road Glide Special
2020 Kawasaki KLX300SM
2016 Suzuki Van Van 200 AKA Honda Trail 125 killer
2008 Harley Davidson Softail Custom

Offline bigbikerrick

  • Gaggle Hero
  • *****
  • Posts: 6033
  • 73 Eldo, 98 V 11 ,12 Ural Gear Up, 76 Convert,
  • Location: Southeastern corner of Arizona, right next to "Old Mexico, and New Mexico"
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #11 on: October 27, 2020, 03:24:42 PM »
Perrazimx14, The wheel is a Ruff racing R 280 in a 19" rim with a charcoal grey center. I have been looking for one for the last couple of years. Sometimes you find a place online that shows them, but when you call them to order one, the answer has always been " not available"

Cliffrod, taking into consideration what you tell me, it sounds like it may be a safety issue. I am thinking I may be better off biting the bullet,and just  buying a complete set of aftermarket wheels.I hate to think what woud happen if the wheel failed at speed...
Thank you
Rick.
"You meet the most interesting people on a Guzzi"

Offline cliffrod

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • Posts: 2385
  • AC Button II
    • Carolina Sculpture Studio
  • Location: Spartanburg, SC USA
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #12 on: October 27, 2020, 03:43:59 PM »
There were certain wheels that I traded back then that had a tendency to crack in specific places, even though there was usually no other easily discerned issues damage.  Having a wheel fail at speed is never good. 

I understand where you're at.  My old friend's Ducati F1-B that I often mention suffered a damaged Marvic front wheel during a needless momentary lapse of attention low speed get-off over a decade ago.  Those wheels survived a long race career and are so much lighter & cooler than the stodgy (by comparison) OEM.  The wheel can be repaired but that's not the ideal or desired resolution.  So far, a match to replace it still has not been found. 

1973 V7 Sport  "Now THAT'S a motorcycle!"-  Master Sculptor Giuliano Cecchinelli
1967 V700 Corsa Record
1981 Lemans CX100
https://www.youtube.com/watch?v=ExX3YmQel_Q
http://carolinasculpturestudio.com/
YouTube @carolinasculpturestudio
https://www.youtube.com/channel/UCzSYaYdis55gE-vqifzjA6A

Offline John Ulrich

  • Gaggle Hero
  • *****
  • *
  • Posts: 5345
  • Location: MN & AZ
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #13 on: October 27, 2020, 05:30:42 PM »
Rick,

Did they move the tire on the rim 1/2 a turn?   Worked for me this time last year..... took 3 tries at various Discount Tire stores driving to AZ.  Third guy know what I wanted and worked like a charm.
Eagan, MN & Scottsdale, AZ
MN MGNOC Rep  L#800

Offline roadventure

  • Gosling
  • ***
  • Posts: 226
  • There is no try; There is only do.
  • Location: Millville, Delaware
Re: Dyanbeads for wheel balancing...(NGC)
« Reply #14 on: October 28, 2020, 08:45:49 AM »
Rick,

Did they move the tire on the rim 1/2 a turn?   Worked for me this time last year..... took 3 tries at various Discount Tire stores driving to AZ.  Third guy know what I wanted and worked like a charm.

Don't you hate it when you have to instruct the guy mounting tires on how to do the job correctly?
dave
Millville, DE

"Moto Guzzi....you're never more than 500 miles from your nearest dealer"

***Wildguzzi Official Logo High Quality 5 Color Window Decals Back In Stock***
Shipping in USA Only. Awesome quality. Back by popular demand. All proceeds go back into the forum.
Best quality vinyl available today. Easy application.
Advertise Here
 

20 Ounce Stainless Steel Double Insulated Tumbler
Buy a quality tumbler and support the forum at the same time!
Better than a YETI! BPA and Lead free.
Advertise Here