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What have you done to your XS today?

Discussion in 'The Garage' started by I am Carbon, Nov 24, 2013.

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  1. Zombie Killer

    Zombie Killer XS650 Member

    Installed a steering dampener. The bracket is by Dixie International witch picked up from eBay.
     

    Attached Files:

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  2. Diebold2020

    Diebold2020 XS650 Member

    Mocked up setup
     

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  3. bosco659

    bosco659 XS650 Addict XS650.com Supporter

    Nice. I bought my bike with one already installed and wondered if it was really necessary. Did you install yours to address an issue or to increase the cool factor?
     
  4. Zombie Killer

    Zombie Killer XS650 Member

    I installed it because when I get on the highway the front end I will feel it move left to right a bit. I'm gonna take it out this weekend on the highway to see how it handles. .
     
  5. fredintoon

    fredintoon Fred Hill, S'toon. Top Contributor

    Hi bosco,
    IMHO you don't really need a steering damper on a solo XS650 if the steering head races are adjusted properly.
    OTOH my XS650 sidecar rig really benefits from having one.
     
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  6. On my XS2 the steering dampener is infinitely adjustable. Lol.

    Speaking of steering stuff. I installed the Mikesxs tapered bearing kit on my front end about 25K miles ago. I probably adjusted them about 10K ago. Well, I have to wonder if these bearings are correct for this application. Tapered roller bearings are basically for low rpm applications, right? Constantly spinning and wearing somewhat evenly for tens of thousands of miles on a car or truck. I think we can all agree on that, but a few may not.

    Anyway, on our shakey little bikes, these bearings hardly spin a 1/3 of a revolution from lock to lock, and are mostly stationary or might deflect 1 or 2 degrees, if that, from center while riding. Ok, it appears that when I come to a stop that I can sometimes feel a notchiness or flat spot. I suspect that these somewhat stationary rollers are vibrating grooves in the races. In a few weeks when I can walk somewhat normally, I'm gonna pull it apart and inspect to see if my theory is valid. Maybe even install a couple of grease fittings.

    Anyone with similar suspicions?
     
    Last edited: Oct 18, 2020 at 2:06 PM
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  7. Thanks Gary. Question? Have you tried the tapered bearings on any of your bikes? I installed them because my ball bearings looked like they came out of Fred Flintsones car. Like small rocks.
     
    Last edited: Oct 18, 2020 at 2:18 PM
    Paul Sutton likes this.
  8. gggGary

    gggGary I'm listening, change my mind XS650.com Supporter Top Contributor

    Not sure if it's me but yeah prolly 10 or more sets so far. the races are harder than you'd think to get fully seated into the frame cups.
    kind of long story but only one failure, on a royal star, due to improper adjustment.
    BMW used a tapered roller bearing in the final drive, on a joint with only a few degrees of movement. Those bearings are very prone to race brinelling.
    https://www.rexnord.com/blog/articles/what-is-brinelling
    I feel tapered rollers resist brinelling cuz they have contact over a long section where angular contact (ball) bearings have only that small circle of contact between ball and race. I've thought a time or two that some sort of ratchet on the bearing cage could keep the ball positions changing and decrease or stop the denting.
    Haha here's that scheme used in a high load, limited range of motion bearing.
    https://www.motioncontroltips.com/prevent-false-brinelling-rolling-element-bearings/
     
    Last edited: Oct 19, 2020 at 6:16 AM
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  9. A quote from the Rexnord site: "False brinelling is caused by vibrations acting on the bearing while in a non-rotating state." Hmmmm!

    Another quote: "In contrast, false brinelling happens when a bearing design only redistributes lubricant during large rotations of all bearing raceway surfaces. When such bearings only move a little bit, small oscillations or vibrations can squeeze lubricant out of loaded spaces. Then wear begins and only accelerates with move vibrations."

    We will see in a couple of weeks! Thanks Gary!
     
    Last edited: Oct 18, 2020 at 11:06 PM
  10. Paul Sutton

    Paul Sutton Sprained Ankle Top Contributor

    What is brinelling?

    "Brinelling is the permanent indentation of a hard surface. It is named after the Brinell scale of hardness, in which a small ball is pushed against a hard surface at a preset level of force, and the depth and diameter of the mark indicates the Brinell hardness of the surface. Brinelling is permanent plastic deformation of a surface, usually occurs while two surfaces in contact are stationary, such as rolling elements and the raceway of a bearings and the material yield strength has been exceeded. The brinelling is undesirable, as the parts often mate with other parts in very close proximity. The very small indentations can quickly lead to improper operation, such as chattering or excess vibration, which in turn can accelerate other forms of wear, such as spalling and ultimately, failure of the bearing."

    https://en.wikipedia.org/wiki/Brinelling


    Definitely a new word to teach my dog.
     
  11. fredintoon

    fredintoon Fred Hill, S'toon. Top Contributor

    Hi Marlin,
    swapped the stock crowded-ball headraces to Timkens a while back.
    Stock bottom raceway had a full row of little dents in it.
    My thought?
    The bearing book sez that a roller race has 5X the capacity of a same sized ball race.
    That capacity increase plus an added grease nipple should keep the bike's steering OK for WAY longer than I'll be riding it.
     
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  12. lakeview

    lakeview XS650 Guru XS650.com Supporter Top Contributor

    20201014_163329.jpg
    Not Ready For Winter!
    Last fall I told Mrs. Lakeview that she would be parking her car out of the frost and snow in the other bay. Despite storing the FJ09 and a couple XS's off site, between the recycling bins and the garden stuff and my side (pictured today), I ended up scraping the frost off her car all winter.
    Plus I was not happy that the condensation in the storage unit left its mark.
    So the chore to clear my bay to store 2 bikes and still have space for my lift and room to move around commences.
     
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  13. lakeview

    lakeview XS650 Guru XS650.com Supporter Top Contributor

    Sorry to hear that they are restricting your mobility. Be patient and do your physio exercises. Heal quickly!
     
  14. YamadudeXS650C

    YamadudeXS650C Central New York XS650 XS650.com Supporter Top Contributor

    I've had the '76 (Miss June '20) up on milk crates for awhile, initially to fix a left-hand case leak.

    Rotor 004.JPG

    Seemed to be either the primary sprocket seal or shifter seal, so I replaced both.
    Bob's nice photo-heavy thread was helpful
    http://www.xs650.com/threads/replacing-engine-seals-part-one-the-shifter-seal.52589/

    Upon inspection, there was a little bit of uneven drag in front brakes when I spun the wheel.
    I had rebuilt the master back in 2013 when I restored this bike,
    so I decided to rebuild the caliper, even tho the pistons were moving well.

    There was just a bit of corrosion in the bores, and the pistons cleaned up nice with just a rag.

    rotor.0010.jpg

    Installed new seals.

    The brake disk surface wasn't great, with pitting from neglect from the PO; he left the bike outdoors.

    rotor.11.jpg

    So, I sent it off to TrueDisk in Michigan, as I was unable to find someone local to grind a new surface.
    His website is rather impressive. https://truedisk.net/
    On the phone, Tom was friendly and easy to talk to.
    He said he would true the disc first using a mallet.
    Turns out mine didn't need truing.

    He works at home, having a day job.
    Promised me a day or 2 turn-around, but that didn't happen.
    He got it on a saturday, and hadn't even looked at his packages yet when I called on wednesday.
    Did the work on thursday, billed me on Friday, and shipped it that day.

    Looks good:

    Rotor 008.JPG

    Rotor 007.JPG

    The disc was 7.02mm prior to cutting, and 6.86mm after, so he took off .16mm.

    Rotor 006.JPG

    Cost:
    Shipping to him $15 flat rate USPS medium box
    grinding: $ 45
    surprize surcharge $10 for "handling, insurance (no documentation of this provided), Paypal fee"
    return shipping $15

    So, it was $85 total. Nice work, but I think I'll look harder for a local shop to do this next time.

    Gonna put it back together tomorrow........
    .
    .
    .
     
    Last edited: Oct 19, 2020 at 6:21 PM
  15. 650Skull

    650Skull SSSSSSSSSlither Top Contributor

    Good to see no flat surfaces going to waste.........:whistle:
     
  16. lakeview

    lakeview XS650 Guru XS650.com Supporter Top Contributor

    Flat clear surfaces do not last long around me. lol
     
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  17. gggGary

    gggGary I'm listening, change my mind XS650.com Supporter Top Contributor

    Ditto!
     
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  18. Maybe a little pricey, but it looks great! I may search around by me, there's gotta be someone around here.
     
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  19. azman857

    azman857 '80 XS 650SG Rider XS650.com Supporter Top Contributor

    The SG suffered a condition that I had heard of but, I thought she would never get. Fractured swingarm shaft. I had noticed a change of handling but thought it was just need to adjust the chain. Nope. Found the shaft hanging out on the left and the nut and retainer missing on the rt side. Luckily I have a spare in my parts stash. I just have to find the best axle and spacer for the replacement.
     
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