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Front tyre bounce/vibration

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  • Mitchleeey
    Mitchleeey
    2 years ago
    Quoting steelo on 12 Jun 2021 03:51 AM

    Hi ml. Sorry to hear. I’m out of ideas. I supposed the tech examined and check balanced the wheel prior to fitting the tyre 

    Yeah it was all done. Booked in for the 18th again, see if they can find the problem further up the forks maybe. 
  • Far Canal
    Far Canal
    2 years ago
    Quoting lankbrown on 12 Jun 2021 12:12 AM

    Not too many 21” tyres that are designed for the weight of a Harley.

    Quoting Soapbox2627 on 12 Jun 2021 02:45 AM

    I had no issue with the 21 on my nightrain

    What tyres were you using on your night train SB?.
  • Soapbox2627
    Soapbox2627
    2 years ago
    being spokes, could it be laced offset??
  • Mitchleeey
    Mitchleeey
    2 years ago
    Quoting Soapbox2627 on 12 Jun 2021 04:32 AM

    being spokes, could it be laced offset??

    No spokes mate, just the stock rim with the stock HD tyre 
  • steelo
    steelo
    2 years ago
    You’re not using a brass or right angles valve extension? 
  • Mitchleeey
    Mitchleeey
    2 years ago
    Quoting steelo on 12 Jun 2021 04:51 AM

    You’re not using a brass or right angles valve extension? 

    Nope, just stock. 
  • Far Canal
    Far Canal
    2 years ago
    Quoting steelo on 09 Jun 2021 04:21 AM

    Hi there. Any outcome in this. Did you get a new tyre. 

    Quoting Mitchleeey on 12 Jun 2021 03:30 AM

    No luck, changed the front and back tyres, it’s a brand new rear rim. Possibly a damaged front rim, still getting the bounce. Could it be anything else…? 

    Well that'd be enough to give anyone the shits.
    Did they balance the new front tyre?. If they did it should have some sort of weights stuck to the rim. Or, if you get the front wheel off the ground and spin it a few times it should stop with a different part of the wheel facing down each time it stops spinning.
    You mentioned before that the rim looked true, so that should rule the rim out.
    Other than that the wheel bearings may be suss. When they are about to self destruct it feels like you are riding on a bumpy road when you are not.
    Some bike shops do not check the bearings when they put a new tyre on. Last time I had a new tyre put on the rear of my FXST I asked the bloke in the shop if they checked the bearings when I went to pick it up?. He put his finger in the bearings I.D and the bearings O.D wobbled around in the hub. In other words the hub was rooted. Had to get em to take the tyre off again. Took the wheel home, bought an aftermarket hub as HD did not have hubs from a 2008 model as a spare part, laced it back to the rim and got the shop to fit the tyre again.
    Could have ended badly, worth finding out what is wrong.
  • robnicko
    robnicko
    2 years ago
    see if you can try another front rim from another bike, if problem persists id be looking at steering head bearings and also front & rear wheel bearings. Replaced the ones on my neighbours Breakout rear wheel as it displayed what he described as a knocking /sound accommpanied by a wobble through the whole bike at freeway speeds.
    when I lifted the bike there only seemed to be play in the rear wheel bearing at a particular area within the wheels circumference. When I removed the bearing it was toast and missing a couple of balls


    also, check you dont have a slightly warped front rotor


  • Mitchleeey
    Mitchleeey
    2 years ago
    Quoting steelo on 09 Jun 2021 04:21 AM

    Hi there. Any outcome in this. Did you get a new tyre. 

    Quoting Mitchleeey on 12 Jun 2021 03:30 AM

    No luck, changed the front and back tyres, it’s a brand new rear rim. Possibly a damaged front rim, still getting the bounce. Could it be anything else…? 

    Quoting Far Canal on 12 Jun 2021 08:05 AMedited: 12 Jun 2021 08:15 AM

    Well that'd be enough to give anyone the shits.
    Did they balance the new front tyre?. If they did it should have some sort of weights stuck to the rim. Or, if you get the front wheel off the ground and spin it a few times it should stop with a different part of the wheel facing down each time it stops spinning.
    You mentioned before that the rim looked true, so that should rule the rim out.
    Other than that the wheel bearings may be suss. When they are about to self destruct it feels like you are riding on a bumpy road when you are not.
    Some bike shops do not check the bearings when they put a new tyre on. Last time I had a new tyre put on the rear of my FXST I asked the bloke in the shop if they checked the bearings when I went to pick it up?. He put his finger in the bearings I.D and the bearings O.D wobbled around in the hub. In other words the hub was rooted. Had to get em to take the tyre off again. Took the wheel home, bought an aftermarket hub as HD did not have hubs from a 2008 model as a spare part, laced it back to the rim and got the shop to fit the tyre again.
    Could have ended badly, worth finding out what is wrong.

    HD reckons that the 18up Breakouts do this (and some FatBoys 18up)....  I jumped on the demo Breakout they had, sure enough same shit! Lost for ideas. Should I just put up with it? I've got a lowering link on my rear shock, makes it slightly worse than the stock bike. Might have to chuck air ride on the bike and try find a sweet spot.. could be some sort of geometry design flaw..
  • Far Canal
    Far Canal
    2 years ago
    Quoting Mitchleeey on 12 Jun 2021 03:30 AM

    No luck, changed the front and back tyres, it’s a brand new rear rim. Possibly a damaged front rim, still getting the bounce. Could it be anything else…? 

    Quoting Far Canal on 12 Jun 2021 08:05 AMedited: 12 Jun 2021 08:15 AM

    Well that'd be enough to give anyone the shits.
    Did they balance the new front tyre?. If they did it should have some sort of weights stuck to the rim. Or, if you get the front wheel off the ground and spin it a few times it should stop with a different part of the wheel facing down each time it stops spinning.
    You mentioned before that the rim looked true, so that should rule the rim out.
    Other than that the wheel bearings may be suss. When they are about to self destruct it feels like you are riding on a bumpy road when you are not.
    Some bike shops do not check the bearings when they put a new tyre on. Last time I had a new tyre put on the rear of my FXST I asked the bloke in the shop if they checked the bearings when I went to pick it up?. He put his finger in the bearings I.D and the bearings O.D wobbled around in the hub. In other words the hub was rooted. Had to get em to take the tyre off again. Took the wheel home, bought an aftermarket hub as HD did not have hubs from a 2008 model as a spare part, laced it back to the rim and got the shop to fit the tyre again.
    Could have ended badly, worth finding out what is wrong.

    Quoting Mitchleeey on 07 Jul 2021 02:41 AM

    HD reckons that the 18up Breakouts do this (and some FatBoys 18up)....  I jumped on the demo Breakout they had, sure enough same shit! Lost for ideas. Should I just put up with it? I've got a lowering link on my rear shock, makes it slightly worse than the stock bike. Might have to chuck air ride on the bike and try find a sweet spot.. could be some sort of geometry design flaw..

    "HD reckons that the 18up Breakouts do this (and some FatBoys 18up).... "!
    Really?!. Sounds like a fob off to me.
    HD is aware of it but will not fix it under warranty seems to be closer to the truth of the matter fyarsk me.
    Front wheel should not bounce like that, there must be an underlying reason why it happens.
    I can't imagine a 2020 breakout would have been cheap, if it has a problem HD should fix it under warranty. I do not see HD using "FRONT WHEEL BOUNCE", as a marketing lure/ploy for 18 up Breakouts or Fatboys. If they did no one would buy them.
    You probably need to get the front wheel in the air and get/borrow a dial gauge (or even use a cable tie around your front fork and position it close(cunt hair) to the rim  to determine if your rim has a dent in it. You should be able to do that without taking your new tyre off.
    I did have a bounce develop once on my FXST that felt like I was riding on a bumpy road, just before the rear wheel bearing flew into lots of pieces.

    You did mention in the very first post that your bike "developed" the bounce. Suggesting that it did not do it at first.
    Should you just put up with it?. Don't think I could.
  • Krash Kinkade
    Krash Kinkade
    2 years ago
    Quoting Mitchleeey on 14 May 2021 09:26 AM

    Hey All,


    After some advice. I have around 9k on my front tyre. Not sure if it’s the tyre or something else but I’ve developed a ‘bounce’ at speeds above 80kph. I’ve jacked the bike up and checked the tyre whist it’s in rotation. I’ve noted 2 spots with about 2-3mm tyre height deviation. You reckon this might be the cause?

    Hi Mitchleeey , at first I thought you meant when bike is idling front wheel bounces ( mine does it, bit like an old Triumph ) but once I'm moving it is smooth.
    that's bad if you have wheel bounce at speed! Do you mean front fork's very stiff & if you hit a bump it bounces? Or do you mean out of round wheel or Tyre?
  • beaglebasher
    beaglebasher
    2 years ago
    Yeah Mitch you might want to give us more details mate. 
    I doubt any new bike out of the factory would bounce like you describe. 
    The dealer is telling you that Breakouts do that?  And some Fatboys?  
    Never heard of that one before.  My money is on a damaged rim or tyre or bearing.
  • steelo
    steelo
    2 years ago
    Friends
    Check out this 2020 thread on another forum
    Talks about issues with Michelin Scorchers

    I usually hate threads where the next guy posts a "same thing happened to me but worse" as though his same issues described in a different way will magically solve the problem.

    Funnily enough, got a new tyre on the Deuce Last week, Indy fitted a "Michelin Scorcher" slightly lower profile on the front wheel from a Dunlop.
    I knew as soon as I got on it something was wrong, pulsing up and down vibration from about 40km/hr.
    Went straight back, they used a static balancer and balance was only out small % of an ounce. They added weights, balanced it again It was perfect!! and off I went.
    It was just the same. I thought I was losing my mind (mechanic couldn't check it because he lost his licence)
    Dropped in at my other dealer on the way home (highly embarrassed with tail between my legs) who did take it for a ride. He reported something definitely wrong. He has heard of issues with the Michelins not being round (or some sort of manufacturing fault) He rang the first guy and they will go back to the Dunlop and get one in for me.
    I tried to test ride it at speed up the south eastern freeway but the vibration, pulsing got progressively worse and so I went home.
    I put the bike on the bike lift and I can hardly turn the front wheel. I'm wondering if in conjunction with the tyre being suspect, the mechanic has put wrong order of washers back on the axle.
    Anyway, I'm not losing sleep worrying about it at the moment. Just waiting for the new tyre to come back in to check the tyre and the axle spacers?
    I'll report back.

    Not having a shot at Michelin or my mechanics. I'm waiting and watching.
  • WideglidingNZ
    WideglidingNZ
    2 years ago
    yeah try another brand of tyre, i never have had much luck with Michelin scorchers 
  • Far Canal
    Far Canal
    2 years ago
    The "Michelin Commanders", afaik have never had bouncing issues. Have used quite a few of them and although not thoroughly thrilled with the way they wear must say none have bounced.
    Assuming they are still available.
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