Ridemalibu Motorcycle Rentals & Tours – Los Angeles CA
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2013 V7 racer flat tire problem!!!

Discussion in 'V7/V85/V9 Chat & Tech' started by son nguyen, Sep 13, 2015.

  1. son nguyen

    son nguyen Just got it firing!

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    hello guys. i have a question. is the 2013 v7 racer rear tire is tubeless? or they do have inner tube? i had a flat last summer. with 2 nails and tires was flat cant make it home. i called for help, friend come over with Tubeless Tire Repair Plug. i plugs both hole and fill it with air and it work, no leak. drove it ever since. and today i was on the road and i found it flat. i pull over at a gas station. fill it with air to see where the leak. and it coming from where all the stroke around the wheel and the valve. now i think it had inner tube but i dont get it, i plug it with Tubeless Tire Repair Plug and if they have inner tube it should not work. please anyone. please let me know
     
  2. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    The Racer's spoked wheels have tubes. Just replace the tube, and you're all set unless the tire is severely damaged.
     
  3. son nguyen

    son nguyen Just got it firing!

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    thanks for your reply. is changing the tube required balance the wheel?
    thanks
     
  4. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    As long as the tire location is marked and return, not necessarily, no.
     
  5. elkgrichard

    elkgrichard High Miler

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    That's amazing those plugs worked with fixing the tube the first time.

    You can seal that wheel with silicon, just put a bead around those spoke nuts and let that dry and then run a good thick bead in the well of the rim to double seal the spokes. You can find a tubeless valve stem at almost any auto part store that will fit that rim.

    NAPA part no. 90-426 is what I've been using for my valve stems.

    If you get leaks around the rim itself just sand it with some 150 grit and shoot the inside edge with sandable primer, it will seal well after that. That primer trick I found out about from a guy that works over at a local tire store. I guess they do that all the time to stop leaks with rims.
     
  6. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    Running tubeless on a tube type rim is not advisable. The profile of the rim is not designed to retain the tire bead when there is loss of pressure. This can result in instant loss of control when the bead of the tire releases from the rim.
     
  7. elkgrichard

    elkgrichard High Miler

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    I've heard that before and have not been able to find proof of that.

    In fact there are companies selling rim tape seals for spoke wheels to turn them into tubeless rims.

    I contacted one company and they e mailed me back saying that the information is false on the internet involving tubeless tires releasing from a tube style rim. No difference exists between the two wheel designs with the bead area of the wheels.

    I was concern with that myself and checked it out. It's OK to seal the wheels.

    I always ride and keep one eye on the tires anyway. It all goes back to the days of playing with Tonka trucks in the back yard. It was the wheels that got me hooked on them Tonka trucks.
     
  8. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    Just look at the profile of a tubeless rim vs a tube type rim. The tubeless rim has a lip to help retain the bead, the tube type does not. I've changed plenty of both and have seen the difference.
     
  9. elkgrichard

    elkgrichard High Miler

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    I'll have the mother in law test drive this before I get on the freeway with it.

    I think the issue is more a case of running a tube style tire with a tube on a tubeless rim. I've heard of that one before many years ago.

    Running a tubeless tire without a tube is actually less likely to release on a tube style rim.

    I think it's that people confuse or reverse that information.

    It's sort of like the old argument with leaded and unleaded valves back in the 70's when people were spending money getting valve jobs to be prepared for unleaded and low lead fuels. It turn out they found out the old valves work harden and heat cycle harden naturally anyway. There never was any reason to have those valve jobs, it turn into a scam or scare tactic to shyster folks.

    I think probably people who sell very expensive rims that are spooked for tubeless tires could be trying to put out false information that sealing your wheels is somehow unsafe.

    Let's face it the motorized vehicle industry have always attracted, shall we say the unscrupulous types with false or exaggerated claims most often connected to the up-sale.
     
    Last edited: Sep 30, 2015
  10. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    Let me relay a personal experience. For may rears I would demo ride for Moto Guzzi North America. On one of the Demo rides in Asheville NC I was riding tail in case any of the general public test riders had an issue. Coming off the Blue Ridge Parkway and onto I 40 the bike ( and EV) got a little squirelly. Sure enough I picked up some steel in the back tire. I was about 5 miles from the demo staging area and I know my partner probably wouldn't come looking for me. So I slowly rode the bike to the demo area. Once I go into the parking lot, the bead released from the rim and no more ride in her. We power walked the bike to the staging area, removed the wheel and had the local Guzzi dealer at the time replace the tire. Let us say the slow ride was nerve racking, but once the bead let go, it was over. Luckily I was upright and just stopped without falling over. To this day I will not ride a bike with tubes as the bead will break much sooner that with a tubeless system. Your tires are all that is between you and disaster. If you choose to take the risk, it is up to you.
     
  11. elkgrichard

    elkgrichard High Miler

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    I hear you, I've had the same experience with tubed tires myself. Once with a rear flat with a tube on an old Bonneville, when that sucker blew I was all over the place, it was hell just to get the bike over to the side of the road, any attempted inputs became exaggerated.

    The tubeless tires have a thicker wall and the side walls are stiffer, so when they lose air you have more control. That is more to do with the design of the tire and not the rim.

    A tubeless tire on any rim be it spoke sealed/unsealed or mag with or without a tube is safer.

    A tire that requires a tube will not seal itself onto any rim because the bead is different.

    For example my front rim is sealed on my Bonneville but I'm running a K-81 tube type tire on it so I'm running a tube even though that rim is sealed. Next tire I put on I'll make sure it's a tubeless tire and won't run a tube.

    Sealing rims is a safe practice but you must run tubeless tires for it to work without the tubes.
     
  12. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    All I will say at this point, that even mags that were designed for tubed tires were modified by machine shops to add a ridge for tire bead retention. The area where the tire bead sits is different no matter what the guy who sells the sealing kit says. Without that ridge, no bead will be retained at all. I'm done with this topic.
     
  13. elkgrichard

    elkgrichard High Miler

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    I've looked at the inside of my mag wheels for tubeless tires and the inside of the rim on the tube spoke wheel and I can't see any difference in the ridge or bead area or any of that. It's the same exact dimensions on both wheels on the inside part that conacts the bead?

    Can you show me the picture showing the difference between both types of wheels? Because if something like that is going on I want to research this a bit more?

    So a machine shop re machine a wheel to except tubeless tires? PICTURES?
     
  14. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    Don't have pictures. All the tube type rims I've worked on were older BMW and Guzzi rims (Borlani) and don't have the ridge. I don't take pictures of what I work on. Don't take the time to do it.
     
  15. elkgrichard

    elkgrichard High Miler

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    That's the problem with the internet it's difficult to sometimes get the thought across without pictures or sketch of some type.

    I'll check into this difference a bit more and find out more about any machine difference built into wheels that are design for tubeless tires.

    First I've heard of this. I always understood that the wheels were all the same design, and it was more a case of the tires beads being design different between the two style tires, that's obvious just looking at the beads, the rims not so obvious or so at least not to me thus far.

    Thanks for that information.
     
  16. Cam3512

    Cam3512 Tuned and Synch'ed

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    All of my Guzzis have had/have tubed tires. But they "tubless" tires WITH tubes.
     

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