Chain adjustment question (rear sprocket has wear from the link sideplates)

Discussion in 'Mechanics Garage' started by woody77, Aug 9, 2015.

  1. rhoderage

    rhoderage New Member

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    I'd probably run it by a shop to have it checked out... last thing you would ever want would be to lose the chain at speed; it could be minor, horrific, or even fatal.
     
  2. Badbilly

    Badbilly Official VFRWorld Troll Of The Year!

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    Maybe Norcalboy will chimp in with how to sou Honda.
     
  3. NorcalBoy

    NorcalBoy Member

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    The best way to find out if it is tweaked is by using a GMD Computrack or Scheibner Mega-m.a.x. type chassis measuring system....don't know if such equipment exists in France, but it would be worth it to check around.
     
  4. NorcalBoy

    NorcalBoy Member

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    You really are messed up, dude. Pathetic. Being an internet bully is for children.
     
    Last edited: Aug 23, 2015
  5. woody77

    woody77 New Member

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    ::head desk:: I'm back in California (Palo Alto), have been for a year. Let me go update my profile.
     
  6. Badbilly

    Badbilly Official VFRWorld Troll Of The Year!

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    I am aware that sites like that exist. I defer to your expertise.
     
  7. Badbilly

    Badbilly Official VFRWorld Troll Of The Year!

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    Welcome back! I hope you have changed your Francs for Pesos and grown accustomed to the new 12 0z Lb.

    Palo Alto being very high tech possibly has all that equipment and a real dynamometer. I would sure check prices on what it would cost to do all this work and compare that to what the bike is worth.

    IMO there is a distinct possibility that the major problem is being caused by an error in part numbers. Just for shits and giggles, call and talk to a two or more suppliers of Honda parts and compare OEM parts numbers for your year of bike. The reason for the multiplicity is that so many of the dudes on the other side of the counter or the other end of the phone line are not as old as your bike.

    Back to the thrilling days of yesteryear and more whining from Norcalboy after these words from our sponsors. ;)
     
  8. woody77

    woody77 New Member

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    Badbilly - I went through the parts fiches that I could find online, and everyone agrees that all variants of the 2nd gen VFRs (700/750 A/AC) use the same OEM part: 23801-ML7-P00

    Sunstar specs the 512xx fitment as their equivalent (I was glad to be able to find that on their website). But they list a number of OEM sprockets that are replaced with that (including the older 23800-ML7-000 which was superseded by the 23801-ML7-P00).

    JT doesn't have an OEM part# -> their part number.

    The 3rd gen VFRs spec the 23801-MCJ-000 OEM sprocket, which crosses to the Sunstar 522xx fitment.

    JT has what I'm beginning to think is an erroneous entry in their parts db that lists their JTF333 for the 86-89 bikes, and the JTF339 for the 86, and 86-87 bikes. And the JTF333 is listed as well for the 3rd and 4th gen bikes.

    The other thing that I need to do is get the old rear sprocket cleaned up, and get it on a flat surface. I found that the side of the teeth were worn only in one area, so I'm thinking that perhaps the incident that I linked above may have bent the rear sprocket (or otherwise munged up the alignment of the cush drive).

    ====

    After a shake-down ride yesterday, the chain was sitting against the sprocket, but wasn't tight against it. Today, after riding into work, the chain was sitting perfectly centered on the rear sprocket. But I can see where the link plates contacted the side of the sprocket and transferred some lube. That transfer is only on the outboard side, not the inboard side.
     
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