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  • brake disc cover

    Hi bikers

    Who knows why there is added weight on the right flange on the Wildstar?
    I can't find an explanation for that!

    Thanks for the info if you know


    Click image for larger version

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  • #2
    The weight is to eliminate vibration harmonics on the front wheel from the brake discs. Some people remove the pies and have harmonics issues and some don't.

    Comment


    • #3
      It also don't have to be on the right side. it don't matter what side it is on.

      Comment


      • #4
        Originally posted by Shores View Post
        The weight is to eliminate vibration harmonics on the front wheel from the brake discs. Some people remove the pies and have harmonics issues and some don't.
        Ok thanks but how does it work?
        And why exactly on the right and not on the left?

        Comment


        • #5
          Originally posted by davej View Post
          It also don't have to be on the right side. it don't matter what side it is on.
          on the workshop manual it is clearly specified on the right

          Comment


          • davej
            davej commented
            Editing a comment
            trust me it makes no difference. not sure why they would say it can only go on the right side. it's not rotation specific nothing directional about it at all. It is a weight glued inside the pie dish. it has no idea what side it is on.

          • davej
            davej commented
            Editing a comment
            what manual did you find it in that it specifically went on the right side? I can't find it in the Yamaha manual. what I found didn't say that it specifically only went on the right side. All it said was that you will find it on the right side when you disassemble the front wheel and brake disc.

        • #6
          The Yamaha parts catalog shows it on the right but it really doesn't matter. It works by adding asymmetrical weight which defeats any vibration or harmonics that might occur . It's the anti-musical instrument.

          Comment


          • #7
            As said it don't matter what side it is reinstalled on. The book has to show it on one side in particular. That is the only way it can be distinguished in the parts fiche. It is also installed at the factory on an assembly line and installing on the same side in every case is the only way to have any accountability for the weighted part and to insure quality control.

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            • #8
              It's not just in the spare parts it's well specified in the workshop manual

              Click image for larger version

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              • #9
                This weight also exists on the 1900, and it is also placed on the right

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                • #10
                  probably the same assembly line. They had to choose a side because there is only 1 and when they flipped the coin right side won the toss. Don't over think it.

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                  • #11
                    It should be pretty obvious, the right side is the "correct" side.

                    Comment


                    • #12
                      If you have a cast wheel look real close at it and you will find a directional arrow on it. That makes no difference either. I'm sure that was put there for assembly purposes also. Probably so they could make sure the weighted pie dish was gonna be on the right side. I always used to laugh when a car would come into the shop for a brake job on a drum brake and I would find the push retainers on the wheel studs had been reinstalled from the last person that did a brake job. Those push retainers were installed at the factory only to hold the drum in place while the vehicle was moving down the assembly line awaiting tire installation further down the line. If you looked it up in a parts fiche they probably showed them installed and even sold them to those that wanted to buy them. lol

                      Comment


                      • brianmac
                        brianmac commented
                        Editing a comment
                        yes, i noticed the arrow on the cast wheel , last week, i did not want the universe to be out of sync, so i installed it correctly on the new trike, however, i used a rear tire spinning opposite the tire arrows as recommended......

                    • #13
                      Ok it's possible but all this is just guesswork

                      This gives me no answer, other than the possibility that it is to reduce vibrations.

                      because I don't think the engineers and designers just had too much weight and we just found this place to put it!
                      And we put it on the right because the guy on the assembly line was right-handed

                      Comment


                      • davej
                        davej commented
                        Editing a comment
                        It isn't just because they had extra weights. Read Shores post above about harmonics. Have you ever turned a brake drum or rotor? I have and when you do you use a rubber weighted strap to stop harmonics while turning them. Also if you have 2 pie pan covers and only 1 weight you have to choose a side. Have you ever worked on automotive assembly line? I have and some things are just that simple. If you don't like these answers look for the engineer that designed it and ask him.

                    • #14
                      Thank you for your comments, not that I don't like your answers, what I'm trying to understand is: the why.
                      You talk to me about the assembly line, I suppose you worked on it, if as you say it's a question of ease, why didn't you make just one model.
                      Because this weight is quite precise + 267 grams
                      that's the easiest, only one reference and no need to choose the part, to store separately, to reference, etc ...

                      Thank you for your intervention on this post, I will be satisfied with your opinion while waiting to find the engineer who built it

                      Comment


                      • Shores
                        Shores commented
                        Editing a comment
                        We gave you the answer. It's because of the harmonics. Remove them and tell us what happens.

                      • davej
                        davej commented
                        Editing a comment
                        how is that a precise weight? The 1 you have just happens to be 267 grams. when breaking down LBS and OZ's into grams all you did was convert LBS and OZ's into Grams. I'll bet if you weighed another it would be different because they aren't a precision ground made weight. Don't over think it.

                    • #15
                      Yes I know it's precise because the 3 sets of flanges that I have are exactly the same weight and I have a friend who has 2 sets who weighed them so I think it's quite precise
                      The left flask is 411g and the right one 678g
                      you can check it yourself

                      Comment


                      • davej
                        davej commented
                        Editing a comment
                        above you said 267 grams???? I sold my triple beam weed scales years ago when I quit smoking so I couldn't weight it even if wanted to.

                    • #16

                      Comment


                      • roadiemort
                        roadiemort commented
                        Editing a comment
                        Warum Warum ist die banane krumm?

                    • #17
                      This has been bugging me for a long time.....when you guys check the pressure in your front tire, do you kneel on your left or your right knee? Don’t tell me you kneel on both or don’t kneel at all cus that will really blow my mind! Also, why was the gas cap put on the right side of our fuel tanks? Does it matter if I install a custom tank with the cap on the left? If I’m thinking too much and hurting the team, just let me know.

                      Comment


                    • #18
                      Originally posted by Shores View Post
                      This has been bugging me for a long time.....when you guys check the pressure in your front tire, do you kneel on your left or your right knee? Don’t tell me you kneel on both or don’t kneel at all cus that will really blow my mind! Also, why was the gas cap put on the right side of our fuel tanks? Does it matter if I install a custom tank with the cap on the left? If I’m thinking too much and hurting the team, just let me know.
                      I squat, high side works better, don't care how you do things, not my concern lol.

                      Comment


                      • #19
                        With the metal closures and wrapping pretty close, strap that to your hubcap. The Liverwurst is 6.5 "long x 1 7/8" dia. with a girth of 6" and it doesn't get any bigger no matter how you try to warm it up.

                        Comment


                        • #20
                          Originally posted by Bip_Bip View Post
                          Yes I know it's precise because the 3 sets of flanges that I have are exactly the same weight and I have a friend who has 2 sets who weighed them so I think it's quite precise
                          The left flask is 411g and the right one 678g
                          you can check it yourself
                          Indeed I misspoke
                          But it would suffice to do a simple calculation to see that the 267g is the difference in weight between the 2 flanges

                          because I said: "Because this weight is quite precise + 267 grams"






                          And thank you all the same for your answers I will stop with this discussion

                          There are some unimportant things where nothing is specified, or because it is like that, like the shape of the bananas or placing the gas cap on the right sooner than on the left (although there is certainly a reason)

                          But if in the workshop manual says to place this weight on the right you would not make me believe that it is not important

                          Otherwise what reason to specify it !! ............................

                          Comment


                          • roadiemort
                            roadiemort commented
                            Editing a comment
                            Are you aware of the printed mistakes in the workshop manual? Not saying your wrong or right just informing you that this is an undisputed fact.

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