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Barnett Clutch spring conversion

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  • Barnett Clutch spring conversion

    Good day guys. I will be doing the Barnett clutch spring conversion after I have notice slight slipping on low to mid rpm cruising along highway speeds. Is there any advice on installing this kit other than checking friction disks thickness? Is the only other thing to buy is clutch cover gasket? After owning my bike for the past 7 years it just doesnt feel the same. All in all it runs good but just this slight slipping feeling similar to a slight on / off feeling when cruising constant higher speed.

    Feedback much appreicated. JC

  • #2
    All I bought was the Barnett pressure plate and springs kit and a new cover gasket. Installation was fairly straight forward just a lot of bolts to remove and getting the old gasket off of the engine case was a bitch. Clutch works great now!

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    • #3
      Use a Roloc type scrubbing disc for cleaning stuck on gasket.

      Comment


      • #4
        Definitely use the Roloc disc! But, be a bit gentle with it, as the aluminum will score and gouge rather easily. Gasket is gone in a heartbeat!

        Also, if you use a proper gasket maker, sealer, in a tube and follow the directions.... you don't need to buy a gasket. I did that, and she doesn't leak at all.

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        • #5
          Change the throw out bearing also to the style that can take the increased lateral force. The OEM one can eventually fail. Someone here will give you a part number.

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          • #6
            Check with TimB about the Barnett. He can probably supply it and the gasket. Send him a PM. He may see this thread if he’s not watching Lone Ranger reruns.

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            • #7
              Any links to the Roloc cause I see there are different types and grit. Also who makes the other type of throw out bearing?

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              • #8
                This is the bearing you want. https://www.amazon.com/gp/product/B002UEFJ1Y
                Put the plate in the freezer for a few hours. Then use a socket of the same diameter to tap out the old bearing. Put the new bearing in the freezer for a few hours, and the spring plate in a hot oven. The new bearing will drop in, or at least tap in easily.

                Also, it's very import to follow the torque directions for the plate bolts. You're bolting into an aluminum boss. If you over tighten those bolts the boss pillars will beak. I speak from experience. And that boss is a difficult part to find. The spec for the standard Barnett springs is only 5.8 ft.lbs, or 69.6 in.lbs. If you don't have a torque wrench I would get one. Tighter is not better in this case. I also use the torque wrench for the clutch cover bolts. They're also easy to strip.

                Here's a good tutorial that includes the oil drive gear. https://www.roadstarmagazine.com/ima...mp_install.pdf

                I used a Roloc Scotch-Brite fine grit disc, like these:https://www.amazon.com/Scotch-Brite-...dp/B00US4W0KG/

                My local Napa has them in stock individually. They work best with an air tool, or maybe a variable speed drill. But like others say, take your time and go easy. Even the fine one can gouge the aluminum gasket surface. But if you do it right the old gasket comes right off. Much better than a gasket scraper.
                Last edited by Tykes_Place; 08-29-2018, 01:07 PM.
                Manuals, Roadwing, other stuff
                PGR
                PGT MT

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                • #9
                  Darrel, is that the same design as the OEM bearing? If so, it’s not wat some folks here have recommended. I remember some recommending a roller bearing vs this ball bearing which takes the increased lateral pressure from the Barnett.

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                  • Tykes_Place
                    Tykes_Place commented
                    Editing a comment
                    I had to look up it from an old post. You might be right. But I don't remember roller bearing vs ball bearing. I can see the logic of that though. In any case the bearings in this one are encapsulated much better than the Barnett bearing.

                • #10
                  Thanks guys for the updates. Has it been an issue in the past not changing the throw out bearing? Or is it only a since your in there kinda add on to the list? I dont mind doing it but has many seen or had to change out cause of the Barnett setup? Any threads about this in the archives that i could look over. Just for information thats all I dont doubt all the info here i just research things to death thats all.

                  Comment


                  • Tykes_Place
                    Tykes_Place commented
                    Editing a comment
                    Right. It was covered extensively on the old forum.
                    As long as your in there it's an easy swap and good insurance for about $10. I also went with the heavier springs with my conversion, so I wanted the extra strength for the bearing.

                • #11
                  7003B angular contact bearing. I’d do The swap after looking at some of the failures.


                  7003B Bearing Angular Contact 17x35x10 Ball Bearings VXB Brand https://www.amazon.com/dp/B002UEFJ1Y..._WvVHBb8GTPW2A
                  Attached Files

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                  • #12
                    Ok so i am going thru the stock parts fiche and see there is only one large spring in there is this correct (#25)? And this is being replaced with the Barnett plate along with 6 springs thus adding more force onto the bearing. Just getting things in line on how it functions. And is the stock OEM and EBC spring replacement only a single spring as in the fiche? I have read some had done this with success but some others wish they had gone Barnett.

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                    • #13
                      Originally posted by Jclevesque View Post
                      Ok so i am going thru the stock parts fiche and see there is only one large spring in there is this correct (#25)? And this is being replaced with the Barnett plate along with 6 springs thus adding more force onto the bearing. Just getting things in line on how it functions. And is the stock OEM and EBC spring replacement only a single spring as in the fiche? I have read some had done this with success but some others wish they had gone Barnett.
                      Yes, OEM and EBC same as diagram.

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                      • #14
                        EBC

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                        • #15
                          How many bearing failures have there actually been?

                          I’ve done a couple Barnett’s and no bearing issues...

                          Comment


                          • #16
                            ive just changed my clutch spring to the barnetts clutch,,never knew that we would also need a bearing swap,,yet the part is made for the yamaha..i guess anything can fail tho.thought id done my homework on the spring but found this post today..

                            Comment


                            • #17
                              It don't need a bearing swap. Barrnett knows what they are doing when they designed these things. ride on with no worry.

                              Comment


                              • #18
                                Hey, just learned from the FB side that if you remove the cover, and soak the gasket residue with WD-40 spray, and let it set... The gasket crap practically falls off!!!

                                Comment


                                • #19
                                  Paint stripper is a good product to remove old gasket leftovers. Been doing this on my XS 650 bikes for a while.

                                  Comment

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