2013 Beta Evo clutch performance

Discussion in 'Trials' started by DrKayak, Sep 28, 2013.

  1. DrKayak

    DrKayak Retro Rider

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    Looking for input on making the clutch smoother on the Evo 250. I'm running the same oil I ran in my Techno and Rev3 in the Evo. I just don't like the clutch as well as the older Betas. I also get some clutch drag with the clutch lever all the way in when the bike is hot which drags down the idle speed. On the good side, the clutch never grabs when you first drop in in gear cold like the old Betas did.

    Is this lack of skill, is the Evo more advanced or just the nature of the bike? Did the older Betas just have better clutches?

    I pulled the clutch cover looking for the adjustments documented for the Evo 300 and my clutch spring washers are not the "top hat" style, so they can not be flipped to change the tension. Pervious owner said he put the Simplex clutch in it.. Guess he did not like the stock plates...

    Thinking of going to ATF. I trail ride it too with the long range seat and worry the gear box would see less wear with good oil over ATF..

    Thanks for any opinions...
    #1
  2. lineaway

    lineaway Long timer

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    Well, Gordy just did the clutch mod on his today. We`ll be out tomorrow and let you know how it works!
    #2
  3. lineaway

    lineaway Long timer

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    Rode Gordy`s 300 today. Did not notice any drag. It was very quick on release though. Forgot to ask what oil he is using. He does have the upgrade factory slave cylinder. Seemed very smooth.
    #3
  4. liviob

    liviob Been here awhile

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    ATF is good oil! Use type F and set the oil level at 420cc Which is right at the bottom of the sight glass. If you haven't done it yet do the beta clutch mod found pinned in the beta forum at trials central.com.
    #4
  5. Gordy

    Gordy Team Listo

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    I did most of the mod that is on Trials Central.

    I polished and rounded the tabs on the friction disks, filed the grooves clean on the friction pads and generally cleaned them up. I understand that glue can get embedded into the friction surface and this can cause some drag but don't know about that. I suppose if you really want to do it right, you would get some new disks and modify them before you ever used them. :dunno

    We are using this oil and it has helped a lot.

    [​IMG]


    I can find neutral with the engine running and the click into first is pretty smooth.
    I am sure that my clutch is not perfect but at my skill level, it works just fine for me.
    #5
  6. motobene

    motobene Motoing for 44 years

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    I rode Ron Lee's sparkly new Beta Factory 300 at the Peru, KS 2-day. Nice bike. I liked the clutch. A Beta rider who rode it next asked him about it. Ron said it was something changed and new. I quipped, "It feels more like a GasGas clutch." Whatever those changes were they work. Don't ask me about them because I don't know, but poke around. Someone savvy with Beta might know what they are.
    #6
  7. lineaway

    lineaway Long timer

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    Ron must have stole one of the factory clutches while working in the pits at the world round. It is not even close to what is in the common evo!!
    #7
  8. Gordy

    Gordy Team Listo

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    Mine supposedly has the "factory clutch" from the BYOB program, but I have no idea what that is.

    Curtis says it is just something that they put on your creidit card. :rofl
    #8
  9. laser17

    laser17 Been here awhile

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    This what comes in the GasGas BYOB program.
    [​IMG]
    #9
  10. lineaway

    lineaway Long timer

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    Dabill and Fajardo had a new clutch design at the world rounds. Something about sliding on pins and black magic. Ron was wrenching, weather he has this setup only he would know.:evil
    #10
  11. DrKayak

    DrKayak Retro Rider

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    Thanks for the input. I'm likely running my oil level too high. Will try reducing it some. It came with ATF and I would switch off between the Techno with oil and the Evo with ATF and could not see any difference. Then put oil in the Evo and same deal, no big difference.

    I can go in and out of neutral easy when it's cold. Not so, once it's hot. "very quick on release though" as lineaway said sounds like mine. Not unrideable but can't say I love the clutch.

    Will get to work on making it better.

    Try to talk to guys is the club and the #1 answer is... "I would have never bought a Beta anyway..." :lol3

    Looks like the 250 does not have the adjustments the 300 has in the below doc.

    http://www.americanbeta.com/sites/default/files/pdf/STT-2012-3-Evo%20300%20clutch%20set%20up.pdf
    #11
  12. Gordy

    Gordy Team Listo

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    The upgraded BYOB clutch that I got with mine has billet parts and race steel plates (for whatever that's worth).
    I see where they also have available Surflex friction plates.
    I may try some of those with some of the adjustments in the PDF that DrK linked at some point down the road. I can't leave well enough alone. :lol3
    #12
  13. lineaway

    lineaway Long timer

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    Bunch of newbies talkin` in your club. The Beta has always been a quality ride. Many an old rider in CA die hard B guys. Go back through the years in the nationals and Beta is still close to top dog. Just have not had any pro riders during the Como years. So Cody is on a lemon? Ha! Ha! By the way Cody rode his first national on a Beta.
    #13
  14. DrKayak

    DrKayak Retro Rider

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    The pervious owner said he put the Surflex friction plates in mine. Still think is was not dragging when warm when I first got it..

    A beater, never washed, GasGas is the bike of choice for the local young guns. We have one old and wise rider that loves the Betas. :clap
    #14
  15. lineaway

    lineaway Long timer

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    And he is an old friend of mine.
    #15
  16. Gordy

    Gordy Team Listo

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    I know that this is a clutch thread but you couldn't make me go back to a GasGas.
    Any one that designs and sells a bike that the tire wears a hole in the muffler on a regular basis doesn't get my $$. In all fairness, GG has fixed that now and they just melt the ends out of them! :lol3
    #16
  17. Sting32

    Sting32 Trials Evangelist

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    The design cause the rear tire to wear out the muffler? I say it wasn't so, someone fell off the bike bent the muffler, end of story.

    Now the plastic tipped muffler, yeah is pisses me off too! But like my favorite Foot pegs, for a while I can take my aluminum tip replacement one, with me bike to bike I guess. I have had my pegs since the 2006 pro... fwiw...
    #17
  18. motobene

    motobene Motoing for 44 years

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    I'm just remembering Ron said something about grooving or modifying the plates with a twinkle in his eye.

    Ron and I were close together going round the loop at Peru. He said it was hour 3 on the bike (sure was pretty with those blue rims). He certainly rode it well doing non-comp in my class.

    When I rode Blue Rims (as I said before) I sure liked the handling. Very planted yet tight turning. I noticed doing a small drop off with a hard landing that the rear end felt firmer than my 2011 Reiger-Raga... as in less plush. It felt more like my Econo with the Ohlins (elliptical-tube frame with the previous linkage). My brain has been pondering recently the role of linkage rising rate and lateral stability. On the level of more plush versus more 'planted.' Then again, I may be pursuing phantoms :huh

    As for the clutch issue, I noticed one rider on a newer Beta idling in neutral just before entering the section. There was a call of 'Rider!' and he snicked into first with a pop of gear engagement, lever pulled fully back to fingers. The bike pulled forward a little with clutch drag and tweetie-purring noises like Aprillia Climbers used to make. Ron's bike didn't do that... for whatever reason.
    #18
  19. Gordy

    Gordy Team Listo

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    It is well known to space out the muffler at the midpoint mount to try and keep it away from the tire. The least little fall to the right WILL bend it into the tire. Heaven forbid that a trials bike falls over. :rolleyes
    Only the GG riders can be caught pulling on their mufflers to bend them back. Yes.....it's that cheesey. You can bend it with your hands. That is the end of the story. :rofl
    Don't get me started on the kickstarter or the tranny or the :scratch.
    #19
  20. DrKayak

    DrKayak Retro Rider

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    That's what mine does.. that tweetie-purring noises is how I can tell the clutch is dragging. I can sit at the start of a section in first but the clutch drag pulls down the idle speed to were it's very low.

    The new muffler design on the Evo is great for sure. My Techno had bad wear on the back of the muffler. Love the Evo kick stand too. As often as you stop to scout a section a good stand is a plus..
    #20