Beta EVO Thread

Discussion in 'Trials' started by garrett, Sep 6, 2014.

  1. alpineboard

    alpineboard Been here awhile

    Joined:
    Mar 2, 2016
    Oddometer:
    457
    Location:
    New Hampshire
    Also Yes, on my new factory, one of the m/f "fast-on" pins was just barely started in the connection , believe it was the yellow, not pushed in all the way. It has a soft plastic shroud , so tricky to see.
    Another check, make sure the wire insulation got stripped before the m/f "fast-on" got crimped. Have seen this before, on other equipment. The pin connector barrel crimp does nothing in this case, and the small pointy sharp insulation grab hooks are the only thing that makes a connection with weird results following time as it corrodes/oxidizes , with possible intermittent results.
    lineaway likes this.
  2. lineaway

    lineaway Long timer

    Joined:
    Oct 1, 2011
    Oddometer:
    6,663
    Location:
    nm
    For the 4T owners, pack of 5 on ebay 20 bucks.

    Attached Files:

  3. lineaway

    lineaway Long timer

    Joined:
    Oct 1, 2011
    Oddometer:
    6,663
    Location:
    nm
    Factory 4t.

    Attached Files:

    LemmeTry, Norman Foley and ADVCoop like this.
  4. 2whlrcr

    2whlrcr gooligan

    Joined:
    Jan 30, 2005
    Oddometer:
    10,499
    Location:
    Dubuque, Iowa
    I really need to ride one of those sometime...
    LemmeTry likes this.
  5. 10K

    10K Trail Runner

    Joined:
    Sep 5, 2004
    Oddometer:
    1,711
    Location:
    Arizona
    Is that your new ride?
  6. lineaway

    lineaway Long timer

    Joined:
    Oct 1, 2011
    Oddometer:
    6,663
    Location:
    nm
    No, but I stole the crate!
    LemmeTry and Norman Foley like this.
  7. LemmeTry

    LemmeTry Over-thinker...

    Joined:
    Jan 27, 2016
    Oddometer:
    134
    Location:
    Jasper, TN
    What's the likelihood of finding a used 250 4t? I'd like to find one for my wife.
  8. ADVCoop

    ADVCoop Long timer

    Joined:
    Aug 22, 2007
    Oddometer:
    1,056
    Location:
    Springtown TX
    I see 300's used fairly often but not 250's. My 300 is pretty easy to ride though.
  9. LemmeTry

    LemmeTry Over-thinker...

    Joined:
    Jan 27, 2016
    Oddometer:
    134
    Location:
    Jasper, TN
    That's true. I love my 300 4t! So maybe I should buy another 300 for her.
    ADVCoop likes this.
  10. ADVCoop

    ADVCoop Long timer

    Joined:
    Aug 22, 2007
    Oddometer:
    1,056
    Location:
    Springtown TX
    I am very happy with this bike. I haven't ridden a trial on it yet but I have been riding it a lot here at home practicing.
    Norman Foley likes this.
  11. alpineboard

    alpineboard Been here awhile

    Joined:
    Mar 2, 2016
    Oddometer:
    457
    Location:
    New Hampshire
    Did the Beta Clutch Fix on my 16 evo, of the 6 friction plates, the interior and exterior are thicker plates, 0.115" and the pads are more tightly spaced, approx. 1/16" space, there was epoxy build up on these that I scraped/cleaned. The remaining 4 friction plates, .105" thick , the pads have a good 1/8" of space between them , with barely any epoxy in this space, a few thousands maybe, but seeing they were out, I gave them a quick scrape.

    And flattened/squared the friction disc tabs with a small hand file, easy. If you looked hard at 2 of the metal plates, they were just starting to show the tiniest amount of polishing, the rest of the metal plates looked like new. I was expecting to see more wear , as I had been slipping the clutch plenty at times. And the friction plates did not show any sign of wear, damage or burn. So I guess this is good news, slip away and slip it some more. Bike total ride time =166 hrs

    Need to test this, but it is snowing.
    MyFriendofMissouri likes this.
  12. alpineboard

    alpineboard Been here awhile

    Joined:
    Mar 2, 2016
    Oddometer:
    457
    Location:
    New Hampshire
    Contrary to some info out there, Factory setting top hat position was small part of washer facing interior , which means possibly more wear/slip. There was absolutely no wear, or even slip as far as I could tell. I re installed the top hat washers, small part facing exterior, which is supposed to be more aggressive, quicker hook up, smaller slip zone, less wear. It was not a problem, so never had checked it. Just giving the entire bike a yearly service.
  13. alpineboard

    alpineboard Been here awhile

    Joined:
    Mar 2, 2016
    Oddometer:
    457
    Location:
    New Hampshire
    yes , a 2t, and here is the pdf from beta showing the choices available if you move the outer discs around.

    http://www.betausa.com/sites/default/files/pdf/STT-2012-3-Evo 300 clutch set up.pdf

    my bike was not in the tophat position stated as factory setting #1, I changed it to setting #1, and am not sure if I will like the added clutch lever pressure increase, maybe I will get used to it. ...? Have heard that you can do 3 tophat in and 3 tophat out , for a middle ground feel. Or try as they say in the attached pdf.

    Something else I saw on the metal plates , that of the 5 plates , 2 and 4 were sleeved so that it holds the plates together, prevents them from shifting.

    Can any one give their take on the harder hitting friction discs that have the circular pads...? At what skill level would these be used/needed and or appreciated. Presently have the slower progressive pads. thx
  14. alpineboard

    alpineboard Been here awhile

    Joined:
    Mar 2, 2016
    Oddometer:
    457
    Location:
    New Hampshire
    Just thinking a bit on why the friction disc swap in the order. Could it be that the pressure plate movement from disengaged to engaged is linear and in one direction. And starts to apply this pressure one plate at a time, from the exterior first, in an inward direction.
    So you have the thin plates with big spaces which disperse the oil faster, and the thick plates with small spaces which disperse the oil slower, pad area and pressure to be thought of also. So depending on how you stack the different plates, makes a difference of how the clutch will feel as it locks up in engagement.
    Slow/soft engagement at each end with thick at outermost, Or slow/soft in the middle if you put the thickers in the middle. IMO only...?
  15. 1fxstbi

    1fxstbi Been here awhile

    Joined:
    Nov 23, 2014
    Oddometer:
    380
    Location:
    Texas, hell ya!
    That is a very interesting PDF, I've not seen anything like that for the 4t. Since I didn't see any variance on frictions or steels I suppose the only thing you could do is flip the top hat washers around and that particular suggestion is made in the manual but it doesn't give you many options for clutch tuning. It's a shame they didn't do it like the 2t. I did see a pic on the TC site where someone made a new top hat washer with an offset that would give you slightly less spring pressure. That would take some experimenting. My clutch feel seems pretty good now although I will be going to one of motobene's training classes in a few weeks so I will get him to elaborate on how it compares to his Sherco with the diaphragm clutch spring. He may have more tricks up his sleeve to make it better. Hopefully it's not "buy a Sherco, dumb ass"! :)
    EditDeleteReport
    + QuoteReply
  16. lineaway

    lineaway Long timer

    Joined:
    Oct 1, 2011
    Oddometer:
    6,663
    Location:
    nm
    You can put two 1mm washers under your primary washer, but theu have to fit inside the spring. Pretty easy to do. After the Nationals I plan on finding softer springs to make a lighter feel. Which I have to buy in bulk, so I will be posting about them.
    alpineboard likes this.
  17. lineaway

    lineaway Long timer

    Joined:
    Oct 1, 2011
    Oddometer:
    6,663
    Location:
    nm
    Too tired to keep wrenching tommorrow is ginna be busy again.

    Attached Files:

  18. alpineboard

    alpineboard Been here awhile

    Joined:
    Mar 2, 2016
    Oddometer:
    457
    Location:
    New Hampshire
    Am inspecting and re greasing the dog bones and needle bearings/bushings on the swing arm. Inspect dog bones for damage/corrosion and grease them up. And for the swing arm needles, am thinking a marine grade grease that will not break down in water, thus keeping water out in the first place. Any suggestions?
    PHOT0527.JPG It all looked pretty good in there, very slight polish wear on the needle bearings bushings on a couple spots, nothing bad at all. The axle was perfect clean, with grease and no damage at all. But definitely glad I am getting in there and doing this. All after last season of 160 hours. And also a spot where not to blast with a hose when washing.
  19. heffergm

    heffergm Long timer

    Joined:
    Sep 22, 2014
    Oddometer:
    1,169
    I just use maxima waterproof grease everywhere
    alpineboard likes this.
  20. alpineboard

    alpineboard Been here awhile

    Joined:
    Mar 2, 2016
    Oddometer:
    457
    Location:
    New Hampshire
    Got this far, might as well look at the steering column head set bearings. PHOT0528.JPG Only weighs about 60 pounds now.