2017 Sherco Factory 125

Discussion in 'Trials' started by motobene, Apr 14, 2017.

  1. motobene

    motobene Motoing for 46 years

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    Hmm. My 250 took longer to get sweet. Yeah a year is overstatement. I think I'm just missing my favorite trials bike ever.
    #21
  2. 2whlrcr

    2whlrcr gooligan

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    No that's about right for me...15 hrs a year.
    #22
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  3. heffergm

    heffergm Long timer

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    That's not much of a season. On the plus side, your bikes should last you decades.
    #23
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  4. 2whlrcr

    2whlrcr gooligan

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    No, my practice area is rocky.
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  5. heffergm

    heffergm Long timer

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    Erm, ok... I can't tell if you're serious, so I'll leave it alone. My current GG has 130 hours on... essentially all of them involving rocks :)
    #25
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  6. 2whlrcr

    2whlrcr gooligan

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    I have too many hobbies and have to spread the love around.
    #26
  7. motobene

    motobene Motoing for 46 years

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    Too many interests, but only one body with a countdown clock. I know this problem well!
    #27
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  8. Norman Foley

    Norman Foley Devotee of the Husqvarna

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    I'm going to try the 55 pilot, 120 main in my '17 Scorpa 125SC and report back.
    #28
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  9. motobene

    motobene Motoing for 46 years

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    Awesome!

    My values are for objective reviews. If I'm right, great. If not, call me on it. You'll get no snowflake melt downs from me :-)

    Action-reaction will factor in. Jetting is a function if how you load the engine. Keep in mind during the eval that better and more advance technique is to push the rpm rise with the throttle, rather than have the throttle trail the rise in rpm. My jetting recommendations are within that context.

    It's how I ride, and I can't count the number of times over the years that people have commented on how good whatever bike I'm riding runs. "It's the rider," I'll joke, and by understanding action-reaction, there is truth in the humor.
    #29
  10. Norman Foley

    Norman Foley Devotee of the Husqvarna

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    I just installed MJ 120 and PJ 55, with AS 1 1/2 turns out. 1100 ASF and 67F at home. I rode it in a couple of my sections and a run in the field through the gears. What I thought was excellent with the stock jetting.... was just very good. With your jetting, the bike is now excellent... cleaner off idle and can rev out further and smoother in each gear.

    Thank you!
    #30
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  11. 2whlrcr

    2whlrcr gooligan

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    I work the body hard, so I hope my clock is running backwards, or at least slow.
    #31
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  12. 2whlrcr

    2whlrcr gooligan

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    I rode with the Littlefield's today and dad was on a new Sherco Factory 250 and junior was riding a new Sherco 125. I could have rode both, but didn't think about asking. Both bikes seem to run really well.
    #32
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  13. Norman Foley

    Norman Foley Devotee of the Husqvarna

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    Be happy with slow!
    #33
  14. motobene

    motobene Motoing for 46 years

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    Norman, thanks for trusting me enough to try my recommendation instead of just listening to me babble. Awesome that you had a positive result!

    On the better end of "crying shame" are bikes like yours that work good but could work better.

    One step further would be to see what happens when the Boyesen CarbonTech reeds are put in the 125. I think the125 takes the same CTT 132 reeds as the bigger bikes. The reeds might change what jets the bike 'asks for.'

    I have a set I was saving for the coming 250. The 125 doesn't have the dirty-off-bottom problem my 250 had, but I need to throw them in the 125 today to see if their addition takes things in a positive or negative or neutral direction.

    My only objection to the 125 is the power flattens out on top. That's from being a non-power-valve engine with porting biased for low-end grunt (correctly). Will the reeds help any with that?

    We shall see.
    #34
  15. Norman Foley

    Norman Foley Devotee of the Husqvarna

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    Look forward to your reed test. The Tryals Shops is a development partner with Boyesen and I asked Mike if they would be a good addition to my 125, as a friend was getting them in his new '17 Scorpa 250SC. Mike didn't recommend them for the 125, but did for the 250/300.
    #35
  16. motobene

    motobene Motoing for 46 years

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    That's interesting because I don't think the 125 needs the reeds either. Still, it'd be interesting to see if they have any effect and what that would be.

    The 125s, being identical in everything but ignition, crank, and top end to the bigger models have massive over capacity in carb and pipe and air filtration and reeds....
    #36
  17. motobene

    motobene Motoing for 46 years

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    Rode a few hours today. A storm was approaching, lowering air pressure and increasing humidity. The idle dropped a bit (because the mixture got into the rich end of stoichiometric). I opened the air screw a half turn to 2 turns out. The idle came back up.

    I noticed also that the ignition map switch was set to cloudy. I put it on sunny. The power then didn't flatten out as much on top, so blasting up stuff became easier. The switch will stay there.

    I had fun railing a hill with dip at top to jump over. A big slip of the clutch 4th gear for a nice fly-over at the top. Very impressive, this 125 engine!
    #37
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  18. motobene

    motobene Motoing for 46 years

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    Had to put all clickers to zero today and suspension at 80 degrees is still a little slow. The Tech forks loosen up faster than the Ohlins shock.

    The Ohlins shock is biased on the over-damped side for my riding style and age. When I grouse about that to Pat Smage, he says that's what he likes about the Ohlins!

    Yes, age is a significant variable regarding preferences. I was pondering during some repositioning hops how age generally reduces the ability to hold pressure and impulse-load the bike. There are days when a good umph just hurts too much, or a Mr. Burns baseball toss syndrome sets in :-0
    #38
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  19. Norman Foley

    Norman Foley Devotee of the Husqvarna

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    I rode today 80F and humid. I did a lot of steep off camber, up and down stuff. With the 55 PJ the bike was kind of fluffy down low and fussy starting when warm. I had set the AS at 1 1/2 the other day and put it at 2 today. It didn't come right until the AS was 2 1/2 turns out. This isn't going to leave much adjustment for when it gets in the 90's and humid.

    Should I drill out my extra 50 PJ and try and make a custom 52.5 PJ to try or just run a 50 PJ when it gets consistently warmer?
    #39
  20. lineaway

    lineaway Long timer

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    At your elevation I would put a 50 in if you have it and if that does not work order the correct 52 to make it work. Riding styles also play into jetting on the smaller bikes. Atmospheric pressure does too.
    #40
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