Boreal National or BUST !

Discussion in 'Trials' started by lineaway, Aug 8, 2018 at 7:51 PM.

  1. lineaway

    lineaway Long timer

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    Them Eastern rangers don't worry too much about several years of draught. Them catylitic converters will start a grass fire in no time.
    #41
  2. LowPSI

    LowPSI Been here awhile

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    HEY BOB
    [​IMG]

    THIS INFO WAS 2 CLICKS AWAY ON THE NATC HOME PAGE.

    EVENT FLYER
    http://www.mototrials.com/library/images/2018_Event_Flyers/2018_CA_National_Event_Info.pdf

    BOTTOM OF PAGE ONE
    of the event flyer. " For further information: Pat McPhetridge 916-824-6562 patrickmcphetridge@yahoo.com"



    if you had any doubts about your brand of Spark Arrestor you could have emailed or called.

    You are not helping anyone by casting doubt onto this event.

    IMO ...This will be the BEST National of the year. World Class location. Organized by one of the best clubs in the country.

    Spanish Fly spark arrestors are ok to use.
    #42
  3. 2whlrcr

    2whlrcr gooligan

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    Guess you have to go now, better load the truck back up.
    #43
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  4. motobene

    motobene Motoing for 46 years

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    Thank you laser17! The screen idea comes from locomotives. The .023" makes more sense. CA's addition of .0002" must be a Nanny-digit error. At least it's bigger... by 15% of a human hair diameter!

    Also note the OR pulverize part. HOW glowing carbon flakes and balls are pulverized I suppose is up to whoever in USFS approves a particular exhaust, and that may not involve a screen. I have seen these helical turbo-like things in some exhausts. They don't move, but perhaps they are for having particles collide into walls to bust them up?

    I hope all of you curmudgeon and non-curmudgeon riders load up and go!

    I'm not, though I wanted and tried planning to, but the wife said no. She did not consider rolling yet another trial into our 40th wedding anniversary trip, which only could be then. All that work and expense and risk to self with injury crash now won't pay off with a potential Senior 60 podium third or whatever. Knocked right off I will be and I won't get to experience a CA event in a new venue:hung
    #44
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  5. Gordy

    Gordy Team Listo

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    Thread title change to Boreal or Bust?
    #45
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  6. Norman Foley

    Norman Foley Devotee of the Husqvarna

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    Krizman Spark arrestor...
    https://patents.google.com/patent/US3407575
    [​IMG]
    #46
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  7. Ymirtrials

    Ymirtrials Been here awhile

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    I’m going! C’mon Sponge Bob...





    :hide
    #47
  8. sdm

    sdm Adventurer

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    I was going to chime in on this but Norman beat me to it. You don't have to have a " screen" to have a legal spark arrestor. The turbine core type is also legal as (as long as it is stamped approved US Forest Service Spark arrestor ) and better for 2 strokes anyway imo. There are various manufacturers that provide those like FMF and Krizman. I have been running a FMF on my Montesa for years with no ill effect and very little maintenance. You do have to clean them occasionally to make sure they aren't clogged but that is simple maintenance.
    #48
  9. motomofo

    motomofo Been here awhile

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    Screen type spark arrestors are the WORST for a two stroke. A buddy of mine put a Krizman type in his trials bike a few years back (also riveted on the proper tag with USFS approval and #) and some knucklehead checking SAs at an unnamed event didn’t want to approve it because there wasn’t a screen on the end, even though it clearly passed the stick test. :dunno
    #49
  10. motobene

    motobene Motoing for 46 years

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    Yes Norman! The Krizman helix spark arrestor thing! Saw those in `70s so called "Enduro" bikes.

    Can't believe I forgot the name. Then again, my brain is 12 years older than the Krizman patent:gerg
    #50
  11. lineaway

    lineaway Long timer

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    I am waiting for a formal Team New Mexico anouncement. Mean while while you guys are sitting around doing nothing I have been out getting 20 sections at Sipapu. Time for a beer!
    #51
  12. Hoss Cartright

    Hoss Cartright Been here awhile

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    "ANSWER TURBINE CORE" was the least restrictive one I used.

    A photo group of my piles of 1990s spark arrestor experiments. (Is there a statute of limitations on admitted tampering? Never mind, I'm not telling. Don't want to end-up in Leavenworth with the mattress tag removers and catalytic converter bypassers)

    1998 UTE cup stuff
    UTE_CUP_1998_01.jpg

    DSC02401.JPG

    DSC02402.JPG

    DSC02403.JPG
    #52
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  13. Hoss Cartright

    Hoss Cartright Been here awhile

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    earlier in the 1990s

    Answer turbine core
    DSC02406.JPG

    Sparky Cobra
    DSC02404.JPG

    DSC02405.JPG

    Very early 1990s ~ had to hose with oven cleaner in the paddock after every loop to return performance. If a dusty Trial, then they clogged even worse until the bike would barely run. And yes, the oven cleaner dripped onto the ground.. Then I figured-out how to make these less restrictive, the rest of the details I take to the grave. (or Leavenworth) - And they often rattled apart and everything was lost on the trail somewhere..
    DSC02407.JPG
    #53
  14. heffergm

    heffergm Long timer

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    "And they often rattled apart and everything was lost on the trail somewhere."

    That sounds like the secret sauce :)
    #54
    10K likes this.
  15. lineaway

    lineaway Long timer

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    Actually it is the plastic tip mufflers melt withe metal S/A on the end.
    #55
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  16. LowPSI

    LowPSI Been here awhile

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    [QUOTE In fact I have complained about how terrible the National website is for about 18 months. [/QUOTE]

    18 months !!!

    Hey Bob, send me a list of your complaints and I'll make sure the NATC webmaster gets it. If it's anything like this Spark Arrestor thing .......it should be interesting reading.
    #56
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  17. 10K

    10K Trail Runner

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    :lurk
    #57
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  18. Hoss Cartright

    Hoss Cartright Been here awhile

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    yep. They melt down with spark arrestors installed. I've now sold almost 300 of these to GG peeps in the USA.
    GG_SILENCER_CAP.JPG

    GG_SILENCER_CAP_3.JPG

    GG_SILENCER_CAP_5.JPG

    GG_SILENCER_CAP_1.JPG
    #58
  19. LowPSI

    LowPSI Been here awhile

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    The Montesa exhaust tip is made so that the Spanish Fly (hate that name) fits right on and stays on. On the 4RT it stays cleans. I clean mine once a year, if that.

    Attached Files:

    #59
  20. lineaway

    lineaway Long timer

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    18 months !!!

    Hey Bob, send me a list of your complaints and I'll make sure the NATC webmaster gets it. If it's anything like this Spark Arrestor thing .......it should be interesting reading.[/QUOTE]
    The problem is the contact system does not WORK. You want another complaint to answer. Why does someone that dnf"s in a National still gets full points, just like they finished? Or is this just the good feel of gettig credit for failure?
    #60