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dennisgr

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  2. Origin Of Scorpa 125

    in Scorpa

    Posted

    In the recent Section 13 YOU HAVE USED WORDS OR A PHRASE WHICH ARE NOT PERMITTED ON THIS WEBSITE. PLEASE DELETE YOUR POST/TOPIC. DO NOT TRY TO CIRCUMVENT THE FILTERS IN PLACE ON THIS WEBSITE there is an article about the Ihatove Trial in Japan by Yasuo Manzawa.

    In 1973 and 74 Yasuo Manzawa and Shozo Narita participated in the Scottish Six Days Trial on Honda TL125 machines and by inspiration they started the Ihatove Trial in 1977.

    I read with special interest the section about the origin of the Scorpa 125.

    It was the chief development rider of Yamaha, Haruo Kimura, All japan champion in 1973 who in 2000 showed up at Ihatove with his own development trials bike which later became the base for the Scorpa TYS125F.

    Some pictures of the 2000 prototype:

    http://ty125f.gooside.com/debyualbum.htm

    And with Babel fish translation:

    http://babelfish.yahoo.com/translate_url?d...fdebyualbum.htm

    After developing it further with the cooperation of Scorpa it was shown at the Ihatove trial 2002. Kimura did not ride it himself but miss Okamoto working at the same place made the two day trial over 350 km.

    Miss Okamoto with the 2002 prototype and also Kimura and the 2000 prototype can be seen in the pictures in this frame broken out separatly from http://www.sukaheru.net/~ihatove/:

    http://www.sukaheru.net/~ihatove/ns_rule/ns_rule04.html

    And with Babel fish translation:

    http://babelfish.yahoo.com/translate_url?d...fns_rule04.html

    Published to the natural mountain communication 2002 November edition

  3. Difference Between Racing - Long Ride

    in Scorpa

    Posted

    I have a 2006 Scorpa TY-S125F Long Ride.

    There was three different models.

    - TY-S125F Long Ride

    - TY-S125F

    - SY125F

    The Long Ride differs compared to the ordinary TY-S.

    - Front fork tubes are extended 40 mm by screw in extenders for improved stability on road. No air vents.

    - Fuel tank is 5 liter instead of 2.9.

    - Seat is longer 530 mm instead of 450.

    - Different foot rests.

    - Reinforced side stand.

    - Protection flap for shock absorber.

    The racing model is different in many parts being lighter and competition oriented.

    - No seat.

    - Front forks. Recognisable by having three pinch bolts on axle.

    - Fork yokes. Recognisable by having three pinch bolts on lower yoke.

    - Handlebar without "bird pin". Large diameter?

    - Front wheel, including brake disc and four pistong caliper instead of two.

    - Rear wheel and brake disc. Tubeless.

    - Air cleaner filter is single instead of double and top air inlet has a bigger hole.

    - Different engine guard plate with 10 mm pad instead of 5.

    - Frame different but same weight.

    - Rear fender.

    - Different tail light.

    - Stickers.

    - No rear view mirrors.

    - Hydraulic clutch.

    - Foot rests.

    - No speedometer or steering lock.

    - Different head light.

    - No direction indicators or horn.

    - Main jet 105 instead of 100.

    How much of this is true for later years I don't know.

  4. 175 Four Stroke, Forks And Gearing

    in Scorpa

    Posted

    I imported my Scorpa TY-S 125F Long Ride 2006 new from Joa Hindren, 12 times Finnish trials champion and importer of Scorpa. He adviced Castrol Fork Oil 5W between 320 and 350 ml in each leg. I also downloaded "TY-S125F - SY125F PARTS LIST & USER MANUAL 2004-1.pdf" from the Japanese importer Alpes Vent. I don't understand Japanese but for TYS125F it mentions 140mm and 300cc and for SY125F 60-70mm, 130-150mm and 330cc. Left and right fork legs are different on the racing models.

  5. Carburetor Fuel Screw For Beta Rev4

    in Beta

    Posted · Edited by DennisGr

    I am sure it isn't have the same carburetor but they are both Mikuni and it might have the same thread and the same tip on the fuels screw so that I could use it after modifying. If you follow the link there are pictures of the Scorpa 125 original and a CMX fuel screw next to a ruler with millimeter scale. I modified the CMX fuel screw to fit. The thread M6x0.5 was right but the tip was too different so the adjustments range was not right. So what I wonder now is if the Beta Rev4 fuel screw is a better candidate for modifying or not. From the not so good pictures I have seen of it it seems too short so would have to lengthen the stem. Just as long as the thread and tip is right it should be doable.

  7. Honda Tl125 Shocks

    in Honda

    Posted

    Thanks for the input. 390 mm = 15.35" so sounds reasonable for steering behaviour.

    Does anyone have an idea of the damping characteristics to expect from NJB or Betor shocks? Classic or more modern less damped?

    What is the rod diameter on the Falcon shocks?

  10. Do You Think This Fuel Screw Fits Scorpa 125f Carb?

    in Scorpa

    Posted · Edited by DennisGr

    I bought such a CMX fuel screw. It was cheaper from Staggs, SGR-USA.

    CMX-1.jpg

    The thread was right M6x0.5, the tip a bit different.

    But the head didn't fit beside the float bowl so I turned it down a bit on a lathe.

    CMX-2.jpg

    CMX-3.jpg

    After some more processing for grip and turn marks and mounting.

    CMX-4.jpg

    Screwing it in to the bottom produced the highest idle rpm so the tip was too different.

  12. Do You Think This Fuel Screw Fits Scorpa 125f Carb?

    in Scorpa

    Posted

    The Scorpa 125F has a very hard to get at fuel screw. Guess what, I never adjusted it. I have been looking for a long time for a fuel screw that you can adjust without tools. Jitsi has a screw for Mikuni carbs but I think it is an air screw only for twostroke carbs. In an ad for fiddy parts I saw this fuel screw for Mikuni 22 mm fourstroke carbs:

    http://www.workzparts.com/default.asp?c=se...&query=1695

    Do you think it fits the Scorpa 125F Mikuni 20 mm carb?

  
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