dennisgr

At multiple All Japan champion Kenichi Kuroyama's website http://www.kuroyama.jp/ there are pages about his brother Jiro's Scorpa 125. Here one about the crankcase bottom drain plug casting. http://www.kuroyama.jp/tys125f/081126.htm http://babelfish.yahoo.com/translate_url?d...5f%2f081126.htm Appearently grinding too far is a risk aswell as cracks from not having grinded it down before taking hard blows on the sump shield.

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

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.

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.

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.

Has anyone tried the new Jitsie fuel screw for Beta Rev4? I wonder if it fits the Scorpa 125's Mikuni carburetor or if the thread and tip is right so that the knob and stem can be modified to fit. http://www.trialscentral.com/forums/index....rt=#entry169599

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?

I have a Honda TL125S 1976 with bad original shocks and looking for buying a new pair. Length center to center is 360 mm. At max 400 mm the rear fork touches the frame. Upper bush is

Takumi Narita rode the 2007 Scottish Sixdays Trial wearing a full face helmet. http://www.scorpa.fr/actualites.php?actu_id=42 Looks like he often uses full face helmet. http://www.trialsnarita.com/

I bought such a CMX fuel screw. It was cheaper from Staggs, SGR-USA. 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. After some more processing for grip and turn marks and mounting. Screwing it in to the bottom produced the highest idle rpm so the tip was too different.

I thought Gonin offered 200 cc but this only mentions 163 cc. http://www.gonin-moteurs.fr/fiches/scorpa125ty-s.htm

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?

You can download the 2006-2007 part list from here: http://www.scorpa.fr/fiche_moto.php?moto_id=18 Page 28/30 shows the carb and yes there should be a spring. I assume it is for avoiding misfire when engine braking.

Thanks. Sent an email to Birkett's and expect to wait until SSDT is over. Dennis

Well, as the title says: Where can one buy a 10T front sprocket for TYS125? Preferably online web shop. Best Regards Dennis Gr