dgshannon

Yes, you will need to adjust the air screw. As a starting place, screw it in all the way, and back it off 2.5 turns. Make sure your engine is nice and warm, and then set your idle up higher than normal. Now, you have to use your hearing, and slowly adjust your air screw. You should find a sweet spot, where you hear the idle increase. Turning the screw in, and out, you should find a place (on both sides of the sweet spot) where the idle speed starts falling off again. Once you find this high, and low spot, set the screw at the mid-point between them. Provided your jetting is correct, and needle position is correct, this setting should allow you to snap open the throttle with a fairly clean response. Don't expect a 4-stroke to act exactly like a 2-stroke when doing this. You have a lot more rotating mass there to accelerate, and half as many firing strokes to accelerate it.

I would think so. The Rotax motor was around for awhile. You can double check with Mike, at the TryalsShop (www.tryalsshop.com) to be sure.

Given the color, it should be a 1996 or 1997, the model just prior to the "Easy". Value depends on the condition, and how bad you want it!

So delerious that he only "thought" that he stayed on the curb!

With a 5th place finish on Sunday, Kenichi was right there with the big boys! He is obviously not having any problem riding the new 4-stroke at a World Class level.

Rick, I have owned a 2002, 2003 & 2004 SY250, in succession. Each year brought improvments, with the most of them being in the continued refinement of the engine and exhaust tuning. Each year seemed to rev out a little higher, with power being delivered across a wider range of RPM. With the later models, the lighter flywheel option also came into play. As you have determined, the LongRide kit makes a great option. With the easily variable ignition timing, flywheel weight options, fast/slow throttle, etc. you can pretty much set the Scorpa up to your riding preferences.

Yes. You can see it here: http://www.scorpa-usa.com/ScorpaUSA/SY250F...e/SY250F-LR.htm

Glad to hear the positive feedback, as I am impatiently awaiting the arrival of my SY250F, here in the US. After have 3 SY250 2-strokes, in succession, I went to the SY175F last year. Having grown up on 4-strokes, I loved it. I was amazed at how well the little motor would pull me around. The 175 was a bear to warm up as well. It improved once you change out the "too lean" pilot jet, but still to forever. Surprisingly, cooling down while walking the sections was not a problem. Even if the engine cooled enough that you had to choke it again to start it, you could just immedialy turn off the choke and ride it cleanly. Just something about that ice cold engine that made it tough to bring to life. I am so looking forward to the SY250F finally getting here.

My thoughts exactly, as that is what I have done on each of my Scorpa. In, fact I just undo the headlight, and leave the taillight connected. Then, when ready to sell the bike, I pull of my number plate, and plug the headlight back in. Ready for the next guy!

Growing up riding mostly 4-strokes, I love that deep throaty bark! It does not have to be loud, and I hope the 4-stroke trials bike trend does not go that way. Honda can (did) make them quiet, but the restrictors can be removed. But, since you don't ride trials anymore, you won't have to listen to them! I am anxiously awaiting my new SY250F, and am curious to see how the dual exhaust outlet sounds in person. Nice to see the new Scorpa staying in the top 25, at the SSDT. In 21st, as of Friday.

Agreed. Don't know why a Montesa 250F could do WTC sections, and a Scorpa 250F couldn't. Especially with the 5-Valve head, letting it breath and rev to the moon.

Did the "dog" seem to like it alright?

And on what exactly do you base this opinion? In 2004, Freixa finished 5th overall. In 2005, Frexia finished 6th overall. In 2006, Frexia is 7th, after two rounds on a Scorpa. Are you suggesting that we should have seen a dramatic down turn in Freixa's performance this year, simply because he was on a Scorpa? Or, that Dougie and Fuji would likewise see a down turn in their performance? If there is a pattern in the results, it would appear to be a rider sliding slowly down the ladder of success. Expecting him to "podium" on any brand of bike is probably not a realistic expectation. In 2004, Blazusiak finished 11th overall. In 2005, Blazusiak finished 11th overall. In 2006, Blazusiak is 8th, after two rounds on a Scorpa. The sub-par bike = sub-par performance, theory doesn't appear to gain any support from Tad's performance so far either. And, I would imagine that Dougie and Fuji's skills are such that any brand they were on would be adequate to support podium results!

Were you looking for "Arm Pit"!

Being in Tennessee, it would be tough for you to be any closer to a major source of knowledge on creating a performance TY engine. Contact Bob Ginder at B&J Racing http://www.bjracing.com/ and he will certianly be able to help you out. - Darrell

I once knew a girl like that.

Forget the 50, 60 or 62.5:1, as it is overkill. Get yourself some fresh, quality, fuel and a good synthetic oil. I am sure that the Castrol is fine, but as with dfwilson, all my experience has been with Motul. I have owned 3 different SY250, and run each of them at 80:1 using Motul. For fuel, I would mix premium pump gas, with 114 octane racing fuel, at a 50:50 ratio. Mixing in racing fuel is not a necessity, but the increased octane does help prevent knock. Prior to the Scorpas, I had two different Montesa, and a Beta. In these I ran Silkolene, but also at 80:1. With quality synthetic oil, you just don't need the high oil content you have been suggesting. Remember, that as you take oil content out of the mix, you are adding fuel in to replace it. This alone makes the the mixture more rich. Don't start moving the carb needle to a richer setting, until you have fresh fuel and a proper premix ratio.

That is the choke lever, not a decompression.

Absolutely not. A TY80 will pull smooth and strong, right off idle. It is in all ways, a real trials engine, and should run as such.

Any "Amercian" website you may have seen wouldn't know the price, because the US and South American Distributor doesn't know yet. If you want the specs we do have, you can see them here: http://www.scorpa-usa.com/ScorpaUSA/SY250F/SY250F.htm Making unfounded statements (such as new bike prices) is always a bad plan, as there is always some goofball somewhere who picks it up, and starts spreading it around as fact.

I laughed outloud reading that line from you, like them guys are going to ride that? you nuts? <{POST_SNAPBACK}> Taddy, Freixa and Kuroyama will all three be riding "that" this year. They are signed on with the Scorpa factory, to do so.

The LongRide body is available as an option. It will bolt right onto the standard SY250, so you can have the racing components, along with the larger fuel tank and seat. http://www.tryalsshop.com/detail.asp?PRODUCT_ID=K06

The feel of the clutch on the 125/175 can be DRAMATICALLY improved with a clutch kit that is available from B & J Racing, in Tennessee. Link: http://www.bjracing.com/ (You won't find it on their website at the moment, but you can get the contact information. The kit includes new metal discs, with a different machining on the surface, and new clutch plates with a different friction material and pattern. These change the way the oil is captured between the discs and plates. Also, since the clutch is running in the engine oil, picking up combustion deposits etc., the feel of the clutch is VERY MUCH effected by the age and condition of the oil. I find that frequent oil changes keep the clutch working at it's best.

Not exactly... The author of the article relates that one of the other riders at the test considered it a "girls bike", as it relates to being perfect for his wife. The author then responds the he is not a girl, and still loves the bike. Even so, not the most flattering way to attract riders not fitting into the beginner, or female, category. However, the photos of the Scorpa factory rider, running the SY175F through it's paces on the Moab rocks, does a good job presenting the bike as a capable performer.