dgshannon

Since he is not searching for a KTM mini, or a Beta Enduro, how is there any common thread? He is looking for a good trials bike, and potentially one with an option for a seat.

Why do you believe they should not all be removed? <{POST_SNAPBACK}> DG They just get too noisey with no noticable power gain. Personally I think leave them all in but make sure you do the rejetting, that makes heaps of difference! Downunder <{POST_SNAPBACK}> I was just curious as to the source of all this wisdom. Mostly because there are four rods in the silencer, instead of the three referenced!!! Just get a kick out of all the info that get passed on to others, that is not based upon personal experience. I removed all four rods from mine (along with the jetting modes) over a year ago. Performance is outstanding, and the noise level is far less than my riding buddies Montesa 4RT, with the restrictors still in. Not taking them all out may be better, but I have no experience with that setup. I sure would not advise someone to open their silencer back up, and add rods back, after they had already removed them! Just as an FYI, I HIGHLY recommend the clutch kit (disc & plates) that is available from B&J Racing (www.bjracing.com). Making that mod was by far the best thing I have done to the bike.

Sure will hurt when the change comes, and the other guys already have 2 and 3 years experience, with the 4 stroke, under their belt.

Why do you believe they should not all be removed?

Contact B&J Racing Link: http://www.bjracing.com/ The have both the 143cc and 160cc kits. They will sell you the parts, as well as do the installation if you wish. They also sell a clutch kit (different plates and discs) that makes the SY175F perform like a champ. In the review of the 175, you will note that the clutch was my main concern. After installing the B&J kit, that is no longer the case!

The Scorpa LongRide, or SY with kit installed, would be perfect for your needs. Don't overlook the SY175F, with the seat installed. It is an amazing bike, and adding the seat would be less expensive than adding a LongRide kit to the SY250. I have owned a '02, '03 & '04 SY250, and am now riding an '05 SY175F. From your description of what you will be doing with the bike, the Scorpa would be an excellent choice.

Consider the opportunities other than those that come while you are riding. For example, when you are waiting your turn at a section. Typically, riders will sit on their bike while waiting, and often get their pants in closer proximity to the head pipe then, than when they are riding. This is how I was burning my pants on another model. Took me awhile to figure out how I was doing it.

Have you tried the Tryals Shop? http://www.tryalsshop.com

I'm sure that the mods would make for a great bike, but there is more to it than that. The carb, cam, ignition, clutch, exhaust, ??? are all different from the TTR engine. I am currently riding an SY175F, and have also imagined the engine mounted in a TTR 125 chassis! What a neat trail/play bike that would make.

Judging by their other products, odds are that it is a 50cc bike. The cable clutch would make sense, if they are using the same base engine as their other bikes.

The bike you are speaking of is the Scorpa "T-Ride". Currently a concept bike, but late 2006 availablity is what the factory is hinting at. Link: http://www.scorpa.fr/commun/actualites_img/tride_1.jpg

Andy, Go to the "Wayback Machine" (http://www.archive.org/web/web.php) and you can view copies of old websites. The first record of your site was from 1999.

LMS - Fully extended, the fork tube measure 23.5 inches from axle center to top cap. The fork legs measure 1 inch across. Kevin - What do you have in the way of parts?

In your support of 2-Strokes, a couple of the positives on 4-Strokes get pointed out: "spin is directly related to throttle control" - True, and the 2-Stroke is much more sensative to this truth. By only firing on every other stroke, the 4-Stroke makes this truth, less true. The side effect is that the 4-stroke bike can be ridden as successfully as a 2-Stroke bike, with less throttle control. "I doubt that the result of spin or grip could not be adjusted by detuning the 2t" - True, but the result is a "detuned" 2-Stroke. The grip and enhanced spin control is a natural side effect of the 4-stroke engine's low end performance and grunt, without a compromise to the mid range & top end being necessary. The problem with the 4-Stroke trials bike is that VERY few people like their first ride experience, (or second ride, or third ride...). The characteristics of the bikes are SO different from a 2-Stroke, that a rider basically has to ride one long enough to start un-learning their 2-Stroke skills, and replace them with new 4-Stroke skills. If you are just sampling bikes, to see how you like 4-Strokes, the odds are pretty slim that it will be a positive experience. I chuckle at the number of test riders that get off my bike and say, "Thats really neat, I like it", when you know they didn't! They are just WAY different from a 2-Stroke, and until you invest some meaningful time in learning to ride one, you miss the advantages that it can bring to the party. The second consideration then becomes whether those advantages are applicable, or useful, for the area and type of terrain that you ride. Where we are, in far south Texas, most of the stuff we ride is off camber, tight, traction limited (either too wet, or too dry), etc. so the 4-Stroke really shines. Someone who hops and bops through the rocks, leaping giant ledges with a single bound, may not appreciate or benefit from the 4-Stroke characteristics.

Finally got out to the sections for some practice time this past Saturday. I have to say that the B&J clutch kit is AWESOME!!! The difference between the stock clutch is like night and day. The overall range of engagement is still a little narrow, but within that range, the clutch engagement is very progressive now, with great feedback to the rider. If you have the SY125F or SY175F, then I HIGHLY recommend that you make this modification to your bike.

Why?

I am finding everyone's theories about a bike that they have probably never ridden, very funny. Like Vinnie, I too own a 175 that I find to be an amazing bike. After riding it unmodified for a period, I them removed all of the baffles from the silencer, and made the pilot jet change. While the tone of the exhaust changed, the sound level only barely increased. Still quieter, and less of a bark, than my ridding buddies Montesa 4RT with all of it's restrictors still in place. And yes, it made a noticable improvement in the bikes performance. The pilot jet change helped with cold start and warm up time. It also smoothed out the idle and low RPM, because the stock jet is way too lean. I weigh 235 pounds, and the bike will pull me around without problem. Everytime I climb a large hill with it, I just cannot believe that the engine is only 143cc. It's smooth tractable power makes snaking through tight, off-camber, stuff a breeze. My only complaint is the clutch. Even with the Magura hydraulic unit, the feel is very un-progressive. The lever is like a lightswitch, and takes extreme clutch control to use effectively. Fortunately, a 4-stroke needs less clutch use when ridding. I have just fitted the aftermarket clutch plate and disc kit available from B&J Racing (http://www.bjracing.com/), but have not had the bike out in the sections yet. In the driveway, it feels MUCH improved, but we will have to wait and see. B&J racing have done a great deal of testing on this engine, created some great aftermarket parts, and are continuing to push the envelope of performance on the bike.

Can you not get the SY175F down under? It has all of the same high end components as the 2-stroke. I very much like mine, and had three SY250 prior to getting it.

Try bypassing their splash page, and going directly into the site. It will look a little funny at full screen, but at least you can see it. Link: http://www.scorpa.fr/english/default.html

I count 4 Mizell's...

The exhaust certainly draws your attention, and looks pretty cool tucked up in there with the twin outlets. After waiting so long to see what they would come up with, I am very pleased with the new look. Different, but still uniquely Scorpa and their different approach to design. Very anxious to see it in the final design, with all the proper graphics and stickers in place. Given the "SRT" cut into the skidplate, and molded into lower sides of the fuel tank, I would not be surprised if the SY250F sticker and name are just temporary until all of the "SRT" graphics are complete.

Not exactly, as the WR has the electric start, on the other side. Scorpa stated awhile back that the bottom end was from the YZ250F, as opposed to the WR250F.

What do you think they have been doing by actually riding it in competition?

Leads you to conclude that the engine (transmission) did not start life intended for a trials bike! Won't somebody please make a modern kids trial bike that is at least as good as an old TY80. Better yet, just start making the TY80 again!