I settled on Bel-Ray H1R. The primary reason is that all of the bike shops in Phoenix carry it. No special trips across town to get supplies. I'm sure that all of the modern synthetic pre-mix oils designed for racing are plenty good.
For whatever it's worth, the bolt in question is missing on my bike. I bought the bike second hand and never really looked at it before reading this thread. Everything seems just fine.
Slightly off topic, but I had a question on another board I read. Will the Rekluse auto clutch work on the Pampera? They make a model for the enduro line. Thanks.
I'm new to the Scorpa fraternity. I had a GasGas TXT280 for a short while before it got stolen. The GG had a very snappy motor that was a bit much for this old, easy line rider. I geared the GG down a bit and retarded the timing to make the motor more manageable. I really have nothing bad to say about the GG, it served me well. After it was stolen I tried a number of bikes. Had a chance to ride a Scorpa, and had a first hand experience of the smooth power of the Yamaha engine. The Scorpa is not all about the engine however, the build quality is excellent and the bike handles beautifuly. I found a used 2001 SY250 at a good price and snatched it right up. The more I ride this bike the more I like it. Everything you've read here about the smoothness of the Yamaha engine is true.
Sendero!!! Good to see your post. I remember when the movie first came out. About a dozen of us moto heads from Sedona, including my Dad, made the road trip down to the big city of Phoenix and decended onto the one and only theater in town that was playing On Any Sunday. Just this past weekend the Fuel Channel (skateboards and x sports) played it on back to back time slots. You guessed it, lazy ole Eric23 stayed out of the heat, and watched it twice. If those scenes of the Sacramento Mile and the desert race don't bring a lump to your throat, you should retire from this sport.
Not to distract you from the ignition situation, you mentioned that it ran for a while and then quit. You may also want to check out the carburator. When was it last cleaned? You may well find that the pilot jet is clogged. Don't ignore the previous posts on getting the ignition right, but also check the carb.
Unfortunately I took a 20 year hiatus so have no real experience between the Sherpa T and my SY250. Briefly had a GG 280 and rode a TY175 for a while. I bought the SY250 primarily for the motor (pleasantly surprised with the rest of the package). The Yam motor comes as close to the smooth power of the heavy flywheeled vintage bikes I grew up with. The TY engines, 80 & 175 are bulletproof, wonder if the current crop of engines will be hauling old farts over the rocks 20 years from now.
Adjusting the valve clearance will be a chore. Shim and bucket design and all. Got the same set up on my Kaw trail bike. Yamaha seems to be winning the valve system reliability war at the moment. It's a nice looking bike.
I was contemplating a gas tank project for my TY. However, I came across an article on fiberglass gas tank fabrication in a homebuilt airplane site that changed my mind. The basic jist of the article was that standard fiberglass resins do not hold up to gasoline with anti-emissions additives like ethenyl (sp?) etc. On the other hand, the fiberglass tanks for being sold for the TY's through Sammy Miller seem to hold up quite well. I'd do some thorough research on resins before starting.
Soft suspension is not necessarily bad for trials, you might hold off on that unless you're consistantly bottoming out. The flywheel and clutch mods are pretty standard. There are several TY350's around CAT, and the guys do pretty good in the morning classes. Mike at Hard Rock has lots of experience with the TY's. If you can't get the help you need locally, B&J Racing are very helpful and good folks to deal with.
AP, Did you buy the bike locally? If so, check with Mike at Hard Rock Trials. There's a good chance many of the mods mentioned in the previous posts have been done. Most of the TY350's in AZ that I've come across have been worked on. See you on AZTT for local trials news.
Ditto on HondaRS's advice. The best oil is frequently changed oil. I've seen several semi-synthetic motorcycle oils (Yamalube, Honda, Castrol) that are reasonably priced. I change the fully synthetic oil in my trail bike after every other ride. While on the subject; change the oil filter at least every other oil change.
If you go to Thumpertalk's forum you'll find numerous threads on engine oil for 4 strokes, lots of opinions out there. Most auto oils have additives that are not good for wet motorcycle clutches. Yamaha markets a semi-sythetic 4 stroke oil in the US called Yamalube. Honda also has a similar product available in their US dealerships. There are many 4 stroke riders out there using some auto oils, but MX and trail riders don't use the clutch like trials riders. I've been using a Mobil 1 fully synthetic oil in my Kawasaki trail bike, however the product has been re-formulated. The jury's still out on whether the new Mobil 1 oils will be ok for bikes. Given the frequent use of the clutch in trials riding, I'd stick to motorcycle specific products
It's really hard to say, when I bought the bike the engine was overdue for a total overhaul. Bearings, seals and con rod were all shot. I installed the reeds before having the engine rebuilt. Now that the engine has been done, it runs great. Bear in mind I ride the easy sections with the old men, but the bike has yet to come up short of power. A young expert rider in our club took the 175 for a spin on some rather difficult terrain and it handled some steep climbs just fine. Boysen enjoys an excellent reputation throughout the industry, I really don't think you can go wrong.
I'm running the Boysen reeds in my TY175 along with a 1/4" aluminum spacer. I also removed some material on the reed cage to clean up the air flow. My primary reason for the Boysen reeds was not performance related. I was very concerned about the integrity of 30 year old stainless reeds, and having one get ingested by the engine. I bought mine through B&J Racing and the fit was spot on. I can't tell you whether reeds from a TY80 would fit the 175, but the Boysen reeds have served me well.
I finally figured out the pop up blocker on the Scorpa web site. They seem to have the engine info down pretty well, but couldn't find much on the chassis. On the other hand, it's pretty basic stuff. I'll go searching around town for the NGK iridium plug.
Met up with some friends for a practice ride. I can see myself falling in love with this bike, it is really fun to ride.
Premix Oils - Which One And Why?
in General Trials Talk
Posted
I settled on Bel-Ray H1R. The primary reason is that all of the bike shops in Phoenix carry it. No special trips across town to get supplies. I'm sure that all of the modern synthetic pre-mix oils designed for racing are plenty good.