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jse

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  1. I just drained the oil in my JTX 1997.

    funny thing is cant find where to pour the 650cc back in. Am I being stupid here or what?

    Nope. This is a normal question for these bikes. Most had an aluminum plug near the kickstart on the sidecase,

    6mm Allen socket, and it takes some time to fill the case. Its sometimes easier to lay the bike on it's side, take

    the clutch cover off and slowly pour the oil on the clutch pressure plate.

    The small 3mm buttonhead Allen screws that hold the clutch cover on will probably be stripped out, but you can use a T-15

    Torx bit as an extractor (tap it in and use a little pressure on the rachet head when backing them out, like you would with a

    regular easyout bit) and install them back in with the Torx. The 6mm plug will also probably be stripped, use a T-45 Torx on that one.

    Cheers.

    Jon

  2. 93-94 its a Gas Gas thats what I wanted so I can't complain about that. As I said it fires on the first kick which is better than my Husky. Can I bother you by asking where the tranny oil fill/level check is at. I see a chrome plug that looks to have been stripped on the kick lever side, is that it?

    I was going to post some pic but just couldn't get anything to post.

    Hi again, Michael. I sent you some e-mails and we'll get back to each other when I get back home.

    The aluminum plug is undoubtedly the filler plug and they get stripped out easily when an old Allen wrench,

    with worn down flutes is used.

    Take a T-45 Torx bit and tap it in the hole to use as an "Easyout" type tool. You can re-install it with the same bit.

    If you buy a new top filler plug, get the one for the bottom of the crankcase with the magnet in it. That way you'll have two

    magnets (the normal magnet-type on the bottom and a magnet at the top) to collect the normal swarf that is cast off

    from gears and clutches.

    Jon

  3. The problem with the GG manual is that it says to use 550ml of tranny fluid....Later in the manual it tells you to fill by the sight glass indicator. Hence all the questions regarding this matter.

    Yea, I've found that a curiosity too. I have an 02' 280 with the Magnesium engine and sidecover and it takes 350cc's. The redesigned 03' on up sidecover takes a little more, but generally in the 400/450 range. I would think that 550cc's would result in a lot puking out the trans vent. I usually recommend 400 and change often. I like to use a level that just tops the window on the sidecover (you can see a small bubble at the top of the window) and have real good luck with the GM fluid.

    "i was told to ONLY use 380cc atf-f. then someone said 600 and the spec book says 400. totally confused." The "600" is for the "Edition" (early) engine and is actually a little low as 650/700cc's seems to be a better volume.

    ATF works well in Trials transmissions as it's design parameters are right in line with a Trals transmission. In the testing we've done, Dexron or GM AuroTrac transfercase fluid works well in the 02-05 Pros and Type-F ATF, with a little better heat tolerance works well in the newer engines with the thinner clutch spring. You could actually run any of those fluids in the transmission depending on the clutch action you want. The key is to change the trans fluid often to keep it fresh.

    Jon

  4. wow, you all have been so helpful. i am still a littel confused but i think i will go with pump gas (highest octane avail, 97) and go 80:1 and get ATF-F tran fluid. Will start with 380 cc.

    bike arrives on tuesday. i am so stoked i can barely sleep. i hope its all i expect it to be and more. really looking to use it for TRAILS riding as that is what my crew does. however, the trails have some nice technical sectoins that should be a blast with this bike.

    any other good info for a total newb to trials bikes?

    thanks

    http://www.trialspartsusa.com/tech.html is a good source for downloads and I think you can download an owner's manual that will give you good info. As it's a used bike, it's safe, and best, to assume the previous owner has not done any maintenance, so you'll want to start from the front and move through the bike to the back. Check all fasteners, inspect and lube any bearing found, replace all fluids and generally check for any worn parts that will need replacing soon. An hour invested at this will save you many hours in the future.

    97 octane should be fine, as well as 80:1 premix ratio.

    Jon

  5. Wow that is amazing. Never seen one like that before where you can actually vary the compression.

    If they made it for the popular motocross bikes they would be onto a winner. Ideal for enduros or H&H.

    The chamber inserts have been around for some time now and have just filtered down to Trials. Very handy

    for a rider who wants more compression now and then, such as us flatlanders who want to ride the Ute Cup in Colorado, up

    at 12,000 ft+ altitude. I first saw them years ago for the 350 Yamaha Banshee Quads, a really neat invention.

    I've seen some research into a variable 2S compression head that uses Nitrogen pressure to vary the height of the chamber

    while the engine is running. It's adjustable according to how high the pressure is behind the chamber (it used a Schrader valve

    in the head). That way you would have high compression for low-end snap and the ratio would reduce for high-RPM, according

    to the Nitrogen pressure installed. High compression is a problem at high RPMs for two-strokes for a number of reasons.

    Jon

  6. When I replaced my rear sprocket I needed to release 2 or 3 spokes (push in the nipple) to be able to put a ring spanner over the very tight nuts.

    After this operation I noticed I have a slow leaking rear tyre, flat afer a week.

    I had the tyre of the rim to check the rubber rim tape.

    In the Sherco tyre manual I found some instruction on how to the put the rim band on. It need to go under the lips right and left. But I found that on the GG 2007 Raga that the rim band is sort of glued on. Or maybe it is vulcanised rubber or so? I don't recall seeing any lips that hold the rim band. I'm not able to remove unless "braking the glue".

    Is that correct? Does GG rims (2007) not use lips to hold the rim band?

    How do I cure the leaking then? Buy a new rim band from GG?

    I'm not aware of lips for the band. You might try putting about 30 psi in the tire and that may help re-set the adhesive. When I'm not riding my bike I put 30 psi in the tires for storage. After a wet Trial, it squeezes the water from the bead/rim area and helps keep the rim band sealed tight. I've had no leakage problems in my 02' Pro in 8 years.

    Jon

  7. What is a Bitzer? He rides his old Velocette in the AHRMA events. Has a honda 230 and a Kawisaki street bike plus a bunch of other old bikes. I try to stay away from wet kiss's with my Dad and family. It's not like we live in Oklahoma :chairfall:

    My Mom and Dad are in Australia right now for a Velocette Rally then in New Zealand. They wont be back untill the new year.

    Clive,

    I've ridden your Dad's Velo a couple of times, really neat bike. He told me it's a "Bit'sa", actually, cause it's made from "bits of this, and bits of that".

    A photo of Dad from the 1994 PITS calendar.

    Jon

    ps. Trying a different scan of photo. I think I remember your Dad saying it was a Velocette engine in a BSA frame?

    post-2532-1258642994.jpg

  8. Fergie you sound like my Dad. He cant stand bikes that dont get ridden. He is 77 or so, got to keep him on his toes. I plan on showing it for a while then maybe ride it.

    Just noticed I spelled Sherpa wrong on the topic.

    Beautiful bike!

    Give your Dad a big wet kiss for me. Is he still riding his "bitzer"?

    Jon

  9. Neatsfoot oil buy from horsey tack shops brush it on let it soak in and repeat as neccesary good luck

    That's what I've used for many years and it's easy to come by. I have an very old pair of

    Hi-Point Trials boots and the leather is still not cracked and very soft to this day.

    The sporting goods stores also sell an oil for softening up baseball gloves and I've

    had good results with that also.

    Jon

  10. Hi all, phoned gas gas uk today & asked what oil should be used in my 97 JTX 270

    He was saying use any 750ml of oil in the gearbox and any good 2stroke oil at 80-1 with the fuel. But not silkolene as it clogs up the rings.

    Can any one give me some oil specs for the above model please?

    Do I use synthetic non synthetic part synthetic 10-30 / 10-40 I live in Scotland UK

    Need as much info as possable Thanks............

    In the 96-97's we usually ran 650-700cc's of Dexron ATF, changed often. A full-synthetic premix oil at 80:1 works well. I run Castrol TTS

    in my bikes now, but also ran the Silkolene Pro-2 for several years with no problems.

    Jon

  11. Jon, you should've come out to play at the Bay on Sat. We had a good group. Ron was demoing some big stuff for a couple newbies I brought out.

    BTW NEOTT is having an event at App Bay this Sunday. After yesterday and today's rain, the sand should be packed nicely.

    Sorry to miss the ride as I was in Dallas. I'll miss the event this month ( the Bay is always a really fun place to ride) as I'll be in Utah for a week and after I get back I'll be out to Florida during the next event. Just want you guys to know I haven't packed Trials in, I'm just running all over the place and I can't wait to get back to riding again. The new year should see a break in my schedule so I'll be able to make the events! Darn, after 14 years of retirement, I may have to get a job to get any rest....:chairfall:

    I know you guys will fall down a couple of times in my honor.........thanks!

    Jon

  12. Thanks for sharing the pics! In roadracing, they always taught us to turn the head and look through the turn. From that pic, I may be looking too far through the turn for trials. :wub:

    Another great Central Regional Series event. Thanks AVTA for putting on the KS round. I'm amazed at how good the trials riding is in OK, KS, MO and TX.

    I know from years of photography and working with top-level professional riders that the more advanced they are, the farther they look ahead to the next obstacle, jump or turn. Looks like you're ready for the Master Class, Charles.....:icon_salut:

    Jon

  13. Basically the Iplayer won't let you watch the "new" series od "Spooks" (airing now in the UK) because you have a US Proxy address. If you can find a UK Proxy that is a way around the problem. Obviously "Torchwood" went down very well in the US as well as the UK. "Primeval" is also popular. New stuff could include "Paradox" coming soon on the BBC.

    Many thanks!

    A lot of the good stuff flies under the radar and I happen to catch it after a program or two. I'll keep watch for these programs now.

    I'm always looking for something with a plot as the reality shows (oxymoronic to the extreme) here are terminal boredom, but cheap

    to produce so the profits are high and they fill up schedules.

    We like "Spooks" (or "MI-5" as it's known here) as it keeps our attention every minute and is not predictable in outcome, kinda like

    our lives in general.......:icon_salut:

    Jon.

  14. Thank you Jon, after much research I can say ur correct with the 1997 & the nut problem, unfortunatly the nuts have already worn away the plastic around them.

    So I am now looking for a new tank & tap.

    Thanks for the help & sorry for the above coment................ XxX

    No problem, all is forgiven....:ph34r:

    We all know how frustrating working on bikes can be at times.

    Cheers.

    Jon

  15. Have a look at www.bbc.co.uk

    Most stuff can now be watched online via BBC I-Player but I'm not sure if it works oversees yet. When I last tried from the states it didn't but I heard that was changing.

    Thanks!

    Jon

  16. Thanks all for your help on this matter.................... :ph34r:

    Sarcasm being a poor way to establish a relationship aside,

    it would appear you have a 1997 JTX with a plastic tank rather than a 1999 model, as you stated,

    with an aluminum tank (which made it somewhat difficult to figure out what the problem was).

    In the plastic tanks, the screws go into captured nuts molded into the shell. Be very careful trying

    to remove them, they need strong, steady pressure to back out. If you try to remove them quickly, there

    is a good chance you will cause the nuts to spin and enlarge the area that surrounds them, which will

    then make it very difficult to get the fuel tap off.

    You're welcome.

    Jon

  17. Well, I've taken the whole clutch off and the kick start assembly and it would seem that the kick start pawl may be the cause of the swarf:

    What do people think? The pawl teeth are very burred and sharp. I'm tempted to replace the pawl, the gear and the springs, put it all back together with a new gasket and see how it goes.

    If there was noise or the gear box was clunky I wouldn't mess about, I'd strip it but I'd rather be riding it instead of having it in bits everywhere until I can find some time to sort it out.

    You might be o.k. as the pawl assembly is outside the main case, so the magnet is more likely to pick up the swarf before the trans bearings do. This is a classic case of what happens when the racheting mechanism is not engaged before kicking on the lever.

    Jon

  18. i am 6 foot 4 and wondering if it would help over standard gg bar.

    anyone else had any benefit from a higher bar

    At 6 4, I would imagine taller bars will help a lot. I've been using a set of Hebo bars (HR30009285) for about 3+ years now and it really helps the back. Here's a comparison to the slightly taller black GG bars (some are really low):

    post-2532-1257963944.jpg

    post-2532-1257963975.jpg

  19. "I didn't get many photos as I was taking care of bottlenecks and checking sections, but got a few. I can't upload them as the site upload program insists a resized 122 Kb photo file is larger than the 2MB max upload size and no amount of pleading will work (and I'm REALLY good at pleading....)"

    Got it sorted out now, here's a few photos. Mike Peterson made the cool over-all trophies, a compass/weather vane.

    post-2532-1257961648.jpg

    post-2532-1257961672.jpg

    post-2532-1257961691.jpg

    post-2532-1257961727.jpg

    post-2532-1257961840.jpg

    post-2532-1257961855.jpg

  20. We get some really neat BBC stuff on this side of the pond, although it takes some time to swim over and is usually only run on our Public TV stations. My wife and I have recently become addicted to "MI-5", which I understand ran some time ago "over there". Since the lead time can be substancial, my question is: what good programs on the air now do you think I should be on the lookout for in the future?

    Jon

  21. What a great day we had today! 90+ riders, fantastic weather, great sections for morning & afternoon riders, and Pat Smage, too! The quarry was jumping with riders from Minnesota, Wisconsin, Missouri, Tennesee, Kansas, Oklahoma, & Texas (the pits were packed!). The annual bike launch went off smoothly as did dinner, too. Tomorrow promises more of the same. Dale Malasek brought the 2010 Gas Gas for everyone to see and it was nicely priced, too.

    If you couldn't make this year's event mark your calendar for next year! I'll try to post a picture or two later...

    Greg

    Hi Greg!

    I didn't get many photos as I was taking care of bottlenecks and checking sections, but got a few. I can't upload them as the site upload program insists a resized 122 Kb photo file is larger than the 2MB max upload size and no amount of pleading will work (and I'm REALLY good at pleading....) The bike toss was neat as usual. I had the ramp angle, approximate velocity of subject and drop to surface all figured out and, as usual, the red missle went in the opposite direction, but I'm bringing one of my computers next year....:ph34r: At least I was smart enough to park well away from the bonfire this year........

    Weather was perfect, good moisture in sections and everybody had a great time. The four-state CRTC events are really fun to be at. Each club goes out of it's way to make out-of-state riders feel welcome and the clubmembers always take good care of the riders and spectators. Pat Smage put on a great show for everybody. In one of my sections, and with Brad Villand's astute coaching, I think he hopped on every huge rock in the section just for fun, and came out with a clean.

    Jon

 
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