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dan williams

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Everything posted by dan williams
 
 
  1. The stock brake lines are 1/8” J. Juan lines but I haven’t found any specs for the hose. There are ultra-low expansion hydraulic hoses but finding specs is proving difficult.
  2. Yeah I remember that. There were always custom goodies on Ron’s bikes. Including a few Ron specific mods. Always amazed me the stuff Ron Jr. could do especially since he could barely flex his throttle wrist. He’d turn the throttle on by rolling it under his fingers and control power with clutch technique.
  3. “There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened.” Hitchhiker’s Guide to the Galaxy In my never ending quest to improve my Beta (and ignore the fact that I’m the weak link) I’ve been thinking about the generally accepted weakness or at least variable feel of the Beta rear brake. It uses the same master cylinder as the other bikes. The caliper is not particularly different. I can only come up with one big difference between Beta and the other brands. Beta’s brake is on the other side of the swingarm. In itself not significant but the brake hose is roughly twice the length of the other bikes. This makes the Beta twice as sensitive to the effect of hose expansion under pressure. Could something this simple be why Beta rear brakes are not on par with other manufacturers? I feel some research coming.🤔
  4. Looks like they've upped their game. Much nicer looking bike.
  5. I need to update it. So much good information added through this thread.
  6. The waiting begins. Really looking forward to seeing how this develops. EM paved the way but they are really going to be hurting once a few more electrics get released and this latest prototype looks very interesting.
  7. Could be air leak in manifold between carb and cylinder. Pretty much only thing I can think of if slide is retuning properly to rest position in carb. If the bike revs up again stick something over the exhaust to drop the revs then the kill switch should work. When an engine is screaming the ignition of the mixture can become self sustaining. The other thing that can happen is there is so much primary ignition current being generated the few ohms resistance in the kill switch can leave enough current in the primary to keep firing the plug. I’ve pulled the plug wire too. I’ll never do it again. Pretty sure I felt my heart stop. 😳 Didn’t like it. You might want to check the ground connection of your kill switch. Beta did a stupid wiring setup on some of the rev3s where they grounded to a lug behind the number plate to the triple clamp. Caused dodgy kill switch and lighting behavior. I always ran a larger ground wire back through the harness to a hard ground point on the frame. Specifically one of the mounting screws of the coil.
  8. There’s endless debate about copper core/iridium/projected tip variants. They all work and I have yet to see any advantage one over the other with only one suspected fouled plug in the last 20 years. The main variable is heat range and that is something that only your engine can tell you if it’s correct because it’s going to be affected by oil mixture, air density, fuel/air mixture, style of riding…. So if your BR5ES looks good when you eyeball it then it’s all good. If it looks hot then drop to the BR7ES. Despite few changes to the fundamentals of their engines Beta have recommended different variations of plugs usually in the NGK 7 heat range with the latest being the ridiculously priced NGK IR GR7CI-8 which is basically a BR7EIX for twice the price. Just like oils the recommended plug has as much to do with sponsorship as performance. I think the newest iridium plug recommendation is emissions based though as it’s not uncommon now for “off road” bikes to come with sealed carburetors and security screws on manifolds and such. Even the EVOs have different jetting now for “homologation”.
  9. The early Leonelli had the reverse magnet polarity to the Jitsie so they didn’t work if you mixed the cap and switch assembly. The problem is the way these switches work. A normally open magnetic switch doesn’t care about the magnet polarity but the normally closed switch does because it has a magnet in the switch housing that closes the reed switch. When a second magnet of opposite polarity is placed in proximity to the reed it cancels the field of the first magnet and the reed switch opens. As for the magnets falling out of the cap I’ve had a few do that. I drilled a small hole in the top of the caps and injected superglue in on top of the magnets. They’re not going anywhere now.😁
  10. Had a guy at a go fast road bike shop do that. Asked him if he’d like a putt. He said, “Yeah” and all his buddies came out to watch. I warned him not to underestimate the bike and go easy on the throttle. He starts it after a few kicks. Puts it in gear and pops the clutch with the usual reaction of the bike squirting out from under him. He chased it all the way across the parking lot finally getting it back under control he sits on it and timidly rides back and gives me the bike. All the time his buddies are roaring with laughter. Back in the shop he tells me, “I can wheelie a GSXR1000 until it runs out of gas but that thing just scared the s*** out of me!”😃
  11. Maybe we should find a dealer in the UK for your lanyards/magnets and my clutch washers. Then we could just send over one box.😃
  12. My evil nemesis Dave makes these. The lanyards are really good. Bright colors so you can find them and non-elastic so they don’t launch or hit you in various sensitive body parts when they come off the bike. Dave makes a lot of custom bits like number plates, choke lever extenders and kickstand feet. NOTE: Dave isn’t really evil it’s just that I can’t beat the guy. Even though I’m on a ‘20 EVO Factory and he’s on an ancient TY175. 😃
  13. Wow! That looks like you messed up and double oiled your fuel.
  14. Hopefully we get to ride the event in RI together in Sept. If you haven’t ridden Exeter it’s not to be missed.
  15. Your oil is roughly the same as 15wt motor oil according to the charts I can find so nothing odd there. It sounds to me as if your clutch is operating properly but you could try adjusting the set screw in a bit while making sure the master piston still sits on its circlip. Does the clutch drag at all? One thing most new trials bike owners do is adjust their levers so they can get all their fingers on the lever. I understand as I had a Maico years ago. But most of us ride with one finger on the clutch and brake and move our lever perches as far to the center of the bars as they will go. This changes the leverage and the feel of things. Just a thought. Anything you post to this forum will get you a wide range of opinions but in the end you just have to mess with the settings until you get something you're happy with.
  16. You’re fine. That’s the correct rest position.
  17. I’ve found the better riders tend to like having the clutch engage a bit further out. I like it to start to grab fairly close to the bar which is why I like the clutch to be really progressive. What oil are you running?
  18. Give the hydraulics a bit of time to settle in before you adjust. Six 2.7 plates is the older configuration and the one I prefer. You can get some adjustment of the bite point by shimming the thrust washer on the throwout bearing but you might just need to back the lever adjuster of a bit.
  19. On bikes with clutch packs of six fiber plates like Betas and Shercos the clutch fix improves the clutch action significantly in a lot of bikes. Your GasGas clutch has a much smaller pack due to the use of a diaphragm spring so the Beta clutch fix will have less of an effect. Like all bikes it's critical to make sure the clutch mechanism provides all the expected throw (pushes the pressure plate the correct distance) but the diaphragm clutch is also sensitive to where that throw occurs in the transfer curve of the spring. So as lineaway said you have to set the height of the mechanism correctly or it will never quite work right.
  20. There is an inherent sticky problem with the Beta clutch which the fix fixes but before you start replacing stuff you need to make sure the actuator mechanism is actually doing what it's supposed to. All it does is move a pressure plat approximately 1.2mm. Put the bike on its side and pull the clutch pack cover (the round one) off. Be careful not to damage the piddly little round O-Ring gasket. Now with your finger on the pressure plate pull the clutch lever and make sure the pressure plate moves. If it does good. The fix will probably help you. If it doesn't the problem is in the hydraulics or somebody left the ball bearing out of the throw-out assembly. A fairly common mistake. '97 is a Beta Techno. The EVO model didn't come out until '09
  21. Thanks. I’ve got an EVO for trials. Just want a non-trials bike for chasing the wife around on her trail bike. Don’t need a 13” suspended race bike so this sounds perfect.
  22. Not exactly trials but there’s an ‘02 Pampara for sale that looks in good condition. Are parts available at all or would this be a mistake?
  23. Oh thank god! Given some of what’s come out of the FIM it wouldn’t have surprised me. Remember when the minimum weight requirement “leveled the playing field”? No? Just like the elimination of stop and hop “leveled the playing field”. Both made it much more affordable and greatly increased participation. Except they didn’t.
  24. Saw an article in todotrial that a Chinese tire manufacturer is to be the sole supplier for the WTC and it will “improve” competition by having less traction. Somebody please tell me this was an April fools joke.
  25. On a MX bike you are blowing a lot of oil out the exhaust. On a trials bike the engine speed is so low that a higher ratio will just pool in the crankcase and gum up the exhaust. Most run their bikes around 80:1 but 100:1 is not unheard of especially if you’re a plonker. For reference the Vertigo with fuel injection runs at 200:1. Modern engines with water cooling and electrofusion cylinders don’t have the same thermal stresses as the old iron bore air cooled engines. Even at the higher oil ratios I haven’t seen an oil related failure in a modern engine.
 
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