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Post by JerryScript on Apr 17, 2015 1:05:32 GMT -5
Sometimes LED blinkers don't pull enough juice to activate the flasher unit, so they just stay on. Adding a resistor fixes it
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Post by JerryScript on Apr 16, 2015 23:37:20 GMT -5
It looks exactly like the retaining clip/spring that fell out of my performance plug boot. I tried to find a picture of one, but my Google fu is weak on this one.
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Post by JerryScript on Apr 16, 2015 17:05:59 GMT -5
I also had a similar problem, my spark plug boot was loose enough to cause it, even though it felt ok. Replaced it and haven't had the issue for 6 months, so I'm sure it was the problem in my case.
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Post by JerryScript on Apr 15, 2015 22:19:52 GMT -5
Looks like the spark plug boot retaining clip, some plug boots have them to help prevent them from vibrating off. Could have flown in when you removed the plug boot with the head off.
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Post by JerryScript on Apr 15, 2015 16:40:32 GMT -5
.007-.008 is recommended on the engine info plate on both of my scooter, but I find I get the best performance at .004-.005
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Post by JerryScript on Apr 15, 2015 16:36:29 GMT -5
I still love riding my 50cc around the neighborhood, it's agile and very fun with the BBK, instant throttle response at any speed. But for riding around town, the 16" and larger CVT make a huge difference both in riding comfort, and feeling secure riding with the cagers. If I can get the throttle response of my 50 by BBKing the 150, I will be a happy rider!
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Post by JerryScript on Apr 15, 2015 11:31:31 GMT -5
Might try wrapping a hose clamp around it, over the bolt head and under the housing. Though that fix may last, I would still order a proper cover, or go to a muffler shop and have one made.
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Post by JerryScript on Apr 14, 2015 20:35:08 GMT -5
Not only does it have a bigger variator and clutch pulleys (the clutch itself looks to be standard sized, looks small against everything else), it has different final drive gearing for the 16" wheels, not sure what they have for tooth count yet.
I believe the crank stroke is standard length, but the shaft is longer and has more splines on it. The intake is tall, which should help the flow into the engine.
I'll take pics of the CVT in a couple of days when I have a day off, gotta pull plastics and foot peg bracket just to get the CVT cover off. Has an interesting CVT air filter box over the variator side. As always, my cheapo Harbor Freight 12v impact wrench removes the variator and clutch nuts in 2-3 whacks!
BTW- 70mph+ was on the down slope, gotta find a good level stretch of highway to get a bona fide top speed test run on. I have no problem maintaining 65mph even in the up slopes, but no throttle left for emergencies at that point. Hence my desire for more displacement and proper CVT tuning.
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Post by JerryScript on Apr 14, 2015 0:18:00 GMT -5
The unused space at the edge of the variator is what makes me think I can get a bit more top end with a BBK and appropriate sliders. Regardless, I just can't leave my scooter stock, the modding bug gets me every time! Your 100% right jerry . with a little more power to turn heavier weights , you should get the higher climb and more top end. I'd love to see what she would do with a bigger head , exhaust and air fuel input ! The exhaust will be toughest, the port bolts are not in the same position as standard 150cc, according to what I've read while googling this motor. I haven't had the exhaust off yet, if it has one of those restriction tubes inside the header pipe, I'll at least try boring it out. Definitely will up the carb one size with any BBK, the stock one is not very responsive to a/f adjustments, nothing like a good Keihin! I'll be removing the mini propane tank sized air filter assembly and all emissions will come off then as well, switching to a lean clean uni installation. I've found a source for the oversized sliders that work with this variator. Stock rollers are 12.2g, so I'll order some 13g & 14g sliders to start the tuning with. I'll wait to see if there is any need for changes to the springs after the rest is done. It will be trial and error with the CVT, since I can't find other owners who have done much modding. I haven't seen any options for final drive ratio changes yet, but I haven't looked as hard as I have for other parts. If I end up with enough extra power to make use of a better ratio, I'll definitely consider it. |
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Post by JerryScript on Apr 13, 2015 23:56:54 GMT -5
I agree, probably a fuel delivery issue, or valves.
If the three basics check out, spark (visible), fuel flow (clean carb and filter & good fuel and vacuum lines), compression (blows your finger off the spark plug hole), I would normally bet the bankroll on valve lash, check it next, .003-.005mm (I set both at .004).
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Post by JerryScript on Apr 13, 2015 19:33:16 GMT -5
If you can't find rubber washers, o-rings are cheap and easy to find, and will work in most cases as well as a washer.
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Post by JerryScript on Apr 13, 2015 19:25:51 GMT -5
Sounds like the contacts are either out of position, or going bad (corrosion usually). I'm assuming the connectors are good.
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Post by JerryScript on Apr 13, 2015 19:21:32 GMT -5
Nice! 5k @ 45-50mph is perfect for around town. Good job tuning your CVT!
Remind us about your setup would ya? Which variator, size weights, clutch and contra springs, and which gears you went with?
Now you just need to move on up to proper sized wheels!
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Post by JerryScript on Apr 13, 2015 19:08:38 GMT -5
Unfortunately, "doesn't start" doesn't tell us anything that would help diagnose the issue(s). Give us a bit more info and we will try to help, such as
1- Does it turn over when you turn on the kill switch, raise the kickstand, pull in a brake lever, and press the start button, but just cranks without starting?
2- If it doesn't turn over, does the starter motor out solenoid make any noise (clicking or scraping/grinding)?
3- Have you tried to kick start it (with the kill switch on, kickstand raised, and brake handle pulled in)?
4- Have you checked the spark plug and coil connections, the spark plug boot can vibrate loose? (could have happened when he hit the driveway)
If the mechanic got her to fire with a butane torch, a carb cleaning could be the simple answer, or fuel filter, or fuel/vac line leaking. Let us know the symptoms when you try to start it, remember you only need feel/air, spark, and compression.
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Post by JerryScript on Apr 13, 2015 10:16:25 GMT -5
Jerry if you don't step up on the gear size I think you will only pick up getting to top speed, not increase top speed. With a BBK and gears you can add 10mph under the same throttle position. I'm glad your happy with what you got!!!!!!!!!!!!!!!!!!!!!!!!! John The unused space at the edge of the variator is what makes me think I can get a bit more top end with a BBK and appropriate sliders. Regardless, I just can't leave my scooter stock, the modding bug gets me every time! |
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