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Post by lostforawhile on Oct 13, 2017 8:42:01 GMT -5
if the scooter has been sitting that long with ethanol gas in the carb, then get a cheap carb on ebay and just replace it, did you check your petcock valve under the tank? they are dirt cheap and fail all the time. all your old gas needs to come out of the tank and carb anyway. did you ever actually check the spark? a weak spark will spark outside of the combustion chamber but not under compression. I'm having this issue now, and I suspect a weak charge coil on the stator, a new stator and the tool to remove the flywheel are only 25 bucks on amazon. did you check your valve clearances?
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Post by lostforawhile on Oct 13, 2017 8:05:30 GMT -5
I not only replaced the connections, i moved the entire CDI over to the frame, near where the Stator wires come out, as I was suspect of the crappy wiring to it. I cut off a pigtail from under the battery tray, soldered and heat shrunk the wires to it, then the trigger and CDI power wires are high quality aircraft spade connectors, this shortens the wires from the stator to the CDI considerably, I suspected the coil as well, so I'm running a Yamaha cdi type coil, which is much better then factory. The cdi should have no issue with it as most single plug transformer type coils are pretty much the same. I know you can run most automotive coil on plugs with these too. I have spark outside of the cylinder and the CDI input voltage from the stator is low. I drilled and tapped the frame, and installed grounds for the CDI box, and for the coil, it grounds to the frame, but i added an extra ground from the bolt I have yet to see a good blue spark, even at night, but it's hard to tell because on a lot of AC fired ignitions you don't get the blue spark like on a DC powered CDI. I had been having issues with popping and back firing before this happened, and the plug I recently installed, now looks black like a misfire, It's not a rich issue as I hadn't changed anything in the jetting at that point, and the previous plug looked ok. It was acting like an ignition issue , I installed a new OEM cdi box also,
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Post by lostforawhile on Oct 12, 2017 21:02:07 GMT -5
battery is nearly new, the starter is spinning at normal speed, before it quit i had to start kick starting it, sometimes this happens with a failing charge coil, kick starting it turns the engine over faster producing a higher initial voltage. It's an AC cdi so it should start regardless of the battery anyway.
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Post by lostforawhile on Oct 12, 2017 1:09:06 GMT -5
yep, M6 you ought to see the restricted crap in one of those mufflers, its amazing they even run
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Post by lostforawhile on Oct 12, 2017 0:53:32 GMT -5
Yiben Scout YB50-QT3 Ok I have done everything to get this bike running again, cleaned the carb, changed the CDI out, changed the coil out, checked the valves, changed the gas, I have compression, fuel, and spark with a plug outside of the cylinder, but the engine won't fire even once, I have exhausted every explanation i could think of, the only thing left is a weak charge coil on the stator, that is letting the CDI fire the coil, but at a lower voltage. The CDI can only step up the voltage depending on what it's given. I've been having issues where the bike would run great, then suddenly run worth a crap, it would miss, backfire, etc. My plug had been looking good, but when I pulled it this time, it was fouled, probably by a misfire. I replaced the CDI with a factory high quality one, which is the only CDI that will work on this bike, I just replaced the coil with a Suzuki coil and wire, which is very close to the factory one, but much better quality, it fires fine. I've cleaned the carb, and installed a new jet, which I was going to tune, but it never started again, it should be set well enough to at least run, or start. it's like the ignition system took a crap, the only thing left is the stator , I'm getting about 30 volts to the CDI while cranking,which seems low, but will fire a plug . The fact that a grounded plug will fire, takes the kill switch out of the equation, a bad cdi out, a bad coil out, there may not be enough voltage to fire under compression , I did notice that the charge coil voltage dropped from 79 while cranking open circuit, to 30 with the cdi connected, some voltage drop is normal but that's a lot Read more: 49ccscoot.proboards.com/thread/20129/weak-stator#ixzz4vGogUzdn |
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Post by lostforawhile on Oct 10, 2017 16:19:53 GMT -5
Hobbes got to ride around with spaceman spiff, and all the girls liked him. I love Tigger because my daughter loved Tigger and I used to be able to pull off his voice, but he's the Irish setter of the tiger world, bouncing everywhere with his tongue hanging out, and not a brain cell in his head
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Post by lostforawhile on Oct 9, 2017 20:10:35 GMT -5
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Post by lostforawhile on Oct 9, 2017 19:54:15 GMT -5
I have never ridden a Harley, but it always amazes me how long a couple of hog riders that just met each other can talk about their current rides AND every other Harley they ever owned. The bikes are members of their families. We scooter riders can learn a few things from those Harley riders; like unity and enthusiasm. in england and many other countries scooter riders are like harley riders here |
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Post by lostforawhile on Oct 9, 2017 17:43:09 GMT -5
Yeah Leo, I read that post. And was jealous. That's EXACTLY the type of ride I'd love! Just a group enjoying the entirety of the trip, not the ride itself. From what I read on the Mad Totos' site, they do split their ride--one for the bats, and one for the bats on 50cc's (what they called a slow ride but still seemed like nothing so much as go as far and as fast as possible for your smaller engines). No "slow leisurely jaunt" but miles-long love the riding. I guess if you're into that, driving your vehicles (car/bike/whatever) around for the feel of driving, then that's fine. But I have never seen the point of driving just to be driving. The point of driving is to go somewhere. You might not have a set destination (like on Leo's group-jaunt), but there's still at least some sort of point to the drive besides just driving around. I'm sorry, I'm such a girl aren't I.   >'Kat the point of riding is to just enjoy the ride, especially on a scoot, you are down to really the basics of riding, it was the same in the very early days of motorcycles, many had a single cylinder, weren't very fast, and broke down, but it was a sense of adventure and to keep moving forward. a car is designed to go from point a to b, |
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Post by lostforawhile on Oct 8, 2017 21:50:01 GMT -5
By "car like" I meant the reason they purchased them. For transportation, gas savings or shopping. Utilitarian purposes have nothing to do with "bike culture" or performance as such.  I like my 100 miles a gallon, but the gas savings are pretty much wiped out by the constantly breaking parts on the scoot, but I like tinkering with things, just fixed my muffler , installed my new jets, and the ignition fried on starting. so Now I'm waiting on a new coil, and a hard to find CDI box from a china parts supplier, in England, I have some oddball cdi where none of the standard cheap CDI boxes will work on it,if I wasn't a machinist and mechanic, I would have kicked this thing to the curb and bought a different one already, but that would go against anything can be fixed , I cut up the remains of the clogged muffler and it's brackets and welded on a genuine Cherry Bomb lol |
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Post by lostforawhile on Oct 8, 2017 11:42:07 GMT -5
Well Leo, I remember watching "Scootermania" on youtube and a British commentator said that buying a Vespa (and by extention ALL scooters) was more like buying a two wheeled car than a motorcycle. Too bad your not in range, we could have coffee and really talk bikes.
What he left out is the type, in general, who buy scooters. They're people who only see them as transportation. As a result many don't understand the motorcyclist and think the difference between them is personal. It isn't. Bikers buy bikes for the sensations they get riding. Scooter owners don't see that a covered engine, heavily muffled, automatic transmission and a built in trunk is about as "Car" as it gets in many ways. car like? lol I could see i you put one of those canopy windshields over it, but even then nothing like a car |
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Post by lostforawhile on Sept 27, 2017 19:41:57 GMT -5
baddest arm wrestler ever to live, and was from here, he was a pig farmer, he was the inspiration for over the top. He was supposed to be in the movie, but he couldn't act, so they cut him out they say he could carry a fully grown pig under each arm like children www.noe-v.com/images/articles/clevedean01.jpg |
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Post by lostforawhile on Sept 27, 2017 19:32:09 GMT -5
For your info jumping off a battery charger or a vehicle battery can kill your electrical system. It's because of the amps also I would check All your wires on the scooter for any burned wire And check your fuses. the amperage has nothing to do with it, a battery charger or a car battery is exactly the same except it has more storage capacity, no more current is going to flow in the system, then with the stock battery, voltage is the same, resistance is the same, current is the same |
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Post by lostforawhile on Sept 27, 2017 19:28:37 GMT -5
jasper, 50 to 100 volts of input to the coil seems excessive to me, and quite likely has burned out the coil. i would imagine that the CDI isn't really a capacitive discharge but instead relies on the coil to give the voltage increase. this would imply the CDI output be a maximum of battery voltage. i have no idea how you measured these voltage spikes with a multimeter, they are of such short duration that only an oscilloscope can detect them. the typical output of a Cdi into the coil is around 250-600 volts, you can't measure the full voltage output unless you have a good meter with peak hold. These are nothing like an inductive type ignition coil, these coils fire when voltage is applied, not interrupted |
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Riding Pants
by: lostforawhile - Sept 25, 2017 21:06:39 GMT -5
Post by lostforawhile on Sept 25, 2017 21:06:39 GMT -5
in my case my carhart is the dark blue canvas with the blanket lining, incredibly tough jackets, I'm thinking of some bohn Armour to wear under it. If you look for one look for the older used ones, i understand some are now made overseas and the quality has suffered. these are lifetime jackets, you can pass these down to your kids
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