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Post by ltdhpp on Jul 29, 2013 18:51:02 GMT -5
You need a larger jet for a BBK... an  is for bolt ons. Its not going to run right with any carb until you get the right jet in it. |
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Post by ltdhpp on Jul 29, 2013 18:30:03 GMT -5
Some extra fees will be worth it... 2strokes will fly when they are running good!
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Post by ltdhpp on Jul 28, 2013 10:59:15 GMT -5
Yeah, since I got to my CVT's 'happy place', I don't see much over 7K as well. I agree that accelerating at 6,500 seems just as good as at 7,500rpm, BUT this is only after intake and performance pipe so it can breathe really well now. Before that it seemed doggish until the rpms got up. It seems having your pulleys tuned right as far as 'belt gearing' is more important than rpm. But, before the performance pipe, I spent at least 2-3,000 miles spending time in the 7-8k rpm zone, and she's ok  After I put the performance pipe on, rpms started to approach 9k at top speed, that's when I decided to experiment with heavier sliders. |
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Post by ltdhpp on Jul 28, 2013 10:41:54 GMT -5
I don't think anyone could tell you that precisely since every scooter/setup is different... I'd just run with the filter and without the cap for now.
If you had a carb with an adjustable needle you could probably make it happy just with an adjustment.
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Post by ltdhpp on Jul 28, 2013 10:22:28 GMT -5
I will hand it to Alley, he hasn't lost his cool, like like we 'younger-generation' hotheads like to do ;D I admit I was a bit concerned about the grievances I aired, I was in a place where I felt like ruffling (or trying to) some feathers the other day, and was quick to jump on the bandwagon. I'm glad to see it takes more than that and a thread like this to get his lid off . I've never seen him flame anyone so bad, all I've seen has been pretty tame. Maybe I never got a chance to see those threads, but I know people generally get butthurt more easily than they should. Maybe I'm just used to seeing so much worse, another forum I am on used to have a troll who's sadistic narcissism was off the charts. Despite what I feel about his tech-technique, I give him respect for being able to brush off a call-out thread like this.  |
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Post by ltdhpp on Jul 28, 2013 9:56:14 GMT -5
once the clutch bell gets hot and expands they can't make enough contact with it. They really do that? lol... I'm glad I swapped out the one in the scooter I'm working on... the bell was blue like a smurf! And I happened to have the one from my old 50cc... so I swapped it out. And yes, I was fixing a shredded belt.. lol! |
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Post by ltdhpp on Jul 28, 2013 9:49:32 GMT -5
I never felt any sputtering when I experienced it, it just refuses to go over 7,000 rpm!
Once when I put the stock CDI back in the 150cc for giggles, sure enough the tiny tach i got since the blue CDI stopped at 7k and said the scooter never went any higher.
Also, a GY6 I did a tune-up on (and had a factory tach) would not go past about 7k, not even picking up speed downhill.
Likewise, this Kymco I've been fixing doesn't have a tach, but it sure sounds like the rpm's get to 7k and stay there.
Next time you go down a hill that most 50cc riders might like to measure their 'top speed' on, listen to your rpm's. If they don't sound like they go any higher than normal WOT (for a flat slope), you may be limited.
I can't see any pic of the part you're mentioning. Does WOT sputter like this at low speed as well as high speed?
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Post by ltdhpp on Jul 27, 2013 10:16:47 GMT -5
Have you practiced a panic stop yet?? This is another biggie... not only to figure out how quickly you can stop, but to make sure something doesn't go 'pop' or give out when you apply threshold pressure.
Also it's good to find the skid threshold of your rear brake... because if you have to go down, they taught us about forcing a low-side fall by locking up the rear brake. Evidently you have less chance of surviving a 'superman' high-side fall...
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Post by ltdhpp on Jul 27, 2013 9:59:57 GMT -5
Or, maybe they were not always there, and now you are running lean???
You should always consider all possibilities and experimenting is the only real way to determine your condition.
Have you tried adjusting your needle or at least the a/f screw yet, if it's adjustable? Do it! ;D it may even make it faster...
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Post by ltdhpp on Jul 27, 2013 9:40:25 GMT -5
Some states you can get away with anything... VA is a white/amber/red only state.
Let us know if you get the pics working... I love LED's, of course.
I wouldn't worry about them being too much of a load, I have about 50 SMDs on mine total, not including those that replace incandescents. My battery meter barely drops when I turn them on, and I bet that's mostly because my tail/brake bulbs are still incandescent. I haven't found an LED bulb replacement yet that can compete with direct sunlight.
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Post by ltdhpp on Jul 27, 2013 9:13:50 GMT -5
Anyone can sit behind a computer and regurgitate information... I have not seen one tech thread made by him that was something done with his own hands, and anytime I ask for some explanation to what I felt is an outrageous claim, he doesn't have anything to say. I'm sure he may not feel the need to reply because I'm 'ignorant', and thats fine. But, I only take anything he says with a half grain of salt... I'm 3 seasons new to scooters, but not new to message boards. I'm all too familiar with members that get banned from one forum and take refuge in another, constantly changing names... it happens for a reason. People get called out, people get butt-hurt, life goes on. Some people learn by reading, some learn by doing. I think that is the difference here... Anything I post about is something I have already experimented with, and so far the few times I've tried to give advice, I've been right. Two times that spring to mind, alley insisted that turning the A/F screw was the magical solution  and it was not... If you spread a big blanket of info over something, sure, you wind up right maybe half the time. But, you can cause members to waste a lot of time going down roads in the wrong direction. I'm sure alley is a good guy, but most of his posts i see make me go   such as "a performance clutch is just a stock clutch with tighter springs, don't waste your money" and his claim that 2k clutch springs are going to raise your operating rpms across the board, as in if your top speed rpm was 7k, it will now be 9k with 2k clutch springs installed |
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Post by ltdhpp on Jul 25, 2013 20:43:18 GMT -5
When changing the exhaust to a performance, or drilling it out, there's no need to re-jet, as you're not changing the AF ratio. Only when changing the air intake (like removing restrictions) do you need to rejet. If the bike is running fine, and you're just putting a larger airfilter but there's no real huge difference between both airfilters, you could always adjust with the AF screw, and rejetting might be entirely unnecessary. You sure about all that? The stock exhaust header pipe is one of the MAIN restrictions on a scooter and is about the same size as the muffler outlet. You can drill all you ant but you will never get rid of that. Some stock airboxes may as well be free flow, in which case an up-jet is absolutely necessary with aftermarket exhaust. Also, most people try both things before posting a comparison thread and making a conclusion about them... If drilling holes in the stock muffler was a ticket to free power, I'd think someone would have already figured that out by now... just sayin'... |
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Post by ltdhpp on Jul 24, 2013 12:07:14 GMT -5
I'm glad to see they are making those now with the good LED's in them... when they first came out they had the lousy old style LEDs and were about worthless.
They still sell them, so anyone shopping for something similar, beware the ones with outdated LEDs in them.
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Post by ltdhpp on Jul 23, 2013 17:56:12 GMT -5
After putting a windshield on my 150 (stock fit (lucky me) and DOT approved) I will never ride anything that doesn't have one, if I can help it.
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Post by ltdhpp on Jul 23, 2013 17:52:29 GMT -5
paul - there is always a chance you may have too much jet. If your exhaust can't move all the air the open filter can bring in, it wont do you any good. If that jet is too big, you could be getting way too much gas for optimal combustion.
The only way to know for sure is to experiment - drop the needle one notch at a time to see if it runs better at WOT. If no difference, try raising it up from where it was one notch at a time. If it runs better at either extreme, you may need to go up or down a jet size.
You should be revving nice and high with 5g rollers!
How exactly are you trying to tune the idle?
And of course check the valve clearance if it hasn't been done recently.
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is for bolt ons. Its not going to run right with any carb until you get the right jet in it.
