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Post by JerryScript on Mar 14, 2016 21:10:23 GMT -5
First try adjusting the accelerator spring. Make it bend a little more if you think it's lean, if that makes it worse, take some bend out.
The accelerator pump squirts a bit of fuel into the venturi when you first twist the throttle, compensating for the extra air let in by the butterfly being opened which lowers the vacuum meaning less fuel being pulled thru the jets till the vacuum recovers.
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Post by JerryScript on Mar 14, 2016 16:21:23 GMT -5
Start with the same setting as the old carb. Once you tune it to idle well, take it for a test run. If it acts up when accelerating above half throttle (not at takeoff), you need to adjust the clip height.
If you adjust it one way, and it gets worse, go the other way.
If it improves while adjusting, but still has some of the same problem after moving the clip all the way up or down, you need to change the main jet (if you moved the clip down, you need to upjet, if you moved the clip to the top notch, you need to down jet).
If you do have to change the jet, set the clip to the middle notch, then go thru tuning and adjusting clip height again.
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Post by JerryScript on Mar 13, 2016 19:26:32 GMT -5
More take off power requires adjusting the clutch springs, roller/slider weights, and for the most power installing a BBK and stroker crankshaft.
More top end requires changing your final drive gears, though you can get a few more mph with slider weights and a BBK.
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Post by JerryScript on Mar 13, 2016 19:22:35 GMT -5
On one hand, it's less than a quart per change, so costs aren't as much of a factor as it is changing a car or truck's oil.
On the other hand, changing more frequently with dollar store oil has kept my scooters running fine. I have two 50cc scooters with 5000+ miles, and a 150cc that just hit 6000 miles. All have been running dollar store oil, with changes every 500 miles in cool months, and 300 miles during hot Vegas summers.
I personally believe frequency beats fanciness, but I say go with what makes you feel comfortable.
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Post by JerryScript on Mar 11, 2016 22:58:35 GMT -5
The cone filter probably is allowing more air in, making you run lean at idle. Does it stumble with quick blips on the throttle from idle, or does it roar from the accelerator pump's squirt? If it roars, try upjetting the idle jet one size, then re-adjust air/fuel and needle height to compensate.
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Post by JerryScript on Mar 10, 2016 1:12:40 GMT -5
Releasing the throttle, then twisting it again activates the accelerator pump, which sprays in a bit of extra fuel when you first twist the throttle. Since it helps you, that means you are definitely lean, probably due to your hose issues. Sometimes spraying carb cleaner around the hoses will help find a leak, the rpms will rise if it's lean and you spray an air leak spot.
Fix up the hoses and intake connections, then re-tune with Alley's guide.
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Post by JerryScript on Mar 8, 2016 3:27:31 GMT -5
Hmmm... INTERESTING!
That little 50 really got him around the city in no time. HOWEVER... Around here, if you rode ANYTHING on 2 wheels (from a Schwinn to a Harley) like he did, some Bubba in a rusty pickup would intentionally open his door in your face, wiping you off the bike and into the gutter.
And if you had the audacity to voice your disapproval while laying on your back bleeding, you'd likely get a load of 00 buckshot in the face as a reply. Or, Bubba would simply back up and run you over when traffic started up again. If traffic took TOO long to move, AND if Bubba was REALLY full of beer... He might exit the cage and relieve himself on your corpse. And toss your scoot in the truck as a trophy.
In short, if BUBBA in his cage ain't moving in traffic, NOBODY on 2 wheels is going to blow by him to the front of the line without MAJOR consequences...
 ![]()
I'd think some of the "questionable" passing practices in the video would be illegal and "ticketable" in many jurisdictions. It IS possible that New Zealand traffic laws are much different than ours.
At any rate, I wouldn't risk a certainly injurious, and potentially fatal encounter by passing stopped traffic like the guy in the video did.
I'm no sissy, but THAT kind of time-saving riding is TOO adventurous for me... At least at 70... AND, I even have electric-folding-mirrors for "lane-splitting"... If I gotta fold my mirrors to squeeze through, it's TOO tight a squeeze... LOL! 
Leo (staying mostly in my own lane) in Texas Filtering and lane splitting is legal in several US jurisdictions as well. I'm originally from Texas, born in El Paso, raised in Killeen, and I've dealt with plenty of Bubbas in my time. You hear folks say Bubba would do stuff like that, but like most Bubbas, you can tell how much true danger you are in based on the smell of the breath. You see, most Bubbas have no true courage, only the kind that comes in bottles and cans! |
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Post by JerryScript on Mar 7, 2016 11:25:05 GMT -5
Here is a great comparison of commuting in cars vs on scooters.
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Post by JerryScript on Mar 5, 2016 21:00:13 GMT -5
Nice looking shine, enjoy the ride!
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Post by JerryScript on Mar 5, 2016 13:01:48 GMT -5
Good job! Now enjoy the ride!
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Post by JerryScript on Mar 3, 2016 17:33:36 GMT -5
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Post by JerryScript on Mar 3, 2016 14:39:24 GMT -5
Easiest to just put a fuel filter on the end of the vent tube, and zip tie it high on the frame.
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Post by JerryScript on Mar 3, 2016 14:37:32 GMT -5
If it happens after it warms up, check th valve lash, probably too tight.
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Post by JerryScript on Mar 3, 2016 14:28:32 GMT -5
One of my little daily pleasures is watching the reactions of some motorcyclists and cagers as I take off ahead of them at lights, and they hit the gas hard to catch up. This video is the opposite of that, but still put a huge grin on my face! Here is the scooter rider's website, he heavily mods lots of scooters. niculin93.jimdo.com/ |
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Post by JerryScript on Feb 27, 2016 14:20:59 GMT -5
I watched it being done in the shop as my nephew's scooter was being assembled a few months back. You have to weld new mounting points to the frame, so your frame's configuration determines how complex the job would be.
There may be a kit solution, but I've only seen then for the ruckus frames.
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