needle clip

filestyle1 · #1 (**permalink**) 07-08-2008, 01:06 PM

when you install the throttle into the slider barrel , should the needle clip be above or below the c - shaped washer? I have run both ways and seems to do fine either way but just looking for a census!

Pablo · #2 (**permalink**) 07-08-2008, 01:33 PM

Quote:

Originally Posted by filestyle1

when you install the throttle into the slider barrel , should the needle clip be above or below the c - shaped washer? I have run both ways and seems to do fine either way but just looking for a census!

How could it work either way??? The needle could "float" up if not in this order:

See: Motorized Bicycle Carburetor install and rebuild

stude13 · #3 (**permalink**) 07-08-2008, 07:14 PM

very nice paul

Pablo · #4 (**permalink**) 07-08-2008, 07:45 PM

I just stole Norman's pictures.

MarkTur · #5 (**permalink**) 07-08-2008, 07:49 PM

Oh...and I thought you were an upstanding individual!

(kidding)

Pablo · #6 (**permalink**) 07-08-2008, 07:56 PM

Naw I'm a natural plagiarizer and general clown about town and can be found outstanding in my field. But other than that, I'm a fine and serious dude.

Hey why re-invent the wheel?

MarkTur · #7 (**permalink**) 07-08-2008, 08:06 PM

LOL

Dude, help me out...I richen up my motor, and all of a sudden I can hit 35mph...but my idle is barely running with the screw turned all the way in. 35:1 AMSOil, NGK plug. The low end is HORRIBLE. I moved the clip to the third slot down from the blunt end. It was on the last slot - lean - before, and I had decent low end, but great mid, boggy high.... I know the high end now was too lean, but I guess the way I was riding it (half throttle) it was rich enough to give me a nice brown plug.

I'm actually ready to move on to a better bike and new motor, but don't know what to buy, or who from, and who's got anything in stock. But before I do anything, I want to get my motor right.

I ported both ports like you suggested, so that's no longer any type of bottleneck. I also have an o-ring in the carb to prevent air leaks - but I'm ready to pull it out and let some more in if nobody can give me a better suggestion.

Thanks!
Mark

Pablo · #8 (**permalink**) 07-08-2008, 08:31 PM

So have you actually ported your engine?

Or just matched the stock exhaust to the port? Or did you get an expansion pipe?

Same with intake? Port/gasket/manifold all match?

Is your engine well broken in? How many full tanks of fuel have you used?

Have your jets arrived? Have you measured your stock jet?

I need a better baseline - because it's quite odd going two clicks rich makes it run better. Especially at WOT.

Pablo · #9 (**permalink**) 07-08-2008, 08:32 PM

Sometimes the O-ring if too fat, makes it worse.

**Bikeguy Joe** · #10 (**permalink**) 07-09-2008, 08:14 AM

I have found that when I get an optimal full throttle mixture, the bottom end is too rich. Good off idle and mid? too lean at WOT.

I taper my needles to fix that. Not for the faint of heart.....