Slide notched or not?

[thejackrabbit]

in the jetting database what are people referring to when it says the slide is notched or not?

[roverhybrids]

here you go:

[thejackrabbit]

so say my bikes idle changes in less than half a turn of the knob would cutting a notch make the idle more consistent?

[Jakobi]

I'm not a fan of the notch..

The idle area is a fine balance between air screw, pilot jet, needle diameter, and slide cutaway. Then if you add the notch you get another variable to deal with as well.

The goal here is to get the bike idling with the slide in a nice low position. If the spring on the adjuster is bound up and its holding the slide way up in order to idle you'll bypass the straight section of the needle which leads to even more inconsistancies as you're now adding more fuel due to the taper each time you raise the slide. The stock needle has a really short straight section, and is too rich for most the newer AS2 carbs. Net result is a bike that won't idle consistantly.

[Neil E.]

I look at a bit differently. The notch passes air for idling and as a result the slide can be closed further than non-notched. This would help the slide to stay on the short shank of the stock needle. The problem is that the stock needle sucks anyway.

I feel that a fat pilot with a long shank needle is good. The fat pilot reduces the chance of a hanging idle and the long shank creates a bit of a lean hole coming off idle. This gives good off idle operation. I rarely need more than 1/3 throttle for my type of riding.

[mjtursky]

I'm currently using a notched slide in my 250EC and like it. The theory is it passes more air over the fuel circuits which increases the signal. It's easier to jet leaner than to deal with a lazy fuel delivery issue.

[thejackrabbit]

is it possible to cut a notch out? looks like it's height lines up with the 1st ledge after the bottom and how wide is opening 1mm? 2?

[bowhunter007]

Originally Posted by thejackrabbit

is it possible to cut a notch out?

I would assume so...providing it's machined vs hacksaw.

[Neil E.]

The notch is .092 wide x .040 high. Easy to do if you have access to a milling machine, but also possible if you are careful with hand tools.

[john r b]

Slides from Sudco are $65 each. No notch,nor will they ''do that'' notch that is.
I know preposition.