Carb slides.

[Samz]

Can any one tell me which slides are richer on a 22mm Delortto copy? Are the ones which are just flat richer than the ones that have a "scoop" cut out of the back?
Also, I'm I right in thinking, turning the airscrew IN on these carbs enriches the mixture? There seems to be conflicting advice between different websites.

Thanks for any advice.

[HxPaul]

Flat slides are for a 200 and "scooped"slides are for a 150.The mixture screw is wound out to richen it and in to weaken it.

[Samz]

Thanks for the reply.
I have a 125 with a 175 top end and using a scooped slide. It is running lean at the bottom end. Would the 200 (flat slide) be richer?

[Samz]

I've tried both slides, 150 one seemed to be the better option (not much in it tho).
Li 125 with a 175 top end,
22mm scootopia carb, 50 choke, 50 pilot, 125 main, 5899_2 atomiser.
Still seems to be running lean, air screw not doing much other than cutting out when fully in. Plug fairly light in colour, should it be darker?

IMG_0787.JPG

Previously had an air leak on the exhaust manifold, new gasket fitted.
Running out of ideas now
Any thoughts from those more knowledgeable than I ?

[hullygully]

anything above a 150cc I'd jet up to suit a 200cc, including the slide

[Samz]

Ok, thanks.

[foremanbob]

I've tried both slides, 150 one seemed to be the better option (not much in it tho).
Li 125 with a 175 top end,
22mm scootopia carb, 50 choke, 50 pilot, 125 main, 5899_2 atomiser.
Still seems to be running lean, air screw not doing much other than cutting out when fully in. Plug fairly light in colour, should it be darker?

IMG_0787.JPG

Previously had an air leak on the exhaust manifold, new gasket fitted.
Running out of ideas now
Any thoughts from those more knowledgeable than I ?

Plug is too new to tell... use an older plug with more deposits on it if you want to see whats going on

[Warkton Tornado No.1]

Unless everything is as per standard (exhaust, barrel state of tune) you should be in the right ball park with the good advice received as in similar set up to a 200. However, even a clubman will increase performance & need carburettor richening...

[Samz]

It has a 42mm clubman exhaust and standard air box and filter.
Thought I might try using a "colour tune" to see how it running at different revs.
Anyone used one on lammy? Was it helpful?

[Warkton Tornado No.1]

I've copied & pasted part of a tuning chart that should be a good guide for your set up:

Jetex carb jetting.JPG