krazy
Gold Level Site Supporter
Hi,
I'm getting a slight rich condition at 1/8 throttle (but not too bad) and I've just done a plug chop at 1/2 throttle on a nice long 3/8 mile hill, see photo.
AS 1
40 pilot
N3EG top clip (leanest)
175 main
Motul 800 32:1
0-500ft 20c
The plug is light grey colour, definitely not tan or chocolate brown like we aim for. Is that too lean? I'm hesistant to do a WOT chop unless the 175 would be enough to richen it back up.
I can live with a slight richness at 1/8 throttle but I don't know about correcting a lean 1/2 throttle by using a richer needle and then having too much stumble at 1/8. So in my mind I am thinking a needle with richer diameter (leaner) but coming onto the taper sooner (lower clip pos) to fatten up the mid. Does that make sense or is it possible with N3xx needles? I thought they all had the same taper so all were about the same at half throttle.
Bike is powerful, 3rd gear power wheelies with 46t rear sprocket, no pinging.
I'm getting a slight rich condition at 1/8 throttle (but not too bad) and I've just done a plug chop at 1/2 throttle on a nice long 3/8 mile hill, see photo.
AS 1
40 pilot
N3EG top clip (leanest)
175 main
Motul 800 32:1
0-500ft 20c
The plug is light grey colour, definitely not tan or chocolate brown like we aim for. Is that too lean? I'm hesistant to do a WOT chop unless the 175 would be enough to richen it back up.
I can live with a slight richness at 1/8 throttle but I don't know about correcting a lean 1/2 throttle by using a richer needle and then having too much stumble at 1/8. So in my mind I am thinking a needle with richer diameter (leaner) but coming onto the taper sooner (lower clip pos) to fatten up the mid. Does that make sense or is it possible with N3xx needles? I thought they all had the same taper so all were about the same at half throttle.
Bike is powerful, 3rd gear power wheelies with 46t rear sprocket, no pinging.