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allankelly1:
Or question for all as it looks a tad rich at 2 1/4 turns out do I drop the pilots to 38s?
From where it was to now is light and day but want just to crisp up the initial throttle response
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K2-K6:
--- Quote from: allankelly1 on July 21, 2021, 08:13:43 PM ---Or question for all as it looks a tad rich at 2 1/4 turns out do I drop the pilots to 38s?
From where it was to now is light and day but want just to crisp up the initial throttle response
Sent from my iPhone using Tapatalk
--- End quote ---
Yes to this. If you are running a certain size idle jet and you have to wind the airscrew out near to 3 turns, then that indicates it "wants" a smaller jet.
Essentially the airscrew should be somewhere near to 1 1/2 turns out to give a linear response with using a slightly smaller jet to then bring the circuit into competent range.
Equally, if you had to use less than 3/4 turn airscrew just to get it rich enough, that would prompt a larger jet size to approach from the opposite direction.
Just to test and asses, try it with plugs at 0.5 gap. It won't change the jetting at all but may improve the flat spot by more consistent combustion propagation.
allankelly1:
--- Quote from: K2-K6 on July 21, 2021, 08:35:30 PM ---
--- Quote from: allankelly1 on July 21, 2021, 08:13:43 PM ---Or question for all as it looks a tad rich at 2 1/4 turns out do I drop the pilots to 38s?
From where it was to now is light and day but want just to crisp up the initial throttle response
Sent from my iPhone using Tapatalk
--- End quote ---
Yes to this. If you are running a certain size idle jet and you have to wind the airscrew out near to 3 turns, then that indicates it "wants" a smaller jet.
Essentially the airscrew should be somewhere near to 1 1/2 turns out to give a linear response with using a slightly smaller jet to then bring the circuit into competent range.
Equally, if you had to use less than 3/4 turn airscrew just to get it rich enough, that would prompt a larger jet size to approach from the opposite direction.
Just to test and asses, try it with plugs at 0.5 gap. It won't change the jetting at all but may improve the flat spot by more consistent combustion propagation.
--- End quote ---
Hi K2-K6
Ok I will order some 38s and while I am waiting for them I will close up plugs to 0.5 as suggested
To be honest from where I was to get where I am is fantastic as it’s gone from a bag of nails to something that pulls right thru the Rev range other than the initial pick up
If I can just crisp up this that would be the icing on the cake
Will update all as I do small changes
Ride safe all Al
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allankelly1:
Ok last question please
Where is the best place to get the pilots please?
Any recommendations
I have used Allen performance for my rd but customer service was sketchy at best so any other supplies or does anybody on here supply please
Saw this supplier on eBay??
TIA
Best wishes Al
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K2-K6:
No recommendation as haven't bought any for a while, perhaps someone more current can suggest.
Sounds like you're quite close in how it's running, certainly good when you get decent progress in sorting something out like this and with a little fine tuning left to get there.
Just a quick thought though, have you a good condition air filter installed as they can be fairly sensitive to anomalies there.
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