i lowered that clip on the needle on carb one notch.

[gill vanderwerf]

i did what Greg told me to lower that clip on needle in carb by one notch but what is that doing exactingly..lol sorry such a noob !!!

 

[FOG]

The needle is tapered. The higher it sits the more room there is for fuel to flow and vice versa. Lowering the clip raises the needle which makes for a richer mixture.

 

[gill vanderwerf]

ok thanks

 

[Greg58]

Gill that was Wayne that told you to lower the clip, usually on a 48cc you need the clip in the top notch here at 1000 ft above sea level. I also have to re-jet smaller. I solder my jets and drill to the size I need.

 

[Greg58]

Just for reference most stock NT carbs for a 66cc come with a .026 main jet, on my bike with the expansion chamber the jet is a #72 drill or .025, the other bike with a 48cc is a #73 or .024. several of the 48cc kits I've built had what I think was a carb for a 66cc, when putting the kit together they just put a carb in the box, doesn't matter to them.

 

[gill vanderwerf]

so after all the tuning i took the bike out for a ride yesterday still have to peddle like crazy to get up a hill and when i am on a flat piece of road....not a whole lot of those where i live...lol i opened it up but i noticed still that it somehow it holds back or throttles back by it self when i go full out could that still be a mixture problem not enough or too much or is it just still the motor braking in....sorry to have to ask all those questions i do read alot about it but sometimes i just cant find a answer.

 

[Greg58]

It sounds like the jet is to big if you find it runs better at 1/2-3/4 throttle.