Pissed n tired

[luvscooters]

So my scooter's sat for about a month I haven't touched it I had a soft seize the last time I took it out it's got extra oil I put in the gas I'm running the NCY stage 2 kit the 70cc with their idle yet I think it's a 42 idle jet and then I run a 95 main and then I have an adjustable needle which I've shimmed because it was running far as I was concerned really rich in the mid-range it was basically falling on its face. So the temperature now is about 70° the last time I wrote it was like 98° and very humid. Started it up brought it up to temperature took it out and gradually rolled on it I held it wide open for 2-3 seconds then I backed off brought it up to speed again and it's registering going up a good size Hill 48 49 mile an hour so that's like you know 43 realistically which is fine cuz it's pulling in accelerating going up a hill which obviously a 49cc isn't going to do. I wrote it a total of maybe a mile and bring it back to my house I had another pretty good grade Hill probably a 7° grade Hill that was a half mile long so I rolled on the gas and held it most of the way and right as I'm coming around the corner you know I get the soft seas or the engine spotters in the clutch releases and you just kind of like slow down and before I even came to the stop I grab the break it fired right up and I pulled it in my driveway and that was that. So needless to say I'm freaking pissed off and disgusted with this fucking thing at this point. I mean it's no big deal for me to put 100 main jet in it but it's not like the problems wide open I mean today was the day that it was really singing on that pipe and like a two-stroke should when I held it wide open I mean it was really really running great what I thought was great wide open I have a digital temperature gauge. I have two of them they're both pieces of shit they're so slow to register I modified the head I got rid of a fin so that the copper ring would sit flush under the spark plug. So it's as useless as tits on a bull to try to figure out where it's getting hot. And I'm just at my wit's end I really am I'm just like I don't need headaches in my life in this little fucking things turned into a headache.

[Lucass2T]

I had chatgpt condense your story to something more accessible:

My scooter, which had been idle for a month, experienced a soft seize last time.
It has extra oil in the gas and runs an NCY stage 2 70cc kit with a 42 idle jet and 95 main jet, plus an adjustable needle.
Despite this setup, it was running rich in the mid-range and falling short.
The temperature was around 70°F when I tested it, compared to 98°F previously. After a short ride, including a steep hill, the engine seized again just before stopping.
Despite modifications and a digital temperature gauge, which is inaccurate, I'm frustrated and fed up with the ongoing issues.

[pili]

Are you positive it's soft seizing and not just dying when you close the throttle?

[luvscooters]

Oh it's a soft sieze I know the difference because I could feel the engine slowing down when I was up to about 50 to 53 mph and then it would just die on me within a second or so the clutch releases and the bike is able to roll to a stop. I hit the start it fires up and then I just creep it home in a few mile an hour and let it cool off. So it's not as if the fuel air screw is off and that's what's causing it to stall when you chop the throttle because this is not chopping the throttle this is riding at a brisk rate and then you just feel that the engine is tightening up is the only way I can describe it because you're losing power and that's at the brink right as a soft siez is happening

[pili]

Yeah sounds right. Did you check ring gap? I like to have about .25 mm.

[Lucass2T]

Sept 21, 2024 15:00:29 GMT -5 pili said:

Yeah sounds right. Did you check ring gap? I like to have about .25 mm.

Malossi advises 0,15mm for their RC-one engines.
I always keep to 0,15mm.
I don't think 0,25 is wrong or excessive either.

[pili]

I saw the same spec. Yamaha calls for the same on the 50cc piston, so allowing for the larger piston I adjusted as 2 strokes love to rev freely. Judging from luvscooters’s symptoms it sounds like it might be getting tight. Might be wrong but it’s worked for me.