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Post by alleyoop on Feb 1, 2014 23:54:37 GMT -5
Speed is not the problem going down hill it's the RPMS the motor is turning , downhill the scoot is picking up speed all by itself just like rolling a ball downhill and no load on the motor. So the motors rpms start to rise along with the speed.
But since you say you can handle it call us from the hospital if your still breathing.
Alleyoop
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Post by jjoshua20213 on Feb 2, 2014 3:40:10 GMT -5
Speed is not the problem going down hill it's the RPMS the motor is turning , downhill the scoot is picking up speed all by itself just like rolling a ball downhill and no load on the motor. So the motors rpms start to rise along with the speed. But since you say you can handle it call us from the hospital if your still breathing. Alleyoop After the bbk for some reason the scooter dosn't pick up speed down hill like it used to. With stock downhill it would give me similar speeds to going flat on with bbk Before I installed an A9 camshaft I had a better top speed downhill with stock vs. the bbk. Almost feels like the bike is being forced downhill vs drawn down. Its like the bike would only go as fast as the rpm. As soon as I let off the throttle downhill or up the bike slows down considerably, with stock if would continue to glide at the speed and gradually slow down... No real way to tell my rpms unless I get a tach which is on my list.. If the engine were to instantly lock up that would cause the variator drive face to stop. Seeing how the transmission is belt drivin the back tire would be givin the hard braking effect vs. the lock up effect right? If I can lock up my back tire at high rpm/speed with the brake and have the engine keep running then it should be the same reversed right? |
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Post by jjoshua20213 on Feb 2, 2014 13:49:16 GMT -5
Second run with a lot of smoke at until it warms up. The oil was charcoal black, indicating excessive blow-by. I know I blew the rings.
However it runs fine, can I just keep riding or do the rings have an expiration date now?
Also, my plug looks fine so i'll leave the carb alone.
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Post by alleyoop on Feb 2, 2014 14:04:04 GMT -5
The scooter revs high, like really high. Maxing out going down hill, it was running so good I thought I was going to blow it. If I were to change the final gear ratio I don't think it would happen. The smoke was from the exhaust, When reved it produced more. I don't ever count miles I normally just check it randomly or when I think i've been riding alot. positive it never goes over 100miles though. If the rings are going, thats fine i'll just rebuild. I ride hard so its to be expected. Here you say it revs really high and maxing out going downhill. The higher revs are probably due to the A9 came that is what A8-A9 cams do produce higher rpms by opening and closing the valves quicker. As you go up in the Cam numbers A10+ it slows the opening and closing of the valves allowing for more air and fuel to come in and you get lower rpms but more low end torque. As far a locking up the rear wheel if the motor blows the sudden stoppage of the Variator no longer turning you do not know what it will do inside the CVT and could lock up the rear wheel which would be disastrous at speed is all I am saying. Alleyoop |
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Post by jjoshua20213 on Feb 2, 2014 14:10:19 GMT -5
The scooter revs high, like really high. Maxing out going down hill, it was running so good I thought I was going to blow it. If I were to change the final gear ratio I don't think it would happen. The smoke was from the exhaust, When reved it produced more. I don't ever count miles I normally just check it randomly or when I think i've been riding alot. positive it never goes over 100miles though. If the rings are going, thats fine i'll just rebuild. I ride hard so its to be expected. Here you say it revs really high and maxing out going downhill. The higher revs are probably due to the A9 came that is what A8-A9 cams do produce higher rpms by opening and closing the valves quicker. As you go up in the Cam numbers A10+ it slows the opening and closing of the valves allowing for more air and fuel to come in and you get lower rpms but more low end torque. As far a locking up the rear wheel if the motor blows the sudden stoppage of the Variator no longer turning you do not know what it will do inside the CVT and could lock up the rear wheel which would be disastrous at speed is all I am saying. Alleyoop Yea, it all makes sense. Thanks! I think that if I had checked and changed my oil and used a good oil instead of cheap oil it would have held up. |
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Post by jjoshua20213 on Feb 2, 2014 18:24:59 GMT -5
So the engine finally blew today. I went on a joy ride to test reliability and sure enough. It idles and starts fine but as soon as you hit the throttle it bogs and dies. Took it apart and the rings were fine but there was a substantial amount of scars on the cylinder and side of the piston. Its to my understanding that an piston heating faster than the cylinder will cause this or foreign debree getting into the gas/fuel mix. Checked my air filter and there is a part that's torn and letting in unfiltered air. seeing as its been snowing and salt and crap is all over the streets I think that might be the culprit. UPDATE: So I put everything back together. No smoke at start up, power came back, but still no power when gassed. I then suspected a clogged main jet.(I know i'm going backwards) Cleaned out the carb. Same results. Then I checked the needle jet and diaphragm. All looked good until I pulled up the diaphragm and there was no needle?  ? Turns out the needle top broke off and the needle fell all the way down and was blocking the gas passage. Replaced the needle with another one and the problem was solved. Only problem is the replacement was from a stock carb and only has one setting and is making me run lean. Anyone know where I can buy a needle jet for my carb? |
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..BAD TO THE BONE..
