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Post by xyshannen on Oct 27, 2014 8:38:28 GMT -5
rcq92130 How did you break this top end in? If you ran it for short periods in cold weather you could have created condensation in the valve cover. Even running mine, it spits a lil water from that hose when it first fires up. By not allowing the motor to run long enough to evaporate this condensation, it could have built up.. And now it's actually blowing steam and water from the vent. Put the bike up on the stand, point a fan at the cooling fan on the stator and adjust the idle screw to bring the motor up to around 3k rpms. Now let it run until it burns off that water. Worse case is you loose the top end. If that is really smoke coming out of that vent, it's gone anyways. Still double check your oil to ensure water isn't in the crank case. Edit: I was just wondering...when you rebuilt your top end, did you take a paper towel and dowse it in oil then wipe out your cylinder jug? There is usually a good bit of machining dust left on the surface of a new cylinder. Mine took 5 wipes with fresh paper towels before it was clean. I was actually surprised at just how much I removed. The first couple of wipes made my paper towel absolutely filthy. If you don't do this, that dust can wipe out your rings before the motor is even broken in.
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Post by xyshannen on Oct 27, 2014 8:29:54 GMT -5
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Post by xyshannen on Oct 27, 2014 1:35:47 GMT -5
Yes, that does sound like a good idea. Mine is about even with the bottom of the tank. I may have to get me one of them fancy cams. Makes the bike sound good too. I'm actually about to open up the exit hole on my muffler. The exhaust from the engine hits the expansion of the muffler (glass pack removed) and is being forced out by the next pulse of gas before it has time to leave the muffler causing a pfft sound as the gas is rushed out of the stock hole. |
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Post by xyshannen on Oct 27, 2014 1:31:37 GMT -5
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Post by xyshannen on Oct 27, 2014 1:24:50 GMT -5
At this point, really any windshield will be better than no windshield. With my bike I'm going to have to use a universal mount windshield, and with how far my handlebars stick out I'm afraid I'm just going to have to wear a good pair of gloves this winter.
At any rate a windshield will definitely up my enjoyable cruising speed. However, on this scoot anything over 45 wind becomes a real problem. I get knocked all over the road if I'm not really paying attention. At 6'2" it helps if I tuck, but that's not comfortable for long periods. At 50+ MPH It almost turns into a white knuckle ride, where a little cross wind feels like the bike is going to slip out from under me. That's why I'm not doing my modifications to gain top speed. I'm more interested in my 0-50 speed and having the power @ 45 MPH to hit the gas and GO to get out of the way of insane Jacksonville drivers. I had to do 50 in a 35 just to keep one car offa me arse on a 2 lane road today.
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Post by xyshannen on Oct 27, 2014 1:11:18 GMT -5
I saw a video the other day where a guy's belt was riding halfway out of the variator but I think he had modified his pulley with a file if I'm not mistaken about which video it was. Exactly why in your variator mod thread, why I said how dangerous it could be to go messing with these things. My current setup goes all the way to the top with rollers. I want to try sliders just for giggles. However, now I've decided to hold off as I'm about to upgrade my entire CVT. With the issues I'm having with my clutch slipping I've decided to upgrade my clutch. I'm looking at the NCY Trans Set. Their clutch looks like it will perform better and is over 2 pounds lighter than stock. 2 pounds less of rotational mass on these little engines will make a big difference. The variator that comes with the kit is also lighter than even the Dr Pully variator. It's drive face is slot cut for cooling and even though it's 115mm it has about 1/4 of an inch of material removed from the edge but the fins (that are also much shorter than stock) still extend the full 115mm. The idea behind this is to to provide better cooling to the belt at high RPMs. It also has a few other major improvement that I'm not going to get into..it's late!  |
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Post by xyshannen on Oct 27, 2014 0:41:35 GMT -5
scooter My original setup was just like yours and had the problem. It sounds like you need a more efficient pump or, like you are saying, a different kind of pump altogether. Have you had this problem since the scooter was new? Your scooter sounds really powerful. How many cc's are you at now with that BBK? I don't know about since new. It's a 2008 and I just got it a couple of months ago. I'm the 3rd owner. But I got it with only 2k miles on it. In it's stock form, since I've owned it, yes it was doing this. It would cut out at about 45 mph. Ally makes a good point in suggesting we remount our fuel pumps lower than the tank. It's def worth trying. On my scooter that would actually take some doing. I would have to fabricate some sort of custom mount. I'm only at 155 CCs. A good portion of the power I'm producing comes from the A11 cam..seriously this cam opens the valves up almost to their max tolerances. Then having the head ported and polished further helps shovel the go juice through the motor. With the stock jets (125M/40P) on a 30mm carb I was running really lean on initial tuning and testing. |
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Post by xyshannen on Oct 26, 2014 22:44:20 GMT -5
Smoke should linger...from the video I would say that's vapor. It doesn't seem to linger, but then again it's kinda hard to tell.
A certain amount of oil from that line is normal. and looking at what your getting that looks like it has more water in it then oil.
Check your oil just to be sure you don't have water in the crank case. If water somehow gets in the crank case and mixes with the oil, the oil will look milky.
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Post by xyshannen on Oct 26, 2014 22:39:04 GMT -5
oldchopperguy Dangit Leo...costing me $ Adding a windshield to my must buy list. LOL Actually I've been looking at getting one for some time, and now that (remember it gets quit a bit more nippy up here in N FL) it's starting to cool down, I'm really thinking hard on this.
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Post by xyshannen on Oct 26, 2014 22:29:14 GMT -5
scooter My original setup was just like yours and had the problem. My current setup even did away with the shared vacuum line to the carb. I have one nipple on my intake and that powers my fuel pump, and nothing else. Now add to the mix my tunnel ram intake that actually increases velocity and should add more vacuum or at least help matters, and the problem is still present. Granted I can now go much faster at greater RPMS before it happens. Testing today showed me I can run 7500 RPMs for about 5 minutes before I cut out, and with my current setup that's cruising at a lil over 60 mph. I love this new setup...7500 rpms and 60 mph is only about 1/4 throttle @ cruising.  A regulator is designed to supply the amount of fuel needed by an engine at any given RPM. No need to reroute excess fuel because there isn't any, the pump just keep pumping regardless if it's total volume of fuel is being used or not. At worst you might get pressure buildup in the line between the pump and the regulator, But you would need to have one damn strong pump for that to be a problem. One stronger than the little pump we would use in our application. Just make sure you have line clamps on your lines and that they are in good condition and not dry rotted. rcq92130 Fuel pumps like this should be designed to handle back pressure caused by a regulator. Very few setups out there will use exactly the amount of fuel a pump provides. As long as it's within reason and fuel is actually moving through the pump it shouldn't burn up.
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Post by xyshannen on Oct 26, 2014 19:34:10 GMT -5
scooter I'm thinking the same thing. Just we have two factors to worry about, 1 the pump not providing enough fuel, 2 The pump pushing too much fuel. The second is actually the easiest to deal with. A simple in-line fuel regulator should solve the problem. But until one of use attempts this upgrade wee just don't know what's going to happen. At 20-30 gph the pump rcq92130 linked should be more than sufficient. rcq92130 I never really trust stats on anything I buy from the bay. They are often either inflated or reduced, depending on what makes said product look better to the consumer. If I were you I would test the new pump prior to installation. Get a bucket and an empty gallon milk jug and see how long it takes the pump to fill the jug. Then calculate the pumps actual gallon per hour rating.
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Post by xyshannen on Oct 26, 2014 18:12:45 GMT -5
Different bikes at different sea levels respond differently. The HP your engine creates has an effect on when this happens. For instance, my stock bike did this if I went at 45 MPH for more than a few minutes. Then I added a performance cdi with hot coil and an iridium plug, a high flow exhaust, and a high flow air filter setup. I was then able to do 50 MPH all day but at 51MPH I would start cutting out. Now with my current setup I can run 60 mph at a much higher RPM before this happens. If I go to a heavier roller weight in my variator I should be able to cruise at a higher speed at a lower RPM before it cuts out.
Some members say replacing the fuel pump with a better one will fix it. One has had success. I'm waiting to hear if the another member has success before I try it. My thoughts on this fix is, if it's a vacuum problem then putting on a better vacuum powered pump wont fix the problem. I'm thinking nothing short of relocate your fuel tank to above the carb or adding an electric pump will fix the problem.
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Post by xyshannen on Oct 26, 2014 13:44:18 GMT -5
I just got back from a joy ride, and along the way I got the idea to see what was the most enjoyable speed for me to go to get the most out of my ride. For me, I found that 35 mph was perfect. Wind noise is at a tolerable level, I don't get knocked around by cross winds, and I really get to relax and enjoy the scenery.
Wile I do like going fast, it's not my ultimate goal in life. The mods I've done to my engine are not so I can see how fast and how hard I can push my bike. I did them so when I encounter an idiot driver I have the power to get out of the way.
So the question goes, what speed do you get the most enjoyment out of your ride and why?
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Post by xyshannen on Oct 26, 2014 13:31:16 GMT -5
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Post by xyshannen on Oct 26, 2014 10:49:12 GMT -5
Great views! Ugh I wish there where more places like that here. As it is, there's only one place I can go to the has vehicle access to the coast like that. It's one of the last beaches you can drive on in FL. Some years ago we had an accident where someone drove over a sun bather and killed her. So they shut down most of the beaches you can drive on. The one that is left, sadly the sand isn't very accommodating to small tires. Not to mention it tends to be packed with bubba trucks and drunken rednecks.
I still love your girl in her pink getup. She looks like a member of some Pink motorcycle gang.
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