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Post by nulldevice on Jul 30, 2012 15:34:27 GMT -6
If there is no significant change with the balancing beads for your front tire it is probably out of round and needs replaced -- even if it is brand new. You can perfectly balance a square wheel but it will never roll smoothly. Check the wheel for out of round at the bead and run-out as well.
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Post by nulldevice on Jul 29, 2012 20:45:11 GMT -6
If it doesn't say silicate free it probably isn't. Otherwise why would some brands bother to mention they are silicate free? You can go ahead and risk your motor's longevity on "most" and "probably" but I won't.
As you said, read the label and look for words indicating it is silicate free. I have a jug of full strength Prestone that has silicates, and a jug of 50/50 pre-mixed Prestone that doesn't.
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Post by nulldevice on Jul 28, 2012 18:14:07 GMT -6
Disconnect the diode and use the ohms setting on your meter. Take two readings, one forward, one reversed with your probes. You will get a reading one way and not the other if the diode is good.
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Post by nulldevice on Jul 28, 2012 18:10:32 GMT -6
Here's a good replacement fan that may save you a couple of amps in power: www.siliconeintakes.com/product_info.php?cPath=15&products_id=1024&osCsid=2bf68d71e32fe413cbb745cbd96ddb55There really is no work around for the restricted air flow problem short of adding an additional auxiliary radiator in front of the gas tank. Most of the overheating issues with the 250cc class of scoots can be traced back to poor maintenance of the cooling system and problems after refilling the cooling system. If the scoot has been sitting a while, then it is important to drain and flush the cooling system. The passages are small and can easily by blocked with corrosion and foreign matter. A good quality 50/50 premix antifreeze should be used for the refill. Sometimes air trapped in the system can cause overheating and it can take several heating a cooling cycles to "burp" or remove any trapped air. This can be monitored at the overflow or expansion tank. Once the level remains constant when checking cold, the system should be free of air. You can then determine if the scoot really has over heating problems after the cooling system has been properly serviced. More than a good quality andifreeze. Make sure it is for aluminium engines and is silicate free. Silicates will destroy the water pump seals and the wrong chemistry can destroy the radiator and motor. |
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Post by nulldevice on Jul 24, 2012 21:03:33 GMT -6
After many days I have found the noise sources. Note the plural. 1. Loose carburetor mount hose clamp caused the sucking whistling noise and the carb bowl knocking on the motor mount. 2. Idle slightly too high and making the clutch bell wiggle back and forth at idle. 3. Contaminated and glazed clutch shoes caused chatter at take-off 4. Destroyed rear caliper mounting bushings caused a horrendous high pitch rattle at all speeds 5. The guts of the muffler were loose and rattling around inside. These scoots are such fun. It has been too hot to ride much lately and it kept me out of trouble and entertained in my basement.  |
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Post by nulldevice on Jul 24, 2012 13:23:25 GMT -6
Cam chain tensioner is automatic.
Check out the callipers. Grab them and try to shake them in all directions. If one or both rattle you've found it. The rubber calliper mounting bushings are worn out or missing.
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temp. gauge
by: nulldevice - Jul 14, 2012 10:08:13 GMT -6
Post by nulldevice on Jul 14, 2012 10:08:13 GMT -6
Bad gauge and/or bad sending unit. Since there is no guarantee the replacement parts would be any better. I mounted a digital gauge with the sensor epoxied to the radiator tank where the radiator inlet hose comes in after I put the sensor in a pan of boiling water to see how far off in what direction it was.
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temp. gauge
by: nulldevice - Jul 12, 2012 17:11:08 GMT -6
Post by nulldevice on Jul 12, 2012 17:11:08 GMT -6
My Internet search found the following information.
The thermostat doesn't start to open until about 160 - 180 degrees and isn't fully open until somewhere around 200 - 210 degrees.
If you have a 50/50 antifreeze mix and your pressure cap is working correctly the antifreeze won't boil until somewhere around 260 degrees or so.
Motor oil is good up to about 250 - 260 degrees maximum. Yes, these are maximum antifreeze and oil temperatures and that is when you take steps to cool the motor down a little bit.
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Post by nulldevice on Jul 7, 2012 19:41:21 GMT -6
Anything is possible but I doubt it with all new components. You should refer to the Reflex manual for installation instructions. What is your bike doing? Heating problems can be many things including thermostat or fan. Rich Yeh, and don't forget the wildly inaccurate gauges these scooters have as well. I chased an overheating problem for 1 1/2 riding seasons that didn't exist. Get a "laser" thermometer and check the head, thermostat housing, and radiator tank near the inlet temperatures. |
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Post by nulldevice on Jun 21, 2012 17:40:39 GMT -6
My cars get 25-30 MPG and my scooter gets 60-90 MPG. If I want to run errands and fuel cost is an issue I use the car. Somehow the distance my scooter has to go is about 4-5 times farther than when I drive the car. To do the same thing on the scooter I wind up using more gas.
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Post by nulldevice on Jun 14, 2012 16:04:32 GMT -6
Clarify the notch for us -- is the high notch the one towards the bottom of the needle or the one towards the top of the needle?
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Post by nulldevice on May 31, 2012 10:10:51 GMT -6
The ten inch tire on the back of my 250cc SunL is a 120/90 - 10. In imperial units that is about 4.75 inches wide, a 10 inch rim, and a cross section profile height of about 4.25 inches. It is considerably bigger than a 3.50-10. My search of the Internet (multiple sites) claims the back tire size was 120/90 - 10 from the beginning. If you saw them with 3.50 10 inch tires on them they were probably replacement tires.
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Post by nulldevice on May 26, 2012 21:00:49 GMT -6
It has taken some moderate wrenching and serious wire pulling to get there, but my SunL 250 scooter went over the 10, 000 mile mark last week, but it took me two years to do it. It is finally running like I thought is should when I got it.
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Windshield?
by: nulldevice - May 24, 2012 20:20:25 GMT -6
Post by nulldevice on May 24, 2012 20:20:25 GMT -6
I make my own out of 3/16 inch Lexan sheet. No question about fit then.
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No Comment
by: nulldevice - May 24, 2012 10:04:59 GMT -6
Post by nulldevice on May 24, 2012 10:04:59 GMT -6
Not just any scooter, Rich. One with a 10 inch rear wheel. My wife just smoked off her rear tire on the Rebel at 5200 and the front is on the wear indicators at 6,000. It's an 18 inch wheel front, a 15 rear and a Bridgestone to boot. Plus his and her injuries indicate a lack of headwear to me. I won't ride my bicycle without a lid, much less a 70 mph scooter. Oops. I guess I did comment. The ten inch wheel is a non-issue. A ten inch wheel with a high profile tire has nearly the same diameter as a 13 inch wheel with a low profile tire. |
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