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Post by xylon on Oct 26, 2014 6:04:06 GMT -5
I'm in the South, so I'm not far from London. There are lots of scooters in London due to the £10/day congestion charge on 4 wheelers and the fact that scooters can filter through the traffic.
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Post by xylon on May 19, 2014 5:51:01 GMT -5
Over a year later I have finally solved this problem. The back tire the dealer put on the scooter was WRONG. Too low profile. Obviously this effectively reduced the gear ratio of the scooter. I just fitted the correct tire and now it can do 69 speedo indicated.
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Post by xylon on Sept 17, 2013 7:03:27 GMT -5
Opened up the transmission this morning. Turned out I didn't need to remove the floor panel. I could get it of by taking all the panels off the rear of the scooter, the belly panel, the left hand passenger footrest and the air filter. Possibly didn't need to remove even that much but it might be hard if I didn't.
ANyway; it turns out it was just the drive belt squeaking on the pulleys. Drive belt is about 2000 miles old, width measures within the service limit, drive faces clean. No foreign bodies in there. I guess it's fine.
Celebration? ^)
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Post by xylon on Sept 16, 2013 14:46:28 GMT -5
"The knee bone's connected to the...."  How are you accessing the variator nut if you can't get the transmission cover off? Maybe we have a terminology disconnect. It may also depend on which type of motor you have. Which model scoot is this? Is a Honda PS125i and there is a plastic cover containing a sponge air filter over the variator (since the variator has a centrifugal fan on the back). That's how I can access the variator nut. On most GY6's the CVT "transmission" is on the left side and can only be accessed by removing the entire cover. (unless you have some sort of mini access panel that you can stick a wrench through?) The engines rotate forward, (anti-clockwise from the left) to drive the variator pulley. The "transmission" consists of two pulley assemblies and a belt The reduction gearing "transmission" is in a small compartment near the rear wheel and has a couple metal gears and layshafts. None of that should be moving while rotating the engine by hand. Correct, none of that rotates because the centrifugal clutch is disengaged. Which "transmission" case are you referring to? The sprag clutch shouldn't make any noise when turned in the correct direction. Certainly not like this. Unless it's completely jammed and you're constantly driving the starter motor. (Hard to imagine it would run that way.) As best I can tell the sound is either squeaky or grating, and relatively high pitched. Metallic? Does the motor run this way? It sounds metalic. Yes the engine runs totally fine I did 26 miles yesturday. The noise disappears when I start the engine. If it's squeaky could it be the belt rubbing on the pulleys? Could there be something floating around inside the CVT cover that the variator pulley is rubbing on? If it's grating, could there be an issue with the timing chain? Maybe the guides are worn through? Whatever it is it can't be good. I noticed the transmission cover gets quite hot (feels about 50'C). Is this normal? The centre of the heat is over the centrifugal clutch. I'm wondering maybe the clutch nut fell off and the clutch drum is only being held on by the case, constantly scraping? |
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Post by xylon on Sept 16, 2013 7:59:01 GMT -5
OK I just verified anti-clockwize is the normal direction of engine rotation. Then I tried turning it as fast as I can with the spark plug removed and it still makes the sound so I guess my theory is wrong.
Actually I think the sound is coming from inside the transmission case itself. But on this scooter you can't remove the transmission case without removing the floor panel and you can't remove the floor panel without removing the inner front panel, belly panel and body panels and you can't remove the inner front panel without removing the upper front panel and you can't remove the upper front panel without removing the front handlebar cover and you can't remove the body panels without removing the centre panel, storage box and luggage rack and you can't remove the storage box without removing the seat. So to open the transmission case is like a two hour job, and another two hours to put it back together again.
If it's coming from inside the transmission case is it something to worry about?
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Post by xylon on Sept 16, 2013 6:37:45 GMT -5
Maybe I'm turning it in the right direction but the sprag clutch provides a small amount of engagement in the reverse direction at low speed. I haven't looked at the clutch but wikipedia sais: `The sprags are spring-loaded so that they lock with very little backlash.' so maybe the small pressure of the springs is enough to turn the starter gears at low speed?
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Post by xylon on Sept 16, 2013 6:26:16 GMT -5
So I'm turning the engine in the wrong direction? My manual says to turn it anti-clockwise (when adjusting valve clearances).
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Post by xylon on Sept 16, 2013 4:59:43 GMT -5
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Post by xylon on Jun 3, 2013 10:08:25 GMT -5
My speedo reads 7% high with Continental tires.
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Post by xylon on Apr 20, 2013 4:52:04 GMT -5
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Post by xylon on Apr 15, 2013 8:22:18 GMT -5
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Post by xylon on Apr 11, 2013 13:50:34 GMT -5
West Sussex, England
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Post by xylon on Apr 11, 2013 13:29:31 GMT -5
Yeah, the more the better. I think there should be a section for Honda PS125is.
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Post by xylon on Apr 10, 2013 4:13:27 GMT -5
hm so is it safer than a two wheeled scooter?There's lots of potholes where I live.
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Post by xylon on Apr 9, 2013 16:21:11 GMT -5
I think there's a little hole in the cap of the fuel tank to let air in as the fuel gets used up. Otherwise the fuel tank get a suction in it that stops fuel getting pumped. So it could be blocked maybe.
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