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Post by renners on Oct 16, 2014 12:33:21 GMT -5
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Post by moofus02 on Oct 29, 2014 8:34:23 GMT -5
Just watched your video. Not sure of the nose you are talking about. If you think it is from the cvt pull the cover inspect variator guides support bearings etc see if there is anything obvious
Sent from my SPH-L720 using proboards
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Post by Sitticuss on Oct 29, 2014 8:50:20 GMT -5
check the variator ^^^^^
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Post by 90GTVert on Oct 30, 2014 9:12:48 GMT -5
Some rattles can be easily worked out by putting pressure on a part to see if it stops. For example, put pressure on the CVT cover and see if the rattle ceases. Hold the kickstart and see if it still happens. Obviously you can't do this with moving parts, but start with the easy stuff if you're totally unsure of where the sound originates. If you pull the cover off look for signs of contact anywhere.
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Post by chehystpewpur on Oct 30, 2014 17:04:04 GMT -5
A good possibility is the starter clutch I hear those are pretty noisy on our bikes and also check the variator guides. I've always worried every time my guides start to wear because it picks up a rattle but it always ends up being those or the weights rattling around in my variator especially at idle.
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Post by jhobe6678 on Oct 30, 2014 17:35:44 GMT -5
I had a mysterious noise coming from my engine too. It sounded like it was coming from the Stator side, but thanks to Dave it turned out to be the Variator. It was shortly after I got my scoot and I wasn't really 100% in what I was doing. I took the variator apart and thought I put it back together right. Seems that I bolted the drive face and all back on with the belt down on the boss. The belt was stopping everything from coming together all the way slightly, thus leaving my variator a bit loose? At least that's what I think happened. The result was the drive face was loose and the star key (that piece that sits in the grooves of the variator drive face, behind the kickstart pawl) wore the grooves wider and the star itself was worn a bit too. I can show you pictures if you'd like to compare what it shouldn't look like lol. Dave fixed it for me, but I ended up replacing the whole variator anyways. This time whenever I take it apart, I always put it back together with the belt off the variator. I then put the belt back on using the method of holding the clutch pulley open, letting the belt ride as far down the pulley in the back, even putting my fingers around it to squeeze it down more, then I slide the belt over the variator drive face, rotate it a little and it guides itself back on. We used to do this years ago on cars when you were putting a tough serpentine belt or any other belt on that you didn't have a tensioner pulley for. You wedge it on with a screwdriver and tap the ignition on the engine to slip the belt all the way on. Not a highly recommended method if you don't' know what you were doing, but I watched my dad do this numerous times and he had all ten fingers till he passed away. There was an episode with a spring compressor though... Which scares the ever living  out of me and the reason why I will not do my own suspension on a car. |
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Post by chehystpewpur on Oct 30, 2014 19:28:08 GMT -5
I usually open the torque driver and slide the belt in then put the variator on so I don't have to worry about bending the crank. Usually with a broken in belt its tacky enough to keep from slipping out long enough to get it bolted up. Aslong as its treated you good that what matters but I had a 4t with a slightly bent crank and it was an ever living something to say the least.
Spring compressors btw scare the # outta me. I put a set of lowering springs on before and had to use one. Thats why I firmly believe now lowering springs are the only springs. Usually they are short and stiff enough a compressor is never needed again lmao. I could just loosen things and the spring could rattle around well before I ran out of threads. On that car I never even replaced the stock shocks because the springs were so stiff it rode better with bad shocks. They had a progressive coil design too so it had a good ride and when you hit a corner and it compressed the body wouldn't even roll. It would lift a wheel off the ground before anything. Best 164 dollars I even spent.
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Post by Fox on Oct 30, 2014 19:58:15 GMT -5
Everyone is talking about the CVT but I am almost certain I hear the wrist bearing getting ready to grenade. I had a couple fail and they both started making noise for some time before they broke to bits and ruined the pistons.
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Post by chehystpewpur on Oct 30, 2014 20:32:41 GMT -5
What did it sound like? And what did you do to make them fail? I had one that started to but it didn't make a sound really. Was it maybe detonation from too low of an octane fuel?
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Post by Fox on Oct 30, 2014 22:12:33 GMT -5
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Post by renners on Oct 31, 2014 4:39:28 GMT -5
Hi guys the rattle only happens when I let go of the throttle... The variator is pretty shook I'm keeping my eye out for a cheap one
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Post by chehystpewpur on Oct 31, 2014 7:18:22 GMT -5
Thats kind of what mine did when the variator guides were bad. The back plate would rattle back and forth on the power strokes and the weights would bounce around. Also if your belt I thin it doesn't act as a spring and keep the 2 halves pushed apart and can let it rattle a little too. Can you measure the width of your variator? I have a small one from parts for scooters. If your bike had the small size one it could be boxed up for ya. I could only do about 45-48 tops with it if that sounds about like your top speed. Its basically brand new.
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Post by renners on Oct 31, 2014 8:19:10 GMT -5
Yeah my belt is only 13mm thick.local motorcycle shop got my order in today so I'll be going to get it tomorrow
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Post by chehystpewpur on Oct 31, 2014 9:36:39 GMT -5
That could have something to do with it as well. Hopefully the belt and a new variator cures your issues. I gave up even diagnosing rattles on my bike because it has so many miles it seems like every time it stopped rattling I have an issue lol.
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Post by renners on Oct 31, 2014 11:09:30 GMT -5
Well theirs about 26000km on mine lol. How much do you think a new variator would go for ?
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