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Post by viciousharp on Oct 18, 2013 21:35:08 GMT -5
Okay guys. I have purchased and installed a new belt. I went with a cheap because I knew I would probably mess something up. So I put the belt on and the variator was very hard to remove and to put back on. It's not the splines its the metal piece that goes on top of the rollers it will barely go on the crank and takes some tapping to get it on. Now that I have everything on the belt is slapping and making all kinds of racket. I have uploaded a video of what it is doing so that everyone can see. I know nothing about these so any help is greatly appreciated!
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Post by festus on Oct 19, 2013 20:38:24 GMT -5
It looks and sounds like it may be set to idle a little bit fast which could be causing it to just barely begin to engage at idle speed. What happens when you rev it ? If it smooths out and works fine then I would suggest slowing the idle a tiny bit. I always heard to set the idle to the point that the rear tire has just stopped turning. Warm engine idle of course.
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Post by Deleted on Oct 19, 2013 22:16:19 GMT -5
But when you do that the dang thing revs up over 4000 rpms on a cold start!
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Post by viciousharp on Oct 20, 2013 7:35:38 GMT -5
I'm not as much worried about the idle as the belt slapping around it does smooth out when I speed up but it shouldn't be vibrating and making all that noise at any point should it? And should my variator be so impossible to put in or take off? I had to tap it on with a hammer
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Post by Deleted on Oct 20, 2013 11:47:56 GMT -5
You should simply slide it off and slide it on...How about a video from another ange to see if theres any side to side wobble.
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Post by viciousharp on Oct 20, 2013 19:41:20 GMT -5
I will post another video everything slides on except for the piece that sits on top of the rollers and has the three rubber pieces on it. Would the variator being bad cause the belt to flop around? It makes a lot of noise too but all goes away once the revs get higher
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Post by Deleted on Oct 20, 2013 19:52:07 GMT -5
Those allow the plates to separate allowing the rollers to open it. Thats an issue. You can buy those little pieces. Id replace them.
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Post by viciousharp on Oct 20, 2013 20:08:20 GMT -5
The piece sticks not in the rubber but on the crankshaft itself. It is the plate on top of the rollers and it gets stuck on the crankshaft
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Post by alleyoop on Oct 20, 2013 20:26:13 GMT -5
Sometimes because of the heat created the Variator Plate which you are talking about sticks to the Crankshaft. Reason is the Heat Expands the Crankshaft and it tightens up inside the hole of the Plate. But when cold the Variator Plate should just slip right onto the crankshaft. I noticed that at IDLE the Belt is down about 1/2 inch in the CLUTCH PULLEY, that is probably why the belt is slapping around. The Contra Spring is weak and not putting enough pressure on the belt allowing the belt to drop down and not strong enough to keep it up near the edge of the Clutch Pulley Plates. Since the Belt is all the way down in the Variator and Some down in the Clutch Pulley you have some Slack in the belt and it will act as if the belt is to big and slap around. Alleyoop
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Post by viciousharp on Oct 21, 2013 21:54:13 GMT -5
Alleyoop you are a gentlemen and a scholar! I didn't know the belt should be on the edge of the clutch. Also the variator plate is very hard to put on and off my crank shaft hot or cold. Is it okay to take a file to the hole in the plate and try to loosen it up a bit? Or should I just buy a new variator? Also I want to go ahead and replace the variator weights. What is a good weight to put on the 250 scooter? Also any help finding a place to purchase a contra(torque) spring would be a great help. Everywhere I look has these stiffer aftermarket ones that it says will hurt my top speed which I do not want. I'm just clueless as to what rollers and clutch spring to buy to make this scooter perform well at higher speeds. The reason I bought it is that most of my commute is 45-60mph over hilly terrain and I'm having to run my 150 wide open most of the time to make the commute and hang with traffic.
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Post by alleyoop on Oct 21, 2013 22:54:04 GMT -5
The OEM contra springs are usually rated at 700-800 so putting on a 1000 rated contra spring will not actually help you on the hills as far as weights to handle the hills good you want lighter weights. You need to find out what your current weights weigh they are probably to heavy and lower your rpms which you need on the hills. So if you do not have a small gram digital scale take the variator off and take a weight to the post office and have them weigh it then we can work from there. Also do you have a tach on the scoot and if so what is your current RPMS at top end speed and or around 50mph and 60mph. I would bet going up hills your RPMS are dropping and your speed then drops to much. The best setup you want is say hit the bottom of the hill at say 50mph and going up the hill you do not lose rpms just mph. And let me say this you should have more throttle so if the mph are dropping to much you can crank up the throttle for more rpms. Alleyoop
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Post by viciousharp on Oct 22, 2013 18:28:47 GMT -5
I'm not so much worried about the hills as I am top speed I will way my weights at work tomorrow and let you know the weight. Are heavier weights better for top speed?
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Post by alleyoop on Oct 22, 2013 19:33:58 GMT -5
Heavier weights make the Variator squeeze more and therefore push the belt up higher on the variator which in turn creates a bigger wheel turning a smaller wheel when the belt is down in the clutch pulley.
BUT there is a catch, Heavier weights will also bring down your rpms so TOO heavy of weights you may lose to many rpms and may cause you to lose top end. So you have to find the weights that will give you good rpms and at the same time have the belt climb as high as it can with the matching rpms and weights.
So it is a trial and error finding the right set of weights which will give you what you want and every motor produces different hp so that comes into play as well. Alleyoop
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Post by viciousharp on Oct 23, 2013 7:24:28 GMT -5
Alleyoop you've been a huge help and I really appreciate it!
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Post by nulldevice on Nov 28, 2013 21:13:45 GMT -5
From the video it looks to me like your belt is the wrong size.
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