Troy
Scoot Junior
Posts: 19 
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Post by Troy on Mar 5, 2013 21:06:53 GMT -5
Hello, When I bought my scoot I was told by the dealer that the variator washer has been removed. However I just watched 90gtvert's awesome video - Scooter CVT Transmission : Full Service Inspection and at around 3:40 in he shows where there is a variator washer that sits in the recess between the fan side of the variator and the drive boss. Mine still has that washer in place. When I originally researched the variator washer used for restricting these scooters I came across the below image showing a washer that instead of being between the drive boss and the variator seems to fit over the entire drive boss. Mine does not have this one in place and I assume this was the one that the dealer removed.  So should I be removing the washer shown in 90gtvert's video as well? Looking at the markings on the variator I still have around 4-5mm of "unused" travel remaining. Cheers, Troy |
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Post by teddy554 on Mar 5, 2013 21:19:58 GMT -5
That is a spacer or shim it is used has a tuning tool for the cvt, the image is the restrictive washer
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Troy
Scoot Junior
Posts: 19
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Post by Troy on Mar 6, 2013 1:02:49 GMT -5
Ah, thanks ted its all starting to make sense now. I'll remove it and as long as it doesn't affect the take off speed too drastically i'll leave it out. Most of my daily commute is at WOT so it would be nice to squeeze out a extra little top end speed.
Cheers,
Troy
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Post by ʇwiƨtɘdburnout on Mar 6, 2013 1:26:24 GMT -5
Man I never even looked in that spot, only in the middle like the picture. Would I have to "pop" the washer out? Or would it just fall when I remove it?
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Troy
Scoot Junior
Posts: 19
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Post by Troy on Mar 6, 2013 1:48:19 GMT -5
Mine just fell out when I pulled the outer half off.
Cheers,
Troy
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Post by ʇwiƨtɘdburnout on Mar 6, 2013 1:49:51 GMT -5
Right on, thanks!  |
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Post by aznatama on Mar 6, 2013 4:11:54 GMT -5
That is a spacer or shim it is used has a tuning tool for the cvt, the image is the restrictive washer What the... I never knew that. I always thought the restrictive washer was an actual washer, not a collar. (to me, washers are flat). My scooter had a "spacer" which I always called a washer, and removing it would've given me more top speed if I didn't change out the entire variator. I guess things are called differently in the scooter world... |
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Post by teddy554 on Mar 6, 2013 6:00:00 GMT -5
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Post by 90GTVert on Mar 6, 2013 10:09:26 GMT -5
The washers that are right under the fixed half are still called restrictors by many. I found that with a stock setup it was just a spacer. Any time you put a washer on with a larger diameter than the boss it would be a restrictor... restricting movement of the variator past the larger washer... but when it fits into a groove in the stock pulley it's really more of a spacer. I found that removing the washer on my 49cc did nothing for speed, but killed takeoff thanks to the belt riding higher in the front pulley at launch (sorta like taking off in the wrong gear). Some people report picking up speed without the stock washer.
If you have something like shown in the pick at the top, that's definitely a restrictor. Some have a drive boss that is machined with a larger diameter at the end as a restriction as well and the drive boss has to be cut down in a lathe to a uniform diameter or replaced.
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Troy
Scoot Junior
Posts: 19
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Post by Troy on Mar 6, 2013 10:34:15 GMT -5
Thanks all, I pulled this washer off tonight to see how it would go. I did have to put the washer on the outside of the variator fan under the kickstart sprocket otherwise I could not tighten the assembly completely (the keyways on the crankshaft would foul with the securing nut/washer before the variator was hard up against the drive boss).
I had pretty much the same as result as Brent, I noticed that my belt was no longer riding as high on the rear pulley and took it for a spin and noticed that it seemed to rev a bit lower and bogged down a bit from a standstill trying to haul my fat ass around.
I did get my best downhill speeds around a 4km/h faster, though on the flat my opinion was that it was slightly worse.
I set it back to stock for now, maybe i'll give it another go once I get my BBK.
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Troy
Scoot Junior
Posts: 19
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Post by Troy on Mar 6, 2013 11:01:59 GMT -5
I took a few photos tonight, here they are incase anyone is interested what comes with this Stock MCI (Longjia) SpeedJet 50. Variator bits:  Closeup of the Washer (Shim):  Variator showing ramps - this is stamped "Jog 90":  Stock rollers seem to be 5g according to the wife's kitchen scales:  Forget Mitsubishi - this ones a Mitsuboshi baby! 16.6 x 792 drive belt:  Belt riding low in the rear pulley after removing the washer:   Cheers, Troy |
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Post by sideways on Mar 6, 2013 11:45:37 GMT -5
Interesting. From what I've read, mine has 6.5g rollers. I'l have to pull it apart and have a look! Mitsuboshi. Haha. |
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Troy
Scoot Junior
Posts: 19
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Post by Troy on Mar 6, 2013 11:54:27 GMT -5
Yeah mate I had a good chuckle at that drive belt.  The scales might not be spot on (she can make a mean cake with them though) although I did put all 6 on there and got 30g Cheers, Troy |
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Post by 90GTVert on Mar 6, 2013 11:55:35 GMT -5
My Keeway had a Mitsuboshi belt stock as well. Same one. I replaced it with Bando 788 17 28s since and they work well. The stock belt seemed fine, but they're harder to find and I've had good experiences with Bando belts at reasonable prices.
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Post by aznatama on Mar 6, 2013 22:38:57 GMT -5
Mitsuboshi. Haha. Not sure what's so funny... FYI, mitsuboshi is a well known and one of the largest manufacturers of drive belts, producing OEM timing belts and accessory belts for car manufacturers such as Toyota/Lexus, Subaru, etc. The real question is whether these are genuine Mitsuboshi belts or not, coming from China and all... |
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