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Post by tsimi on Dec 2, 2014 6:24:47 GMT -5
Thanks for your help and info.
Today it is freeeezing cold and dry.
On the way back home my scooter drove fantastic! Not perfect but way better than yesterday. No clue why though. Maybe the new Vario needs a few runs first before it can unfold it's true nature.
Next time i get the chance i will try to add a 0.3mm or 0.5mm shim/washer and go with a 3x 5g 3x 5.5g setting. I hope to get good takeoff and a bit less top speed.
I'll report back asap.
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Post by tsimi on Dec 3, 2014 7:04:23 GMT -5
Just saw 90GTVert's Video where he tests few Varios and setups.
In the first video he has a
Malossi OR Kit
68cc BBK
Crank
Reeds
Carb
LeoVince Exhaust
and he reaches max. 9200-9300rpm at 50mph(80.467kph). Average 0-40mph(64.374 km/h) was 11.48s.
I am a bit surprised because Ulysse told me that i reached 0-60km/h in 9.06s which would be very fast in this case. And I haven't added the extra Shim yet.
And I reach Top Speed 77km/h(47.846mph) at max. 8200rpm (before the OR Variator i used to reach 9200rpm.)
Kinda confused now. How can a stock 50cc scoot be faster than this amazing $$$ setup from 90GTVert. Is it because I'm lighter? (body weight) Or is Ulysse telling me BS?
Did another test today by just counting in my head...21,22,23,24,25....again around 9-10 seconds from takeoff to over 60km/h.
Today again on my way home....fantastic condition. Good takeoff, great response, good top speed...can't wait to add another 0.3 or 0.5mm shim.
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Post by 90GTVert on Dec 3, 2014 9:24:35 GMT -5
You must keep in mind when looking at my timed runs that I am 300 pounds. Basically you'd have to put another person on your scoot with you to compare times. The weight makes a huge difference. When my lighter friends have rode my scoots it's totally different than when I'm on them.
If you can get the idle mixture screw in tune so you have a good idle, I wouldn't worry about the pilot jet at this point. Also, try to stick with 1 change at a time to help you figure out exactly what is getting you the results you want or changing things for the worse.
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Post by tsimi on Dec 3, 2014 10:05:15 GMT -5
WOW, 300 pounds!? Man you are huge! Almost double my weight. Well, then the results make sense. I have no confidence to touch the carb screws. If i should mess up i'm screwed. I read a tutorial but can't understand it. 49ccscoot.proboards.com/thread/429Step 3 & 4; Turn the screw clock wise then counter clock wise or something like that. |
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Post by 90GTVert on Dec 3, 2014 10:28:06 GMT -5
Adjusting the mixture and speed screws is easier than swapping pilot jets and even if you swap pilot jets you will prob need to adjust the mixture and speed screws. If you count the amount of turns on each from where they are to seated and write it down, you can always go back to where you started.
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Post by tsimi on Dec 3, 2014 11:03:44 GMT -5
So with which screw should i start first? The idle screw or mixture screw? That part is the most confusing for me.
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Post by 90GTVert on Dec 3, 2014 12:28:52 GMT -5
The idle speed screw is just about keeping the engine at a reasonable idle speed so it's not dying out and not taking off or revving high for no good reason. Just use it to maintain your preferred idle speed and otherwise focus on the mixture screw. I find it best to let the idle speed change a bit, but just keep it safe when adjusting the mix screw. That way I can see what the changes in mix are doing to RPM. Whenever I'm happy with it, then I'll set the idle speed with the exception of big swings in idle RPM. If RPM changes a lot then I keep it in check as I go.
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Post by birdman on Dec 3, 2014 13:53:41 GMT -5
It can be a daunting task at first, but once spend some time with it, you will get the hang of it, and it will almost become second nature after a short while.. If your like me it may get the point of carrying around a very small screw driver on your keychain, and making small adjustments at the stoplights while riding  You have to do what you have to do to get that bike dialed in LOL |
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Post by niz76 on Dec 3, 2014 14:09:13 GMT -5
For a little while I had the tension on the throttle cable just right so I could tweak the idle speed a bit at stoplights just by threading/unthreading the adjuster at the handlebar... Eventually I got good at tuning the idle so I didn't need to do this anymore!
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Post by birdman on Dec 3, 2014 14:24:49 GMT -5
Indeed I am still a rookie myself, I have only been scooting for a little over 1 year and a half.
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Post by tsimi on Dec 3, 2014 20:02:44 GMT -5
90GTVertThank you for your explanation. Now everything is clear to me. And thanks for your patience. I am sure it is hard sometimes to explain such things to noobs like me over and over again. niz76My adjuster at the handle bar has a stupid rubber around it. Tried to pull it off but it won't budge. But now that i understand how to adjust the carb i will do the necessary settings there. birdman-san I always carry two small screw drivers (+ & -) on my key chain and even a mini roll-up tape measure (max. 1m) the thing is to get access to my carb or the carbs screws i have to remove the seat unit and also the air filter box and the side panel. If i would have a naked bike or like Brent has, a stripped down scooter version, then that would be no problem. But i need to ride every day no matter if raining (like today) or snowing or typhoon, that is why i need to keep the panels in place to protect the interior.
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Post by tsimi on Dec 9, 2014 22:48:31 GMT -5
A new day and new problems arise. The last time I touched my scoots CVT was around Dec. 2nd. Yesterday i did a super tiny small adjustment on the idling screw (turn it approx 2-3mm clockwise to raise the rpm) and that's it. As you can see in my post from Dec. 2nd i had a more or less good running scoot (finally!) till today. My working place is a bit up the hill so i have a good chance to test my scooter on a hill, downhill and on a flat straight. When climbing the hill even with fast speed (approx. 60km/h) from the flat straight my scoot looses power and i mean really a big loss of power. It won't rev higher then 5800rpm and going (if I'm lucky) approx. 40km/h the engine sound is terrible like it's going to die on me or something like that. I have a yellow torque spring inside and it was all good even with the new Variator. I really don't understand the world anymore. Just when i thought that i finally got it good running shit comes raining down on me wtf?  It's like the scooter gods don't like me. I guess i have to revert back the steps starting with the main jet. |
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Post by Clank on Dec 10, 2014 5:29:24 GMT -5
Do you have a vacuum asst petcock? If so you might want to change it to a standard petcock. You lose vacuum at WOT which could mean you're petcock isn't opening all the way thus creating a fuel shortage to the carb and engine.
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Post by birdman on Dec 10, 2014 5:48:56 GMT -5
"The tuning woes"
Hang in there tsimi-san, patience is key
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Post by tsimi on Dec 10, 2014 7:29:47 GMT -5
Clankthanks but i don't think that my scoot has a petcock that can be manually adjusted. Looked inside the engine area but can't see anything that looks like a petcock. birdmanGanbarimasu! I am looking soooo forward to my second Jog that i should get during the end of year holidays. Then i can just quickly swap the whole Clutch or Variator without taking too many things apart. One clutch with stock setting one with the harder torque spring. Is any of you guys coming to Osaka over the holidays? Would be awesome if one of you Pros could take a look at it. *bigwish*
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