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Scooters - 50cc => Agility 50 => Topic started by: wordslinger on May 11, 2010, 01:41:31 AM

Title: ..20 mm carburetor..
Post by: wordslinger on May 11, 2010, 01:41:31 AM
...i don't know where to start, really....

..i'll just say that the wait and the worry were worth it all...

..you guys might want one of these....

 :o

peace
Title: Re: ..20 mm carburetor..
Post by: Shaka on May 11, 2010, 02:13:30 AM
That's all we get?!  No pics or nothing?!  ??? >:(
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 11, 2010, 02:32:46 AM
...i broke my cam th other day....

...but this is one of the best purchases i've ever made for my scoot's performance....

.. i'm jetting at 60 degrees...had to increase the stock 95 jet up to a @ 101.5 jet right off th' bat....

..2 chops got me there...

..it's gonna be a bit lean in th' mornin's 45 degree ride to work, but i do believe i'm in the zone...

..may have to go up 1/2 to one more size....but the increase in hp is already apparent...


..i'm happy.......again...

  :o
Title: Re: ..20 mm carburetor..
Post by: zombie on May 11, 2010, 03:55:25 AM
Broke your cam? AND your happy? The Carb. I get! ?????????
Title: Re: ..20 mm carburetor..
Post by: Shaka on May 11, 2010, 04:03:37 AM
Dang, what's the deal with the cam?  Darn, 4-strokes again! ;)
Sounds like you''re having fun with the carb!  You'll have to give a full performance update after you get some miles on it!  Some pics too! ;)
Title: Re: ..20 mm carburetor..
Post by: sticlistul on May 11, 2010, 10:01:16 AM
And tell us about fuell consumption too :D.
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 11, 2010, 10:32:00 AM
Broke your cam? AND your happy? The Carb. I get! ?????????

..cam-er-a...lol..i just thot about that...lmao...
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 11, 2010, 10:38:13 AM
Dang, what's the deal with the cam?  Darn, 4-strokes again! ;)
Sounds like you''re having fun with the carb!  You'll have to give a full performance update after you get some miles on it!  Some pics too! ;)

..yeah, it has an adjustable needle....sweeeet...still playin with that...

..gotta buy me a new cam tho....
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 11, 2010, 10:39:37 AM
And tell us about fuell consumption too :D.


..ummm fuel consumption....sucks gas!!...lol..sorry stic, but i probly wasn't getting  45 mpg before the carb...
Title: Re: ..20 mm carburetor..
Post by: sticlistul on May 11, 2010, 10:45:55 AM
f$%k  ... this is like a car ... and you didn't get a new engine or other things ...
Title: Re: ..20 mm carburetor..
Post by: zombie on May 11, 2010, 04:40:52 PM
Slinger! You normally give us soo much detailed info. You explain the facts so that even a cave man could do it! Now all we get is "CARB GOOD!"? I'm thinking it is sooo good you don't want to sit around posting...
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 11, 2010, 05:05:07 PM
...patience grasshopper.....


..twas late last evening when i finally washed up, and I must work today....

..stll not through with the jetting, but i'm in a safe zone...



...carb goood.....


 ;)
Title: Re: ..20 mm carburetor..
Post by: zombie on May 12, 2010, 04:28:16 AM
Conitchieee Waaaaa Mother Fjutcher! Who's your Baby?
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 13, 2010, 01:06:15 AM
..okay so, here it is...
..this 20 mm carb is th' bomb!! (have i said that already?)
..it has a 5 position needle, with a distinctively different taper than my original carb..
..it's gradual at the bottom, then has a step in th middle, then gradual toward the top..
..the diaphram and slider are beefier, and it has a stronger spring..
..the carb's intake port is vertically oval shaped, as opposed to circular on the original..
..the main jet is TINY in comparison to my original, about half the size...
..came in at .095mm..(waaay lean) and is now at 1.02mm... (spot-on)..
..i'm at 3 rotations on the idle screw mix, and in the middle notch of the needle...
..installation was pretty much plug-n-play...

..my scoot is now quicker off the line...noticeably!!..
..which is no small feat, as a dress out around 225 lbs..
..maintained flat land speed is still variable according to the wind,(not nearly as sensitive as before tho) and edges closer toward 50 mph than before..which is my ultimate goal...in a draft, i have no problem keeping up with 45 mph traffic now...which is awesome..
..i've consistently topped out downhill at 95 kmh, with or against the wind, which i couldn't do without the blown air induction on the original carb..

..i am at the limits of my cvt's capabilities...need the over-range variator for any more top end speed...


peace
Title: Re: ..20 mm carburetor..
Post by: Shaka on May 13, 2010, 01:13:33 AM
Sounds like a great upgrade Slinger!
Very descriptive explanation of it also!
So what's next?  The BBK, over-range, reduction gears? ;) ;D
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 13, 2010, 01:29:55 AM
...no bbk until something breaks...

..next step is the variator, without a doubt..i need a new one, and i might as well go bigger...

..i'm still mot sure about the gears, as i don't want to lose bottom end take-off speed...

..wondering if i could turn enough rpms to make gears effective without a bbk...
Title: Re: ..20 mm carburetor..
Post by: Shaka on May 13, 2010, 01:42:17 AM
With the bigger carb and free-flowing exhaust you might be able to turn the gears.  It's all in the cvt tuning!  Might be worth a try
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 13, 2010, 01:44:58 AM
..true, and even if it didn't, i'd be set for when i do go with a bbk...

..imma get me the bigger variator...might order it tomorrow....

..seems such a waste of capabilities for that to be my limiting factor....
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 13, 2010, 01:47:11 AM
...btw, thanx zombie, for turning me onto that carb...
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 13, 2010, 01:55:27 AM
..another btw, it turns out that this is a CVK brand carb...

..haven't googled them yet, so anybody had any experience with one?


peace
Title: Re: ..20 mm carburetor..
Post by: zombie on May 13, 2010, 01:56:49 AM
No doubt my Brother! That overrange var will give you the same effect as going w/ a gear set only you will lose nothing on the bottom. It will give you a few more mph on top.
Title: Re: ..20 mm carburetor..
Post by: zombie on May 13, 2010, 02:04:12 AM
KEIHIN CVK carb - testing vac. slide function (http://www.youtube.com/watch?v=g0RQ47PNfYA#lq-hq)   It's a keihin Cvk is the model
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 13, 2010, 02:15:59 AM
...wwwwowwww....that's f*kng awesome....that explains a LOT!!!....
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 13, 2010, 02:47:50 AM
No doubt my Brother! That overrange var will give you the same effect as going w/ a gear set only you will lose nothing on the bottom. It will give you a few more mph on top.

..i'm only looking for a few... ;D

..when i bought this ride, it would do 37mph..at BEST downhill with a wind....
Title: Re: ..20 mm carburetor..
Post by: zombie on May 13, 2010, 02:59:35 AM
Every reliable mph is a blessing.
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 13, 2010, 03:02:09 AM
Every reliable mph is a blessing.

.."reliable" being the key....i'm in it for th' long run...
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 26, 2010, 11:53:34 PM
...so, i decided to try the 5.5 gram rollers with the bigger carb....

..not too bad...

...

..i think i could tune the needle to increase take-off speeds, and i really felt the torque difference at..and just off WOT...

..tomorrow is another day...
Title: Re: ..20 mm carburetor..
Post by: zombie on May 27, 2010, 12:04:31 AM
That's where you want to feel it. Bottom end torque is good, but feeling it at the top is best!
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 27, 2010, 12:07:10 AM
..it was an awakening brother....
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 27, 2010, 12:52:30 AM
...yeah, so i'm able to generate a bit more horsepower, but if i can't get a greater ratio between the drive and the  driven pulley's, then it's all in vain...

..a belt can only ride so high on the drive pulley...

..a few engine rpms and a bit of increase in torque doesn't matter if you can't put it to the pavement...


 :-\
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 29, 2010, 11:33:46 PM
.....however, the 4.7s are over-all better....
Title: Re: ..20 mm carburetor..
Post by: zombie on May 30, 2010, 01:31:46 AM
.....however, the 4.7s are over-all better....
In bed!
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 30, 2010, 01:32:52 AM
...yeah, i didnt get that....

..reckon i ain't gettin a lot lately...
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 30, 2010, 01:33:33 AM
...its greeeen....
Title: Re: ..20 mm carburetor..
Post by: zombie on May 30, 2010, 01:34:47 AM
Griffon wanted to see in bed after all our posts. Don't ask me why!
Title: Re: ..20 mm carburetor..
Post by: wordslinger on May 30, 2010, 01:36:32 AM
..i know right!!...didn get it...

 :-\