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Messages - yajblackburn

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1
People 50 / Re: Why does my stock variator out perform my new Polini one?
« on: August 12, 2010, 06:21:57 PM »
So I took the Polini off the People and put it on the Yup.  I put it all back together to be greeted to a nice grinding noise coming from the kick starter engager.  It seemed the boss drive for the Polini is just a tad longer than stock and pushed the cranshaft kickstarter engager closer to the engager located on the engine case resulting in that great noise......hmm.  However the stock Kymco boss drive does not fit inside the Polini.  So I left the lighter weights from the Polini inside the stock variator on the Yup and saw the nice low end boost I was looking for and the top speed of 50mph (took a little while to get there).  I put the stock weights into the Polini variator and put it back on the People, I havent had a chance to take it out yet.  So, the lesson here is a Polini variator made for a People does not fit the Yup....duh.  Some good common sense right?

2
People 50 / Re: Why does my stock variator out perform my new Polini one?
« on: August 04, 2010, 08:48:36 PM »
I purchased a Keli racing variator (boss drive, weights, ramp plate and pulley face) from vt cycles and I saw a 10mph gain.  The other derestrictions it had was just the cdi.  Maybe its because I'm like 170 lbs, who knows.  My 02 Yup50 has just been derestricted (boss drive and cdi mod) and it also gets up to 50mph.  As for other brands of variators for the ZX?  Not sure, I got my info from a dude who had pics and info on his ZX50 about 5 years ago.  His ZX did 50mph with the same setup, he told me where to go and what to get.  So thats what I did. 

3
People 50 / Re: Why does my stock variator out perform my new Polini one?
« on: August 04, 2010, 04:51:40 PM »
Yeah I've been on here for a while, back in the day.  I love to help people with their Kymco's since I've had a long history working with them.  I haven't had that much experience with aftermarket parts besides variators.  It is not the stock plate with stock weights, all Polini.  Maybe I will try to put the stock weights with the Polini and see what happens.  On my 2004 ZX I purchased a Keli variator and saw a 10mph difference (40mph to 50mph).  I was expecting a slight improvement over stock, maybe 3mph, but nothing.  I opened the bike up yesteday and honestly I like the stock one better.  It accelerates all the way to 50mph with no flat spots.  Maybe I will just put this one in my Yup50 and see what happens.  Any advice will be great advice.  Thanks!

4
People 50 / Why does my stock variator out perform my new Polini one?
« on: July 31, 2010, 09:03:36 PM »
So my 1999 People50 already does 50mph with the derestrictions (exhaust, cdi, boss drive).  I only replaced the boss drive, not the entire variator, I left the stock ramp plate and weights in place.  I recently purchased a Polini variator kit, installed it and was instantly dissapointed.  For some reason my stock variator outperforms it 10 to 1.  With the Polini it goes to 30 pretty quick (not as fast as the stock one), hesitates at 30 for a good 5 seconds while the engine sounds as its revving up to hell, then slowly climbs to 40mph.  I havent had a chance to max it out, but in the distance it took me to get to 30mph,  the stock variator would have me past 40mph.  I was expecting different from the Polini, it's that long pause at 30mph that kills it.  The revs stay consistantly high from 30-40mph.  Strange.  Any ideas before I return this "performance" variator and go back to my stock one? 

5
General Discussion / Re: TOP SPEED--AM I CRAZY OR DID A 50CC KYMCO SUPER 9 DO 52MPH
« on: November 17, 2009, 04:01:19 PM »
Well us skinny meme's do have that areodynamic ability, I'm 6'3 170.  My ZX is not just a derestricted boss drive, the whole variator/weights were replaced with a high performance one with a different angled face plate and variator face.  I never just derestricted the boss drive with stock variator to see the difference.  I got the variator from VT Cycles in Hawaii for around $60.00.  I believe it was a Kelli racing variator, not sure what gm the weights are.  On a flat nice stretch it will go over 50mph....a nice paved road with no wind that is.  On average it's around 50mph  I once got it to almost 60mph going downhill.....and it wasnt scary at all, it was actually quite comfortable.

6
General Discussion / Re: TOP SPEED--AM I CRAZY OR DID A 50CC KYMCO SUPER 9 DO 52MPH
« on: November 17, 2009, 03:32:12 AM »
My setup is stock.  Just the aftermarket variator and the cdi modification. Stock cylinder, stock exhaust, stock carb, stock airbox.......stock everything else.  Maybe I'm just really aerodynamic

7
General Discussion / Re: Scooter cover
« on: November 16, 2009, 02:28:01 PM »
I have the pleasure of putting my Kymco's in a garage, but even in the summer I cover them when they are outside with a decent grill cover.  They are cheap and available almost anywhere. 

8
General Discussion / Re: Yup service manual
« on: November 16, 2009, 02:25:36 PM »
Thanks for the reply.  I actually found one on a website if anyone else is looking for one.  It can be found at:  www.timtaylor.net/scooter/manuals.htm

9
General Discussion / Re: TOP SPEED--AM I CRAZY OR DID A 50CC KYMCO SUPER 9 DO 52MPH
« on: November 16, 2009, 02:23:52 PM »
I have a ZX that does 50mph with a aftermarket variator and cdi derestriction, a People50 that does 50mph with a derestricted boss drive and derestricted exhaust and a Yup50 that I just bought yesterday that went from a 35mph stock speed (I expected 30mph, just like every other scooter but was surprised by 35mph), I did the cdi modification and it shot up to 40mph.  Later today I will do the boss drive and see how fast it will go.

10
General Discussion / Yup service manual
« on: November 15, 2009, 11:24:56 PM »
Hey guys.  I recently aquired a 2002 Kymco Yup50.  Ive been looking for a service manual to download, but can't find one.  does anyone have any links to one?  Thanks!

11
zx50 / Re: ZX50 carburetor inlet fitting
« on: November 10, 2009, 12:58:05 AM »
Ahh thats a nice picture.  that should do, thanks!

12
zx50 / Re: ZX50 carburetor inlet fitting
« on: November 09, 2009, 09:31:23 PM »
Yeah I should of have put some loctite or gasket sealer on the fitting when I put it back on.  Didnt think of that.  Thanks!

13
zx50 / Re: ZX50 carburetor inlet fitting
« on: November 09, 2009, 09:28:37 PM »
Thanks Zombie, the ZX is not new to me, Ive had it for over 4 years with 8,000 miles on it.  I also have a People 50 and the oil line is on the intake.  I think they made the ZX with the oil line going to the manifold for a few years then switched it to the carburetor....or vise versa. 

14
zx50 / ZX50 carburetor inlet fitting
« on: November 09, 2009, 07:22:38 PM »
Hey guys.  I have a 2004 ZX50, recently the oil inlet fitting popped out from the carburetor.  I put the fitting back into the inlet where I thought the direction of the nipple would be facing (11:00 position).  After a few days I noticed a flat spot in acceleration.  I did the usual carb clean, spark plug replacement, fuel filter replacement and air filter cleaning and got no improvement.  I concluded that the oil inlet fitting must be at to much of a steep angle allowing excess oil to enter the carb causing the stumble.  I put the fitting nipple in the 9:00 position hoping it would fix the problem.  It somewhat did.  Under the service manual it shows the oil inlet located on the intake manifold, not the carburetor.  I dont know if this is where it was previously located prior to 2004, or after but I doubt someone ever changed the manifold and modded the carb to take the inlet line.  I was wondering if anyone has a picture or can tell me the position that their oil inlet fitting is positioned so I can rule it out.  Thanks .

15
People 50 / Re: best upgrades for a 15000 mile scooter
« on: June 19, 2009, 06:59:39 PM »
The odometer reading is actually in kilometers, not miles.  I made the mistake of thinking I had 13,000 miles on mine but then noticed that it was in kilometers, then 6,500 didn't seem so bad.  With two modifications (boss drive/exhaust washer removed), this bike can reach 50mph.

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