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Messages - phatboy

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16
Agility 50 / Re: Does weather change performance a lot
« on: August 14, 2013, 06:28:22 PM »
Quote from: LoveMyKymco on August 14, 2013, 03:28:11 PM
Also you can advance your timing more in the cold, if you do that that is. Those 72cc kits arent that much stronger than stock and I think a 105 jet may be too big, especially with that cam. I run the Hoca 50mm/82cc kit with the A9 and I run a 38 pilot and 105 main with a performance intake,an open uni air filter, and "performance" exhaust.
I'm running stock CDI with wire cut, can't change timing, was thinking about CDI with adjustable timing but i need a DC CDI they cost a lot more

Does seem like it would be rich but the plug is tan colored may even be on the lean side

I got my air box and the exhaust drilled out the scoot is a lot louder than stock

im running the stock head probably higher compression than aftermarket heads wonder if that makes a difference in air fuel ratio.

17
Agility 50 / Re: Does weather change performance a lot
« on: August 14, 2013, 05:33:47 AM »
almost 80 F today and the scoot is better almost back to tip top power i had on a 90 F day, still a couple mph off

its weird the weather effects tune so much, must be these scoots are so low powered compared to other vehicles you really notice

think i will upjet its usually not 90 F here

just curious what is the range for winter and summer jets you guys use. like are we talking 5 point difference, 10 point or what.

18
Agility 50 / Re: Does weather change performance a lot
« on: August 12, 2013, 08:08:39 AM »
Quote from: XR100 on August 12, 2013, 06:58:18 AM
My a50 loves hot weather, she doesn't care for the cold very much.
yeah it seems opposite of what should happen, but mine ran great in the hot temps last week

could it have something to do with better fuel atomization when its warmer?

19
Agility 50 / Does weather change performance a lot
« on: August 12, 2013, 06:53:19 AM »
scoot didnt feel quite right today, power is down, worse acceleration and top end lost about 3-4 mph

i was hoping to be done with tweaking the scoot for the summer so before I tear into it again i wonder if its just weather

last week was 85-90 F and dry out and the performance was great

today it was 65 F and humid I want to say 65-70% humidity

i wouldn't think weather would matter so much but these scoot engines are pretty simple not like a car with fuel injection so i could be wrong. what do you think, from those who ride more than i do.

20
General Discussion / Re: BAD Driving scooter video (SYM scoots)
« on: August 04, 2013, 06:57:56 AM »
Cant you ride side by side in the same lane there. You can here.

21
Agility 50 / Re: a9 camshaft
« on: August 03, 2013, 08:39:33 PM »
Quote from: reg on August 02, 2013, 01:20:26 PM
not a happy chappy, fitted the a9 high profile camshaft. went for test run and its no different other than it makes more noise. it sure sounds faster but the speedo says otherwise. i am using 6g rollers, could reducing to 5g make that much difference?
sorry t hear that. I don't know but 5g seems to work very well for me the hp peak is probably higher and rpm is 8000+ I hear this is a top end cam. Rollers are cheap its worth a shot

22
Agility 50 / Re: A9 cam = best upgrade ever
« on: August 03, 2013, 08:37:07 PM »
I don't know the specs its the original stock belt

Weird thing I retorqued my head to max 2.2 kgf m and adjusted valves to 0.003 and I got about 1 mph. 51 to 52 mph indicated.

Satisfied with scoot now I'm done tuning for now finally

23
Agility 50 / Re: A9 cam = best upgrade ever
« on: July 25, 2013, 08:50:56 PM »
Quote from: baddi on July 25, 2013, 10:29:37 AM
Have you got a measurement of mpg yet? :D


Also, can you measure the lift of each lobe? ;)
just filled up, half this tank is with the cam, 72 mpg

i will measure again on next fillup

funny thing is with this cam im actually spending far less time at WOT, because it has power to spare. i don't know if mpg will get better or worse.

i did research on this cam, somone posted on another forum the lift is the same as stock. the duration is 5 degrees longer which isnt much. the difference is the cam profile, i should have taken a picture, the A9 is far more aggressive and you can clearly see the difference side by side. it ramps up to full open really quick while stock opens the valve gradually.

24
Agility 50 / Re: New to Kymco just got 2013 AG50
« on: July 25, 2013, 06:43:07 AM »
i guess its possible the scoot came without restrictions but its so easy to do. Someone with experience can have a new boss on the scoot in 5 min. A jet can be swapped in a few minutes easily. they definitely could have done it for you and you would not know.

maybe check under the seat, my scoot had a plastic bag with old variator boss and jet in the tool kit

25
Agility 50 / Re: A9 cam = best upgrade ever
« on: July 25, 2013, 02:03:48 AM »
Tell us how it works for you, i rode the scoot 40 miles today since the cam made it so much fun and i could go so many more places i wouldn't even try going before!

I'm told the A9 is a top end cam so id guess the power peak gets pushed over 8000 rpm. the scoot runs about 8000-8500 most of the time with the 5g rollers, i might try lighter just to see but with 5g its working great.

I dont know if this will make the scoot overheat, i will probably switch to synthetic and change oil more often

also this is weird but the cam made it run better at low RPM too, the scoot just feels so much better all around

26
Agility 50 / A9 cam = best upgrade ever
« on: July 24, 2013, 11:33:28 PM »
hey

just installed A9 cam, and OMG, this cam is amazing. comparing stock vs A9, the new cam visibly has a significantly more aggressive profile.

gained power all around, theres this hill i could get up at 22 now im going up at 27 no longer riding white line, doesnt sound like much but this is a 25 mph speed limit road, 22 is dangerous

on the flat the top speed went from 42 to 50+

this is the best single upgrade ive done, gave even more power increase than going 49cc to 72cc!

annnnd... im 280 lbs, a lighter rider would get quite a bit more.

27
General Discussion / Re: Airbags....
« on: July 24, 2013, 01:04:59 AM »
Looks really hot and uncomfortable

maybe in colder weather it will be ok

28
Agility 50 / Re: dumb question about cams
« on: July 20, 2013, 02:50:08 AM »
5g weights came today, installed and rpms average 8000-8500, it must be above the powerband because scoot is slower all around, but i'm keeping the weights on until the a9 cam comes, we'll see if the power band gets shifted into the new rpm range. will report back next week when it's supposed to come.

so far none of these mods are making much of a difference, i mean hill climbing is better but i'm getting like 2-3 MPH improvement. seriously thinking about going all out.

will a 52mm bbk fit on these kymcos? I'm reading that some need machining on the case, I don't care to do that.


29
Agility 50 / Re: anyone installed an AC cdi
« on: July 20, 2013, 02:29:52 AM »
cool thanks, i did some reading based on what you said, looks like the cdi is powered by a special winding in the stator, i had it all wrong.

not sure if its worth buying a new stator just to use an ac cdi, probably not

30
Agility 50 / anyone installed an AC cdi
« on: July 19, 2013, 08:14:13 PM »
hey,

looks like 99% of CDI out there are AC but the A50 is DC CDI, and i'm looking at a cdi with adjustable rev limiter but it's ac, can't find a DC one.

despite posts here that say the A50 has an AC cdi, it's definitely DC. My question is has anyone converted to an AC cdi. looks like you could do it if you tapped a wire from the generator? problem is the generator has three wires, one is ground, which of the other two should you use.

buy the way in case anyone disagrees and thinks the A50 has an AC cdi, in the service manual wiring diagram, the generator only connects to the regulator, headlight switch and auto bystarter, NOT the CDI

second reason, i tested the voltage with a multimeter and there was 13v DC at the CDI power pin

third reason I used that power pin to run my tach, it works, if it was ac i'd probably have a fried tach


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