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 Post subject: Re: Big Bore Setups
PostPosted: Sat Apr 04, 2009 6:46 pm 
Bumped my slow jet to a 38 and went for a little ride today:

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 Post subject: Re: Big Bore Setups
PostPosted: Thu Aug 06, 2009 8:35 pm 
Bump added my info first page. Still tuning

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 Post subject: Re: Big Bore Setups
PostPosted: Sun Aug 30, 2009 8:06 am 
ENGINE
Motor mods: JC Racing 58.1cc big bore motor. My own ported head.
Lightened Flyhweel: Yes, JC Racing
HO Cam: Yes
PC/JC20 Carb (yes/no): JC20
Brand of (carb keihin / sheng wey): Shengway
main jet: 82
slow jet: 35
needle setting: Middle
Which filter on carb: JC20 supplied
Exhaust: Stock

TRANSMISSION
Variator: Polini
Roller weights and brand: 5.6g Polini
Clutch springs (blue or pink): Black, 6500 RPM engagement
Gear Kit: Full Met Gears

OTHER
CDI: No. Added 2-3 degrees timing via pickup
Hitting rev limit (yes / no): No, only down hills

WHEEL
Rear Wheel size: Stock
Rear Tire size: Stock
PSI: 28
Tire Brand: Stock

ENVIRONMENTAL FACTORS
Elevation: 406 ft
Weight: 200 lbs with gear
Top Speed Flats (no wind): 50 mph
Top Speed downhill (no wind): 54 mph


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 Post subject: Re: Big Bore Setups
PostPosted: Sun Oct 18, 2009 8:48 am 
Any more?

I'd love to do this for the girlfriend's scoot, but we really need to reliably hit 55 with a reliable scooter. It looks like GY6 maybe our best bet :(.

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 Post subject: Re: Big Bore Setups
PostPosted: Sun Mar 07, 2010 1:59 pm 
ENGINE
Motor mods: JC RACING 58.1 cc Stage 3
Lightened Flyhweel: yes
HO Cam: yes
PC/JC20 Carb (yes/no): Yes
Brand of (carb keihin / sheng wey): Keihen
main jet: 90
slow jet: 38
needle setting: 2nd from top
Which filter on carb: K&N Type
Exhaust: Two Bros Carbon FIber

Transmission
Variator: Polini
Roller weights and brand: polini 5.6 (all)
Clutch springs (blue or pink): Stock
Gear Kit: MXP Hi Speed

Other
cdi: KITACO
hitting rev limit (yes / no): no

Wheel
Rear Wheel size: Stock
Rear Tire size: Stock
PSI: 25lbs
Tire Brand: kenda (stock)

Environment Factor
Elevation: Las Vegas 2000 ft on the strip
Temperature at time of test: 65
Weight: 205lb
Top Speed Flats (no wind): 50.7 mph GARMIN GPS
Top Speed downhill (no wind): 50.7 MPH (sorry no hills really)

NOTE: Weather will improve performance. Also I just broke it in and Havent really "Pushed" it. im confident I can get 53-55 mph. Also I get to 45mph fairly quickly. I'll keep ya posted with pics of GPS when I achieve a worthy speed.

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 Post subject: Re: Big Bore Setups
PostPosted: Fri Mar 26, 2010 8:28 pm 
Bump for more!!!

I just got my motor back, so i hope to get it all back together soon to get tuning.

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 Post subject: Re: Big Bore Setups
PostPosted: Tue Jun 29, 2010 7:03 pm 
Motor mods: JC RACING 58.1 cc
Lightened Flyhweel: yes
HO Cam: yes
PC/JC20 Carb (yes/no): Yes
Brand of (carb keihin / sheng wey): Sheng wey
main jet: 85
slow jet: 35
needle setting: Richest
Which filter on carb: K&N Type
Exhaust: Dr. D

Transmission
Variator: Polini
Roller weights and brand: OEM metro 6G
Clutch springs (blue or pink): Blue
Gear Kit: None

Other
cdi: Bowls/Posh
hitting rev limit (yes / no): no

Wheel
Rear Wheel size: Dio
Rear Tire size: Dio
PSI: 35lbs
Tire Brand: Pirelli

Environment Factor
Elevation: Not sure
Temperature at time of test: 87
Weight: 180 LBS
Top Speed Flats (no wind): 44 (Garmin GPS)
Top Speed downhill (no wind): 55.2 (Garmin GPS)

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Junior Mint
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 Post subject: Re: Big Bore Setups
PostPosted: Wed Jun 30, 2010 12:36 pm 
Well I told ya I would update. Its runnin well and problem free. Super consistent as well. Its way hot here in Las VEgas so riding is tough. BUt I managed to hit 55mph a while back and forgot to post pics. To me thats good and hitting top speed or fairly close seemed to pretty easy and I didnt feel I had to risk the engine at expense of going fast. So overall im VERY happy with my setup and performance.

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 Post subject: Re: Big Bore Setups
PostPosted: Wed Jun 30, 2010 5:26 pm 
Mine seems to run better on hot days as well.


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Donkey Puncher
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 Post subject: Re: Big Bore Setups
PostPosted: Wed Jun 30, 2010 11:10 pm 
Engine:
Chanito BB piston, slightly ported head, slightly centered exhaust port
HO cam
stock carb
MJ: 100
SJ: 35
K&N covered filter via the stock intake tube
NCY-R 1st Generation exhaust

Transmission:
Stock variator
6g Metropolitan weights
stock clutch springs
stock variator belt

CDI:
Kitaco

Wheel:
Dio rear wheel
Pirelli SL26 130/90-10 tire
about 33 PSI

Environment:
sea level
about 75-80 degrees F
about 60-80% humidity
about 150 lbs dry rider weight (plus gear and a kryptonite fagheddaboutit lock)

Top speed on flats: 49mph, tucked like a retard. rode like that for 20 or so miles straight. GPS data used.
no hills, so couldn't test downhill speed. i'm sure, if given enough hill, i can hit 60mph easily, as i could hit 55 on a stock GET.

EDIT: i forgot about the gearing. nevermind the "downhill speed" assumption.

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 Post subject: Re: Big Bore Setups
PostPosted: Thu Jul 01, 2010 9:12 am 
Hey so now I have delimma in relation to this topic. Should I even be riding it in the 110 plus degree weather in Las Vegas or will that be bad for my bigbore? My friends ride stock so they wont know.

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 Post subject: Re: Big Bore Setups
PostPosted: Thu Jul 01, 2010 1:57 pm 
jduenas32 wrote:
Hey so now I have delimma in relation to this topic. Should I even be riding it in the 110 plus degree weather in Las Vegas or will that be bad for my bigbore? My friends ride stock so they wont know.


If it is running 100%, and you're sure there is no air in the coolant system it should be fine. I ride mine in 90+ and the hottest mine has gotten is 198 degrees. I wouldn't go WOT all the time, as that obviously isn't the best to keep temps down.

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 Post subject: Re: Big Bore Setups
PostPosted: Thu Jul 01, 2010 3:07 pm 
I go full throttle as much as traffic will allow. On group rides I run with the fast scooters so I have ridden over 100 miles in 90-100 degree temps over hills and whatnot, full throttle high 50's for miles at a time with no problem at all. I have an oil cooler though but perhaps that hurts on cool days. It takes my bike about 5 miles to warm up and start running hard.

The only reliability thing is that miles of high speed running smokes the belt. On a high speed open country group ride day, my bike will eat a brand new Kevlar belt. At the end of the day it will only go about 53-54 mph and my belt is about 3mm more narrow and case full of belt shavings. Engine never has trouble other than the ignition issue I had. Bottom end is solid.


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 Post subject: Re: Big Bore Setups
PostPosted: Thu Jul 01, 2010 7:00 pm 
smartbomb wrote:
The only reliability thing is that miles of high speed running smokes the belt. On a high speed open country group ride day, my bike will eat a brand new Kevlar belt. At the end of the day it will only go about 53-54 mph and my belt is about 3mm more narrow and case full of belt shavings. Engine never has trouble other than the ignition issue I had. Bottom end is solid.


Would having a vent such as the following help with adding a few more miles to belt life?

http://totalruckus.com/phpBB3/viewtopic.php?f=34&t=44722

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 Post subject: Re: Big Bore Setups
PostPosted: Thu Jul 01, 2010 7:57 pm 
Infidel wrote:

Would having a vent such as the following help with adding a few more miles to belt life?


I don't think it's as much the heat as it is the friction on the belt, especially with a strong contra spring. I drilled evenly spaced holes around the "Honda" on my cover to get some heat out. I figured it can't hurt.

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