Post by mrpalmetto on Mar 15, 2015 13:48:47 GMT -5
If I'm running near full throttle and as I back off slowly near mid throttle, and as I continue to ease off, the RPM's raises and speed increases a little. What does that tell me about My main jet size?
When I am cruising at 55mph, and I'm revving at between 6800-7000 RPM range, is that a safe and reliable RPM?
Post by mrpalmetto on Mar 15, 2015 14:44:32 GMT -5
I'm running a 115 in a 28 mm carb. Almost great idle. Does not sound perfect to me but its real darn close. Almost perfect. I had a 122 or a 125, can't see those numbers, in it before but I had to turn my air/fuel screw all the way home to get my best idle so that's where I changed to the 115 because that's all I had. Any suggestions to what size jet to try next? Thanks for your help.
The lower the rpm the better it is for the engine. The only problem with these small engines is that its hard to reach those speeds with lower rpms. Your right about where you need to be. For example at 7000 rpms I'm usually at 60mph and 7500 rpms 65+ mph . I try not to go over 8000 rpms and only keep her around 7500 for shorter distances. I ride between 6000 and 7000 80% of the time.
63mm bbk 61mm head with roller rockers Taida clutch and varistor 15 gram rollers High flow oil pump Taida high torque starter 18:36 final drive gears Oil cooler with oil temp gauge 30mm flatside carb 125 main jet So far 81mph on the interstate
I changed my drive gears also. Do you have quick, decent or adequate acceleration.? From my experience the only thing that increases top end is the gears, because the engine is only going to go as fast as the gearing is going to allow. I may be wrong but, for example, belt size did nothing, and I guess there are a few mods that get you 1 or 2 mph, but with hills and wind and weather factors, it's really hard to tell?
Was it not the gearing that got you to that high a top speed?
Cruisin at 45-50 mph 6K rpm is perfect IMO..do you have a pipe and uni filter on that scooter? If so you may want to try a 120 just too see if it gets rid of the top end bog....Im sure it will
Last Edit: Mar 17, 2015 7:12:54 GMT -5 by jerseyboy
Your not lost until you run out of gas.
2012 Taotao ATM 150(163)
60MM Taiwan BBK
Big Port Head with 12,000 RPM Springs
28.5mm NCY Aluminum Intake
13g Polygon Sliders
Progress Racing CDI
Mikuni High Flow Fuel Pump
Keihin 24mm Jetted 120
UNI POD modded air box
P&P Exhaust 1" Stainless Header free flowing
16/37 NCY Gears
Gates Power link
NCY 3RD Gen Blue Racing Clutch and Bell