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Post by 2010vip on Aug 4, 2018 0:06:19 GMT -5
Hello new to forum. I have a 2010 VIP with 100cc big bore kit, 69mm head, a9 cam, 24mm naraku carb, v2 intake, uni filter pod, ncy direct ignition coil, ncy clutch kit, yellow clutch springs, yellow contra spring, 9 gram variator weights. Scooter runs between 6200rpm and 6900rpm. Speed on flats is 50 to 57mph. Uphill 25 to 30mph. What rpm should I be running at for max performance and what contra spring,clutch springs and variator weights should I use for good uphill and flat speed? Or is this as good as it gets with where it's at now?
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Post by AtariGuy on Aug 4, 2018 0:38:48 GMT -5
7500 is about as high an rpm you should run. If you can only get 25-30 uphill, your variator could be out of tune. Also consider going back to stock ignition parts and stock airbox, the hype for the "red hot" performance coil and cdi is bull. 90GTVert proved that on his scientific testing on project taotao. And the pod filter makes keeping the carb in tune a very finicky task, stock airboxes have a resonant chamber that absorb air pressure differences - for lack of a better way to explain it |
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Post by 90GTVert on Aug 4, 2018 7:13:59 GMT -5
 Sounds like you're doing quite well now as long as those hills are pretty steep. You could try a little lighter on the weights and see if it improves. More RPM may decrease engine life though.
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ratdog
Scoot Enthusiast
Posts: 342
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Post by ratdog on Aug 4, 2018 8:21:43 GMT -5
50 to 57 on the flat are great! I have no idea how you are getting 57 mph out of 6900 rpm. My first thought would be to go to lighter weights, which should let you get more RPMs for getting up those hills. Btw, I would run a plug chop and check your mixture. If you are getting a good plug (tan) then there is no reason to mess with the air filter. Personally I’m a bit surprised at how low RPM you are running, but I know little about tuneing the CVT so no advice there
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Post by humanshield on Aug 4, 2018 12:19:54 GMT -5
Have you changed gearing? I have a "100cc" BBK on my scoot. Use a GPS to verify your speeds and check your tach. Usually 57 indicated means about 45-47ish actual. Most 150cc scoots are nearing their limits to do 57mph and about 7,000rpm would be about right for a 150cc with 150cc gearings (which is different than 50cc gearing) No way on Earth I know of that a 50cc scoot with a 100cc kit could do 57mph at anywhere near those RPM's
With stock gears, my 100cc scoot is at 7,000rpm at about 43mph
Carburetor..... How do you like the 24mm vs stock 50cc carb? Did you ever have a stock carb on it with the current setup? How would you describe the difference with the 24mm carb?
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Post by 2010vip on Aug 4, 2018 21:36:23 GMT -5
Have you changed gearing? I have a "100cc" BBK on my scoot. Use a GPS to verify your speeds and check your tach. Usually 57 indicated means about 45-47ish actual. Most 150cc scoots are nearing their limits to do 57mph and about 7,000rpm would be about right for a 150cc with 150cc gearings (which is different than 50cc gearing) No way on Earth I know of that a 50cc scoot with a 100cc kit could do 57mph at anywhere near those RPM's
With stock gears, my 100cc scoot is at 7,000rpm at about 43mph
Carburetor..... How do you like the 24mm vs stock 50cc carb? Did you ever have a stock carb on it with the current setup? How would you describe the difference with the 24mm carb?
The 24mm carb is awesome. The only complaint I have with it is that it has no accelerator pump. So starting is a little bit of a challenge with the electric choke only. Once it fires up it runs at 2 to 3000 rpm fast idle for about 1 or 2 minutes. The other carbs I had were 18mm and 20mm they wouldn't idle that great and would occasionally stall. |
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Post by 2010vip on Aug 4, 2018 21:40:25 GMT -5
Have you changed gearing? I have a "100cc" BBK on my scoot. Use a GPS to verify your speeds and check your tach. Usually 57 indicated means about 45-47ish actual. Most 150cc scoots are nearing their limits to do 57mph and about 7,000rpm would be about right for a 150cc with 150cc gearings (which is different than 50cc gearing) No way on Earth I know of that a 50cc scoot with a 100cc kit could do 57mph at anywhere near those RPM's
With stock gears, my 100cc scoot is at 7,000rpm at about 43mph
Carburetor..... How do you like the 24mm vs stock 50cc carb? Did you ever have a stock carb on it with the current setup? How would you describe the difference with the 24mm carb?
I was thinking about changing gears to 49 17 tooth set. But I am concerned that it will do worse on hills than it does now. Not sure if anyone has tried this gear set? |
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Post by 2010vip on Aug 4, 2018 21:44:30 GMT -5
Thanks for everybody's replies. Have only had the scooter since last September, so still new at this. Appreciate all the help!
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Post by 2010vip on Aug 4, 2018 21:54:53 GMT -5
Sounds like you're doing quite well now as long as those hills are pretty steep. You could try a little lighter on the weights and see if it improves. More RPM may decrease engine life though. The hills are fairly steep and last in spots for 1/8 to a1/4 mile. What do you think about 1000rpm clutch springs and 1500rpm contra spring. What effect would that have in power and top speed? The scooter doesn't start to move until it hits 5500 rpm right now with 1500rpm clutch springs. Kind of a pain in traffic. |
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Post by 90GTVert on Aug 4, 2018 22:49:25 GMT -5
Try the softer clutch springs and see how you like it. 1000RPM contra should have a similar effect to lighter weights.
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Post by humanshield on Aug 5, 2018 9:38:05 GMT -5
The 24mm carb is awesome. The only complaint I have with it is that it has no accelerator pump. So starting is a little bit of a challenge with the electric choke only. Once it fires up it runs at 2 to 3000 rpm fast idle for about 1 or 2 minutes. The other carbs I had were 18mm and 20mm they wouldn't idle that great and would occasionally stall. So the only difference you could tell was the idle? I've been told it increases top speed and acceleration....but I haven't tried it yet. Mine with 100cc BBK, cam and a few other mods runs so well right now. And I'm sure I'd have to go through the entire re-jetting dance to dial it in.
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Post by humanshield on Aug 5, 2018 9:42:43 GMT -5
2010vip..... Just curious......why did you choose a 50cc scooter instead of a 150cc scooter?
I have both, but the 150 is hands down the much more capable street scooter even with the mods to my 50cc scooter. Bone stock, the 150 will walk away from the modded (100cc) scooter and just keep on truckin. Hills are not a problem on the 150 because it has so much more torque. I started out with the 50cc scooter but couldn't really go far on it. On the 150cc scooter I can keep up with traffic, even aggressive, fast moving traffic. I don't need a 250cc scooter or larger because I have sportbikes.
I use the 100cc scooter mostly for running around locally within 3 miles of home. I initially chose the 50cc scooter because it was offered to me cheap because it was broken and I was just getting into scooters.
I love em both.
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Post by 2010vip on Aug 5, 2018 10:24:33 GMT -5
The 24mm carb is awesome. The only complaint I have with it is that it has no accelerator pump. So starting is a little bit of a challenge with the electric choke only. Once it fires up it runs at 2 to 3000 rpm fast idle for about 1 or 2 minutes. The other carbs I had were 18mm and 20mm they wouldn't idle that great and would occasionally stall. So the only difference you could tell was the idle? I've been told it increases top speed and acceleration....but I haven't tried it yet. Mine with 100cc BBK, cam and a few other mods runs so well right now. And I'm sure I'd have to go through the entire re-jetting dance to dial it in.
As a whole the carb is all around better. I just bolted it up and go. It is jetted for between 85 to 125cc, so really no need for tuning it. The main jet is 102. It may run a little rich, but I'd rather have it on the rich side than too lean. It seems to have a smooth power band and has a antiback fire valve on the side of the carb. The smaller carbs would always backfire and pop on decel with the aftermarket exhuast I have on it. |
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Post by 2010vip on Aug 5, 2018 10:31:52 GMT -5
2010vip..... Just curious......why did you choose a 50cc scooter instead of a 150cc scooter?
I have both, but the 150 is hands down the much more capable street scooter even with the mods to my 50cc scooter. Bone stock, the 150 will walk away from the modded (100cc) scooter and just keep on truckin. Hills are not a problem on the 150 because it has so much more torque. I started out with the 50cc scooter but couldn't really go far on it. On the 150cc scooter I can keep up with traffic, even aggressive, fast moving traffic. I don't need a 250cc scooter or larger because I have sportbikes.
I use the 100cc scooter mostly for running around locally within 3 miles of home. I initially chose the 50cc scooter because it was offered to me cheap because it was broken and I was just getting into scooters.
I love em both.
Mostly because I got it cheap, and parts are really reasonable to modify the engine. And you don't have to license it or have a motorcycle license. It's also kind of funny to pull up along a motorcycle in 2 lane traffic and watch their facial expressions. Because most people that have bikes know that mopeds are only good for 30mph tops. And to keep up with them in traffic, just kind gives me a kick😂 |
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