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Post by JerryScript on Apr 13, 2015 0:50:53 GMT -5
I just crossed the 1250 mile mark after my ride today through my favorite parts of town to ride in. I wanted to share my thoughts, and a wholehearted recommendation for one of the 16" wheeled models.
I started looking for a new scooter towards the end of last year. I started a new job that has me working at various locations around the valley, and was looking to move up to a 150cc. I had always liked the look of the 16" models, but couldn't find many posts relating to performance, though I found many warning about difficulty finding parts.
I started searching for parts before ordering the scooter, and was happy to find that more parts dealers are carrying parts for the BN157QMJ-3. I've found a half dozen dealers with parts, and between them I'm confident I can get anything unique to this engine, and even a complete replacement engine if needed. Even the unique CVT parts are more easily found these days. After measuring the engine stud spacing, I'm happy to find most BBKs will work as well.
Performance of my stock scooter has been very good. Take off at half throttle leaves cars in my mirrors, and cruising 45-55 at 3/4 throttle leaves enough extra throttle when needed, and keeps me at the head of the pack when riding around the valley. I've had it to just over 70mph on the freeway for short periods, and the 16" wheels give a smooth stable ride at all speeds. The taller wheels and different CVT and final drive gears give the 16" wheeled 150cc models about 15mph more stock than standard 157QMJ models. I plan on upgrading to the 61mm NCY BBK this summer, with appropriate sliders to tune the CVT I hope to top 80mph with a bit of throttle to spare. My variator shows more than 3/8" unused at the edge, so I'm pretty confidentconfident I can get there.
The 16" wheels and size of the scooter give it more of a small motorcycle look and feel. It is no where near as nimble as my 50cc short case with 10" wheels, it turns much slower, but leans better in turns. Riding over a manhole cover with 16" wheels is nothing compared to the spine jarring jolts I experience on my 10" wheeled scooter, and the adjustable dual rear shocks make it tunable for me alone or with a passenger with a quick turn of the adjusters.
So if you are on the fence between a 150cc and something larger, but are not looking to tour the country on it, I would highly recommend getting one of the 16" wheeled 150cc models. At around $1500-2000 depending on where you purchase it, you will get the most bang for your buck, and have a ride that gets constant compliments! BTW- the dark blue paint job on my model is beautiful!
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Post by tvnacman on Apr 13, 2015 4:50:58 GMT -5
Jerry if you don't step up on the gear size I think you will only pick up getting to top speed, not increase top speed. With a BBK and gears you can add 10mph under the same throttle position.
I'm glad your happy with what you got!!!!!!!!!!!!!!!!!!!!!!!!!
John
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Post by JerryScript on Apr 13, 2015 10:16:25 GMT -5
Jerry if you don't step up on the gear size I think you will only pick up getting to top speed, not increase top speed. With a BBK and gears you can add 10mph under the same throttle position. I'm glad your happy with what you got!!!!!!!!!!!!!!!!!!!!!!!!! John The unused space at the edge of the variator is what makes me think I can get a bit more top end with a BBK and appropriate sliders. Regardless, I just can't leave my scooter stock, the modding bug gets me every time! |
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Post by ricardoguitars on Apr 13, 2015 15:15:03 GMT -5
Jerry if you don't step up on the gear size I think you will only pick up getting to top speed, not increase top speed. With a BBK and gears you can add 10mph under the same throttle position. I'm glad your happy with what you got!!!!!!!!!!!!!!!!!!!!!!!!! John The unused space at the edge of the variator is what makes me think I can get a bit more top end with a BBK and appropriate sliders. Regardless, I just can't leave my scooter stock, the modding bug gets me every time!You can't do anything else but acknowledge, that inside feeling of knowing that you can get more out of it by doing this and that is unavoidable, the price you gotta pay for being a thinkerer  |
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Post by lain on Apr 13, 2015 15:34:19 GMT -5
The unused space at the edge of the variator is what makes me think I can get a bit more top end with a BBK and appropriate sliders. Regardless, I just can't leave my scooter stock, the modding bug gets me every time!You can't do anything else but acknowledge, that inside feeling of knowing that you can get more out of it by doing this and that is unavoidable, the price you gotta pay for being a thinkerer It's not a bug, it's a disease that plagues mostly males and lays dormant until introduced to tools, or sometimes it takes powertool to cause a flare-up of tinkerosis. It's symptoms are constantly carrying tools, a multitool being one of a must have for the pocket, often has inspirations to make machines do more than the factories make them do, and a tick in the back of your mind that almost like OCD when you see something broken you feel you want to fix it even if it isn't yours. |
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Post by geh3333 on Apr 13, 2015 23:48:32 GMT -5
Jerry if you don't step up on the gear size I think you will only pick up getting to top speed, not increase top speed. With a BBK and gears you can add 10mph under the same throttle position. I'm glad your happy with what you got!!!!!!!!!!!!!!!!!!!!!!!!! John The unused space at the edge of the variator is what makes me think I can get a bit more top end with a BBK and appropriate sliders. Regardless, I just can't leave my scooter stock, the modding bug gets me every time! Your 100% right jerry . with a little more power to turn heavier weights , you should get the higher climb and more top end. I'd love to see what she would do with a bigger head , exhaust and air fuel input ! |
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Post by JerryScript on Apr 14, 2015 0:18:00 GMT -5
The unused space at the edge of the variator is what makes me think I can get a bit more top end with a BBK and appropriate sliders. Regardless, I just can't leave my scooter stock, the modding bug gets me every time! Your 100% right jerry . with a little more power to turn heavier weights , you should get the higher climb and more top end. I'd love to see what she would do with a bigger head , exhaust and air fuel input ! The exhaust will be toughest, the port bolts are not in the same position as standard 150cc, according to what I've read while googling this motor. I haven't had the exhaust off yet, if it has one of those restriction tubes inside the header pipe, I'll at least try boring it out. Definitely will up the carb one size with any BBK, the stock one is not very responsive to a/f adjustments, nothing like a good Keihin! I'll be removing the mini propane tank sized air filter assembly and all emissions will come off then as well, switching to a lean clean uni installation. I've found a source for the oversized sliders that work with this variator. Stock rollers are 12.2g, so I'll order some 13g & 14g sliders to start the tuning with. I'll wait to see if there is any need for changes to the springs after the rest is done. It will be trial and error with the CVT, since I can't find other owners who have done much modding. I haven't seen any options for final drive ratio changes yet, but I haven't looked as hard as I have for other parts. If I end up with enough extra power to make use of a better ratio, I'll definitely consider it. |
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Post by rcq92130 on Apr 14, 2015 1:04:11 GMT -5
So much for the theory a stock 150cc GY6 can never achieve much more than 60+ mph.
VERY INTERESTING !!!!!!!!!!!!!
It will be fun to see where this all plays out ... and why you can get so much more out of this stock 150 compared to other stock 150s !
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Post by geh3333 on Apr 14, 2015 1:10:07 GMT -5
The 16 inch wheels have a lot to do with it , and I imagine the CVT must be a little better with distributing the power then the basic gy6 CVT setup.
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Post by geh3333 on Apr 14, 2015 1:16:41 GMT -5
To me , this shows how much easier it is to reach the 65 mph range then what was previously preached. I've always believed that even a stock 150cc with some CVT and air fuel mods should be able to reach 65mph. How many of us have been using these koso variators thinking they were all that. When they won't even let the belt climb that high in them . if this k&s turns out the way I think it will , then my CVT will be tranfering much more usable power to the rear wheel. A 58.5 bbk scoot doing 70mph with 13 inch wheel would be impressive. We'll find out soon enough.
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Post by tvnacman on Apr 14, 2015 4:55:25 GMT -5
Te 16"wheel scooter engines are different crank head intake cvt.
John
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Post by geh3333 on Apr 14, 2015 6:00:02 GMT -5
Te 16"wheel scooter engines are different crank head intake cvt. John Is it rated at a higher horse power ? So it already has factory mods compared to the basic 150cc gy6. |
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Post by jerseyboy on Apr 14, 2015 7:02:26 GMT -5
Wow,,this has bursted my bubble,,all the work($$) I did on my scooter with BBK,cam,head,pipe,jet,uni,cdi,coil,ect..and I still have a hard time reaching 65...lol..if he is doing 70 GPS verified thats amazing on a stock motor,maybe just short of a miracle,,wonder if 3" can really give you that much more without more power,,I highly doubt it,,but according to John these models have more power from factory,it may even be a stroker??,,Id like to see some measurements on heads,ports,valves,cylinder,ect...if this is for real a BBK on that thing should bring jerry closer to 80mph...lol..and please dont take this wrong jerry,,Im not accusing you of false info,,but a GPS verified would be awesome to confirm it...maybe you just have a fluke there?
Congrats on the bigger wheels and glad you enjoyed the ride!!
Tom
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Post by tvnacman on Apr 14, 2015 9:08:13 GMT -5
this video was shot on a 16" wheel scooter
I you look at the hp ratings the 16" wheel scooters are rated a little higher.
John
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Post by rcq92130 on Apr 14, 2015 12:34:19 GMT -5
Te 16"wheel scooter engines are different crank head intake cvt. John I, for one, do not see how a larger wheel is any different than up-gearing. Both accomplish the exact same thing : increasing the road distance traveled for every engine RPM. Those nice big wheels may make for a great and stable RIDE, but i do not see how they improve top end beyond what you could get from a gear change. I also don't see how the engine could come with a 'stroked" crank and still be 150cc. I can understand how the engine is a much better platform for a BBK (wider spacing of head bolts, maybe beefier construction). And I can certainly understand if the head is ported better, or the variator bigger, the engine could be a stronger power source. Not trying to throw cold water on what is a cool scoot and a VERY interesting thread. Just trying to understand. |
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