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Post by scootercy on Sept 29, 2020 22:54:02 GMT -5
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Post by tortoise2 on Sept 29, 2020 23:26:25 GMT -5
One alternative to excessive engine RPM's is selecting a scooter model that is actually compatible with your speed expectations and leaving it stock . . as compared to "a dog chasing its tail" performance enhancement strategy!
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Post by scootercy on Sept 29, 2020 23:37:05 GMT -5
One alternative to excessive engine RPM's is selecting a scooter model that is actually compatible with your speed expectations and leaving it stock . . as compared to "a dog chasing its tail" performance enhancement strategy! In my state a 49cc is all I can legally pilot for another few years. Don't hate the player... |
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Post by aeroxbud on Sept 30, 2020 8:25:24 GMT -5
It's a bit like the Malossi force Master then. But cheaper.
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Post by Steve B on Oct 1, 2020 9:13:40 GMT -5
Very cool, one thing i wish they would have added a 5" cell phone like screen. So the user can see exactly what they are adjusting instead of looking at a bunch of 1's and 0's. I thinks its real cool that you can adjust fuel flow at multiple rpm ranges. |
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Post by GrumpyUnk on Oct 1, 2020 10:28:56 GMT -5
For this little gadget to work, a necessary bit of equipment is required, namely a fuel injected Zuma(of the proper model year). I hope people realize this is not for a china carbureted 139QMB/GY6.
There are kits on aliexpress that can be wiggled enough to fit a 139QMB, but they are over $200, and essentially will wake up the hummingbird hiding inside the shroud. You will have a good running engine, but likely not much more power. Fuel economy will likely not change much if you are at factory jetting, as they seem to run them pretty close to the edge of being lean(some not all).
Did not look at the video yet, but will.
+5 min. Watched enough to know this will let you tune the AF ratio over a rev range with 500rpm increments, and set the limit by cutting fuel at max rpm. I don't know if a single rider can improve on Yamaha engineering with this product. Yamaha must meet emission standards, and that would tend towards lean, but they cannot run too lean or they'll burn the piston... expensive warranty claim, right? This will take you out of warranty if installed, FWIW, so be aware. More or less, unless they tuned the thing so lean it is punching air, I don't know how it can improve performance. Why would Yamaha do that? Their engineers have designed engines for other makers, just like Porsche engineers, so are familiar with performance. Maybe I am missing something.
tom
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Post by scootercy on Oct 2, 2020 18:23:52 GMT -5
. I don't know if a single rider can improve on Yamaha engineering with this product. I agree, IF you remain bone stock. Add intake and exhaust.... then there is something there. Biggest for me is the Rev limiter, I spend half the time riding bumping against it. Top speed at 43, but I know a few more mph are in there if the computer allowed. |
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