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Post by pliam on Mar 31, 2013 9:54:28 GMT -5
Got my scoot all set up, did my PDI, got out on the road, and was fairly certain that I wasn't going 50 in a 25. The speedometer seems to be going almost twice as fast as it should. I'm having trouble figuring out if perhaps I attached it wrong. It feels like it is attached properly, but it must not be. Also, is the part that attaches to the wheel supposed to come apart so easily? Any help would be greatly appreciated. Suppose I should mention it is a Powermax 150. If it's attached properly, is there a way to calibrate it? Attachments:
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Post by nate7504 on Mar 31, 2013 11:30:15 GMT -5
Yeah that's about normal for china scoots mine is off sometimes by 5 and as much as 10 mph,I don't think they can be calibrated,and yes when I took my wheel off once mine came apart just like that,I just use my iPhone with a GPS speed app,that's allot more accurate.
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Post by xylon on Mar 31, 2013 13:14:13 GMT -5
hm maybe you can take the glass off the dash and write the correct speeds under the speedo needle
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Post by Deleted on Mar 31, 2013 14:17:37 GMT -5
I went with a digital bicycle speedo...much more accurate.
I'm not sure if that was a joke or not xylon, but that was funny as . +1
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Post by JR on Mar 31, 2013 15:53:55 GMT -5
The speedometers on these are notoriously optimistic. I have never heard anyone say it was off by 50% though.
The easiest and cheapest fix is to install a bicycle speedometer, they are easy to install and to calibrate. Just follwo the directions on the package.
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Post by prodigit on Mar 31, 2013 18:18:04 GMT -5
Actually, the easiest way is to paste stickers on the plastic speedo, indicating the correct speeds.
Other than that, a bicycle speedo is a good idea, however, when you're riding, the black and white LED displays are very hard to read.
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Post by devo344a on Mar 31, 2013 19:18:52 GMT -5
Its metric if its going approx 50 kilomoters in milesperhour its approx half or 25 on the inside of the outer#s is MPH
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Post by JR on Mar 31, 2013 20:51:53 GMT -5
Its metric if its going approx 50 kilomoters in milesperhour its approx half or 25 on the inside of the outer#s is MPH Duh, I forgot about that, you can order a MPH speedo, and then you'd probably be more like the normal 5 - 10% off. |
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Post by rockynv on Apr 1, 2013 4:18:27 GMT -5
You are most likely reading the KPH which are the larger of the two sets of numbers on most while some are only in KPH and have no MPH markings. Otherwise they may have included the pickup for a bike with larger wheels and you need to contact the seller to get the correct speedometer pickup for your 150.
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Post by pliam on Apr 1, 2013 13:30:50 GMT -5
I know I should have included this to begin with, but I am not looking at kph. I am looking at the smaller numbers, on the inside arc. When I hit 45mph actual, the needle pegs out, and there's no way I'm able to hit 120kph on a 150, unless I went off a tall cliff.
The numbers, as well as I can approximate, are, in mph
Actual:Reading
25:40
35:60-65
45:80
I will look into a bike speedo.
And yes, for a minute, I did seriously consider xylon's solution.
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Post by JR on Apr 1, 2013 13:35:14 GMT -5
Xylons solution has been done by a lot of riders, but if it is pegging out the speedo the gear at the hub must just be the wrong one, you might just order one from somebody and replace it and see what happens.
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Post by prodigit on Apr 1, 2013 17:06:36 GMT -5
your actual speed vs speed on display look very much like the actual speed displayed in MPH compares to the speed read in KMH.
25MPH = 40KMH
45MPH = 73KPH
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Post by rockynv on Apr 2, 2013 3:39:13 GMT -5
If it is a new bike then call the company that you purchased it from and have them send you the correct speedometer parts for free. Why pay for something thats they should be covering. At least give it a shot and see what comes of it. They may surprise you and do the right thing.
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Post by nulldevice on Apr 2, 2013 9:08:58 GMT -5
Just consider the speedo as part of the charm of a Chinese scooter.  To read it as MPH divide the speedo reading by two and add 10%. I communed with my calculator for a while and the indicated speed is about 1.6 to 1.8 times the actual speed. It doesn't matter the dial says it is MPH, it is actually indicating KPH. Are you sure you are reading the correct scale? Is the odometer off as well? The part that came off is the grease seal. Yes, it is supposed to come off easily. |
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Post by Deleted on Apr 10, 2013 9:55:38 GMT -5
I moved to a town that has speed limits higher on every street than my sccot can go! Never look at the damn thing!  |
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