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Post by jstich on Sept 12, 2016 21:39:40 GMT -5
manual sez 10:5 compression ratio! Hard core! JK
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Post by jstich on Sept 12, 2016 21:41:58 GMT -5
However the acceleration is terrible.
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Post by humanshield on Sept 12, 2016 21:42:45 GMT -5
50 mph on a 49cc 4T not that strange. I've hit 50 indicated on mine a few times with only an iridium plug and needle adjustment. Correct. Forget all that messy motor work! Just invest in a speedometer that gives you the desired results  |
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Post by jstich on Sept 12, 2016 21:54:10 GMT -5
My speedo is off by about 5 mph. That's still 45 mph. Im thinkin itll settle at 55 mph max when Im done. 2 strokes can get up to about 65 mph or more right?
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Post by kagetenshi on Sept 12, 2016 22:42:16 GMT -5
jstich what year and model scoot do you have?
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Post by jstich on Sept 12, 2016 22:52:18 GMT -5
jstich what year and model scoot do you have? It's a 2014 Dykon Express JK50QT-A |
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Post by Deleted on Sept 12, 2016 23:39:16 GMT -5
I'd say your speedo is off a lot more than 5mph, you have a stock 50cc GY6 on a generic chinese scooter, sorry, you can not change the laws of physics...
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Post by jstich on Sept 13, 2016 0:20:02 GMT -5
Stock speedo is 5mph faster than the speed monitors in school zones.Maybe theres a bigger difference at 45 mph.
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Post by Deleted on Sept 13, 2016 1:44:46 GMT -5
Factory/MCO says 30, probably more realistic.
Be interesting to see how many riders have gotten tickets because of a cheap speedo. I use a GPS and wave at the cops.
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Post by niz76 on Sept 13, 2016 2:40:36 GMT -5
My speedo says I"m doing 80mph. GPS says 60.
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Post by gsx600racer on Sept 13, 2016 5:13:48 GMT -5
My speedo says I"m doing 80mph. GPS says 60. Your gps is off.  |
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Post by thxcuz on Sept 13, 2016 6:53:47 GMT -5
The only way mine will hit 50 is when I throw it off the cliff
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Post by humanshield on Sept 13, 2016 7:47:26 GMT -5
Stock speedo is 5mph faster than the speed monitors in school zones.Maybe theres a bigger difference at 45 mph. I would say so. School zones are usually 15 mph and to be off by 5mph at that low speed I would guess that your error gets progressivly worse as speed increases so you could be off by as much as 15-20mph at top end. I've seen scooter speedos that are reading 80mph when the scoot is actually doing 35mph. Also, people sometimes overlook the fine print right on the speedometer itself.... Km/hr |
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Post by Deleted on Sept 13, 2016 9:48:58 GMT -5
I hit 53 mph indicated on my stock bore gy6 and my real speed is somewhere about 37-39 mph. The Chinese speedos are off at least 20%, if not more. The good news is...we actually have less miles on our scoots than the odometer reading tells us.
Bill
PS Yes, it is a percentage so, the faster you go, the more it is off.
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Post by thxcuz on Sept 13, 2016 13:18:23 GMT -5
I got the engine off the scoot. For once I'm going to look at it on the bench so I don't have to bend down as much.
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