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Post by monique1969 on Jul 5, 2006 22:49:51 GMT -5
is there any way to get/install a speedometer that is more accurate then what comes on the roketa stock.
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Post by lewtwo on Jul 5, 2006 23:58:44 GMT -5
Handeld GPS is one solution. The low end models will cost you less than a $100 and give very accurate speed. Bad news is they will eat up a lot of batteries.
Scooter computer (Lee has one for review) geberal use a magnet somewhere on one of the wheels and fixed pickup. These can be calebrated to be very acurate but tend to be exspensive. Bicycle speedometer use the same principle and you might be able to rig one of those.
Practical solution: Use a GPS to figure out how much your speedometer is off. Then ride accordingly.
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Post by scooterollie on Jul 6, 2006 8:31:44 GMT -5
monique;
Looks like the speedometer/odometer is off on my Bali. Haven't had a chance to check it yet but think it is optimistic. Also, when I come to a stop, the speedometer is still going 20 kph. Takes a sec or two to settle slowly back to zero. Haven't addressed that either. Holds steady at speed and seems responsive to speed changes otherwise.
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Post by Jacine on Jul 6, 2006 10:28:40 GMT -5
If the speedometer is mechanical, you have to know the gear ratio at the attachment, it can be changed to be more accurate. If its electronic, there should be some way to put a resistor in line to give better accuracy. Most speedos on all bikes seem to be off approx 5%. It is the rare bike that is accurate.
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Post by scooterollie on Jul 6, 2006 20:49:25 GMT -5
jacine;
Thanks for the reply. Wonder if there are different gears available for Chinese scoots, and if anyone has gone that route?
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Post by 90GTVert on Jul 6, 2006 20:51:37 GMT -5
My TT150 speedo is almost dead on, but my TT250 is off a ways. I suspect on the 250 it's caused by the use of a lower profile front tire, which I assume they used to compensate for the diameter difference when they use a 10" rear wheel. I'm going up one tire size on both to see if it sures the discrepancy. I also get the added benefit of using better tires (Pirelli) even though the Chinese tires have always worked well. Stan
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Post by fulltilt1 on Jul 6, 2006 21:11:53 GMT -5
So is Barney a Big Dog, and does he make you stay on the porch?
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Post by jose on Jul 7, 2006 16:16:27 GMT -5
Okay here is what you do..
First write down where it is.. off by 8 MPH before 20,
off by 10 MPH after the 25 mph..
Knowing this.. take the dash off, disconnect and pull off the paper scale..
Now.. take a pic using a digital cam..
Take to your PC.. Alter the numbers..
Yes.. You dash may no longer read up to 100 MPH's.. but it is accurate and
lessens the chance of a ticket..
I hope it helps.. takes about 3 hours to do the above.. getting the thing apart is tricky..
Jose'
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Post by monique1969 on Jul 8, 2006 20:11:47 GMT -5
ok so i think i will look into the gps option. so far i am not sure how much it is off but i think it is i had the scoot up to 75mph on its speedometer.
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Post by fulltilt1 on Jul 8, 2006 20:28:45 GMT -5
Dayum it's way off. Probably by about 20 mph, that's almost 25%.
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Post by monique1969 on Jul 8, 2006 20:42:37 GMT -5
yeah i figured but no one was passing me i was keeping ahead of them.
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Post by fulltilt1 on Jul 8, 2006 22:56:10 GMT -5
LOL they were just keeping you lined up in their sights.
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Post by 90GTVert on Jul 9, 2006 0:09:16 GMT -5
He's a very big dawg, but a bit of a wimp. If I stop too fast he rear ends me, so no, he doesn't keep anyone on the porch. Besides, he's a lush. Two beers and he's gone. What a sorry mutt. Stan So is Barney a Big Dog, and does he make you stay on the porch? |
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Post by Admin on Jul 9, 2006 15:30:10 GMT -5
ok so i think i will look into the gps option. so far i am not sure how much it is off but i think it is i had the scoot up to 75mph on its speedometer. I have a hand-held gps unit that I paid less than $100 for on ebay. It's rather antiquated as far as all the features you can get but highly accurate on speed measurement. I can move it from scoot to scoot attaching with velcro. I've found my Matrix 150 speedo is dead on accurate. The RX150i speedo is off by about 10%. Another option to check the speedo is to find one of those radar signs our friendly police put up and clock yourself. Or find a friendly cop willing to point a radar at you. |
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Post by kabala on Jul 10, 2006 17:53:03 GMT -5
I got the same problem.
I just used my GPS to clock my scooter, and at 50 I was actually doing around 35, at 60 I was at 45, at 70 I was around 58. No wonder everyone was driving up my butt.
I would be doing 70 in a 55, and I still had people tailgating me. Now I know.....
So is there a way to actually calibrate these things, without having to redo the speedometer readout gauge?
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Post by monique1969 on Jul 10, 2006 21:33:24 GMT -5
i bought a gps unit tonight on my way home from work. i will find out soon how much speedometer is off.
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Post by medman1952 on Jul 11, 2006 23:38:58 GMT -5
Kabala,
From what you are saying it almost sounds like you have a speedo that is reading KmPH not MPH. If it is you would be fairly close to right.
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