Geared down for stunting/acceleration maybe but that's 30km/h lower than I reckon you should hit.Originally Posted by slopster
Were you hitting redline in 6th? What RPM were you showing?
Tsar Bomba
Geared down for stunting/acceleration maybe but that's 30km/h lower than I reckon you should hit.
Were you hitting redline in 6th? What RPM were you showing?
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No don't think gearing has been altered. Was near the redline in 5th and still had 6th to go.
Have just done that jumper mod havn't had a chance to test it.
Forum whore
Well there's your answer, not in top gear and not at redline (which most sportsbikes will do in top.)
Hired tool
230 is about right for 5th gear.
Ok im coming out of my closet just this one time, I too kinda have a curvy figure which makes it worse beacuse im a guy. Well the waist kinda goes in and the bum pushes out. When I was in college the girls in my year would slap me on the arse and squeeze because apparently it is firm, tight...
I wear jeans
.....if I find this as a signature Ill hunt you down, serious, capice?
Long Haired Yobbo
www.cliffhanger.org.nz
There are sprints in september.
Best place to test it objectivley and safley (er)
the 636 in the last results or results before that got to an indicated 290.
Heinz Varieties
Homo Sapiens Vulgaris
Oh, don't get me wrong. It's not that I wouldn't expect the bike to go faster than 233 km/h... It's more saying that 233 km/h isn't fast enough (for the road). But yeah, I'd be wanting my bike to perform to spec or above as well...
Using a GPS to measure topspeed is probably the best method, but there are heaps of variables with a GPS and unless you're used to using them then it wouldn't be hard to mess up the reading. Slopster - how did you do the measurement?
It is preferential to refrain from the utilisation of grandiose verbiage in the circumstance that your intellectualisation can be expressed using comparatively simplistic lexicological entities. (...such as the word fuck.)
Remember your humanity, and forget the rest. - Joseph Rotblat
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Yeah top speed is too fast for the road but topspeed is the only way other then a dyno to objectivly measure. Its easy to let your mind play tricks and you can't really judge accelleration by the seat of your pants.
Used the gps just taped to my tank and displaying speed I didn't go hard stayed within licence keeping speed and compared the gps speed with the speedo to get my error %. The gps does respond slowly (only updates every second) so you need to keep a steady speed to do this accurately.
By the way it seems that all I needed was the jumper mod I hit 269 indicated on the same bit of road so just goes to show how much a US ecu can strangle the bike.
And BTW Mikkel are you still interested in my old gsxr? Sorry to see you crashed you bike the other day. The gsxr does 285 indicated...
Tsar Bomba
That's more like it
e mare libertas
But she says it so believably, doesn't she?
[YOUTUBE]xDACvcZ7MWI[/YOUTUBE]
kiwibiker is full of love, an disrespect.
- mikey
e mare libertas
Not really heaps, as such.
So long as the GPS has a fix, the only two relevant factors would be:
A. GPS receiver software only reports speed in the XY plane - vertical positioning is too inaccurate for speed calculations, so you can forget about accurate speed if you're not on the flat.
B. In the XY plane, positional accuracy is guaranteed to within 5 metres; practically, it's usually within 2 metres.
Within, say, the SiRFstar GPS modules, speed is reported every second based on a simple calculation of how far away the current position is from the one calculated a second ago, so if you want an accurate speed you'd best be travelling in a straight line, too.
(I know this because I've read the code.)
So if you, say, take a 2m accuracy average, and a vehicle's travelling at 100kph, it'll be moving at 27.8m/s, giving you the possibility of about a 7% error.
However, the nature of the up-to-2m error tends to be a constant across many readings, and only shifts gradually over time. The error variation between two successive GPS positions a second apart is usually almost nonexistent; more in the order of 20cm, max, than 2m.
I'd therefore expect a < 1% error in reported speed from a GPS at 100kph on the flat, decreasing and increasing linearly as the speed being measured went up or down.
A GPS top-speed reading on a motorcycle being ridden in a straight line on the flat would therefore be pretty darn reliable, most likely in the order of a tenth of a percent or so off perfect.
I'm not a GPS receiver designer, though, so for all I know there are hidden quirks and shortcomings of the system that I'm not taking into account. But given that GPS is regularly used to pop cruise missiles directly up the arseholes of ragheads hiding behind mountains a hundred miles away from the launcher, with the only difference in military/civilian signals being the nature of that guaranteed maximum positional error, I'd say that I'm probably making a good bet.
Basically, it boils down to, no guarantees, but the output has a very high chance of being highly accurate.
kiwibiker is full of love, an disrespect.
- mikey
Homo Sapiens Vulgaris
Good to see you got it up there - didn't realise you had a US ECU.
About the GSX-R - sorry I bought the '96 ZX7RR I was looking at the week before you put yours for sale. It came back on trademe a couple of days after the auction ended due to some issues at the other end.
I think one bike for March should be enough
Best of luck with the sale mate, she looks like a fine bike to me!
I was thinking more about what reference system you use - the coordinate system that the GPS operates out from. Can't remember the bloody terms - but it has to do with projections since the earth is not perfectly round and such, so you use different algorithms depending on where you are and what you're trying to achieve...
It is preferential to refrain from the utilisation of grandiose verbiage in the circumstance that your intellectualisation can be expressed using comparatively simplistic lexicological entities. (...such as the word fuck.)
Remember your humanity, and forget the rest. - Joseph Rotblat
Hardcore Biker
My 05 6rr did an indicated 285. It had a power commander with all the addons an had been properly tuned. It had to be telling porkies but it still went fast enough to loose my licence for 28days.
"I have a bread maker, so I know a little bit about how yeast works"
Hardcore Biker
Hey Harry BMy 05 6rr did an indicated 285. It had a power commander with all the addons an had been properly tuned. It had to be telling porkies but it still went fast enough to loose my licence for 28days.
ive got your bike and can vouch for the k's...an i still got my licence.
Shit itself the other day...all good though as its been getting a good caning
Just a typical zx i suppose..lol
CNC Machining,Precision Engineering,Thermal Coatings/Metalization,
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Hardcore Biker
Its good to see she is still looking as good as when i sold her. I see you went back to the original screen. It kinda makes me sad to see her again, damm its a sexy bike.
What problems did you have when it "shit itself"?
"I have a bread maker, so I know a little bit about how yeast works"
Hardcore Biker
Broke a 2nd ring on no1 piston,broke out a bit of the ring land as well.Everything else sweet ass bore head etc,just got it back together and its going heaps better but i'm not 100% happy with it will get it set up again on a dyno...
Its a better bike to ride with the other screen on,seems to be slipperyer...
Better airflow for me but i'm only a short arse...with a big head...lol
CNC Machining,Precision Engineering,Thermal Coatings/Metalization,
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