Ninja H2 SX Top Speed

[Champ87]

all factory speedometers are off usually 3-4% ( like this) some as much as 6-7%

Meanwhile...the odometer, trip meter, etc. are (most likely) pretty accurate because they don't have the same error programmed into them.

[vcyclenut]

all factory speedometers are off usually 3-4% ( like this) some as much as 6-7%

Meanwhile...the odometer, trip meter, etc. are pretty accurate because they don't have the same error programmed into them.

I can understand the speedometer being optimistic

if the speedometers were dead nuts on and someone changes tires to a taller profile then the speedometer would be pessimistic and if someone got a ticket for speeding while their speedometer said they were below the limit...sounds like a lawyers wet dream

[THOR]

GPS results for the Kawasaki's OEM none touched.

H2 - 231 ps 298.97 km/h weight 238kg

H2 SX - 200 ps 294.24 km/h weight 260kg

ZZR1400 - 200 ps 298.73 km/h wieght 269kg

[cOoTeR]

all factory speedometers are off usually 3-4% ( like this) some as much as 6-7%

Meanwhile...the odometer, trip meter, etc. are pretty accurate because they don't have the same error programmed into them.

I can understand the speedometer being optimistic

if the speedometers were dead nuts on and someone changes tires to a taller profile then the speedometer would be pessimistic and if someone got a ticket for speeding while their speedometer said they were below the limit...sounds like a lawyers wet dream

Have you taken advantage of the long straight (closed course) roads in your area and gotten a GPS speed of your bike de-restricted yet?

[vcyclenut]

no, it will run out of gear before power , I will once I get the new sprockets

[cOoTeR]

no, it will run out of gear before power , I will once I get the new sprockets

If the information in gearing commander it's correct the stock redline should get the bike to 192mph (theoretical) once it's de-restricted. A 13,000 rpm redline should get the bike to 200mph (theoretical). Is something wrong in the gearing commander inputs I used?

[Champ87]

Is something wrong in the gearing commander inputs I used?

Those numbers seem correct. The H2 SX Gearing Calculator spreadsheet linked elsewhere on this site gives the same numbers. I recall that during break-in 6,000 rpm gave around 93 mph. That corresponds with the spreadsheet.

[vcyclenut]

its correct, I am just not comfortable with the current weather doing a long top end run over 12k, could just me being paranoid but the boost temps go up so fast on boost, I just don't think it would be good for it to do an extended run with the load , boost and rpm's that high.

[cOoTeR]

The numbers that Thor posted show it topping out just shy of 183mph stock. Do you guys think that's a power/ drag issue or a limiter?

[Champ87]

The numbers that Thor posted show it topping out just shy of 183mph stock. Do you guys think that's a power/ drag issue or a limiter?

I would guess that's the limiter. A while back DeRox posted up a video of his H2 SX running an indicated 299 kmh (186 mph) on the Autobahn. His video also has GPS speed that confirms the speed does not increase when the limit is reached - even though it's not quite at the redline.

Interestingly, the GPS speed only shows 284 kmh when the speedo is at 299. That's about 5% error and a significantly lower speed than the 183 mph (295 kmh) listed in Thor's post.