Speed limiter?

[feelthepower01]

Hey guys well after 2 year and a long stretch of scoped out road I finaly decided I want to really see how fast can my 2007 Vmax go I know ive gotten it up to 120 before in a quarter drag so I took off and just pinned it and I noticed I was in fith gear around 7500 and 8000 and the speedo was stopped at a perfect 120 that's it I've never heard of these things haveing speed limiters maybe it's just the 07? Anyone have an answer would be great

 

[customizedcreationz]

I'd say bad speedometer.

 

[Traumahawk]

I've been 125, and I was around 7500-8000. Top speed is supposed 145...but thats at 9500 rpm. So I have never heard of a limiter on these..

 

[KJShover]

+1 sounds like a speedo issue.
with both the stocker and my digital, I've been beyond 130 and it displayed it. However the digital speedo was more accurate against the radar.

 

[feelthepower01]

it cant be a bad speedo my tac and motor will not rev more then 8000 in fifth i had another mile of road and it would not keep going at all
another thing after this is ive been looking at my old drag times and if im under 11.9 in the quarter my speed readout on all of them is exactly 119.8 thats the same speed as i get in a 11.7 run no change aross the board i didint think much of it untill today are you sure that anyone with an 07 is not the same?

 

[Fire-medic]

The "speed limiter" on the VMax, (it has two) is to be attributed to its handling and its aerodynamics.

The latter causes significant not-confidence-inspiring changes to the former. I have compared the thrill of fifth-gear speeds approaching redline to what Slim Pickens, as USAF Major-pilot "King" Kong, must have felt at the end of "Dr. Strangelove," one of my all-time favorite movies. His method of dealing w/a balky bomb-release mechanism is one of the great scenes in all of moviedom!

http://www.imdb.com/title/tt0057012/

Your bike should be capable of blowing through 140 mph w/no issues, unless you are 300+ lbs. Yamaha said 149 mph.

 

[VMax-Mike]

Fire yamaha is correct:biglaugh:

 

[alorio1]

There were some models made with a restrictive type speedo that went to a country that had a restrictive type speedo. It may have been Japan, but I remember reading about it on this forum. Maybe someone else can chime in to correct me or shed more light on the subject.

 

[Traumahawk]

There were some models made with a restrictive type speedo that went to a country that had a restrictive type speedo. It may have been Japan, but I remember reading about it on this forum. Maybe someone else can chime in to correct me or shed more light on the subject.

I think that your right...japan had the 90 hp no V-boost model, and they were speed limited on top of that.

 

[Miles Long]

There were some models made with a restrictive type speedo that went to a country that had a restrictive type speedo. It may have been Japan, but I remember reading about it on this forum. Maybe someone else can chime in to correct me or shed more light on the subject.

I remember reading this as well, but can't remember where.
Easiest way to check would be to look at the wiring coming out of the speedo....there should be only three wires...blue, black and white/green.
If there are more, try disconnecting them, and tape off the ends.
Then go revisit that stretch of highway...............but be safe.
Cheers!

 

[alorio1]

Here is the thread I was referring to..........

http://www.vmaxforum.net/showthread.php?t=10291&highlight=speed+limiter

 

[Traumahawk]

Here is the thread I was referring to..........

http://www.vmaxforum.net/showthread.php?t=10291&highlight=speed+limiter

That might be it....190 Kph = 118.0605 mph.

 

[feelthepower01]

thats weird seeing as my bike was sold in america not an import but i guess ill crack open the speedo and see what i got and ive kinda been wanting a dyna 3000 igniton anyway if you want to play you got to pay i guess

 

[Warp12]

Put it on the dyno and see how much power it is making. They can also run the bike to 9500 rpm in 5th without issue, if it is capable, if you so desire. You should be able to get a test pull for around $50, on a local dyno.

If it is making full power, and has no limiter, then you need to consider rider technique, and perhaps check for strong headwind conditions.

 

[feelthepower01]

Put it on the dyno and see how much power it is making. They can also run the bike to 9500 rpm in 5th without issue, if it is capable, if you so desire. You should be able to get a test pull for around $50, on a local dyno.

If it is making full power, and has no limiter, then you need to consider rider technique, and perhaps check for strong headwind conditions.

As far as rider technique I'm 130 lbs lol so its definatly not my weight and there wasin't a lot of wind that day but I see what your saying on the dyno the speedo may not trip the sensor I'll look into making an appointment

 

[alorio1]

You may be able to disconnect the speeometer cable and see if the tach redlines since it gets the limit control from the speedometer. A auto GPS that reads MPH will also give some useable numbers........

 

[Fire-medic]

As far as rider technique I'm 130 lbs lol so its definatly not my weight and there wasin't a lot of wind that day but I see what your saying on the dyno the speedo may not trip the sensor I'll look into making an appointment

Guys here visit the strip, run 'em hard on the street, and put them onto dynos all-the-time.

Here is some light reading for you before you make that appointment: http://www.vmaxforum.net/showthread.php?t=21873&highlight=dyno+dilemma :confused2:

 

[RaWarrior]

Will it pull to redline in fourth or lower gears?

The Japanese models with the speed limiters cut out two of the coil packs at 180 km/h, so the engine would quite obviously misfire/cut out at the speed. It's not a "soft" limiter like many modern bikes have for governors that retard the timing to cut power output down.

The vmax speedometer reads the front wheel, on a dyno only the rear wheel spins, so that's a moot point.

 

[Warp12]

Modern sportbikes can also use a combination of the gear position sensor and engine rpm to engage a limiter...even without a speedo signal. Even on those bikes, it is very easy to tell when you are on the limiter...the bike runs differently as spark and/or fuel is cut. In the case of the V-Max, I guess the only way it was ever done is through the speedo? I think the real thing to see on the dyno is the power. My bike ran smooth as can be on 3 cylinders, and made 75 hp. That is a speed limiter, right there.

 

[feelthepower01]

Will it pull to redline in fourth or lower gears?

The Japanese models with the speed limiters cut out two of the coil packs at 180 km/h, so the engine would quite obviously misfire/cut out at the speed. It's not a "soft" limiter like many modern bikes have for governors that retard the timing to cut power output down.

The vmax speedometer reads the front wheel, on a dyno only the rear wheel spins, so that's a moot point.

yes the bike absolutlely pulls all the way to redline in lower gears and as far as the engine miss firing when it engages i didint hear anything or anything that sounded like your average ignition timing it just would not rev higher than 8000 im really interested if anyone with a 2007 has ever had this problem ( maybe not a problem but its always a kick to push the limits