VFR Top Speed is ????

I forgot to mention...

1. My 25th Anny Interceptor has ABS which adds about 11.5 pounds (likely not a big top speed issue)

2. Even if I had another mile of runway, the bike was maxed out (so it's not like I ran out of room)

 

bla bla bla...
6th gen speedos are off by approx 7% and the older ones were probably worse

by dropping 1 tooth in the front of a 6th gen makes it around 13-14% off. thats what i had to calibrate my speedohealer at. with a gps to get it right.

theoretical top speed of a 6th gen is 177 crunching the gear ratios at 12k
my 07 stock on the dyno did 170.3mph at 12k so looks like his dyno could of been off just a bit.
but to get a stock one over 155 on the street with resistance is going to be very tough.

for everybody saying you've had yours over 175+ your full of $hit. even at an indicated 175 that would be more like 163ish

im only 150lbs with gear and have had it up to around 145+ with the speedo healer.
she had a bit more in her. mods are 15th CS exhaust/filter/PC3/de snorkeled

i believe the top speed to be around 150 maybe a little higher. stock that is.
with some mods and the gearing she maybe able to make it a little higher. only time will tell.

Im going to try and make it down to that standing mile event later this year.
Im only hoping to be able to hit mid 150's with even lower gearing.
i saw a video of a new FZ1 and he was only able to do 150ish with 130+hp and less weight. his sixth gear was to tall. didnt have much left shifting into 6th.
so i hope that with going -1F +2R 3.00fd compared to 2.69fd will give me the ability to hit the mid 150mark in a standing mile.
with an 11.5% reduction in gear ratio her theoretical top speed is 161.5 with a 190/55/17 rear tire.

ill be sure to post details and video if i get to make to NC this summer to try it out.

 

hit 168mph on the gps, this was at a private airstrip outside columbus,oh. Hit 155 couple of times on interstate.

 

I have and fifth gen with a KandN filter, Erion slip on, rk chain and sprocket with a power comander, power race med compound tires. Had it going 155 but it started to shake bad, the kind that makes you drop rabbit pellets in you undies. Not sure how much more old girl had, sure it still looked like a red flash. Would love to get the tires balanced better and give it a run at the track and see what it tops out at.

 

97 VFR i have had it up to 163 or so but at that speed i was dragging my brass behind me Had i known the fuel shutoff hits at 12,300 i would have pushed it to 170 or so. And if anyone tells me its a fish story i will do it again with a vid cam to prove it, Its a shame these bikes are under rated for speed because i hang with the high end bikes all day long.

VFR love for LIFE!

 

UNLESS YOU HAVE A VIDEO OF YOUR TOP SPEED RECORDED BY GPS OF IT IN PROGRESS I CALL :bs:

 

got badly spanked by a brand new R1 this weekend. idid manage to stay hot on his heels in the corners until my suspension turned to mush. was a hot day well into 30 s
the harder i rode the vfr the worse the suspension got. i wont talk about the straight aways. but then what do you expect R1 is 100lbs lighter at least 60 -70 more hp.

97vfrnut i would love to see your bike do 170 !

 

Reading this has been fascinating.

Overall, by my math, it looks like the speedos are consistently 10% fast. I'm seeing lots of people with GPS 135 and an indicated 150 at the built-in limiter. 10% seems standard for most bikes (my '86 is dead-nuts 10% fast according to the radar signs).

I think I've maybe hit 90? I dunno. I'm a novice, on a 22yo bike, and no opportunities (or really desire) to go all-out unless I'm on a track, or on I-80 in northern nevada. I've watched a GSXR 1000(?) pull from me (at WOT) on an on-ramp, which was fun (I smoked the car behind me, his bike smoked mine). Although if I'd not flubbed the 1-2 shift, it wouldn't have been nearly so embarrassing.

 

Well I got a PM from someone that is convinced his bike is a Busa or something. He wanted to borrow my GPS to prove it ??? Well if you dont have a gps to mount on your bike you probably dont have a Video camera either, Im not sending mine out. Maybe a friend or two could help you out on these claims. If your speedo is off by 10 % at 65 mph then at 130 it will be even further off. I find my speed on radar units is pretty correct around 35 mph but the faster I test it the more its off. So mount up your video cameras guys and get a shot of that GPS with on your bike (yes we can tell if its a VFR by the dash) and lets compare those #'s . ope2: Just a blessing for those that may exceed 170mph :hand:

 

How Fast Re-Visited Again

IS anyone willing to accept the fact that its possible a VFR will go past 155?
As i recall i didnt say my bike would beat a busa i simply said i could hang with one.


But in all fairness i will get a GPS and just see how in turns out in the wash so to speak either way it damn fast and the more open your throttle is the less common sense seems to hang around.

Even if i do prove my bike will do more than 155 next someone is going to tell me that its not a VFR its something else with a VFR body on it. IS there no end to the narrow minded people who can not accept that it can be done?

 

Not if it's stock.

Assuming a 12K redline, and computing the mechanically redline limited top speed (assuming you had the HP to get there), these are the maximum top-speeds for each generation:

2nd: 169mph
3rd: 165mph
4th: 148mph
5th: 146mph
6th: 146mph

The variance is solely due to final drive and the rear tire selection. The older bikes have taller rear tires, so more distance per rev. The older bikes are gear a bit taller in the final drive.

Go up a tooth in the rear, and down one in the front, and you can gain 10% in the final speed.

Now, the next question is, how much HP do you have, and how past redline are you willing to take it?

*****

Another math note. If the speedo is off by 10% at 60mph (actual 60, indicated 66mph), it's still off by 10% at 120. (actual 120, indicated 132). Most of the speedos seem off by about 10% from reading this. Lots of roughtly 150 indicated, and 135 actual postings. Which is about 10% off.

*****

Can a VFR hit 160 or 170? with the right gearing, redline in 6th gear, and enough hp, yeah... I'm just not one that can comment on how much HP that needs. And the size of the rider matters a lot at those speeds, too. A small guy presents less of a frontal area, and there's a linear relationship between frontal area and wind resistance.

 

I wonder how a 2nd gen can hit 170mph? its got a smaller motor and less HP and TQ so i get the math part to a point but there is no replacement for displacement. And you are correct as i have not listed what my bikes has so everyone wants to assume that its stock and i am full of crap.

Gearing or not if i put the same gearing on my VFR as a 2nd gen has it still isnt going to change my top speed by alot if any.

 

I wonder what the guy on VFRD with the supercharger can pull in? lol. with 140hp I'm sure he as the power...but I dunno about the physical limitations of the gearing...

 

I had my 08 Vfr on I-5 north of the grapevine up too 162 indicated on the speedometer. I was running with a GSXR 750. She still had some left in her too!!

 

SEE thats what i am talking about!!!!! it can be done thank you for putting in your 2 cents

 

I have gone 150 on my 02 and it was still climbing. I heard that these bike can go 180 with that gear ratio. But I dont think that I want to find out!:strong: Now I have a 15 tooth in front for the track and it will do around 165 but it gets there a lot quicker. I smoke the 749s on the straights:vader:

 

oh,and the comment about the dyno. they dont lie!!!! They put real hp and trq to the ground with real mph. Only thing that is different is road wind vrs dynos no wind. So it is possible for the bike to do 180 on the dyno.
I would not want to be the one to bust the dyno places for there mechines to not read right . there would be some bad gearhead smashingsgoing on.
I also had a 1991 zx 10 with little mods, carb work and Mussy ex and on the dyno it did 185 with the clutch stating to slip. I really dont think i could do that on the road with the wind pushing back at me. It also had stock gearing!

 

Ok, I dug this up:

Wind Tunnel : Hayabusa vs. ZX-12R

"To achieve 187.5 mph, the Hayabusa needs 147.6 horsepower to
overcome drag alone; the 12R needs 161.3 horsepower for the
same speed."

Wind matters a lot.

And this explains how to measure the drag of your own vehicle:
http://www.instructables.com/id/Measure-the-drag-coefficient-of-your-car/

anyone want to figure out the values for the different generations?

 

My stock 07 hit 140 (indicated), with a little left in her (10k rpm). Fast enough for me...

 

As I have previously said in this thread, I have to call bull s--t on some of these claims. Bought my 02 VFR new and am fairly familiar with it. My riding buddies have had various bikes CBR1000, Hyabusa, ZX-10, ZX-7, Triumph Sprint ST, and with the exeption of the Triumph, they all left me in the dust.....easily.
Now in the twisties I could keep up with them, I just had to work harder, but when the road opened up, the VFR just flat out cannot hang with a literbike, much less a hyabusa. I attemped to catch the Hyabusa rider not paying attention and pass him. I was going around 85-90 when I pulled even with him. He gunned it and pulled a wheelie (accidentally) at 90mph as he left me behind. Now that I have a literbike I can say from first hand experience that there is just no comparison.
Love the VFR for what it is, an amazing sport touring bike that is a blast to ride, but leave the outlandish claims for the harley riders bragging about how many beers they drank and then somehow rode home.