A question about power?

Should the bike be able to raise the front wheel when going wide open and crossing the vtec range in first gear?

 

Depends on many things. Short answer is yes, ive done it. But I had to work at it to do it since im 220lbs.

A better question is why are you asking?

 

Once the bike has reached operating temperature, if you really get on the gas in first, and sometimes second, the front can indeed lift. Whether that is a good idea, or recipe for disaster, only you can tell.

Take care




SkiMad

 

scotts damper if doing that-but that's just for kids who like to show off.:tongue-new:

 

All depends on how quick you are opening the throttle and at what RPM. But the short answer is yes. I'm a 12yr old trapped in a 43yr old body and quite frequently lift the front tire. It's a heavy bike, so you have to learn the sweet spot in the rev range and be very abrupt with the throttle(you can also get the wheel up by slipping the clutch but that's another conversation). I would not suggest it unless you have been riding bikes for a while and have good bike and throttle control because it can end badly if you don't know what you are doing. If you are determined to learn how so you can charm the panties off of the opposite sex:tongue-new:, find a empty parking lot to practice in.

 

And find a crappy bike to learn on, no sense destroying your vfr if there is a cheap throw away available.

 

If you want :vtr2: drop couple tooth in front and swap the rear with 95 and you be wheelie all day long.

 

I wasn't asking how to do a wheelie, that's easy, I am trying to gauge if my bike is all there in the engine basically. So as soon as the clutch is fully released I open the throttle all the way at say 4k rpm, when I cross vtec SHOULD the front lift and if so how much should it?

 

It may not lift doing that. Problem is your weight is leaning forward and going from 4000 to vtech (6400/6800 year specific) has a horrible flat spot in the power band.

If you really want to know if your engine is producing find a steep (12 or more percent) and climb it from dead stop in 5th gear (closest gear to 1:1 ratio) your bike should lug a bit but should climb it without issue. If it stalls then you may have released the clutch too fast or not enough power from engine.

In short dyno it.

 

8-9k in first, quick chop and snap open. It will power wheelie.

 

^ what Gator said.

+1 to Zen biker "A better question is why are you asking?"

Do you suspect something is wrong?

I think there is way to many variables in gauging engine performance based on front end lift.

 

I've never had the front wheel off the ground, despite numerous "throttle pinnings" in 1st gear. Front wheel sure does get light though, with a little extra help from the front forks I wouldn't be surprised if I could quickly roll on from 8k+ to get the wheel up.

 

https://www.youtube.com/watch?v=kuK-EQ81fSc

 

+1 to what Zen said....There's a flat spot in there, PLUS I don't know that vtec engagement offers enough bump in power to lift the wheel all by itself(doubtful). I know I have to be purposely attempting to loft the front tire for it to come up in first or second gear and I'm usually up around vtec engagement or higher when I do. Plus some days my bike seems eager to do it and other days it seems down on power. Could be difference in gas, air temp, etc... Like previously said, too many variables to say for sure. Find a dyno and see what it's putting down to know for sure.

 

Get a 5th Gen and wheelie at will.

 

just be careful wheelieing a CBS equipped bike, if you over do it & have to use the rear brake to save it, you may lock the front before the bike comes back down with bad consequences.

 

I was only asking because it is an easy way to gauge where my bike is on power compared to everyone else, if everyone else has wheels coming up and I don't then I need to look at the engine for some more work. I was concerned it was down a little is all but since wheels in the air are not the norm that is good. I do know my bike will get to 145mph with a surprising quickness, and before you say anything it was on the track.

 

Some of our back hiways are good enough for that kind of speed, if the fuzz is out then your screwed though.

 

I got a 3 mile straight, flat back road and it never has cops, I been up there but I never try for a top speed and always back off once I shift into 6th, still shifting into 6th is 145mph~. If I had a 3 mile straight track I would do it though.

 

Where I used to live in manitoba I had 15miles of freshly paved straight. It was nice since the cops almost never went out there, at flat out I found the engine just stops pushing around 155/160mph. Almost like the torque drops off. A little pissing with the system and I made 165 once then had to have the ecu factory reset as it went into limp mode and stayed there. I know this bike can make the power but its firmware locked. Looking at an aem unit to replace the factory ecu.