I know I will probably get shit for this from some but oh welll....
I am beginning to think that the 919 has a soft speed limiter to 142mph...
I live in Fla and have miles of straight stuff that opens wide at night with no traffic, I put a f4i cluster on my bike and speedo healer. It is dead accurate verified with gps. the bike will get up to 138 no problem, the next 4 mph take a little bit but not that long, once there you can feel the bike picking up steam and then dropping back down.
I am beginning to think that the 919 has a soft speed limiter to 142mph...
My internet-guess is that there is no speed-limiter.
Rather, aerodynamics are your speed-limiter.
The bike makes 105hp, similar to 600 #'s.
Top 600's hit... 150-155mph? With muuuch better aerodynamics.
If the 919 did have a speed-limiter, my guess is it's purely a safety issue. Perhaps the bike could become unstable at greater speeds. (Although I know it's been mentioned around here how unflappable the geometry of the bike is.)
stock gearing has a theoretical top speed of 151.8 @ 9500. he hits 146@ aprox. 9700 in the above video.
the 9er's speedo reads @ 8% high so something is fishy.his speedo should be aprox 157 mph at that rpm.
jeef what rpm are you at top speed?
__________________
'04 Honda 919, Candy apple red met., 17/44t sprockets,f-16 windscreen,delkevic ss exhaust,Tharbars,givi engine bars, billet alum. led turns w/ running lights,red adj.levers from china, bar end mirrors,grip heaters,adj. foot peg brackets,adj. bar risers,dunlop Q2(that are better than your pp 2ct,lol)bike wired for gps and phone charger
My 9er has gears that supposedly make it accurate, and I've had mine to 150.
I just got my ram mount in the mail, so I'll see what top speed is with gps.
A naked upright that weighs 460 ish # before rider, and has 110 HP @ the crankshaft at sea level.
Hmmmm,
I'd say about 15 % short of the required bhp to be able to touch 150.
i've hit 143mph and my front end started to get the death wobble. So i dont do that anymore.
A 919 should be dead smooth stable at top end, hands off so to speak, even though I'd suggest keeping both hands on.
Are your fork tubes raised up in the clamps ?
Steve and I had them pegged out at about 145 on the speedo which with my 17/44 is not all that inaccurate compared to the OEM gearing which is very optimistic. Still not too bad considering I had saddle bags a Ventura rack and cooler on the back
With stock gearing the speedo is 7-8% optimistic at freeway speeds, but that error grows as the rate increases so by the time you are doing an indicated 130mph the error can be as high as 14% or more.
When you install the taller gearing of a 17T you are basically correcting that inherent error built into the speedo.
"Security is mostly a superstition, it does not exist in nature: avoiding danger in the long run is no safer than outright being exposed. Life is either a daring adventure or nothing."-Helen Keller
A 919 should be dead smooth stable at top end, hands off so to speak, even though I'd suggest keeping both hands on.
Are your fork tubes raised up in the clamps ?
BHP required to overcome a linear increase in speed increases by the 3rd power.
Meanwhile, the engine's BHP output with increasing RPMs as you approach peak BHP, is fairly linear in a 919 BUT near peak, becomes non linear as it starts to go flattish.
So, as you crowd the power based aerodynamic on a 919, the power needed is climbing steeply BUT your engine power available is instead increasing at an ever lessening rate. This is the classic reason why the last few mph of any top end run is at a walk up rate in terms of the actual rate of acceleration.
Run ups to 130-135 on the road don't take long.
I've never found a stretch long enough and safe enough (deer on the sides of the road included) to let it fully wind out.
I sense that it can crack an honest 140 here where I am, that being 3500 ft altitude.
A sea level run should theoretically add another 5 mph.
I figure sea level limit is in the 143 -145 band, if ideally geared, and also being bike and day's air dependent. I think a sharply mapped bike with decent slip ons and lower bars like ULs should be good for 1 or 2 mph, that being part of my setup.
theres also the issue of the rev limiter no one has spoke of
go bang your gears at a dragstrip, you'll know then
IMHO, fuck street speed, i save it for the track, or just passing a yayhoo when needed (in my case, a lot, LOL!!)
__________________
'04 Honda 919, Candy apple red met., 17/44t sprockets,f-16 windscreen,delkevic ss exhaust,Tharbars,givi engine bars, billet alum. led turns w/ running lights,red adj.levers from china, bar end mirrors,grip heaters,adj. foot peg brackets,adj. bar risers,dunlop Q2(that are better than your pp 2ct,lol)bike wired for gps and phone charger
Linear Mode
Chevy Camaro Forum
Ford Mustang Forum
Jeep Wrangler Forum
Volkswagen Touareg Forum
Land Rover Defender Forum
