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On my Gen II the Speedo error vs. my GPS is pretty significant. Until I got the GPS I'd get on "the freeway" (I-15 -- the ONLY freeway in this part of the world :D ) and think--"man--everyone is haulin' *** out here today". I'm a full 5mph off at 75. So if if the error is consistent, I think my speedo could be 10 off at 150.

 
Three years ago near Alpine, Texas I made a top speed run on my '05 FJR w/o bags and managed 148 mph (GPS). It wouldn't go any faster. Terrain was flat but with the elevation over 5000 feet I couldn't go faster. I haven't tried a top speed run anywhere else. On the way home on that ride I was fully loaded (MotoFizz large seat bag, saddle bags and tank bag) when I passed a group of riders at about 120 mph. The bike started a speed wobble that was a bit scary. I managed to slow it down safely and kept it below 100 mph the rest of the way home. I don't recommend going really fast if your bike is loaded down with gear.

 
I thought all of you law-abiding FJR riders needed another update on this. I just got done doing a nice run. 52 degrees out. Very light winds at my back... probably insignificant. Running a Cee-Baily's sport shield. No bags. Reserve fuel had just started blinking at me. I think it was still going, but it was time to slow down.

164mph indicated @ 9600rpms. I need to make another run sometime with the GPS, but my bike is within 1-2mph at normal speeds according to GPS. The sport shield makes a big difference compared to the V-Stream. This was also my first run since installing the Muzzy system and PCIII. I had seen 160 before but never held on quite as long either I don't think.

 
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164mph indicated @ 9600rpms. I need to make another run sometime with the GPS, but my bike is within 1-2mph at normal speeds according to GPS. The sport shield makes a big difference compared to the V-Stream. This was also my first run since installing the Muzzy system and PCIII. I had seen 160 before but never held on quite as long either I don't think.
Your speedo is NOT accurate at the upper limits. Mine is only 1-2 off at highway speeds too, but at the upper limits it's off quite a bit.

160 gps speed I saw once was showing around 170 on the speed-o. Around 10,500 on the tach.

 
You sissies only use your speed-O like the swim wear.

I use my Mach meter, and at mach .8 I had to let off. The fairing completely ripped off the frame and my GPS started floating and then jumped out of it's mount and slammed into my shoulder, nearly took me off the bike. The windscreen let loose at mach .5. Also I expereinced weightlessness on the road with the rollers, I hate when that happens. Even fairlaner was white as a ghost when I passed him at 50 feet, mach .3.

Anyaway, If'n I was'n uses, I'd stop trying to get top speed and go for better cornering and brakingsnes. Now don't let the LEO's catch ya doin's silly thangs. ;)

 
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Your speedo is NOT accurate at the upper limits. Mine is only 1-2 off at highway speeds too, but at the upper limits it's off quite a bit.
160 gps speed I saw once was showing around 170 on the speed-o. Around 10,500 on the tach.
Good info Skooter. In my first few gears, the computer shuts down the engine when I get about 500 past redline, yet in 5th it seems to allow it to keep pulling. Especially since you've seen over 10k. 170... hmmm haven't found a road that long straight yet to reduce the pucker factor.

 
On the way to NAFO from Northern Cal. in '08, I stopped in at Bonneville, removed all the bags and made 3 runs across the salt. There was almost no wind that day, so direction had no effect. Speedo indicated just a hair under 155, though I don't have any idea the real speed. I do know that without any ditches, fence posts, or white lines to help keep your orientation, that speed feels real eerie. Outside of the sound of the engine and air, there was little indication of speed, except when I passed the occasional marker cones set out there in the July sun. The bike was rock-solid at that speed, which kinda surprised me. Each run was about 3 1/2 to 4 miles. There were no other vehicles on the lake bed. Took a while to wash off the salt when I got to Salt Lake City!

 
Lies. It's all damned lies!!

The bike only puts out about 75 horsepower, all the "official" claims are doubled for marketing.

There's no way that wheezer of a motor can push a an oversize windshield, bags, and fat-*** riders through the air at anything better than 85 or 90 miles per hour. All youse people claiming 165 this and 170 that must have metric or poorly calibrated gauges!!!

Liars! whole damned forum full of liars!

Never been over 90 on mine . . . . . . . :rolleyes:

 
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Fully loaded saddlebags plus an absolutely humongous gear bag full of the rest of my worldly possesions + camping gear strapped behind me and overhanging the back of the luggage rack by a foot.

Two lane deserted road with no side road access and a decidedly uphill slant I saw 144 when I heard straps slapping like whips cracking.

For a microsecond I thought about taking a look until I pictured my helmet becoming a parachute if it got into the airstream.

Shut down as another rider from this forum (nameless unless he outs himself) zipped by me as if I had locked up the brakes. Bike still felt like it had plenty left to go.

I think the bag actually helped the aerodynamics , bike was rock solid. Never took that much gear with me again and never tried to top that speed either.

 
220 ish KPH indicated speed recently two up with 3 bags full sir , and steady as a rock whilst pissing off about 50 Harldy Ablesons that where in my way whilst out on a cruise, Not intersted in goin fast in a straight line usually but I got held up half way past the HD procession and I needed to get in front for safety's sake :p

 
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