Total Motorcycle Community Forums

Ever thought of joining the diplomatic service, or the Peace Corps Eddy?

dean owens wrote:it'd be nice to know what kinda bike. personally, i can see how it does not look like it's mph. but he's in 5th gear and his tachometer is reaching the redline at 175. i have an 83 silverwing (650 v-twin) and i can go 80 pretty easy in 5th gear at about 6-7000 rpms. if he's on a liter bike, i can see it being mph.

It's a big GSX-R 1000 K1

I'm going with SV as far as saying the guy is British, however I think he is on a grey import. An MPH speedo isnt a requirement for an MoT, as long as the Speedo works.

ofblong wrote:Yeah cause thats still slow compared to teh videos of guys doing 240mph on their Hayabusas.

The TT generally kills a couple of professional riders each year, and roughly three times as many civilians on Mad Sunday

Sooner or later it is going to be banned. However until then you've got to have balls to ride the TT.

Do I want to do Mad Sunday? Hell yeah.

This lad caused some spectacular footage when he brushed a wall at 160...

I can't find the footage of a rider being catapulted on to his feet into someones front garden after riding nose first into a crash barrier

cant watch that at work but sounds Ouchy.

jonnythan wrote:That is *not* MPH. There's no way.

The overtaken rider would have to be doing in excess of 85-90 mph, and no one is going to sit straight up like that cruising at 90 mph.

Also, when the speedo says about 170, it looks a lot more like 105 mph than 170 mph. I've seen other videos of 160+ mph and it appeared ty be significantly faster than this.

What are you talking about? He was gaining on that rider like crazy when he was *only* doing 100mph. I've sat up at 120mph on my VFR and had no problems holding on. Done a steady 100mph cruising without tucking in... it depends on your windscreen.

That is a gixxer 1000... I definitely think that is in MPH, and having gone over 150mph+ (in a car, closed track) and having done well over 120 while on a bike at the track, those speeds look about right to me.

Granted, I'm sure there is some speedo error, like on all bikes, but those look like correct indicated speeds.

The Speedometer can be in MPH, but is the speedometer correct? Most speedos on bikes are 10% high, plus changes in sprockets can make the speedo read quite a bit higher than actual speed.

mydlyfkryzis wrote:The Speedometer can be in MPH, but is the speedometer correct? Most speedos on bikes are 10% high, plus changes in sprockets can make the speedo read quite a bit higher than actual speed.

where do you get this 10% high thing? Maybe if the bike has been modified but I mean even on my bike its only 1mph off of what the police radars are set at. When my wife is doing 30mph in the mini van I am doing about 31mph.

Speedo error margins are in Build regulations. Tyre wear and a number of other issues can affect them upto 10% plus/minus.

Police here are supposed to give 10% over the speed limit to account for the inaccuracy and it's why Police Traffic cars have to have their speedos calibrated at the start of a shift.

ofblong wrote:

mydlyfkryzis wrote:The Speedometer can be in MPH, but is the speedometer correct? Most speedos on bikes are 10% high, plus changes in sprockets can make the speedo read quite a bit higher than actual speed.

where do you get this 10% high thing? Maybe if the bike has been modified but I mean even on my bike its only 1mph off of what the police radars are set at. When my wife is doing 30mph in the mini van I am doing about 31mph.

A stock bike tend to show an indicated speed of about 10% less speed than actual speed. So if your bike is showing 31mph at 30mph you are off by 3ish percent. That's good, but not normal in my experience.

ofblong wrote:

mydlyfkryzis wrote:The Speedometer can be in MPH, but is the speedometer correct? Most speedos on bikes are 10% high, plus changes in sprockets can make the speedo read quite a bit higher than actual speed.

where do you get this 10% high thing? Maybe if the bike has been modified but I mean even on my bike its only 1mph off of what the police radars are set at. When my wife is doing 30mph in the mini van I am doing about 31mph.

You also ride a cruiser.

ofblong wrote:

mydlyfkryzis wrote:The Speedometer can be in MPH, but is the speedometer correct? Most speedos on bikes are 10% high, plus changes in sprockets can make the speedo read quite a bit higher than actual speed.

where do you get this 10% high thing? Maybe if the bike has been modified but I mean even on my bike its only 1mph off of what the police radars are set at. When my wife is doing 30mph in the mini van I am doing about 31mph.

I was told something similar at my MSF course. THat NJ state law requires it be accurate to like 10% to 15% or something like that.