Author Topic: How Fast is Fast?  (Read 22108 times)

Offline Oma Aika

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Re: How Fast is Fast?
« Reply #25 on: July 18, 2013, 02:10:18 PM »
As a law abiding United States citizen, I never exceed the statutory speed limits.   :hehehe

Me too, here in Finland. But I'm quite sure the speed meter of my K75 is very optimistic and that's why I may sometimes ride with high numbers on the speed meter...  :hehehe

(Not K-series bike but I was testing a Honda Blackbird: 1st gear max was 160 km/h = 100 mph, then to the max of the second and third gear and I suddenly felt the curves had strangely changed to very tight ones and I never saw the 300+ km/h = 190+ mph digits the owner says it goes... So it must have even more optimistic speed meter because I would never exceed the speedlimits...  :D )

Actually I usually follow speed limits very well because if speeding, my back starts to hurt. It's somehow related my wife sitting on the backseat...  :hehehe
BMW K75 -89
Honda CX500

Old bikes&cars&happenings, pictorials: www.vanhamoto.net

Offline Lucas

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Re: How Fast is Fast?
« Reply #26 on: July 28, 2013, 04:14:37 PM »
Riding my new K75S home from SF on the 5, she started vibrating and the wind was acting like it does on my GL500 at about 75mph.

I glanced down to see I was doing 105mph...  :eek:

I'd never even hit the ton on the Honda, so I tucked in, got up to 112 and then backed off to regular freeway speeds for the rest of the trip.  :curvy-road

Offline motodude

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Re: How Fast is Fast?
« Reply #27 on: July 28, 2013, 07:38:52 PM »
Oh, back when there was no daylight speed limits in MT, I met the MT state police coming the other way when running an indicated 95 mph on US 212 heading toward Little Big Horn.  I didn't roll off and he didn't bat an eyelash. 

Ya gotta love that those K-bikes will run at those speeds for hours on end without any drama.

Tom
'95 K75RT
'90 K75RT
'87 K100RS Motorsport
No, I am not cool.  Yes, it really is the journey.

Offline mystic red

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Re: Re: How Fast is Fast?
« Reply #28 on: July 28, 2013, 10:08:26 PM »
Oh, back when there was no daylight speed limits in MT, I met the MT state police coming the other way when running an indicated 95 mph on US 212 heading toward Little Big Horn.  I didn't roll off and he didn't bat an eyelash. 

Ya gotta love that those K-bikes will run at those speeds for hours on end without any drama.

Tom

That's what they were built for!

Offline motodude

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Re: How Fast is Fast?
« Reply #29 on: July 28, 2013, 11:32:34 PM »
I remember wondering what the cops would think was, "reasonable and prudent".  That's why I kept it in double digits.  I figured triple digits they might consider to be a bit beyond that particular metric.

Tom
'95 K75RT
'90 K75RT
'87 K100RS Motorsport
No, I am not cool.  Yes, it really is the journey.

Offline bamaboy

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  • '94 K1100RS
Re: How Fast is Fast?
« Reply #30 on: August 14, 2013, 02:07:38 PM »
:riding: Is there life beyond 65???

I had a friend that used to ride a SECA 650 and he wore a t-shirt I loved, I've looked for one but to no avail. I played around and came up with something similar, I think I'll have some made, what do you think...
They call him Big Al,
women love him,
men want to be him...

Offline CRASH

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Re: How Fast is Fast?
« Reply #31 on: August 15, 2013, 10:47:16 AM »
:riding: Is there life beyond 65???

I had a friend that used to ride a SECA 650 and he wore a t-shirt I loved, I've looked for one but to no avail. I played around and came up with something similar, I think I'll have some made, what do you think...

When I raced I had a shirt that said Life Begins at 170 and a GP 500 bike on it - I don't know that it begins there, but it sure makes you assess things differently.  :hehehe
- CRASH -

Offline Mongrel

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Re: How Fast is Fast?
« Reply #32 on: August 15, 2013, 11:30:05 PM »
Around 150 kph, I think, which would be about 93 mph. That was testing the bike out when I first got it.

Been up to 140 kph while passing folks on the highway more than enough times since then, but that's about it. More than fast enough for my terrible eyeballs. Course the speedo on mine seems to be about 5 kph high (which is quite a bit!), but I'm taking that into account.
'86 K75c
'79 Motobecane Mobylette (mothballed)

Offline vintagemilano

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Re: How Fast is Fast?
« Reply #33 on: August 25, 2013, 01:12:08 PM »
Not too fast by your guys standards…. Last weekend I did a mountain road trip with a passenger on my 90 K75RT and was hitting 80mph in the twisties, had it cranked over far enough that I ground down the outside of my shoes a bit. That was a great fun ride. I'm not too inclined to do top speed runs in this part of the world because of the wildlife risk, I've only had the bike a couple months and already clobbered a deer that spooked out of a ditch in front of me. I got super lucky and managed to stay on the bike and keep it upright, took the deer in the shoulder/chest area and had a good splat mark on my coat from the deer fur after.
  • Cranbrook, BC, Canada
  • 1990 K75RT
Non bricks include
06 Yamaha FZ6
1996 Yamaha xt225
1993 Suzuki GSF400

Offline Grim

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Re: How Fast is Fast?
« Reply #34 on: August 25, 2013, 09:15:47 PM »
I think I clipped 100 today. Group I was riding with didn't all make a a turn. The Sweep (my cousin) and I got caught by traffic. Heard him tell the lead we would catch up so I did. Looked in my mirror and Cuz was playing catch up with me on his brand new Harley lol
I was really impressed how solid it felt and howchard it was pulling. I really didn't realize I had wound it out that much. Then scrubbing off the 40 or so surplus MPH so I could drop back in behind the group was a little scary.

If I can figure out my 12year old GPS it may have the actual speed in it. 
1995 Morea Green K1100LT

Offline Oma Aika

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Re: How Fast is Fast?
« Reply #35 on: August 27, 2013, 12:57:14 AM »
Yes, my K75 too is very solid and nice to ride 100-110 mph even with passenger.
BMW K75 -89
Honda CX500

Old bikes&cars&happenings, pictorials: www.vanhamoto.net

Offline TaosBrick

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How Fast is Fast?
« Reply #36 on: October 01, 2013, 11:39:44 PM »
Achieved a personal best of an indicated 130mph on my Chile Red K75 today. Guessing that to be something over an actual 115. Figger that must be all there is, as I held it wrung out all the way for over a minute.
  Solid as a rock, smooth as glass - Wheeeeee!!
Flog It Every Day - I mean, the BIKE!
'92 K75, '73 R75/5 Café,'89 Yam XT350
Expect Nothing, Be Ready For Anything.
- Samurai Maxim

Offline DRxBMW

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Re: How Fast is Fast?
« Reply #37 on: October 02, 2013, 07:13:08 AM »
116 mph on a K 75,downhill with a tailwind.

Unless your top speed is verified by GPS or a LEO it's probably inaccurate on a BMW speedometer. Well known to be 10% or higher.

Gary
Williamsport,Pa

1994 K 75 ABS "custom"
2005 F 650 GS

Offline Oma Aika

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Re: How Fast is Fast?
« Reply #38 on: October 02, 2013, 08:43:54 AM »
116 mph on a K 75,downhill with a tailwind.

Unless your top speed is verified by GPS or a LEO it's probably inaccurate on a BMW speedometer. Well known to be 10% or higher.

Is it really? Maybe it can be adjusted or depends on tires? My ex-police bike's speedometer shows exactly (+/- 1 km/h) the same numbers as my GPS.
BMW K75 -89
Honda CX500

Old bikes&cars&happenings, pictorials: www.vanhamoto.net

Offline TaosBrick

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How Fast is Fast?
« Reply #39 on: October 02, 2013, 09:30:42 AM »
Yeah, Th' Duck sez they categorically run 10% over. I believe he also posted how to fix it in The Lieberry. But this involves dickin' with teeny weeny electrical parts, soldering and other forms of Black Majic Hoo-Doo where I fear to tread.
Flog It Every Day - I mean, the BIKE!
'92 K75, '73 R75/5 Café,'89 Yam XT350
Expect Nothing, Be Ready For Anything.
- Samurai Maxim

Offline Oma Aika

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Re: How Fast is Fast?
« Reply #40 on: October 02, 2013, 01:15:48 PM »
Strange... either something has been done to my brick or there are different speedometers  - different for mph and km/h versions? For European/American versions? I've never tested any other bricks so I can't say much. Mine is very accurate though.
BMW K75 -89
Honda CX500

Old bikes&cars&happenings, pictorials: www.vanhamoto.net

Offline wmax351

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Re: How Fast is Fast?
« Reply #41 on: October 02, 2013, 04:28:39 PM »
Police bikes have a specially calibrated speedo. Needs to be done if they are giving tickets based on it.
  • Ann Arbor, MI
  • 1991 BMW K75 Standard, Refreshed '94 engine
Bikes:
Current:
1991 BMW K75 Standard, Refreshed '94 engine


Past:
'83 BMW R65LS (An R65 with a prototype K Bike Front End)
'75 Honda CB550F
'69 Honda CB175
1999 Royal Enfield Bullet 500 (Last month of the original '55 model)
1973 Triumph Tiger TR7V (5 speed, Right Shift, Disc Brake)
1971 BMW R75/5 in Toaster outfit
1979 Harley Davidson XLS-1000 Sportster Roadster

Offline Oma Aika

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Re: How Fast is Fast?
« Reply #42 on: October 03, 2013, 06:27:44 AM »
Police bikes have a specially calibrated speedo. Needs to be done if they are giving tickets based on it.

Well, You may be right. At least it would be a logical explanation. There are some other differences so why not this one, too.
BMW K75 -89
Honda CX500

Old bikes&cars&happenings, pictorials: www.vanhamoto.net

Offline rbm

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Re: How Fast is Fast?
« Reply #43 on: October 03, 2013, 07:29:11 AM »
Is it really? Maybe it can be adjusted or depends on tires? My ex-police bike's speedometer shows exactly (+/- 1 km/h) the same numbers as my GPS.
Most motorcycles for the domestic market have speedometers that indicate up to 10% higher than actual road speed.  That's why there's a market for electronic add-ons to correct the readings.

For the K-bike, there is an potentiometer inside the unit that can be adjusted.  Use a program like Karamba to provide the calibrated signal and adjust away.  Means taking off the instrument cluster from the bike to get this done -- but you do it only once.  No soldering or playing with the electronics required, except for a special audio cable to adapt the cluster to the PC.
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/

Offline BexarWolf

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Re: How Fast is Fast?
« Reply #44 on: October 04, 2013, 05:12:24 AM »
119mph GPS verified (and saved) on the toll road on my '94 K1100rs. :-)
Sit tall in the saddle, hold your head up high. Keep your eyes fixed where the trail meets the sky. Live like you ain't afraid to die. Don't be scared. Just enjoy the ride. ~ Chris LeDoux

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