Can your bike actually do the Ton?

t71ford said:
I was skeptical about the bicycle speedo too. All the ones I researched would go to 200 MPH, though. None would read less that I could find. There must be some amazing bicyclists out there :eek: Maybe I will cafe my old Huffy...
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If you can find a couple of links to some of the speedos you were looking at this would make an awesome addition to the $50 mod thread.
 
I've used sigma sports bicycle speedos before. They're the magic one with high speed reading that works.
 
I've only rolled my DS7 up to an indicated 70mph. The factory specs only claim about an 85mph top speed anyway. So I doubt it'll Ton without significant gear swaps. I didn't build it to be a High Roller though. I built it to be an "around town" runner. (also, considering the factory rated top speed, I'd end up road pizza if I tried to put her on the interstate)
I have another cycle I take out when I want to go fast... my Hayabusa.
On her I've bumped the rev limiter in 6th gear. And the speedo buries into 185mph at the top of 5th.
 
Some say: "It would be really scary to go that fast on a bike that old!" Have you guys found that your vintage bikes are unstable or "scary" at speed?
Mine feels really comfortable when pegged.
 
I've had the GL1000 79 up to about 120 mph and it was rock solid till I tried to push it a little faster, it developed a speed wobble and I backed off slowly till it stabalized back at about 85 mph, that was plenty fast enough and I wouldn't really need to ever do it again, I just wanted to see how fast it would go. I think the fact I had a small screen on it was messing with the aerodynamics a bit. 85-90 mph is as fast as i think it ever needs to go and that is for the 401 in TO and passing on the highways here. It will normally be cruising at 70 MPH or about 120-130 KPH. But it is a big bike. My 81 twin is stable tight up to it's top of 120 mph unless it is crazy windy, Actually the 30 year old bikes are pretty good for that age.

Cheers,
 
Bone stock '72 Bonneville w/passenger - 112MPH. Speedo reading from friend's 1994 cb1000, which was brand new at the time. We were side by side on US-23 in MI. Dead steady. My 95 Thunderbird gets really light in the front end around 95, so that's been the limit of that one so far.
 
My 1100 is fine overall to about 110. A lot of people compain about it being really unstable in corners, but I have found most of that to be due to rider input/ throttle changes in the corners. If you commit and hold through the corner, it is not nearly as bad. Much faster than that, and you are starting to get to the bike's upper limits, and it is not nearly as controllable.
80-90 MPH is an even trot for it, though. You can do anything on it at that speed.
 
triumphrider74 said:
Have you guys found that your vintage bikes are unstable or "scary" at speed?
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At 65mph my DS7 seems very stable. With the only issue being wind gusts will move me around. But that's more due to the weight (or lack there of) of the bike.
I can say that it's a whole lot more fun doing 65mph on the DS7 than it is doing twice that on the 'busa. On the DS7 you actually feel like you're doing something :D
 
For the old CB750 owners out there, my 1975 Super Sport makes the trip to the Ton and back on a regular basis. Just the stock motor and I had my son along on his Suziki SV650 to confirm. With the carbs dialed in I think she'd get pretty close to 100 mph in the 1/4 mile...we'll find out this spring!

Scott

 
Judging by the tach, I think I've been to 100 on the BMW 650. The pre-68 models, can get to feeling squirrely past 80-85. They can begine to wander around in the lane. I'm a scaredy cat.

I kind of lost interest in trying, but I'm guessing my Watchless (W650) could do it.
 
my cb550K has made it once. All my mates tell me it shouldnt be possible, so i'm guessing either a really good tail wind, or perhaps a slightly off speedo. as soon as i hit an indicated 160, i backed right off. surprising stable, yet really scary on a bike that old. the whole way up i had visions of my front wheel bearing grenading... doubt i'll do it again.
 
Who said a 550 can't do the ton? Of course it can. I've had one there myself a number of times.

it's spec'd top speed is about 106mph I think.
 
Not sure if I have hit the magical 'ton' or not, no speedo. But I would guess that between the speed tears, the apocalyptic sound of the engine and the grin on my face that could have split a coconut, I would guesss that I have been close. Also I far as I can remeber a stock 87 BMW R80 is supposed to hit about 112mph, and that has been a couple ajustments to my 'bobafe'.Does not really matter to me anyway though, as long as I feel like speed is happening and my blood moves quicker than dirt I am pleased with the ride. cheers, Mangonotforget.
 
"It would be really scary to go that fast on a bike that old!"
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I have had the '78 CB750 cafe up to that speed and it doesn't feel all that comfortable.
However, the comparison is made against my ST1100 which can do that speed all day and feels effortless.
Of course, these speeds are only done on "a closed course with a professional driver" ;)
 
'96 SuperIII - 152.4mph gps verified
'81 xs850 - 125mph indicated, probably closer to 110
2001 R1 - Too scary to look at the speedo, pegged in 5th, climbing in 6th..wussed out. Faster than everyone else was going
'75 cb500t - indicated 110
'65 S90ss - felt like 150mph

I only "closed course" my own bikes....
 
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