[ARCHIVED THREAD] - 81 MPH on a bicycle (Page 1 of 2)
Posted: 7/12/2016 6:34:35 PM EDT
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nice http://cycling-today.com/marcus-burghardt-descended-at-130-7kph-on-stage-9-of-the-tour-de-france/ |
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No thanks i came down a hill by the house Im renting a while back. My iphone recorded my speed at 40 mph, it was a scary ride for somone who has only been riding for 2 years now. I could not even imagine or want to ever go 80 on a bicycle. Same. 40 mph on my bike was about 15 mph too fast! |
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There is an ad for dog take like IDs with phone numbers for family members at the top of the page  |
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Just curious why a freewheel instead of a freehub ? Not that I imagined you did a lot of pedaling at 75 mph Quoted:
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I've seen 75 on a 12% grade on my track bike with a freewheel and brakes installed. With speed comes stability. Just curious why a freewheel instead of a freehub ? Not that I imagined you did a lot of pedaling at 75 mph Shimano bmx freewheel threads right on in place of track cog and lock ring. 53x 14 spin it up to 45 or so, get aero, and go for a ride.  
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SPEED WOBBLE |
You can buy a Stealth Bomber electric bike that will push you to speeds of 50mph.
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Quoted: You can buy a Stealth Bomber electric bike that will push you to speeds of 50mph.  https://www.youtube.com/watch?v=zEdETIjfngo |
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That is fukn cool! I will not search for that bike and a price............. Quoted:
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You can buy a Stealth Bomber electric bike that will push you to speeds of 50mph. https://www.youtube.com/watch?v=zEdETIjfngo More than a dirt bike. |
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Quoted: I very much doubt he hit 81 mph. It was more likely a GPS sensor glitch. Wind resistance really kicks in above 50 mph and above 60 mph it's a wall. Given a long enough descent, a good line, enough rider weight and a top tube tuck, I can see it. I've hit 60 still pedaling with 56x11, and 50 something easily in the drops with just my knees pushed against the top tube. I'm sure it's no glitch when three other riders were also clocked close to his speed, plus they have corroborating GPS between strava from his personal computer and the ASO sensors behind the saddle. |
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I very much doubt he hit 81 mph. It was more likely a GPS sensor glitch. Wind resistance really kicks in above 50 mph and above 60 mph it's a wall. I'm glad someone else said it......first but my first reaction was...... 
My cycling forte was sprinting....cause I can't climb worth a crap. That means in order to be there for the finish I had to learn how to descend like a maniac. I lived in the West.....we've got a few hills out there. Never saw anything approaching that number when we finally did start to install computers on the bike. Mid 60's tops. |
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Quoted: I'm glad someone else said it......first but my first reaction was...... My cycling forte was sprinting....cause I can't climb worth a crap. That means in order to be there for the finish I had to learn how to descend like a maniac. I lived in the West.....we've got a few hills out there. Never saw anything approaching that number when we finally did start to install computers on the bike. Mid 60's tops. Quoted: Quoted: I very much doubt he hit 81 mph. It was more likely a GPS sensor glitch. Wind resistance really kicks in above 50 mph and above 60 mph it's a wall. I'm glad someone else said it......first but my first reaction was...... My cycling forte was sprinting....cause I can't climb worth a crap. That means in order to be there for the finish I had to learn how to descend like a maniac. I lived in the West.....we've got a few hills out there. Never saw anything approaching that number when we finally did start to install computers on the bike. Mid 60's tops. You ever free wheeled down a 7% grade. My Ultra Classic will coast down I-64 at 70 MPH |
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SPEED WOBBLE Quoted:
SPEED WOBBLE Remember...YOU are the Speed Wobble. 
Not the board of the trucks or the wheels. |
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Did 52mph down hill as a 13-15 year old kid on the streets(well one street in particular)of Ventura.
15-20 or more minutes to pedal up and about 2 minutes to come down. I put a 52 tooth chain ring on that mountain bike which barely allowed me to hit the smallest ring gear on the crank. No helmet or protective gear and largely fearless. Back then I tended to bounce after hitting stuff. Now I am more than twice the weight and wouldnt dare do it. Can remember it being a rush though. |
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cool. In about '87 Haro or Hutch made a 90mph bicycle. I saw it in I think BMX Action. The thing was more plastic/windbreaker than bike, but yup, peddled downhill.  You're right. I remember those. They called 'em Gravity Powered Vehicles. A lot of the SoCal BMXers would take 20" BMX bikes, flip over the frame and take off the cranks and put the handlebars all the way down & reversed over the front wheel. IIRC, Tommy Brackens was big into it. The production ones had wheelcovers, fairings and cranks. Never did see anyone with one or one in a shop. Doubt many were made. Posted Via AR15.Com Mobile |
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You're right. I remember those. They called 'em Gravity Powered Vehicles. A lot of the SoCal BMXers would take 20" BMX bikes, flip over the frame and take off the cranks and put the handlebars all the way down & reversed over the front wheel. IIRC, Tommy Brackens was big into it. The production ones had wheelcovers, fairings and cranks. Never did see anyone with one or one in a shop. Doubt many were made. Posted Via AR15.Com Mobile Quoted:
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cool. In about '87 Haro or Hutch made a 90mph bicycle. I saw it in I think BMX Action. The thing was more plastic/windbreaker than bike, but yup, peddled downhill. You're right. I remember those. They called 'em Gravity Powered Vehicles. A lot of the SoCal BMXers would take 20" BMX bikes, flip over the frame and take off the cranks and put the handlebars all the way down & reversed over the front wheel. IIRC, Tommy Brackens was big into it. The production ones had wheelcovers, fairings and cranks. Never did see anyone with one or one in a shop. Doubt many were made. Posted Via AR15.Com Mobile I still want to build one out of a 24". |
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When I was a kid in the late 80's, my mom foolishly let me get a speedometer for my bike. There was a road near our house that went down hill fairly gradually for almost a mile. But overall, you lost quite a bit of elevation. It was deceptively steep. So I would get a running start and pedal as fast as I could to build up speed before I hit the down hill part. I could pedal for about a minute before the pedals were going too fast, then I just held on and tried to see how fast I could go. One day, I'm flying down the hill, and I see my mom's car in front of me, almost to the bottom of the hill, going the same direction. I was too scared to slam on the brakes, so I just kept going. I passed her doing 42 mph. She was doing the speed limit, which was 35. Needless to say, I didn't ride my bike again for awhile. |