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  1. #1
    Senior Cyclist forresterace's Avatar
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    What's your highest speed ever achieved on a descent?

    I set my "personal best" on the last day of a seven-day credit card tour (loaded with rear panniers and HB bag) last week. When I dared to take my eyes off the road for a millisecond, I saw 77.2 kilometers per hour (48 mph) on the computer. It was at this point that, with some breeze out there, I started to feel an oscillation in the front end (I think we used to call it a speed wobble in my motorcycling days). I began to gently back the speed down with the rear brake and things calmed down nicely (kept it in the high 50's kph). There wasn't a single car on the road for the entire descent!

    Oh yeah, the descent was 3.8 km (2.36 mi) long (straight as an arrow) and 171 m high (561 ft). For those interested it was heading east on County Road 40 towards Georgian Bay (Collingwood/Blue Mountain, Ontario area

    Doug

    It sure was a "rush" and, yes, a little scary too - it reminded me of my kart racing days.
    Last edited by forresterace; 08-26-12 at 07:25 AM. Reason: added comment
    2008 Specialized Sirrus Comp (dropbar touring bike), 1988 Fiori Italia, 1990 Norco Bushpilot shopping bike, 1971 Claud Butler Tipo Stada (under resto)

  2. #2
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    82km/h

    Prior to that my best was 77km/h, but my first taste of over 70km/h was on an MTB converted to a touring bike, down a gravel road. That 72km/h was fun, exhilirating and scary all at the same time.
    Dream. Dare. Do.

  3. #3
    Senior Member bruce19's Avatar
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    55 mph

  4. #4
    Email for new group DnvrFox's Avatar
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    I'm a piker at 40 mph. After that, I get VERY uncomfortable.
    Gone - email me at dnvrfox@aol.com for new group of old 50+ folks

  5. #5
    A might bewildered... Dudelsack's Avatar
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    My Garmin said 43 mph. I'm not sure I believe it. At 40 mph life comes at you very quickly.

  6. #6
    Small Member maddmaxx's Avatar
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    Quote Originally Posted by DnvrFox View Post
    I'm a piker at 40 mph. After that, I get VERY uncomfortable.
    I'm with you. I'm good to about 40/45 and then its drag brake time to calm things down. I alternate front/rear to try to keep the heat down on long descents. Strangely, I seem more comfortable at speed downhill on the MTB frame than the road framed bikes.

  7. #7
    Email for new group DnvrFox's Avatar
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    Quote Originally Posted by maddmaxx View Post
    I'm with you. I'm good to about 40/45 and then its drag brake time to calm things down. I alternate front/rear to try to keep the heat down on long descents. Strangely, I seem more comfortable at speed downhill on the MTB frame than the road framed bikes.
    Yes!! +1
    Gone - email me at dnvrfox@aol.com for new group of old 50+ folks

  8. #8
    Senior Member oldnslow2's Avatar
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    47mph on my first ride out with a new bike.

    I was upstate New York with my son and I ran out of gears at 37mph and just followed him.

    Needless to day I needed to "change my shorts" after the ride.

  9. #9
    Senior Member dendawg's Avatar
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    42 mph on a descent. When I noticed the speed I started feathering the brakes.

  10. #10
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    43.2MPH on my Trek 330.Did 40+ maybe 5 times.

  11. #11
    Senior Member Clarabelle's Avatar
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    As a tandem rider, I start hitting the brakes around 35mph due to my inability to stay focused on the road with all that screaming behind me.

  12. #12
    Senior Member oldnslow2's Avatar
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    Quote Originally Posted by Clarabelle View Post
    As a tandem rider, I start hitting the brakes around 35mph due to my inability to stay focused on the road with all that screaming behind me.
    too funny.

    Next big down hill, let her be in the front and you pedal as hard as you can.. Then you'll hear some screaming.

  13. #13
    Senior Member OldsCOOL's Avatar
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    Quote Originally Posted by oldnslow2 View Post
    47mph on my first ride out with a new bike.

    I was upstate New York with my son and I ran out of gears at 37mph and just followed him.

    Needless to day I needed to "change my shorts" after the ride.
    37mph is my top speed this year.....because of running out of gearing and our hills here though steep are only about 1 mile long. I run a typical road double of 53/39 rings with a freewheel of 28/14.
    Having a flat tire as part of the total cycling experience is highly overrated. Knowing how to fix one quickly is not.

    '85 Trek 460 road racer

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  14. #14
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    53.7 mph

  15. #15
    Senior Member TomD77's Avatar
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    Amazing how 40-45 on a bicycle is scarier than 140+ on a motorcycle.

  16. #16
    Quirky Grifter LesterOfPuppets's Avatar
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    I got just over 51 a couple of times in my youth and hoped I'd break 55 sometime but never did.

    I haven't broken 43mph in the past 10 years, though. That's plenty fast for my taste.
    1980ish Free Spirit Sunbird fixed * 1996 Mongoose IBOC Zero-G * 1997 KHS Comp * 1990-ish Scapin * Lemond Buenos Aires Triple

  17. #17
    Have bike, will travel Barrettscv's Avatar
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    53mph without really trying. I was on my upright Cyclocross bike with my hands on the hoods and the road dropped about -15% for about a KM. I was focused on staying smooth and balanced over the bike and did not re-position my hands or drop my head or shoulders to improve my speed. I now start the descents with my hands on the drops and my body in a balanced but aero position.

    I hit 47.5 mph two weeks ago while descending a hill while in a peloton. I had to "chat" with another rider and use my brakes to keep him from edging me off the road.

    http://connect.garmin.com/activity/209913897
    Last edited by Barrettscv; 08-26-12 at 02:24 PM.
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  18. #18
    Senior Member NOS88's Avatar
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    I assume my fastest downhill was over 55 mph. I was stopped by a state trooper who had a really big grin on his face and said, "I clocked you breaking the speed limit." The limit at that time and place was 55. He stopped me, not to ticket me or lecture me, but simply to report that I was really "flying down the hill". In terms of my own bike computer, I've hit the 53 mph mark on it. But I don't know how accurate that is.
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  19. #19
    coprolite fietsbob's Avatar
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    This again? Another pi**ing contest.

  20. #20
    Senior Member GeorgeBMac's Avatar
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    45MPH -- when I was about 15 years old... I started down the longest, steepest hill around on my 3 speed English racer and decided to see what happened without using brakes... Unknown to me, a motorist followed me down and, at the bottom stopped and told me (sounding a little amazed) how fast I had been going...

    That old English racer was not all that stable -- even a crazy 15 year old knew that I was basically just a misssle without the ability to turn or stop and one rock or pot hole would get me a pine box. But, it seemed like a good idea when I started down but, about half way even my 15 year old brain knew it was a stupid stunt that could get me killed.

    Now, even on far better bikes and with a helmet, even half that speed is too much speed for me...
    --------------------------------------
    bikes: 1992 Cannondale R500, 2012 Trek DS 8.5, 2008 LeMond Poprad

  21. #21
    Senior Member CommuteCommando's Avatar
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    42.5 mph here. http://ridewithgps.com/routes/1637246. Highest speed on a motor bike was about 120. Similar pucker factor.
    As much as you paid for that Beemer [Mercedies, Audi, Escalade], I'm surprised it didn't come equipped with turn signals.

  22. #22
    Let's do a Century jppe's Avatar
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    55 mph on the descent off Cottonwood past last summer.....and I held back a little not knowing the road.
    Ride your Ride!!

  23. #23
    Small Member maddmaxx's Avatar
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    Quote Originally Posted by DnvrFox View Post
    Yes!! +1
    I'm giong to assume that the geometry, mass of the bike and gyro action of the larger tires has something to do with that feeling. I seem to remember reading something about a famous downhill extreme race a couple of years ago in which the winner came from an MTB background and used an MTB frame, but I can't pinpoint the event in my 50+ memory.

  24. #24
    Has opinion, will express
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    Quote Originally Posted by fietsbob View Post
    This again? Another pi**ing contest.
    Oh, I don't know... I haven't participated in one of these for a few years now.

    That reminds me...
    Dream. Dare. Do.

  25. #25
    Senior Member Homeyba's Avatar
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    Quote Originally Posted by TomD77 View Post
    Amazing how 40-45 on a bicycle is scarier than 140+ on a motorcycle.
    Probably because on a motorcycle if you are going 140mph you're wearing full leathers, body armor an other assorted protective gear. On your bicycle you're practically naked except a marginal helmet.


    My top speed is 116.77kms/hr on US 163 into Mexican Hat Utah. Fun little descent there.
    It doesn't get harder, you just go slower.

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