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Clydesdales/Athenas (200+ lb / 91+ kg) Looking to lose that spare tire? Ideal weight 200+? Frustrated being a large cyclist in a sport geared for the ultra-light? Learn about the bikes and parts that can take the abuse of a heavier cyclist, how to keep your body going while losing the weight, and get support from others who've been successful.

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Old 03-29-07, 08:37 AM   #26
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Originally Posted by Air


Hehe - I wish! One of those weird spedometer things.

I think 37 or so, too much traffic for much faster than that.
dude, you can't use three other magnets on your spokes to balance the wheels!

I gotta tell you, put a piece of coal in my ass and make my bike go some of the speeds you folks are talking about and I'd finish the ride with some bling for Mrs. Hambone.
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Old 03-29-07, 10:44 AM   #27
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Originally Posted by Hambone
I gotta tell you, put a piece of coal in my ass and make my bike go some of the speeds you folks are talking about and I'd finish the ride with some bling for Mrs. Hambone.
Back in my tri racing days, I hit some scary speeds on some crummy roads.
Anyone from Cleveland can attest to the cruddy condition of Northpark Rd (I think that's what it's called) heading from Shaker Lakes into downtown. I hit 47mph coming down that one during the Nat'l CitiCorp tri.
I used to bomb down this hill on Rt. 91 from Twinsburg to Hudson (Cleveland 'burbs), and routinely get up over 45mph.
Now, I'm OK with topping out at ~35mph on my beater old MTB. I don't need to go any faster than that. Honestly, I don't want to go any faster than that.
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Old 03-29-07, 11:36 AM   #28
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Originally Posted by Hambone
I gotta tell you, put a piece of coal in my ass and make my bike go some of the speeds you folks are talking about and I'd finish the ride with some bling for Mrs. Hambone.
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Old 03-29-07, 11:40 AM   #29
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Originally Posted by Hambone
dude, you can't use three other magnets on your spokes to balance the wheels!

I gotta tell you, put a piece of coal in my ass and make my bike go some of the speeds you folks are talking about and I'd finish the ride with some bling for Mrs. Hambone.
How about a magnet/spoke! Lesee, 36 spokes, 53 mph?

36(53)=1908 MPH!

1908/760= Mach 2.51!
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Old 03-29-07, 12:57 PM   #30
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Originally Posted by Tom Stormcrowe
How about a magnet/spoke! Lesee, 36 spokes, 53 mph?

36(53)=1908 MPH!

1908/760= Mach 2.51!
how much fun would that be to do? Show some of the guys on the road forum screen shots of that...
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Old 03-29-07, 02:00 PM   #31
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Originally Posted by Tom Stormcrowe
How about a magnet/spoke! Lesee, 36 spokes, 53 mph?

36(53)=1908 MPH!

1908/760= Mach 2.51!
I'd worry about my headbadge flying off and killing someone, as the air friction would probably melt the solder at that speed.
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Old 03-29-07, 02:30 PM   #32
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recorded 49 point something on my old computer last year. i may have gone faster than that since, but there's no telling right now. scary. should have a new computer soon - and then IT'S ON! my next of kin will post and address for sending flowers. ;-) eeekk!!!
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Old 03-29-07, 07:42 PM   #33
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Or let the guy's and gals in Recumbent see this! I had a little fun with Crazylady's pic tonight!
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Old 03-29-07, 08:30 PM   #34
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How about fastest averages? Last night I made 10.2 miles in almost exactly (just under) 30 minutes for a unreal average of 20mph. I had one fellow MUP user comment "holy crap, where are you hiding the rocket engine?" ehehehe.

Just one of those days, tailwind the whole way, and lots of energy. LOVE those days.
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Old 03-29-07, 11:40 PM   #35
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cool

I did that on my recumbent.....10 miles in 30 minutes. No tailwind, over rolling terrain. I was at times doing 38 mph down hills and 6 mph going up. I cruised in the mid 20's on flat ground. It took me under 45 minutes to get back but I was tired and it was 85 degrees.

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Old 03-30-07, 08:16 AM   #36
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Not to be discouraging, but those of you with 70mph claims should probably check your computers. 70mph speeds are achieved by full-fairing speed bikes in competition, not guys on standard bikes or partial-fairing bents.

Again, I'm not calling BS, just questioning the claim's accuracy.
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Old 03-30-07, 09:08 AM   #37
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Originally Posted by oopfoo
Not to be discouraging, but those of you with 70mph claims should probably check your computers. 70mph speeds are achieved by full-fairing speed bikes in competition, not guys on standard bikes or partial-fairing bents.

Again, I'm not calling BS, just questioning the claim's accuracy.
As I said 72 with a follow car that could not stay with me through the sweeping turns. It is not hard to get to 70+ using the proper technique. Most riders, especially clydes do not have the body shape conducive to getting right on top of the top tube and getting as low as possible. A good technique would require both crank arms level, knees turned into the middle of the frame, torso resting on the top tube, hands on the handlebar at the stem, elbows tucked in, chin resting on the stem. Unfortunately if you are not very flexible or have some modicum of intelligence you will not want to be in this riding position long. You have almost no steering control and no braking control. As long as your hill road is fairly steep and very straight you would have little to worry about, any traffic or turns or rough roads or debris would make this a nightmare scenario.

If you don't think this technique works, go to a safe hill with very little traffic and a flat section at the bottom. Then ride like you normally do and after cresting the top coast down the other side. Take note of your maximum speed. The do it again cresting at the same speed, put your self in the described position as far as humanly possible with regard to your body size and coast down the other side. Take note of you faster maximum speed. The lower you can get the smaller your frontal area which is the greatest barrier to any speeds over 50mph.
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Old 03-30-07, 03:33 PM   #38
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I've hit a tick over 30mph on the flats for just a moment. My downhill speed is 52mph. There's a long (2 mile) hill near my house with a 15-20% grade I want to try out on my new road bike. I'm hoping to get close to 60mph with the higher gearing. (yes I'm climbed that hill a few times).
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Old 03-30-07, 05:59 PM   #39
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speed demon

Quote:
Originally Posted by smurf hunter
I've hit a tick over 30mph on the flats for just a moment. My downhill speed is 52mph. There's a long (2 mile) hill near my house with a 15-20% grade I want to try out on my new road bike. I'm hoping to get close to 60mph with the higher gearing. (yes I'm climbed that hill a few times).
Unless you have really high gearing you might find you spin out at about 40 mph or less. Coast down speeds are affected by aerodynamics and tire friction and not much else. The world record on level ground with a streamliner (fully enclosed recumbent bicycle) is in the order of 82 mph if my memory is correct. You may with increased areodynamics gain an additional 5 mph on your hill unless you build a streamliner and then you will probably run out of road. Don't forget to upgrade your brakes with large diameter discs!
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Old 03-30-07, 06:17 PM   #40
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speed freaks

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Originally Posted by WheresWaldo
As I said 72 with a follow car that could not stay with me through the sweeping turns. It is not hard to get to 70+ using the proper technique. Most riders, especially clydes do not have the body shape conducive to getting right on top of the top tube and getting as low as possible. A good technique would require both crank arms level, knees turned into the middle of the frame, torso resting on the top tube, hands on the handlebar at the stem, elbows tucked in, chin resting on the stem. Unfortunately if you are not very flexible or have some modicum of intelligence you will not want to be in this riding position long. You have almost no steering control and no braking control. As long as your hill road is fairly steep and very straight you would have little to worry about, any traffic or turns or rough roads or debris would make this a nightmare scenario.

If you don't think this technique works, go to a safe hill with very little traffic and a flat section at the bottom. Then ride like you normally do and after cresting the top coast down the other side. Take note of your maximum speed. The do it again cresting at the same speed, put your self in the described position as far as humanly possible with regard to your body size and coast down the other side. Take note of you faster maximum speed. The lower you can get the smaller your frontal area which is the greatest barrier to any speeds over 50mph.
This will result in reduced frontal area by about 20-30% which is simular to a unfaired recumbent position highracer/lowracer with a corresponding increase in coast down speed of about 10 mph more than a more upright position will give. Unless you improve your shape to that of a fully faired bicycle of excellent aerodynamics you will not go as fast as you might think. There is just too much turbulance especially at the back end and around the legs and frame. Alot of people with big budgets have tried to make fully faired bicycles break 82 mph and even slight fairing abnormalities affect top speeds. Of course, coasting down hill requires no power output. I've done about 50 mph and don't think you could go much faster than a well designed automobile in a coastdown. Can you imagine blowing a tire at these speeds? I'd rather do this on a low slung trike or a lowracer where a fall might not result in death or a broken body! Those little skinny tires don't give much traction or suspension not to mention the braking performance.
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Old 03-30-07, 07:05 PM   #41
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Charles, last summer, when I was crewing RAAM, I saw Rob Lucas drop into monument Valley at 67 MPH down the hills. He was on a DF bike on aerobars. I as driving the chase van. High speed is very possible on a big downhill. I've topped over 50 myself.
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Old 03-31-07, 12:24 AM   #42
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yes but

Gravity rocks!!!! 32 fps squared! So yes.... I guess one can coast downhill quite fast but its not very safe on a upright, with skinny tires, weak brakes and leaning on aerobars! I gotta hand it to those brave souls! I was scared enough going 55mph (estimated) on my old Raleigh!
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Old 03-31-07, 01:06 AM   #43
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Coming down from Onyx Summit one time into Big Bear I hit 51.5. That was fast enough for me.
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Old 03-31-07, 07:30 PM   #44
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Two years ago, I finally broke 50 mph (50.5) on a mile long hill in Wisconsin. Aero drag is a real killer for Clyde speed records. Fastest on flats was a 34 mph sprint that almost slayed me. I've done some rides here in Chicago into the wind for over two hours just so I could experience the tailwind on the ride home. Best one yet was 22 miles at over 28 mph. The tail was so strong that the air around me felt still at that speed. What a rush!
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Old 03-31-07, 09:22 PM   #45
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My measured top speed is 42 mph and I am amazed at some of the speeds posted here! While in college I descended a hill on my 10 speed road mike and couldn't keep up with the peddles in top gear. Not sure what speed I hit (no speedo) but my bike started speed wobbling at this point and it scared the h out of me.

I hate to admit this but the older I get the more fear I have with high speeds. I start thinking about how bad it would be to have a blow out at 30+ mph. When I was young these thoughts never crossed my mind.
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Old 03-31-07, 09:25 PM   #46
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My measured top speed is 42 mph and I am amazed at some of the speeds posted here! While in college I descended a hill on my 10 speed road mike and couldn't keep up with the peddles in top gear. Not sure what speed I hit (no speedo) but my bike started speed wobbling at this point and it scared the h out of me.

I hate to admit this but the older I get the more fear I have with high speeds. I start thinking about how bad it would be to have a blow out at 30+ mph. When I was young these thoughts never crossed my mind.
Once you get past the harmonic wobble frequencym the death wobble goes away and you smooth out again. It's usually around a 5 mph band +/-. My bike starts the wobble around 48 or so and settles again around 53.

As to hitting the road? I don't even want to think about it and when I'm dropping a hill that fast, I'm riding the adrenaline rush and don't care!
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Old 03-31-07, 09:32 PM   #47
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I hit 45mph on a downhill on my first road bike - a GMC Denali... while another clyde was drafting me... on another GMC Denali.

I haven't attempted that same downhill on my Fuji... yet.
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Old 04-03-07, 02:22 PM   #48
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54mph on a downhill in a triathlon in 1992, cept' that was when I weighed 175lbs. cranking a tri-spoke up front, HED wheel in back and me half outta my gourd from a race fueled adren-rush. Though completely terrifying and the bike was making sounds like it was going to begin coming apart under me, it was incredible. Never really broke the high thirties since becoming a Clyde.

I loved all your stories guys, thanks for sharring!!!
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Old 04-03-07, 02:37 PM   #49
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Quote:
Originally Posted by oopfoo
Not to be discouraging, but those of you with 70mph claims should probably check your computers. 70mph speeds are achieved by full-fairing speed bikes in competition, not guys on standard bikes or partial-fairing bents.

Again, I'm not calling BS, just questioning the claim's accuracy.
Yep, I'm not calling BS on anyone either but probably a matter of not actually calibrating your computer the measurement way vs. wheel size selection (we clydes really can't go by the wheel size choice)...the best way to tell is if your journal is full of you having like a 18mph avg./speed on a four hour ride, sort of exaggerated but you get the idea. I don't mean to rain on any parades but oopfoo is completely right in that a regular rider on a bike not designed to reach/manage those speeds, well, it's just very unlikely BUT if you are really sailing down a hillside and your calibrated cateye reads anything over 60mph...then for the love of all things holy, SLOW DOWN!!!!
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