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Old 12-12-04, 08:38 PM   #1
gear head
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its the year 2004, and we're still using............

spoked wheels.

yes, you hered me, laugh, laugh all you want (big flame-a-thon) I dont care!!!!!!!..........

Im just wondering why we're still using old fashioned spoked wheels? What ever happened to those futuristic wheels from the early 90's? you know, those wheels with the 3 or 4 big spokes?

I know the current system works, but come on.........

would it be posible to build a bicycle wheel from solid alu.?
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Old 12-12-04, 08:49 PM   #2
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Disc front wheels are aerodynamically unstable because they have a large sail area to side winds and the centre of pressure is a long way in front of the steering axis. Variations on the traditional wheel construction give good strength, weight, and aerodynamic drag, but riders priorities determines which variation to choose as these properties are often opposed to each other. Cost is another consideration.
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Old 12-12-04, 09:05 PM   #3
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And where's my flying car?

You'll need better arguments than "it's 2004". For example, AndrewP made some good arguments.
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Old 12-12-04, 09:11 PM   #4
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What really bothers me is that we are still playing games with screens and controllers.
What ever happend to thoes headsets and gloves, you know the ones like in Lawnmower man.
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Old 12-12-04, 09:11 PM   #5
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Quote:
Originally Posted by gear head
I know the current system works, but come on.........
Why is my bike still chain driven?
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Old 12-12-04, 09:16 PM   #6
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examples of what im talking about, I really want to know,
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Old 12-12-04, 09:20 PM   #7
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the spoked wheel performs very well, heck its been around (not necessarily the spoked bicycle wheel but a wheel with spokes) for a while, and had a long time to develop so it cant be that bad! Its perfect for that it does, how the spokes deal with the loads placed on it and whatnot. Im not gonna bother with one of those 3 spoke wheels or whatnot, it would suck if you broke one spoke or whatnot
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Old 12-12-04, 09:48 PM   #8
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For many good technical reasons they are the best design for the job. A solid aluminum wheel would be way too heavy and a good side wind would cause a crash.
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Old 12-12-04, 10:17 PM   #9
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and whatnot
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Old 12-13-04, 01:54 AM   #10
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Don't be surprised to see radial spoked wheels go down the same way in a few years. They just don't make sense from weight, strength point of view. Bicycle industry introduces something new every year just so they can move the inventory.
My bicycle, bought 1984, originary had both shifters placed on top of the down tube instead of each side of the tube. When the shifters coming loose and I had to replaced it, I could not find anybody makes one. Luckily I found an adapter, so I could use the regular shifters. Since then, I have learned not to jump on anything new quickly.
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Old 12-13-04, 02:00 AM   #11
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Quote:
Originally Posted by XzEn54321
What really bothers me is that we are still playing games with screens and controllers.
What ever happend to thoes headsets and gloves, you know the ones like in Lawnmower man.
Because they suck.

It's 2004. Why are we still using archaic caveman tools such as the wheel, lever, screwdriver and pen? I want my sonic screwdriver and tri-corder, dammit!!!!
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Old 12-13-04, 04:56 AM   #12
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Also, let's not forget that spoked wheels have a degree of adjustability. Given the non-static conditions in which most wheels are used (read: not on a brand new indoor track), variations in rim deflection tolerances will cause hops and whatnot.

Other wheel designs (carbon, whatnot) haven't caught on because they don't let you fix it when it's broken. Who has the money to buy a new wheel every time one goes over a rough patch?

Lance "One Nut" Armstrong, that's who.
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Old 12-13-04, 05:31 AM   #13
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Ask Laurent Fignon about using disc wheels on the front and back. He used a disc front wheel in stage 21 of the '89 TdF and was all over the road. Greg Lemond didn't (he did use aerobars) and made up 66 seconds on Fignon. He was 58 seconds behind at the start. Guess who won the Tour de France?
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Old 12-13-04, 06:15 AM   #14
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Quote:
Originally Posted by phantomcow2
the spoked wheel performs very well, heck its been around (not necessarily the spoked bicycle wheel but a wheel with spokes) for a while, and had a long time to develop so it cant be that bad! Its perfect for that it does, how the spokes deal with the loads placed on it and whatnot. Im not gonna bother with one of those 3 spoke wheels or whatnot, it would suck if you broke one spoke or whatnot
what about disc brakes? do you have any idea how much force is being applied when those brakes are squeesed. that puts alot of pressure on the spokes.

why not have bigger and fewer spokes, like lets say 6 or 8
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Old 12-13-04, 06:17 AM   #15
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Originally Posted by DieselDan
Ask Laurent Fignon about using disc wheels on the front and back. He used a disc front wheel in stage 21 of the '89 TdF and was all over the road. Greg Lemond didn't (he did use aerobars) and made up 66 seconds on Fignon. He was 58 seconds behind at the start. Guess who won the Tour de France?
if i remember correctly, those disc wheels were actually spoked wheels w/ a plastic cover. I think those were the BMX wheels?>>!!!!!!!!!
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Old 12-13-04, 07:30 AM   #16
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You're correct about the front disc wheels being just a regular spoked wheel with a mylar cover. Rear disc wheels are usually true discs made from carbon fiber. I believe the reason we still use spoked wheels are durability, adjustability, repairability, and - not least - cost. A single disc or tri-spoke carbon wheel often costs as much as a set (front and rear) of high quality, very light, spoked wheels. I'm all for using aerodynamic advantage during a time trial or on the velodrome if you're on a team and/or can afford it. But for regular training/touring/racing you just can't beat a good set of spoked wheels.
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Old 12-13-04, 07:36 AM   #17
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what about disc brakes? do you have any idea how much force is being applied when those brakes are squeesed. that puts alot of pressure on the spokes.

why not have bigger and fewer spokes, like lets say 6 or 8
Yes disc brakes exert much stress on the wheel, and 3 cross lacing deals with it quite well. If you have 6 big spokes (whcih i dont see why you would) one could break and if it did your wheel would be horribly out of true. A well built wheel shouldn't break spokes anyways. But I bet you with my 32h wheel if one spoke was broken or not equal tension my wheel would be horribly out of true.
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Old 12-13-04, 07:55 AM   #18
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Does anyone have photos of these futuristic carbon 3-spoke wheels? I never heard of it and now I'm curious.
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Old 12-13-04, 08:39 AM   #19
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SPecialized makes them, spinergy as well. google it
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Old 12-13-04, 09:19 AM   #20
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I have been riding HED3, 3 spoke carbon fibre wheels (650C) on my GT Vengeanace for about 6 years now. Prior to that I had a similar Trispoke wheel. While they are extremely aerodynamic they do have several disadvantages and the biggest is not weight or susceptibility to cross winds, but stiffness. The wheels are incredibly rigid. They transmit so road much shock that it seems like the proverbial 'Princess the Pea' fairy tale. Couple them with a modern, large diameter, stiff frame and you have a teeth jarring ride. I can tolerate my set-up for about 40K. Beyond that distance, due to the fatigue, I'm actually faster on 16/20 spoke wheels with deep rims. If the roads are really rough, I don't use the HED3 at all. Traditional spoked wheels provide an amazing amount of shock absorption that you really don't appreciate until you have ridden a HED3 or Tripoke. In my opinion, the HED3 and similar wheels are only practical for time trials, triathlon/duathlon and track racing.

If someone can tell me how to attach a picture, without having to hyperlink to a personal web page, I'll post a picture of my Vengeance/HED3 set-up.
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Old 12-13-04, 10:10 AM   #21
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If someone can tell me how to attach a picture, without having to hyperlink to a personal web page, I'll post a picture of my Vengeance/HED3 set-up.
At the bottom of the reply screen there is a button "Manage Attachments" under attach files. This lets you select a file from your hard drive. The file has to be under 100k size so you may have to reduce the size first with an editing program. Note that file size reduction is the square of the dimensional reduction, so if you reduce to 70% of original size the file size is about half of the original.
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Old 12-13-04, 01:09 PM   #22
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Note that file size reduction is the square of the dimensional reduction, so if you reduce to 70% of original size the file size is about half of the original.
thats good one to know! how do you calculate the dimensional reduction?

question 1 (20 pts):
suppose you have an 800x600 300kb jpeg and need it to be 125kb, what will the new dimensions be? (please show all work)
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Old 12-13-04, 03:27 PM   #23
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Why use wheels at all?

Beam me up Scotty.................



Can you imagine looking like that much of a DORK for eight hours a day? And I'm an IT consultant .
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Old 12-13-04, 05:18 PM   #24
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If you use a strong magnetic field you just eliminate the spokes completely. Maybe even the frame too!! The turboencabulator would do it.
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Old 12-13-04, 06:06 PM   #25
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Quote:
Originally Posted by AndrewP
At the bottom of the reply screen there is a button "Manage Attachments" under attach files. This lets you select a file from your hard drive. The file has to be under 100k size so you may have to reduce the size first with an editing program. Note that file size reduction is the square of the dimensional reduction, so if you reduce to 70% of original size the file size is about half of the original.
Ahhhh, much obliged Andew! Thxs for helping to turn on the light!

The attached pic of my Vengeance/HED3 set up is a few years old. The hand controls have all been changed. The handleabrs are now Syntace cowhorn style with Profile Split Secend Ti aero bars. Brake levers are Syntace. Shifters are Dura Ace bar ends mounted on the ends of the aero bar. Unfortunately, my current digital camera is in my Palm and it takes lousy pictures, so this will have to do. Maybe Santa will bring me a decent digital camera for Xmas.
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