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Search: Posts Made By: RobertHurst
Showing results 1 to 50 of 1000
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Forum: Advocacy & Safety
04-11-14, 09:33 AM
Replies: 18
Views: 1,326
Posted By RobertHurst

You don't ever drink alcohol or coffee then?

You don't ever drink alcohol or coffee then?
Forum: Advocacy & Safety
01-01-14, 11:21 PM
Replies: 32
Views: 1,737
Posted By RobertHurst

I don't know if it's just classic human laziness...

I don't know if it's just classic human laziness or something deeper. People like to shovel the responsibility for their personal safety onto others. In traffic, there are plenty of others.

You...
Forum: Advocacy & Safety
11-04-13, 11:00 AM
Replies: 119
Views: 38,037
Posted By RobertHurst

Some can, some can't. Many can't. My '70 Chevy...

Some can, some can't. Many can't. My '70 Chevy pickup certainly can't come close to that.

So -- can a bicyclist stop faster than a car? Yes, it is possible, but it depends on the car and depends...
Forum: Advocacy & Safety
11-04-13, 10:57 AM
Replies: 119
Views: 38,037
Posted By RobertHurst

This thread is a frightening reminder of the way...

This thread is a frightening reminder of the way humans cling to their beliefs even after they've been proven wrong.
Forum: Advocacy & Safety
11-04-13, 10:55 AM
Replies: 119
Views: 38,037
Posted By RobertHurst

Okay then. The "laws of physics" dictate...

Okay then.

The "laws of physics" dictate that you will endo your bicycle when attempting a .7-g stop.

Anybody who can stop shorter than 20 feet from 20 mph must be a witch.
Forum: Advocacy & Safety
11-03-13, 11:02 PM
Replies: 119
Views: 38,037
Posted By RobertHurst

Why don't you read the rest of the thread, friend.

Why don't you read the rest of the thread, friend.
Forum: Advocacy & Safety
11-03-13, 10:59 PM
Replies: 119
Views: 38,037
Posted By RobertHurst

The claim that has been disproven, waaaaay beyond...

The claim that has been disproven, waaaaay beyond a shadow of a doubt, is that bikes will endo at .6 -.7 g maximum. You don't even need a physical experiment to prove that. (As Joe Riel showed, just...
Forum: Advocacy & Safety
11-03-13, 07:33 PM
Replies: 119
Views: 38,037
Posted By RobertHurst

People will be repeating the braking-related...

People will be repeating the braking-related nonsense in that book and in Forester's book for decades I guess, even though the claims have been long disproven beyond a shadow of a doubt.

The...
Forum: Advocacy & Safety
11-02-13, 12:35 AM
Replies: 119
Views: 38,037
Posted By RobertHurst

Yah, if you're thinking about how to do it it's...

Yah, if you're thinking about how to do it it's too late.

"Only when it is known in the mind can the body know it; but knowing with the body is superior to knowing with the mind." -- Wu...
Forum: Advocacy & Safety
11-02-13, 12:30 AM
Replies: 119
Views: 38,037
Posted By RobertHurst

What is the deal around here. Is this thing on??

What is the deal around here. Is this thing on??
Forum: Advocacy & Safety
11-01-13, 11:59 PM
Replies: 119
Views: 38,037
Posted By RobertHurst

No, the max stop is performed by throwing the...

No, the max stop is performed by throwing the weight during the (short) moment of actual braking, to counter the force that is trying to throw the body forward. If you start with the weight already...
Forum: Advocacy & Safety
11-01-13, 09:45 PM
Replies: 119
Views: 38,037
Posted By RobertHurst

Please stop spreading baseless lies about bicycle...

Please stop spreading baseless lies about bicycle riding.
Forum: Classic & Vintage
11-01-13, 09:32 PM
Replies: 18
Views: 1,059
Posted By RobertHurst

Footpeg for coasting.

Footpeg for coasting.
Forum: Advocacy & Safety
11-01-13, 04:37 PM
Replies: 77
Views: 4,121
Posted By RobertHurst

These claims were disproved long ago by a simple...

These claims were disproved long ago by a simple physical experiment which your sources never bothered to perform.




... same with bikes. It's a simple experiment.
Forum: Advocacy & Safety
11-01-13, 04:21 PM
Replies: 119
Views: 38,037
Posted By RobertHurst

This is an easy experiment and I'd encourage...

This is an easy experiment and I'd encourage anybody who's been proclaiming on the subject to give it a try, or else cease their proclaiming. Bicycle, calibrated speedometer, tape measure. Maybe put...
Forum: Advocacy & Safety
10-30-13, 03:48 PM
Replies: 119
Views: 38,037
Posted By RobertHurst

Depends on the car, and how and when you move...

Depends on the car, and how and when you move your body mass while braking, and how good of a feel you have for the front brake.
Forum: Advocacy & Safety
10-30-13, 03:36 PM
Replies: 77
Views: 4,121
Posted By RobertHurst

Max deceleration on an upright bike is .85-.89...

Max deceleration on an upright bike is .85-.89 g's. Max deceleration of upright bike if rider remains static and seated is .6-.7 g's.
Forum: Advocacy & Safety
09-20-13, 09:27 PM
Replies: 28
Views: 1,887
Posted By RobertHurst

If there was a UPS van ahead, couldn't you...

If there was a UPS van ahead, couldn't you anticipate that he might swerve out into your path to avoid it?

Good thing you weren't a Prius eh.

Thinking of these things in terms of fault and...
Forum: Advocacy & Safety
09-20-13, 09:08 PM
Replies: 112
Views: 6,739
Posted By RobertHurst

I am sorry to report this statement is false. A...

I am sorry to report this statement is false. A driver could fail to notice, or "look through" a strobe light, any light.

And that's if they happen to be looking in the direction of the light,...
Forum: Advocacy & Safety
09-16-13, 01:19 PM
Replies: 17
Views: 1,181
Posted By RobertHurst

Keep in mind that no matter what you wear or...

Keep in mind that no matter what you wear or which lights you use, you could be overlooked by drivers, and ride accordingly.
Forum: Advocacy & Safety
09-07-13, 12:22 PM
Replies: 48
Views: 2,826
Posted By RobertHurst

Since Portland has way more than twice as many...

Since Portland has way more than twice as many cyclists per 100000 residents than the national average, it would seem that Portland is a particularly safe place to ride relatively speaking. Maybe we...
Forum: Advocacy & Safety
09-05-13, 01:37 PM
Replies: 48
Views: 2,826
Posted By RobertHurst

How many cycling fatalities have there been in...

How many cycling fatalities have there been in Portland in the past decade?
Forum: Advocacy & Safety
09-01-13, 11:28 PM
Replies: 9
Views: 968
Posted By RobertHurst

You'll get used to it. In the meantime, the...

You'll get used to it.

In the meantime, the thing is a lot wider than you might realize. Be really careful getting too close to parked cars and curbs, retaining walls and such. Notice how it...
Forum: Advocacy & Safety
08-30-13, 12:46 PM
Replies: 92
Views: 4,119
Posted By RobertHurst

Such responses make me wonder if J Forester has...

Such responses make me wonder if J Forester has any clue at all why collisions occur.
Forum: Advocacy & Safety
08-30-13, 12:38 PM
Replies: 92
Views: 4,119
Posted By RobertHurst

Both********** Both********************? I...

Both********** Both********************?

I think you just blew my mind.
Forum: Advocacy & Safety
08-30-13, 12:34 PM
Replies: 92
Views: 4,119
Posted By RobertHurst

I believe that bicyclists already enjoy more...

I believe that bicyclists already enjoy more privileges in traffic than drivers of cars, and 'equality' would be a step down. That's the way it should be. In fact I believe that bicyclists should...
Forum: Road Cycling
08-22-13, 08:40 PM
Replies: 109
Views: 7,175
Posted By RobertHurst

You'd get some benefit even that far back,...

You'd get some benefit even that far back, although a relatively tiny benefit compared to being right on their wheel.
Forum: Advocacy & Safety
08-16-13, 11:39 AM
Replies: 41
Views: 15,151
Posted By RobertHurst

I'm not passing judgment on anybody, settle down....

I'm not passing judgment on anybody, settle down. If it was properly seated you should have an alternate explanation for how the tube managed to find its way between the rim and the tire and explode....
Forum: Advocacy & Safety
08-16-13, 07:28 AM
Replies: 41
Views: 15,151
Posted By RobertHurst

It's possible that it was an old or damaged tire...

It's possible that it was an old or damaged tire that failed around the bead. Tires often get damaged there due to improperly adjusted brake pads that constantly rub on the tire. Also, rims can fail...
Forum: Advocacy & Safety
08-16-13, 07:21 AM
Replies: 41
Views: 15,151
Posted By RobertHurst

So you thought...

So you thought...
Forum: Advocacy & Safety
08-16-13, 07:19 AM
Replies: 41
Views: 15,151
Posted By RobertHurst

This is not a criticism of your mechanical skills...

This is not a criticism of your mechanical skills because it happens to the best of em occasionally. But that type of blowout is not the tube's fault. They occur because the tube was never completely...
Forum: Advocacy & Safety
08-15-13, 01:31 PM
Replies: 208
Views: 12,443
Posted By RobertHurst

Then you'd better figure out a way to miniaturize...

Then you'd better figure out a way to miniaturize yourself and ride around on the front of their smart phone.
Forum: Advocacy & Safety
08-15-13, 12:53 PM
Replies: 103
Views: 15,524
Posted By RobertHurst

Amazingly, this is just about exactly right for...

Amazingly, this is just about exactly right for an upright bicycle. That's about .88 g deceleration. For decades (prior to the publication of my book Art of Urban Cycling) cyclists were instructed...
Forum: Advocacy & Safety
08-14-13, 08:44 PM
Replies: 29
Views: 2,536
Posted By RobertHurst

Watch Where You're Going

Watch
Where
You're
Going
Forum: Advocacy & Safety
08-04-13, 09:48 PM
Replies: 24
Views: 954
Posted By RobertHurst

I think that's probably about right. 'Bents would...

I think that's probably about right. 'Bents would seem to be easier to overlook, and more likely to be run over in a collision.

But I will go out on limb and say that no useable stats exist on...
Forum: Mountain - Plains
07-30-13, 09:54 PM
Replies: 18
Views: 3,688
Posted By RobertHurst

Try Ohio Pass! The alternate route from Gunnison...

Try Ohio Pass! The alternate route from Gunnison to CB. Involves dirt road, mostly smooth. Gentle grades over the pass then bomb down into CB on dirt. Then ride the regular highway back to Gunnie.
...
Forum: Advocacy & Safety
07-27-13, 01:14 PM
Replies: 103
Views: 15,524
Posted By RobertHurst

This is pretty much getting into the realm of...

This is pretty much getting into the realm of nonsense. Increased speed makes it more likely that you will be overlooked by a turning/crossing motorist. It makes it more likely that somebody will...
Forum: Advocacy & Safety
07-27-13, 01:41 AM
Replies: 103
Views: 15,524
Posted By RobertHurst

30 mph! If you could ride 30 mph for any...

30 mph!

If you could ride 30 mph for any length of time you would be in the Tour Day Frantz.

Anyway...In populated areas, most of the car-bike crashes involve a motorist turning in front of or...
Forum: Advocacy & Safety
07-11-13, 12:54 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

I believe I did. Standing on the pedals...

I believe I did. Standing on the pedals occasionally will make your ride easier and more comfortable, for the reasons I already stated. It's easier to turn the pedals, and you get more low-speed...
Forum: Advocacy & Safety
07-10-13, 05:35 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

All that practicing stoppies and you never...

All that practicing stoppies and you never figured out how much easier it is to stop and control the bike if you're not sitting on the seat?
Forum: Advocacy & Safety
07-10-13, 05:27 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

Mountain biking does have a way of teaching the...

Mountain biking does have a way of teaching the universal truths of bicycle handling in a quick and memorable fashion.
Forum: Advocacy & Safety
07-10-13, 04:00 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

If you're pulling the brake lever while plopped...

If you're pulling the brake lever while plopped unmoving like a sack of flower on a bike seat, you'll have plenty of opportunity to practice stoppies, and crashes too.
Forum: Advocacy & Safety
07-10-13, 03:52 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

No... doesn't matter what kind of car you're...

No... doesn't matter what kind of car you're talking about, the driver just sits there and the mechanism does almost all the work of turning the car, moving the car, stopping the car, and how the...
Forum: Advocacy & Safety
07-10-13, 03:40 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

Another completely incorrect statement. The...

Another completely incorrect statement. The difference between a reasonably light bike and a very heavy one is obvious and completely changes the character of the ride.

I'm not saying you can't...
Forum: Advocacy & Safety
07-10-13, 03:34 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

In the real world, the bike which is comfortable...

In the real world, the bike which is comfortable for long distances is also comfortable for short distances. What is so hard to understand about that?



[/QUOTE]

Don't take my word for it,...
Forum: Advocacy & Safety
07-10-13, 03:20 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

Standing on the pedals does help. It is a very...

Standing on the pedals does help. It is a very useful technique. You asked about it. Now you act like my explanation is some sort of personal attack. Well, whatever.
Forum: Advocacy & Safety
07-10-13, 12:33 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

That sounds right up my alley. I will wear my...

That sounds right up my alley. I will wear my 90's vintage Mapei skinsuit.
Forum: Advocacy & Safety
07-10-13, 12:31 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

You live in a mysterious universe, jaywak3r. ...

You live in a mysterious universe, jaywak3r.



This is completely wrong, and Joe Riel did the mathematical proof as well (google is your friend). Getting off the saddle and behind it allows for...
Forum: Advocacy & Safety
07-10-13, 12:18 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

Well if you're doing a lot of starting and...

Well if you're doing a lot of starting and stopping it helps in that regard... more torque for easier accelerations and also better low speed control. Varying the position also helps keep certain...
Forum: Advocacy & Safety
07-10-13, 12:06 PM
Replies: 462
Views: 24,008
Posted By RobertHurst

Good point, for that matter why would you want to...

Good point, for that matter why would you want to go through all the trouble of fixing a flat when you can just buy a brand new bike, with tires already pumped up by the very knowledgeable bike shop...
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