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Search: Posts Made By: prathmann
Forum: Foo 05-24-17, 05:44 PM
Replies: 12
Views: 209
Posted By prathmann
Hmm. My REI card gives me 2% back from buying...

Hmm. My REI card gives me 2% back from buying groceries. Haven't had any fraud issues with it yet but a few years back their fraud detection software would sometimes disable my card if my daughter...
Forum: Fifty Plus (50+) 05-23-17, 02:23 PM
Replies: 28
Views: 640
Posted By prathmann
Here's a picture of a friend nearing the summit...

Here's a picture of a friend nearing the summit of a local short, but steep hill with a team-mate giving him a good-natured push. The club ride was in honor of his 85th birthday. His main sport is...
Forum: Folding Bikes 05-22-17, 09:38 PM
Replies: 19
Views: 349
Posted By prathmann
Bike Friday uses regular commercial suitcases. ...

Bike Friday uses regular commercial suitcases. Initially they used a Samsonite Oyster, then switched to a slightly larger Carlton (which I have), and now use a Samsonite Flite. The only difference...
Forum: Advocacy & Safety 05-22-17, 09:36 AM
Replies: 96
Views: 1,473
Posted By prathmann
I have confidence in the technology for two...

I have confidence in the technology for two primary reasons:
1) The Google car fleet already has a better safety record than would be expected for human drivers over the same number of miles.
2)...
Forum: Folding Bikes 05-21-17, 09:39 PM
Replies: 25
Views: 483
Posted By prathmann
Still easy to turn the forks 180 degrees from...

Still easy to turn the forks 180 degrees from their intended orientation in the process of putting together the other bike components. A picture of the bike from the side would clear this up. While...
Forum: Advocacy & Safety 05-20-17, 07:39 PM
Replies: 96
Views: 1,473
Posted By prathmann
I strongly suspect that these ethical conundrums...

I strongly suspect that these ethical conundrums are of far more interest to philosophers and column/blog writers than they are to the people actually developing the autonomous car software. I'd...
Forum: Folding Bikes 05-20-17, 01:31 PM
Replies: 14
Views: 416
Posted By prathmann
To each his own, but that hasn't been my...

To each his own, but that hasn't been my experience. I estimate that at least 70% of my maintenance time is due to tires/tubes and another 10% to brakes. Eliminating the gears would only have...
Forum: Recreational & Family 05-20-17, 08:27 AM
Replies: 15
Views: 953
Posted By prathmann
Neither the child seat on my bike nor the trailer...

Neither the child seat on my bike nor the trailer we sometimes used had any suspension other than the tires. Doesn't seem to have hurt our daughter in college as she now teaches at the med school in...
Forum: Folding Bikes 05-19-17, 10:48 PM
Replies: 25
Views: 483
Posted By prathmann
That "design flaw" is common to huge numbers of...

That "design flaw" is common to huge numbers of bicycles that are ridden without incident on a daily basis. My favorite bike has considerable toe overlap and has been ridden for over 150,000 miles...
Forum: Folding Bikes 05-19-17, 02:22 PM
Replies: 14
Views: 388
Posted By prathmann
Hope you enjoy your new old bike! Mine was about...

Hope you enjoy your new old bike! Mine was about 300 before yours and came with 105 parts instead of 600. It's also seen many more miles over the years but is still running fine with mostly the...
Forum: General Cycling Discussion 05-16-17, 09:02 AM
Replies: 21
Views: 433
Posted By prathmann
Probably for a similar reason for why we drive on...

Probably for a similar reason for why we drive on parkways and park on driveways.
Forum: Classic & Vintage 05-15-17, 09:30 PM
Replies: 27
Views: 764
Posted By prathmann
All the loop detector systems that I'm aware of...

All the loop detector systems that I'm aware of since the 1950s work on the same principle as the metal detectors people use at the beach to detect coins and jewelry in the sand - and they're not...
Forum: Classic & Vintage 05-14-17, 10:54 PM
Replies: 27
Views: 764
Posted By prathmann
Sorry to hear of your crash - sounds like the...

Sorry to hear of your crash - sounds like the motorist was probably going too fast and/or not paying attention and didn't see you in time.

Have you checked with the local traffic authority in your...
Forum: General Cycling Discussion 05-11-17, 06:26 PM
Replies: 138
Views: 2,397
Posted By prathmann
Deliberate counter-steering certainly moves the...

Deliberate counter-steering certainly moves the wheel track to the side of a line dropped down from the CofG. The normal back-and-forth balancing steering corrections seek to move the wheel track...
Forum: General Cycling Discussion 05-11-17, 10:24 AM
Replies: 138
Views: 2,397
Posted By prathmann
Whether it would be with or without...

Whether it would be with or without counter-steering seems like a question of semantics. The turn to the right is preceded by a series of tiny balancing turns to keep a straight path as much as...
Forum: Bicycle Mechanics 05-10-17, 10:55 AM
Replies: 20
Views: 448
Posted By prathmann
Can't see any pictures, but I'd avoid riding on...

Can't see any pictures, but I'd avoid riding on any crank that has a visible crack. Lots of reports of rather nasty crashes resulting from cranks that failed unexpectedly and suddenly. And it's...
Forum: Bicycle Mechanics 05-10-17, 08:26 AM
Replies: 6
Views: 210
Posted By prathmann
It's a fairly common problem. If there's...

It's a fairly common problem. If there's insufficient lubrication of the bearing balls in the headset races you can get some spalling of the race and a tendency for the balls to fall into these...
Forum: General Cycling Discussion 05-08-17, 06:36 AM
Replies: 138
Views: 2,397
Posted By prathmann
The actual turns in the two cases will be...

The actual turns in the two cases will be identical - only the timing is a bit different. With an obvious counter-steer you can immediately follow it with your desired turn whereas if you initiate...
Forum: General Cycling Discussion 05-08-17, 05:19 AM
Replies: 138
Views: 2,397
Posted By prathmann
No, you can easily get even a tight turn that's...

No, you can easily get even a tight turn that's initiated by a very small lean (i.e. by an imperceptibly small counter-steer). Just wait for the initial tiny lean to grow for a second or so and...
Forum: General Cycling Discussion 05-07-17, 08:15 PM
Replies: 20
Views: 670
Posted By prathmann
I've certainly been in flood waters so deep that...

I've certainly been in flood waters so deep that I couldn't use my car, but never so deep that I couldn't still bike.
Forum: General Cycling Discussion 05-07-17, 08:09 PM
Replies: 138
Views: 2,397
Posted By prathmann
The slower you're going, the less lean you need...

The slower you're going, the less lean you need for a particular turn. But you can't keep the bike/rider completely upright and also make it turn. The moment you turn the handlebars to the right...
Forum: Touring 05-07-17, 08:29 AM
Replies: 32
Views: 846
Posted By prathmann
Never used one on a tour since I had adequate...

Never used one on a tour since I had adequate other rain gear. But I did use one for awhile for a fairly short commute. Similar to one of the pictures above it had a C-clamp at the handle end that...
Forum: Classic & Vintage 05-02-17, 07:01 PM
Replies: 24
Views: 525
Posted By prathmann
Probably 165mm or less but it might be harder to...

Probably 165mm or less but it might be harder to find. Odd that crank arm lengths are clustered in such a narrow range. My bikes range from 165mm to 175mm and they all feel fine to me. Would...
Forum: Advocacy & Safety 04-30-17, 07:10 PM
Replies: 281
Views: 9,720
Posted By prathmann
At least two of the bikes apparently had the...

At least two of the bikes apparently had the legally required rear reflectors (plus some optional reflective clothing). Ontario rules do not require any rear lighting. A front light is required but...
Forum: Road Cycling 04-30-17, 06:40 PM
Replies: 229
Views: 6,364
Posted By prathmann
Grab your water bottle and fling it off to the...

Grab your water bottle and fling it off to the side.

But I agree that normally we all steer our bikes using 'counter steering' whether we think we do or not. It's so intuitive that we don't...
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