Search: Posts Made By: Giro
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09-01-12, 07:37 PM
Replies: 21
Views: 800
Posted By Giro

96% in 1995 report, see also North Carolina's online database

The Cornell University Bicycle & Pedestrian website (http://www.bike.cornell.edu/) has a 1995 report...
Forum: Commuting
08-18-12, 10:12 PM
Replies: 8
Views: 865
Posted By Giro

Try Craigslist; reduce noise with trainer tire & acoustic isolation/damping

One thing to try is keep watching and also posting a "Wanted" on Chicago's Craigslist for any of the Kurt Kinetic fluid resistance or any 1Up trainers. They have the reputation for both being quiet...
08-06-12, 04:36 PM
Replies: 6
Views: 783
Posted By Giro

Make a snoot from an alumium can.

Get an shiny finished aluminum can (e.g. Diet Pepsi, Silver Bullet beer) , some reasonably sturdy scissors, some filament/strapping tape and roll some snoots (http://en.wikipedia.org/wiki/Snoot) for...
07-29-12, 11:30 PM
Replies: 13
Views: 738
Posted By Giro

NHTSA FARS data on bicycle fatalities vs posted speed limit

I have a recent post on this subject HERE (http://www.bikeforums.net/showthread.php/819780-Who-uses-a-flashing-headlight-Why?p=14269288&highlight=#post14269288). In brief:
The online & downloadable...
07-29-12, 11:01 PM
Replies: 10
Views: 663
Posted By Giro

Motorcycle rider conspicuity and crash related injury: case-control study.

The study you may be thinking of is: Motorcycle rider conspicuity and crash related injury: case-control study. British Medical Journal, 2004 Apr 10;328(7444):857. The entire paper is available...
Forum: Recumbent
07-28-12, 10:16 AM
Replies: 3
Views: 1,075
Posted By Giro

I suggest you try both searching and posting your...

I suggest you try both searching and posting your question on BentRiderOnline (http://www.bentrideronline.com/). I think this has a larger number of recumbent cyclist members and hence you are more...
Forum: Recumbent
06-08-12, 11:26 AM
Replies: 19
Views: 8,475
Posted By Giro

Driveline chainring guards on eBay are another alternative

Over a year ago I (based on postings by another recumbent rider either here or on BentRiderOnline) purchased a different item from eBay. Driveline (made in China) sells recumbent-sized (50+ tooth...
Forum: Commuting
05-31-12, 09:01 PM
Replies: 41
Views: 7,511
Posted By Giro

Two other commercial products: Flash Flag and The Whizzzz Windmill Bicycle Reflector

There are two other commercially available products in North America, the Flash Flag and The Whizzzz Windmill Bicycle Reflector. Both can be folded flat against the bike when you do not want them...
05-31-12, 01:02 PM
Replies: 16
Views: 6,993
Posted By Giro

Use Derailed's method on a measured (Google or Bing maps) course

Derailed's post above succinctly describes the late, great Sheldon Brown's method for precise calibration. If you ride a measured course, all you do is go for a bike ride and no fiddling around with...
Forum: Commuting
05-24-12, 09:13 PM
Replies: 82
Views: 3,089
Posted By Giro

Some more FARS data on posted speed limit & bicyclist location in fatal crashes

Thank you. For the roads you are riding on, you might also be interested in the following NHTSA FARS data.

The 2009 data show the following for the posted speed limit where fatal...
05-24-12, 11:45 AM
Replies: 6
Views: 520
Posted By Giro

L.A.B shouldn't be surprised on high % Overtaking; instead analyze FARS in depth

The linked League of American Bicyclists article states "... We were surprised to learn that more than a third (35%) of cyclists killed were hit from behind. This is a considerably higher share than...
Forum: Commuting
05-24-12, 01:46 AM
Replies: 82
Views: 3,089
Posted By Giro

Motorist Overtaking Bicyclist was 24.76% of fatal bike/motorvehicle crashes in 2010

This is unfortunately not true. I think this low percentage number keeps getting repeated because the NHTSA FARS (Fatality Analysis Reporting System) data records the crashes from the perspective of...
05-07-12, 08:22 PM
Replies: 4
Views: 836
Posted By Giro

Very nice and as noted, it moves the bike forward...

Very nice and as noted, it moves the bike forward or backward as it is hoisted up which can help fit it away in a corner (and it is not as likely to hit the tire on the wall). Come to think of it,...
05-03-12, 07:02 PM
Replies: 29
Views: 9,216
Posted By Giro

Also suggest you get a helmet light.

If you are regularly commuting in the dark, may I suggest also getting a good helmet light? Some of the relatively low-cost flashlights using a single LiIon 18650 or the smaller 14500 complement a...
05-02-12, 10:31 AM
Replies: 11
Views: 1,583
Posted By Giro

Panasonic LX5 does RAW, good video, offers full...

Panasonic LX5 does RAW, good video, offers full manual (including manual focusing), custom settings selectable by dial atop camera AND Panasonic figured out that there should be a safety override...
04-27-12, 09:24 PM
Replies: 4
Views: 2,640
Posted By Giro

Better yet, take a bike ride on a measured course...

Better yet, take a bike ride on a measured course and use the late, great Sheldon Brown's method (http://www.sheldonbrown.com/cyclecomputer-calibration.html#measuredmile). Google maps and the like...
Forum: Recumbent
04-27-12, 09:13 PM
Replies: 29
Views: 6,863
Posted By Giro

They come in different sizes for different...

They come in different sizes for different recumbent seats and in two thicknesses, standard and comfort. They differ from the stock filter foam in that they are firmer, do not compress over the...
Forum: Recumbent
04-26-12, 05:34 PM
Replies: 29
Views: 6,863
Posted By Giro

The ride is so much more comfortable than the...

The ride is so much more comfortable than the Continental Sport Contact I had on there. I am using an Euromesh seat reclined to about 29 degreees from horizontal and the comfort thickness (but still...
Forum: Recumbent
04-25-12, 05:41 PM
Replies: 29
Views: 6,863
Posted By Giro

50 mm is about the maximum on a 135 mm wide rear dropout width high racer

At least on my older, steel, Giro 26 the limiting factor is not the wheel fitting in the frame, the problem is that tires over 50mm wide result in the chain lightly rubbing the tire sidewall when...
04-17-12, 10:09 AM
Replies: 40
Views: 3,822
Posted By Giro

A recent issue of Consumer Reports had an article...

A recent issue of Consumer Reports had an article on the electronic vehicle to vehicle wireless communication systems under development. These are going to do things such as warn you about a vehicle...
Forum: Recumbent
04-17-12, 09:48 AM
Replies: 29
Views: 6,863
Posted By Giro

I take it you have the Giro with the small front...

I take it you have the Giro with the small front wheel, not the Giro 26. One upgrade to consider is the Euromesh or even carbon seat both to drop the weight (more important if your route has...
Forum: Commuting
04-16-12, 12:29 AM
Replies: 57
Views: 2,976
Posted By Giro

Intersections not 99% of crashes. Also depends on location e.g. urban vs rural

Well, maybe not 99%: Page 27 of North Carolina Bicycle Crash Facts 2004 - 2008 (http://www.pedbikeinfo.org/pbcat/pdf/summary_bike_facts04-08.pdf) summarizes the data on 4,851 bicycle crashes. 52%...
03-16-12, 11:48 AM
Replies: 35
Views: 1,908
Posted By Giro

OccuNomix offers two color, front zip, different sizes for optimal fit, etc

One manufacturer of construction, rescue, etc. occupation related reflective vests with a wide variety of styles, colors, and sizes (yes, reflective vests in multiple sizes, model below is in at...
02-25-12, 11:20 AM
Replies: 105
Views: 3,991
Posted By Giro

It needs to fold, there are some commercial spacers, and some studies of them.

The Flash Flag linked in a previous post is a commercially available approach that is much more practical. The compression spring at its base results in the flag and pole wildly gyrating in a...
02-21-12, 09:00 AM
Replies: 37
Views: 2,460
Posted By Giro

Crash-Type Manual for Bicyclists by Carol Tan illustrates most crash-types

The Crash-Type Manual for Bicyclists (http://www.fhwa.dot.gov/publications/research/safety/pedbike/96104/) by Carol Tan illustrates most of the Pedestrian and Bicyclist Crash Analysis Tool (PBCAT)...
Forum: Commuting
02-16-12, 08:03 PM
Replies: 26
Views: 912
Posted By Giro

Choose white, yellow or some conspicuous color other than black etc.

If safety is one of your considerations, I suggest getting a helmet in a higher visibility color than, say, black or green. White or yellow will add somewhat to your conspicuity, reducing the chance...
02-16-12, 11:24 AM
Replies: 43
Views: 1,799
Posted By Giro

Crash-types for bicyclists killed by motor vehicles, 2010

The 2010 NHTSA Fatality Analysis Reporting System data added some data fields from the Pedestrian and Bicyclist Crash Analysis Tool (PBCAT). Here is the table for the most common fatal crash-types...
02-16-12, 01:32 AM
Replies: 56
Views: 3,591
Posted By Giro

Cabs had the 3rd light & non-cabbie drivers rear-ended the cabs; some final thoughts

It was the NYC cabs that were equipped with the 3rd brake light, not the other cars. Thus the outcome was the incidence of the cabs being rear-ended by (largely) non-cabbie drivers.

I suppose if...
02-15-12, 12:29 PM
Replies: 37
Views: 2,460
Posted By Giro

Vehicle Type in 1,711 Motorist Overtaking Bicyclist Crashes in North Carolina

North Carolina's PBCAT database (http://www.pedbikeinfo.org/pbcat/_bikequery.cfm) lets you do online cross-tabulations on the 12,671 bicycle crashes in the state from 1997 through 2009. The Motorist...
02-14-12, 11:27 AM
Replies: 56
Views: 3,591
Posted By Giro

We agree; flashing AND constant probably best. Standardization would be beneficial.

We agree. Unfortunately, I do not think either the FARS data fields nor the subset of PBCAT data fields that NHTSA records have a field with any information on the bicycle lighting (will check when...
02-13-12, 11:02 PM
Replies: 56
Views: 3,591
Posted By Giro

Motorist Overtaking crash-types are the most common, the most fatal, & rural /night

I periodically see the statement that few bicyclists are hit from behind. As a absolute number, that is true. However it is actually the most common serious motor vehicle - bicyclist crash-type.
...
02-13-12, 12:49 AM
Replies: 56
Views: 3,591
Posted By Giro

Some links to research on bicyclist conspicutiy which often inculde tail lights.

There is a fair amount of research out there on conspicuity which sometimes deals with lights. However, the studies are not without problems and is not easy to prove something actually works. See...
Forum: Commuting
02-12-12, 01:06 PM
Replies: 213
Views: 24,627
Posted By Giro

High vis reflect vest, lights night & day + refective tape covers all conditions

These are, of course, not mutually exclusive and each is more conspicuous in some circumstances than others, so I use lights (bright & blinking in day particularly), high visibility clothing colors,...
02-11-12, 12:18 PM
Replies: 118
Views: 4,471
Posted By Giro

Thank you, wphamilton. I've fixed the links &...

Thank you, wphamilton. I've fixed the links & added a p.s. since where you click to get started is hard to find in the upper right part of the page.
02-11-12, 12:33 AM
Replies: 118
Views: 4,471
Posted By Giro

PBCAT crash-typing distinguishes between driveway and roadway.

Acutally, PBCAT crash typing is very explicit about driveways: "Driveways are considered to be nonintersection locations. The exception is signalized commercial driveways which should be coded as ...
02-11-12, 12:16 AM
Replies: 118
Views: 4,471
Posted By Giro

N Carolina's PBCAT inquiry and now NHTSA's FARS have your answer

I always encourage people to find out for themselves, and in this instance both North Carolina's online query of bicycle crash data (http://www.pedbikeinfo.org/pbcat/_bikequery.cfm) from 1997 through...
02-10-12, 11:17 PM
Replies: 118
Views: 4,471
Posted By Giro

Motorist Overtaking group is most frequent bike-motor vehicle crash type

Given the length of this thread, you probably missed my post #61 which has exactly this information for 2010 from the NHTSA Fatality Analysis Reporting System which anyone can go to and get the data...
02-08-12, 12:12 AM
Replies: 118
Views: 4,471
Posted By Giro

North Carolina, 1997-2009 Bicyclist position before crash vs Rural/Urban

Roughly twice as many urban crashes, but MUP numbers about same. Travel lane comparatively worse in Rural. Question is, as always, how many miles of MUP in Rural vs Urban and number of bicyclists at...
02-06-12, 07:03 PM
Replies: 118
Views: 4,471
Posted By Giro

Clothing yes. Lanes and Paths maybe, maybe not; Rural vs Urban, etc.?

Clothing yes, for example:

Cyclist visibility at night: Perceptions of visibility do not necessarily match reality. Journal of the Australasian College of Road Safety – August 2010
Abstract...
02-04-12, 10:45 PM
Replies: 118
Views: 4,471
Posted By Giro

National Highway Traffic Safety Administration FARS data now has Bicycle Crash-Typing

A few weeks ago I learned that beginning in 2010, the National Highway Traffic Safety Administration (NHSTA) includes Pedestrian and Bicyclist Crash Analysis Tool (PBCAT) data in their extensive...
01-27-12, 10:57 AM
Replies: 29
Views: 1,562
Posted By Giro

Actually, PDW's second email that I failed to quote states how to tell packages apart

The indenting in my email quote was not as wide as it should have been to clearly distinguish the quoted email from my thoughts. Actually PDW's first email reply did not state how to tell the...
01-26-12, 11:49 AM
Replies: 29
Views: 1,562
Posted By Giro

As of August 2011, flash patterns have changed three times per Portland Design Works

In August 2011 I emailed Portland Design Works the following:
... bought a third Radbot 1000 today to supplement the two we already own and like very much. We were ... disappointed with the new...
Forum: Recumbent
01-08-12, 02:56 PM
Replies: 13
Views: 2,859
Posted By Giro

Other than the stock Kenda's, the smallest I've...

Other than the stock Kenda's, the smallest I've gone is Conti SportContact 32-559 front and 42-559 rear. However, ever since I put a Schwalbe Big Apple 50-559 on the rear, I've been reluctant to go...
Forum: Recumbent
01-07-12, 10:15 AM
Replies: 13
Views: 2,859
Posted By Giro

Good decision in view of what you want. Larger tires on Giro etc. give smoother ride

I think you made a reasonable decision for what otherwise seems a very good buy.

One difference between the Corsa and the Giro 26 is the Giro can take much wider tires (up to about 50mm) which...
11-02-11, 07:34 PM
Replies: 3
Views: 630
Posted By Giro

Snoots: The inelegant but low cost way to direct more lumens to where you want them

As LED's become more powerful, there have been more threads about finding reasonable cost headlights that put the lumens where you want them. Since most bike lights and flashlights do not do a good...
Forum: Commuting
10-13-11, 09:54 PM
Replies: 31
Views: 1,414
Posted By Giro

Helmet light with flash/strobe, step up to LiIon rechargeables, beware of glare

As others have noted, a helmet light is useful both day and night; if I had to use just one headlight it would be a good helmet light. You can see ahead into turns, more likely to get the attention...
10-11-11, 01:42 PM
Replies: 56
Views: 2,315
Posted By Giro

Research sources and the limitations of the research

As noted in this thread, there is a fair amount of research out there but it is not without problems and is not easy to prove something actually works.

You could start by running the following...
10-10-11, 10:23 PM
Replies: 24
Views: 977
Posted By Giro

Boss Safety Supply & OccuLux vests

Boss Safety Supply (http://www.bosssafety.com/c-194-safety-vests.aspx). The OccuLux vests cost a bit more but are nice and come sized so you get a decent fit. I prefer the zip front ones to...
09-24-11, 09:40 AM
Replies: 15
Views: 1,418
Posted By Giro

UniqueFire G10 CREE XP-G R5 6-Mode 350-Lumen White LED Flashlight (1*14500)

While I would not believe the "350-Lumen", this a quite small [3.94 in x 0.87 in x 0.87 in (10.0 cm x 2.2 cm x 2.2 cm) 1.87 oz (53 g)] bright flashlight. It provides both a slow (about 1.6 Hz) and...
09-18-11, 10:11 PM
Replies: 34
Views: 1,941
Posted By Giro

Detection + Recognition = MechBgone's & KTesh's bikes

MechBgone's & KTesh's bikes demonstrate what you want to do. The literature on bicyles (aka "pedal cycles" in many studies) indicates you want to be detected (obviously) and then recognized or...
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