Latest Activity

Colin replied to Colin's discussion Campbell St Cycleway Progress
"Every day Crown St has a large number of cyclists, and virtually all of them ride in the door zone…"
1 minute ago
PeterT replied to PeterT's discussion Battery heated Glove liners
"Long sleeves? - check- virtually always Sunscreen? - not required because of the…"
13 minutes ago
herzog replied to PeterT's discussion QLD police hunt for cyclist
"This is being discussed on BNA. One rider reported this 70kph pass yesterday, with perfect video…"
14 minutes ago
Andrew K replied to Andrew K's discussion Cycling item found, Dolls Pt, 22 August between 7.40 - 8.40 am
"Alas no Peter, not too many of those on the cycleway. And if they were, it would probably be in…"
32 minutes ago
John Knight replied to PeterT's discussion Battery heated Glove liners
"How much more soft are you going to get Peter? Electric bikes, now electric gloves?? What's…"
34 minutes ago
PeterT replied to Andrew K's discussion Cycling item found, Dolls Pt, 22 August between 7.40 - 8.40 am
"A yacht perchance? say about a 30 footer with a half consumed case of beer? ... not that I'm…"
37 minutes ago
PeterT replied to Pat The Rat's discussion New Directions for BNSW
"I don't want to bash them, they did a pretty good job on that by themselves in the…"
44 minutes ago
Robflyte replied to PeterT's discussion Battery heated Glove liners
1 hour ago
PeterT posted discussions
1 hour ago
baa baa replied to jelyot's discussion IDENTIFICATION of cyclists
"Nothing about bikes in my precinct newsletter (well August anyway). Your Chairperson may have be…"
1 hour ago
Andrew K posted a discussion

Cycling item found, Dolls Pt, 22 August between 7.40 - 8.40 am

Lose something on the southern commute this morning near the Sailing Club at Dolls Point?Describe…See More
1 hour ago
Mark replied to Colin's discussion Campbell St Cycleway Progress
"No cyclist with even limited experience rides anywhere near these lanes. A "ghostbuster"…"
1 hour ago

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Blog Posts

Lux and Lumens and bike lights

Posted by Robflyte on August 20, 2014 at 10:30am 0 Comments

Lux: a measurement of light taking area into account.

Lumens: total amount of light emitted from a source.



A 1000 lumen light source over directed over 1msq is 1000lux.

A 1000 lumen light source over 10msq is 100lux.



lux (with almost all bike lights) measured on the ground falls off with distance as the light spreads.



As a photographer using artifical lighting you understand light fall-off, the inverse square law, feathering.



most bike…

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Cycling on holidays

Posted by Helen Leung on August 18, 2014 at 4:43am 0 Comments

I'm currently on holidays in Europe. Just came back from a bike ride on the streets of Berlin. I just have to write down here that I have never felt so safe riding a bike as I have in Berlin! 

They were so far ahead of their times in WW2

Posted by Dabba on August 9, 2014 at 10:34am 6 Comments

This was taken at Duxford RAF Museum near Cambridge UK.

Where in the world is my bike?

Posted by Mark Lambert on August 8, 2014 at 9:47pm 11 Comments

The first correct answer wins a child.

 
 
 

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