Thread: How much light is enough?
View Single Post
Old 08-18-08 | 07:13 AM
  #42  
cyccommute's Avatar
cyccommute
Mad bike riding scientist
Titanium Club Membership
20 Anniversary
Community Builder
Community Influencer
 
Joined: Nov 2004
Posts: 29,138
Likes: 6,194
From: Denver, CO

Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones

Originally Posted by bmorey
I've run a similar setup. The luminous efficacy of an MR16 is 12 to 15 lumens/watt. That makes an MR16 300 lumens max.
You are off by a factor of over 2 in the efficiency of the MR16. At nominal voltage (12V), an MR16 puts out around 40 lumens/W. At 20% overvoltage, it puts out up to 70 lm/W. Follow acroy's link.
__________________
Stuart Black
Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!





cyccommute is offline  
Reply
0