Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Foo Off-Topic chit chat with no general subject.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-15-09, 01:03 AM   #1
RubenX 
Look! My Spine!
Thread Starter
 
RubenX's Avatar
 
Join Date: Apr 2008
Location: Kissimmee, FL
Bikes:
Posts: 619
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
How many watts does a 50w bulb uses?

Halogen 50w in this case.... how many?
RubenX is offline   Reply With Quote
Old 08-15-09, 01:11 AM   #2
Siu Blue Wind
Metta
 
Siu Blue Wind's Avatar
 
Join Date: Apr 2005
Bikes:
Posts: 11,024
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 161 Post(s)
__________________
Quote:
Originally Posted by Buddha
We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.
Quote:
Originally Posted by making View Post
Please dont outsmart the censor. That is a very expensive censor and every time one of you guys outsmart it it makes someone at the home office feel bad. We dont wanna do that. So dont cleverly disguise bad words.
Siu Blue Wind is offline   Reply With Quote
Old 08-15-09, 01:14 AM   #3
RubenX 
Look! My Spine!
Thread Starter
 
RubenX's Avatar
 
Join Date: Apr 2008
Location: Kissimmee, FL
Bikes:
Posts: 619
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by Siu Blue Wind View Post
She's pipi and needs a diaper change... size 3 IMHO, huggies little movers will work the best. cute tho

now back to the wattage... I've been told that halogen lights are more efficient and on the package, instead of posting the actual wattage used by the bulb, they put the aprox wattage of an incandescent bulb that will produce a similar amount of light. Supposedly, this help customers choose the right wattage for their application. If this is true, the question remains... if it's BS, then never mind ....

Last edited by RubenX; 08-15-09 at 01:18 AM.
RubenX is offline   Reply With Quote
Old 08-15-09, 01:18 AM   #4
mushrooshi
Hills scare me.
 
mushrooshi's Avatar
 
Join Date: Aug 2009
Location: San Antonio, Texas
Bikes: 2008 Giant FCR3
Posts: 97
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It could be more complicated than it looks. For example, computers:

I have a 700 watt PSU on my gaming rig, but the most it uses up is 500w, and when its just idling it uses up 100w probably.
mushrooshi is offline   Reply With Quote
Old 08-15-09, 06:51 AM   #5
Michigander
Senior Member
 
Michigander's Avatar
 
Join Date: May 2005
Bikes: Giant ATX 1200, Schwinn Peleton
Posts: 1,724
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 119 Post(s)
If you don't trust what the box says, why not get a clamp on amp meter and a voltmeter and go about figuring it out for sure?
__________________
Bring back the Sig Test!


(\__/)
(='.'=)
(")_(")
Michigander is offline   Reply With Quote
Old 08-15-09, 06:56 AM   #6
RonH
Life is good
 
RonH's Avatar
 
Join Date: Jan 2001
Location: Not far from the Withlacoochee Trail. 🚴🏻
Bikes: 2001 Litespeed Tuscany and 2014 Cannondale SuperSix EVO Hi-Mod
Posts: 16,666
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 178 Post(s)
You should have made this multiple choice or a poll.
__________________


The LORD is merciful and gracious, slow to anger, and plenteous in mercy. - Psalm 103:8
RonH is offline   Reply With Quote
Old 08-15-09, 06:57 AM   #7
Wilbur Bud
Senior Member
 
Join Date: Oct 2006
Location: Fishers Indiana
Bikes: Longbikes Slipstream
Posts: 367
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Comparison of typical bulbs

Who's to say if that study is accurate, but it should be close. The industry rating system of Watts, in practice, is now more like a rating of illumination (lumens), so the more practical comparison is lumens per watt.
40W standard bulb measures 40 watts and 480 lumens
40W halogen bulb measures 42 watts and 665 lumens

60W standard bulb measures 60 watts and 880 lumens
60W halogen bulb measures 52 watts and 885 lumens

50W halogen isn't listed, but should be between 42 and 52 watts, probably with more light than a 50W standard incandescent bulb, if it's critical to know for sure (maybe you are choosing a battery size for your commuter bike and want to run a 50W halogen bulb), then you should measure your specific bulb.
__________________
Longbikes Slipstream
Wilbur Bud is offline   Reply With Quote
Old 08-15-09, 07:41 AM   #8
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Bikes: 2 many
Posts: 15,767
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 130 Post(s)
How fast will my bike go?
2manybikes is offline   Reply With Quote
Old 08-15-09, 08:45 AM   #9
skiahh
Senior Member
 
skiahh's Avatar
 
Join Date: Aug 2003
Location: CO Springs, CO
Bikes: 08 Stumpjumper FSR Expert, 02 Litespeed Tuscany, 04 Specialized S-Works Epic
Posts: 1,035
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Who's buried in Grant's Tomb?
skiahh is offline   Reply With Quote
Old 08-15-09, 08:49 AM   #10
Siu Blue Wind
Metta
 
Siu Blue Wind's Avatar
 
Join Date: Apr 2005
Bikes:
Posts: 11,024
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 161 Post(s)
What's heavier, a pound of butter or a pound of feathers?
__________________
Quote:
Originally Posted by Buddha
We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.
Quote:
Originally Posted by making View Post
Please dont outsmart the censor. That is a very expensive censor and every time one of you guys outsmart it it makes someone at the home office feel bad. We dont wanna do that. So dont cleverly disguise bad words.
Siu Blue Wind is offline   Reply With Quote
Old 08-15-09, 09:17 AM   #11
sknhgy 
Dirt Bomb
 
sknhgy's Avatar
 
Join Date: Aug 2006
Location: Illinois
Bikes:
Posts: 2,660
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 387 Post(s)
50?

Or you could play with numbers.

Power = current x voltage, I think. If you know the wattage - 50w in this instance - and you know the voltage you are using, then you put the knowns in the equation and solve for the unknown. Like this:
50w = Amps x 120 volts

50/120 = .42 amps

That light uses less than 1/2 amp.

Am I correct and does that help?
sknhgy is offline   Reply With Quote
Old 08-15-09, 09:22 AM   #12
Wordbiker
Pwnerer
 
Wordbiker's Avatar
 
Join Date: Jun 2005
Location: Pagosa Springs, CO, USA
Bikes: Road, MTB, Cruiser, Chopper, BMX
Posts: 2,907
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
__________________
Quote:
Originally Posted by ahsposo View Post
Ski, bike and wish I was gay.
Wordbiker is offline   Reply With Quote
Old 08-15-09, 12:56 PM   #13
iamlucky13
Footballus vita est
 
iamlucky13's Avatar
 
Join Date: Jun 2002
Location: Portland, OR
Bikes: Trek 4500, Kona Dawg
Posts: 2,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A 50 Watt bulb consumes (or should at steady state) 50 Watts. The difference in efficiency is how much light it puts out while consuming 50 Watts. Halogens are about twice as efficient as normal incandescents.

The packaging should also say their actual Wattage rating somewhere. That's kind of important for not starting fires...
__________________
"The internet is a place where absolutely nothing happens. You need to take advantage of that." ~ Strong Bad
iamlucky13 is offline   Reply With Quote
Old 08-15-09, 01:13 PM   #14
FlatMaster
Genius
 
FlatMaster's Avatar
 
Join Date: Jan 2008
Location: Auburn, AL
Bikes: Specilized Sirrus
Posts: 324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by sknhgy View Post
50?

Or you could play with numbers.

Power = current x voltage, I think. If you know the wattage - 50w in this instance - and you know the voltage you are using, then you put the knowns in the equation and solve for the unknown. Like this:
50w = Amps x 120 volts

50/120 = .42 amps

That light uses less than 1/2 amp.

Am I correct and does that help?
You would need RMS voltage I think.
FlatMaster is offline   Reply With Quote
Old 08-15-09, 01:36 PM   #15
mlts22 
Senior Member
 
Join Date: Aug 2006
Bikes:
Posts: 998
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think the confusion is due to CFL advertising where they say a 15 watt bulb puts out as many lumens as a 50 watt incandescent bulb.
mlts22 is offline   Reply With Quote
Old 08-15-09, 02:24 PM   #16
kache_98
Senior Member
 
kache_98's Avatar
 
Join Date: Mar 2008
Location: San Juan, PR
Bikes: KHS Flite 750 '06
Posts: 132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Over 9,000!
kache_98 is offline   Reply With Quote
Old 08-15-09, 04:13 PM   #17
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Bikes: 2 many
Posts: 15,767
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 130 Post(s)
Quote:
Originally Posted by skiahh View Post
Who's buried in Grant's Tomb?
42 mph down hill.

Quote:
Originally Posted by Siu Blue Wind
What's heavier, a pound of butter or a pound of feathers?
Grant.
2manybikes is offline   Reply With Quote
Old 08-15-09, 06:34 PM   #18
substructure
RustyTainte
 
substructure's Avatar
 
Join Date: Jul 2005
Location: 28012
Bikes: zilch
Posts: 12,343
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What color was the old gray mare?
substructure is offline   Reply With Quote
Old 08-15-09, 07:15 PM   #19
RubenX 
Look! My Spine!
Thread Starter
 
RubenX's Avatar
 
Join Date: Apr 2008
Location: Kissimmee, FL
Bikes:
Posts: 619
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
ok, I measured it with some pretty cool equipment. Taking the voltage from 12v to 13.8v makes the wattage vary from 49.8w to 61.3 and the amperage fluctuates between 4.20a and 4.35a aprox.

My friend suggested modulating (turning them on and off real fast with an electronic circuit) the headlamps to get better battery life... but we have no idea what should be the optimal duty cycle.
RubenX is offline   Reply With Quote
Old 08-15-09, 08:07 PM   #20
sknhgy 
Dirt Bomb
 
sknhgy's Avatar
 
Join Date: Aug 2006
Location: Illinois
Bikes:
Posts: 2,660
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 387 Post(s)
Quote:
Originally Posted by FlatMaster View Post
You would need RMS voltage I think.
I thought 120 was rms volts.

50w= amps x 12v

50/12 = 4.166 amps

That's in the same ballpark as the readings from the equipment.
I think you would need a big battery to supply that much current for any length of time.

Last edited by sknhgy; 08-15-09 at 08:11 PM.
sknhgy is offline   Reply With Quote
Old 08-15-09, 08:18 PM   #21
Nota
Senior Member
 
Nota's Avatar
 
Join Date: Aug 2008
Location: Omnipresent
Bikes: a celeste green one; 5.5 Madone
Posts: 240
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by substructure View Post
What color was the old gray mare?
If a chicken-and-a-half, can lay an egg-and-a-half, in a day-and-a-half, than how long does it take a grasshopper with a wooden leg, to kick all the seeds out of a dill pickle?
Nota is offline   Reply With Quote
Old 08-15-09, 08:26 PM   #22
Wilbur Bud
Senior Member
 
Join Date: Oct 2006
Location: Fishers Indiana
Bikes: Longbikes Slipstream
Posts: 367
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Quote:
Originally Posted by RubenX View Post
My friend suggested modulating (turning them on and off real fast with an electronic circuit) the headlamps to get better battery life... but we have no idea what should be the optimal duty cycle.
Well, unless you're lighting up some poo with that, you're probably out of Foo now, try something like this instead: http://www.bikeforums.net/showthread...t=#post3438001, then read the other 1700 or so posts in total geekiness, and you'll be good to go.
__________________
Longbikes Slipstream
Wilbur Bud is offline   Reply With Quote
Old 08-15-09, 08:43 PM   #23
RubenX 
Look! My Spine!
Thread Starter
 
RubenX's Avatar
 
Join Date: Apr 2008
Location: Kissimmee, FL
Bikes:
Posts: 619
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by Wilbur Bud View Post
Well, unless you're lighting up some poo with that, you're probably out of Foo now, try something like this instead: http://www.bikeforums.net/showthread...t=#post3438001, then read the other 1700 or so posts in total geekiness, and you'll be good to go.
Yes, there will be poo in my path and I'll illuminate it with these lights. It is important that I light up the poo very well. Otherwise I could end up riding over it, causing the poo to splatter all over the bike and the rider (not to mention the nipples of the water bottles). And talking about nipples, I'll also find nipples in my path. I shall illuminate those too, to the best of my abilities. I also wanna be able to blind squirrels with my candlepower, to confuse them and ride over them. Squirrel population shall be controlled.
RubenX is offline   Reply With Quote
Old 08-15-09, 10:02 PM   #24
USAZorro
Seņor Member
 
USAZorro's Avatar
 
Join Date: Oct 2004
Location: Florence, KY
Bikes: 1954 Hetchins M.O., 1959 Viking Severn Valley, 1970 Raleigh Pro, 1972 Fuji "The Finest", 1974 Raleigh Superbe&Comp, 1976 Raleigh Team Pro, 1996 Giant Iguana, 2000 Bob Jackson Arrowhead
Posts: 14,579
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 74 Post(s)
You could monkey around with the wiring and get the bulb to do the equivalent of overclocking.

After some serious work, I think you could even dial it up to 400 watts.
__________________
In search of what to search for.
USAZorro is offline   Reply With Quote
Old 08-15-09, 11:03 PM   #25
RubenX 
Look! My Spine!
Thread Starter
 
RubenX's Avatar
 
Join Date: Apr 2008
Location: Kissimmee, FL
Bikes:
Posts: 619
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by USAZorro View Post
You could monkey around with the wiring and get the bulb to do the equivalent of overclocking.

After some serious work, I think you could even dial it up to 400 watts.
I might need to water cool the casing tho....

and the rig is gonna shoot so many photons that the bike might end up riding backwards...
RubenX is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 10:04 AM.