Holy moley, watch out for the deer. The wiring looks a lot better. Do you have many unlighted streets you travel on?

Most of the streets I ride don't have lights, I'm kind of out in the country a bit. There are some, but not many until you get into town.

Yes, the 50W is almost too bright. I will try another bulb and post results. Still, I ran it for over 30 minutes last night, and light output didn't drop noticeably. I think with a smaller bulb it will serve me just fine.

I am using a very similar setup, and using the aluminum frame for a ground works fine--just make sure you have a good connection to bare metal. I'm now using 2 grounds from the battery, in case one breaks (had that happen, lost all my lights till I figured it out).

Here is an older post of my system at that time (http://www.bikeforums.net/showpost.p...postcount=1739 ). I still use a similar system: headlight is a MR-16 3 LED bulb, LED beehive rear lights, and 5 Ahr SLA battery. Not the fanciest system, but it works day in, day out for years.

That's awesome, I wasn't too sure about using AL as a ground, but heck, I might try it if I redo my wiring. I switched to the 20W bulb, and it's dimmer when seeing it from the front and sides, but it doesn't really look much dimmer when you're on the bike, so I may stick with it.

How bright is the LED bulb compared to the 20W halogen? I might go that route too, it seems to be a good option if it puts out enough light.

It is definitely dimmer than the halogen, but since it only draws about 3 watts, you can 2+ hours run-time. It is fine for a to-be-seen light and for the few dark sections of my evening commute. Maybe I should make some beam shots--but it might be next week before I could take some photos (anybody have any suggestions for camera settings?).

2 Cree XPG R5 bin LED's will get you very close to a 20w halogen, if it isn't brighter.

Blue Light Special
 

Modified some lights for my bike using some "super bright" 3V 20mA blue LEDs.

Added four LEDs to the headlight. You can see two of them in the pic:
http://www.tjwoodworking.com/pug54.jpg
Should get about 100 hours from the C cells in the headlight. Added a single pole 3-way switch: Off, LED, or incandescent.

With tire touching a piece of cardboard, incandescent mode:
http://www.tjwoodworking.com/pug66.jpg
You can see the beam is focused.

Blue LED mode:
http://www.tjwoodworking.com/pug65.jpg
Bright but diffuse.

Tail light: added SPST switch & a little perfboard with one LED and 2 N cells. Thats all thatll fit. Expecting 50 hours from the N cells.
http://www.tjwoodworking.com/pug53.jpg
Light is on, mounted with a rubber insulated conduit hanger & a shiny mending plate that I twisted in a vise.

http://www.tjwoodworking.com/pug52.jpg
Brightness compared to the seatpost LED flasher. The Woho bag is transparent & reflectorized, and the blue reflector is a Stimsonite highway reflector, very bright.

Night pic: fast flasher in the Woho, slow flasher on the seat post, steady blue LED:
http://www.tjwoodworking.com/pug61.jpg

My thinking here is that distracted drivers are a hazzard, but, what if I'm the distraction? And what's more distracting when you're driving than flashing red and blue lights?

I would suggest you check your local DOT regulations on the use of blue lights on private vehicles; most states do not allow their use except for very specific reasons (i.e volunteer fire dept, etc). I don't think you would be confused with a real police vehicle, but why give them something to hassle you or give you a ticket about?

Blue is strictly reserved for police use everywhere I have ever lived, and you'd get busted pretty quickly. Around here use of blue is seen as tantamount to impersonating a police vehicle. Which is not absurd as it sounds, considering many localities have bicycle mounted officers.

In Pennsylvania a steady blue light is legal on a vehicle, a flashing blue light is legal only on volunteer firefighters/ dog handlers/ emergency vehicles, etc.

I see that a blue light is legal on an authorized vehicle: "(3) Blue lights. A vehicle may display blue lights as provided for by 75 Pa.C.S. § 4572(a) (relating to visual signals on authorized vehicles). Vehicles described in 75 Pa.C.S. § 4572(a) may be equipped with a light-bar assembly using only blue lights." but I don't see where just any vehicle can display a blue light, flashing or not.

Just a side note--I'm not trying to give you grief for the hell of it, just don't want to see a fellow cyclist hassled by the local police.

...found this...

§ 4310. Motorcycle lighting.
Auxiliary lighting may be added to a motorcycle to protect the driver, including blue dot illumination, standard bulb running lights and light-emitting diode (LED) pods and strips.
(June 29, 2006, P.L.205, No.50, eff. 60 days)

... I'll ask the local LEO for his opinion.

I've been using some mr16 fog lights to mount my LED's this year. Just hit a pothole last night and the plastic mount cracked off at the base. Bummer, will have to go buy something to see me through the rest of the season.

I bought a 1973 Schwinn Continental a few days ago and since it came with a dynamo-powered head lamp and tail light, I decided to retrofit them with LEDs and hook them up to a battery pack.

The most elegant solution for the lights is to use LEDs that have an E10 (miniature screw) base like the TLE-1S, which is a replacement for a flashlight.

http://www.batteryjunction.com/tle-1s.html

Now the questions: Is 50 lumens going to be enough for me? Are there other places to look for similar (stronger) LEDs that have a base like that? Should I just abandon this approach altogether and use a different type of LED?

A new light and sound system for my recumbent
 

Hi all,
it's been two years since I made my last multi-function compact lighting system for my old bike. It's been working flawlessly for nearly 25,000 miles so I decided to make something similar for my new recumbent bike, only more powerful, heavier and even more complicated. By this winter's end, it was finished.
It's designed completely by hand except control panels graphics.

Including all the gadgets, the whole system comprises:
- 52 transistors (including 14 FET's)
- 21 IC's (double op-amps, timers, pulse generators, triggers, references, DC-DC convertors)
- 175 diodes (including 97 LED's where a bargraph counts as one).

It features some new functions:
- automatic on when the bike gets moving and off after standing still for 2 minutes
- speed-dependent power regulation for the headligt at night
- automatic daylight detection
- high beam with power adjustment
- more powerful stereo amplifier with auto on-off function
- battery voltage meter
- optional beacon
- a real bell
and more.

Some functions are quite complex, like the high beam control. It turns on by the push of a button. But it holds on only if the following conditions are fulfilled: it's dark, the speed is over 9 mph, and the battery voltage is over 12 V. Otherwise, it turns off itself.
The speed detection is done by measuring the hub generator frequency and it's used also for controlling the headlight power at night, and for switching between two different charging modes.
At low speed, a voltage doubler comes in action. In this mode, the hub generator is capable of powering most of the illumination from 6 mph without any battery drain, up to 400 mA. From 9 mph on, it's more effective to charge directly since the generator gives up to 550 mA at 14 V after rectificaton. When the battery voltage exceeds approx. 14.3 V, the charging is interrupted until it drops back to 13.8 V. With this type of charging, the battery in the old system works still fine after two years of daily use.

Here's the photos:
http://generator.rajce.idnes.cz/It_s...he_final_look/

There's some detailed information underneath each picture an you can also zoom in.

If you are curious about some inner secrets, here's some pictures from the making of it.
http://generator.rajce.idnes.cz/Par_..._making_of_it/

Unfortunately, the information in this section is only in Czech but there's nothing important to say.

A sneak preview:
http://img5.rajce.idnes.cz/d0510/3/3...s/100_1281.JPG

For a taillihgt, it would be pretty much enough if it was a RED LED. A white one placed in that red casing won't look any good. For a headlamp, no way. In that kind of a lamp, any E10 halogen will do much better. And, 1W Luxeon is quite dated. A different kind of LED with a different kind of optics is a way to go if you want more light, but this would spoil the idea of using that old headlamp.

I've been running my halogen light setup for two years now and my 7.2 AH sla battery just died. I'm thinking about going to NIMH batteries to reduce weight. I spotted two setups that are interesting:

http://www.batteryspace.com/nimhbatt...ltechplug.aspx and

http://www.batteryspace.com/waterbot...bikelight.aspx . Has anyone used either of these? Any feedback would be appreciated.

Walt

Halogen Lamp Assembly / MR-11
 

Allelectronics has a "HALOGEN LAMP ASSEMBLY W/ AUTO LIGHTER CORD" for $5.65. http://www.allelectronics.com/make-a...ER-CORD/1.html The catalog copy says:
It somehow seems like cheating on this thread to use something that was "originally part of a bicycle headlight assembly" but I suppose one can break out the soldering iron to replace the lighter plug, etc.

http://www.allelectronics.com/mas_as...39,hlp_251.jpg
http://www.allelectronics.com/mas_as...,hlp_251_2.jpg

Oh that's legit! I'm going to buy one right now! Thanks.

I'm getting ready to build my setup, and I love some of the ideas I'm getting here... I'm only up to around page 40 of reading, but then this came up today in my RSS and I had to share: http://www.instructables.com/id/Elec...Mountain-Bike/

Well, after intermittent reading over the last week or so I have finally read this entire monster thread, and am now working to amass the parts required to make a proper light setup for my bike. Right now I have a 10w TrailTech HID 12degree flood headlight, two cateye tl-ld1000 tail lights (one on rack, the other on seatpost) and a smaller red "tail light" (not sure it's big enough to deserve the classification) I mount on my belt, all steady, and a small cateye LED light mounted on my helmet, which I call my "dashboard light". I have a 4500mAh NiMH from batteryspace, which should manage for a while, although it's old enough that I'm monitoring performance now that I am back to riding (I tend to ride to get from A to B, and haven't needed to get around as much for a while.)

I have gotten hold of a pair of the Optronics lights (QH87CC metal housing), and am planning to set one of those up as a high beam. I also am looking at getting a tail/brake light from Super Bright LEDs, and also setting up some turn signals (their sequential arrows signals look quite attractive, as centerline reference would no longer matter. They are kind of expensive, though. I'll make sure to report back if I use them.) I have some other ideas that I will share when they are complete, but which I think thoroughly qualify for the "Total Geekiness" thread title.

It'll probably take me a month at least to really start putting things into action, but if I'm not checking in and you want to know my progress go ahead and PM me.

Thanks for the wealth of knowledge accumulated in this thread - I doubt I would have gotten the Optronics lights or some of the other lights without it.

Tor

http://www.youtube.com/watch?v=xyUZw...os=5vzLXiRZfXk
LOW DOUGH bike light

love the way all u throw money at lighting, whenn all u need is 2 clamps and a flashlight of some sort.
never knew $3.00 was too much to spend
http://www.dealextreme.com/products.dx/category.823

All you need to do is commute nightly in an urban environment to realze that you are gonna die unless you put some more serius wattage on your bike.

$3.00 lights are great and have many uses and you sure get alot more than you used to. But as a primary bike light for a commuter they are inadequate

penny wise and pound foolish. thanks for the link it's been a while since I browsed their accesories. I do run one of their cheap blinkies as a backup.

Resurrecting this thread, I finally got around to upgrading the lighting rig to LED bulbs, and man! I'm loving it. I got some 4W MR16 bulbs from Deal Extreme, and I've got 2 of them mounted now. They are bright enough to where they will temporarily blind you if they're pointed right at your eyes at night. However, they give excellent ground coverage, and were only $10 for each bulb.

Here's a closeup of the lights themselves. I had to modify the housings to accept the longer LED bulbs.

http://jeffhendricks.net/images/bikes/lights.jpg

Wow, those DealExtreme lights sure do sound like a great value. Would you be able to say how their brightness compares with, say, a 20W halogen MR16? Also, how's the beam width?

I can't vouch for the flashlights, but I have a 20W MR16 halogen I can put next to these... if you like, give me a day or so and I'll A/B them for the forum's posterity. :) The beam width is close to the standard flood pattern (60 degrees, I think? Will have to check)

http://links.bikehugger.com/2010/09/...le-safari.html
try this

Okay, I finally got around to trying out the bulbs, and man, I had forgotten what a difference it was...

Here they are (I think the attachments will show up in this order:) 50W halogen, 20W halogen, two 4W LEDs, and one 4W LED. It looks like two LED bulbs easily match the output of a 50W halogen, at 1/6 the power... pretty amazing.

Also, the 20W halogen was marked as 36 degrees, and it looks like the rest are close to that... maaaaybe 45 at the most. 36 degrees is a standard medium flood pattern.

as long as u can see in front of u.....thats what matters