Incan Newbie setup question

[HarryN]

Hi - I have been an LED light person for several years now, but the incans remain just so amazingly bright, I had to look. (Thanks a lot JimH, you are dragging me down /ubbthreads/images/graemlins/smile.gif)

I am thinking about a homemade with the following setup
- 4 x 123 so nominal 12 V (maybe 9 V with sag)
- 5 x 123 would take it to perhaps 11.4 volts with sag, but as much as 15 volts starting out.
- Carley 813 Halogenlamp T1.5
- nominal 10 V
- 0.6 A
- 13 cp - so nominal 150 Lumen
- small parabolic Al reflector (nominal 0.375 or 0.5 inch
- Mount a Carley T1.5 bi pin socket into the head of the light for quick change bulb.

Maybe put a pair of these in the head of a light for something like 300 lumens.

General Questions
- Good idea / bad idea ?
- How hard is it to align the bulb to the reflector ? I am imagining the reflector bonded to the heat sink / base, along with the bi pin socket. Is it hard to insert / mount these to the right focal point ?
- Is this old stuff around here ? Maybe a thread on this already exists.

I don't want to break new Lumens ground with an initial build, but would like it to be reasonably impressive so that JimH doesn't just laugh at the CPF meeting.

 

[Icebreak]

The two lamps in the head might give you some odd artifacts.

 

[jbev]

You could do something like they have been working on with the LEDs where there are 3 and a tri-cluster of reflectors. But then again what would that get you in an incandescent bulb these days… not much.

 

[HarryN]

Hi - Thanks for the comments. I am not so concerned with the beam artifacts at this point. I am mostly interested in advice on the balance of using this bulb / battery combination - or if there is a better one from another supplier ?

The two beams are mostly for power - 150 vs 300 Luments should be significant I would think.

 

[mossyoak]

but if the bulbs aren't in alinghment then you are wasting the bulbs power aren't you? i suggest that you have one 300 lumen bulb and before you set everything in stone (or for that matter epoxy)you should move it around to see how it should be set to get the perfect beam

 

[HarryN]

So, coming back to the original point - does anyone have any experience with the repeatability of using a Carley bi pin socket and the bi pin bulbs with the Carley reflectors ? Does this require fooling around with the bulb and reflector each time, or will "one set, stays set" apply.

 

[HarryN]

So, coming back to the original point - does anyone have any experience with the repeatability of using a Carley bi pin socket and the bi pin bulbs with the Carley reflectors ? Does this require fooling around with the bulb and reflector each time, or will "once set, stays set" apply.