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Thread: The 30" Night Hawk

  1. #31
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    Default Re: The 30" Night Hawk

    That's a cool 45-75 million CP. The Francis 560mm (22") searchlight with 2500W gets 141 million CP. So that is quite belivable for your 30".

  2. #32
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    Party Re: The 30" Night Hawk

    I will be traveling to Las Vegas soon, to pick-up the 36" Gorilla searchlight, parent of the 30 Inch Night Hawk. I will compare beam results, but I can already see that I need to smooth out the Night Hawk reflecting surface. The small ridges and blemishes, I allowed, are causing the beam to widen too fast. It still lights up the clouds a mile and a half up, but not like I wanted.

    I thought I could make do with a more accurate parabolic shape, and not worry as much about the surface quality...Wrong! The orange peel effect is worse than I should have accepted. So I will make a duplicate reflector and concentrate on getting rid of the orange peel surface. The Gorilla searchlight makes a better beam; of course because it is bigger, but because it has a fairly smooth surface, even though it's parabolic shape has a few minor incorrect areas. This is part of the fun of all this, finding issues, and fixing them. I'm excited to see how the two lights compare, and then make improvements!

    More to come!

  3. #33
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    Default Re: The 30" Night Hawk

    I compared the Night Hawk and Gorilla Reflectors, and realized the Gorilla has a much smoother surface, giving it a much better beam. I will focus spending a lot of time finishing any future surfaces to a mirror like smoothness.

    While building the Night Hawk, I moved quickly, thinking I could get away with the orange peel look. I will either re-finish the Night Hawk, or go ahead and make another one, and concentrate on mirror like smoothness. I may bring the Night Hawk with a 100 watt 10mm arc HID installed to compare beam quality, to the next Seattle CPF Get Together.

  4. #34
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    Default Re: The 30" Night Hawk

    Quote Originally Posted by LightSward View Post
    [INDENT] I compared the Night Hawk and Gorilla Reflectors, and realized the Gorilla has a much smoother surface, giving it a much better beam. I will focus spending a lot of time finishing any future surfaces to a mirror like smoothness.
    I have that cheapo 8" reflector HID, I just had to own it even though BVH said it was crap due to the lousy hotspot shape, it is like a mess of corona and no real hotspot, hence it is like a tight corona hotspot like a 40mm reflectored XP-G in throw but no real bright hotspot in the middle so the PBCP is not going to be high. The shape of the parabolic is ok, hence the tight corona, but there are like minor dimples spread all over the reflector surface, but it is very mirror smooth so the dimples are not like Orange Peel or stippled, so it gives a wierd hotspot. Luckily i got it cheap, 55W for 52 bucks shipped, not too bad....part of the collection I guess.

  5. #35
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    Party Re: The 30" Night Hawk

    It is interesting how reflectors are. The Night Hawk and Gorilla beams, at first looked somewhat similar. They both light-up the clouds, a mile and a half or so up, quite brightly, but the Gorilla hot spot is much tighter, brighter and better defined, with a thinner, farther traveling beam.

    I was trying to produce the Night Hawk reflector in a quick and efficient manner, sort of a pre-production run, but, among other things, I was distracted by a phone call during part of the finishing process, and didn't pay as close attention as I should have.

    I am still impressed with the initial results of the Night Hawk so far, but I will work on the Beta model over a longer time period, and work out the little bugs that blemished the results. I figure, if I spend quality time and precision, the results should be at least, if not better than the Gorilla in it's present condition. (...of course, if I made a better surface on a beta- Gorilla...watch out!)

    Over-all, I like the design of the Night Hawk type lights, and the fact that the reflectors are strong enough to act as the frame and case for the light. Next few models, I hope to cast the reflector and essential components all into one "Uni-body' with plenty of access for service. Low weight, relatively compact size, and cost.

    Fun, Fun, Fun!!!

    I will fire up the Gorilla, next few nights...but I have to be careful, as it does seem to instantly draw strangers into our block area. Sometimes I wait until 2 0r 3 am, when no one is out and about, and no one is thinking "Store Sale, or "Party", just a hallucination, typical of that time of morning...Heh heh heeeh...lol
    Last edited by LightSward; 08-10-2011 at 12:50 AM. Reason: thoughts

  6. #36
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    Default Re: The 30" Night Hawk

    Attention is good, that means your light is good!

    I am still searching for a smaller HMI/MSR whatever MH spot. 10 deg beam is still alright if its 575 - 1200W power for those moving head effects spot, good for short range few hundred metres fun. I seen a 575W mini follow spot stage light which is 55cm long x 15cm x 20cm, but i think the beam divergence is 15 deg. Not pretty. The good thing is that it is cheap, 220 bucks shipped with EMS.

    I am actually quite ok with 10 deg. My chinese triple XM-L light has 9.5 deg so i am aware of the technical performance. Probably about 500k CP for the 575W at 10 deg.
    Last edited by 2100; 08-10-2011 at 02:10 AM.

  7. #37

    Default Re: The 30" Night Hawk

    Awesome stuff. These parabolic spotlights have me doing alot of reading. I started gathering parts for a build of my own. I have a 48" plastic satellite dish that is a lil over 5" deep. As for the light I was thinking an 100w automotive xenon projector with the boundries and cutoff removed would be perfect(although it is slightly elliptical) and throw some pretty even light. I dunno how it will work as it throws light relatively sharp and focusing the beam may be dificult. The chrome I did some searching and found someone did all the work for me. spaz tix is the name, dunno how durible it is yet. This is just an idea at this point, I need all the input I can get.

    Last edited by jaws; 08-10-2011 at 09:29 AM.

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    Default Re: The 30" Night Hawk

    Actually with that big a dish at 5 feet, getting an micro OP surface may be desirable. But the OP must be consistent.

  9. #39
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    Default Re: The 30" Night Hawk

    Quote Originally Posted by 2100 View Post
    Attention is good, that means your light is good!

    I am still searching for a smaller HMI/MSR whatever MH spot. 10 deg beam is still alright if its 575 - 1200W power for those moving head effects spot, good for short range few hundred metres fun. I seen a 575W mini follow spot stage light which is 55cm long x 15cm x 20cm, but i think the beam divergence is 15 deg. Not pretty. The good thing is that it is cheap, 220 bucks shipped with EMS.


    I am actually quite ok with 10 deg. My chinese triple XM-L light has 9.5 deg so i am aware of the technical performance. Probably about 500k CP for the 575W at 10 deg.

    You could buy the light and maybe cannibalize the parts.

  10. #40
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    Default Re: The 30" Night Hawk

    Quote Originally Posted by jaws View Post
    Awesome stuff. These parabolic spotlights have me doing alot of reading. I started gathering parts for a build of my own. I have a 48" plastic satellite dish that is a lil over 5" deep. As for the light I was thinking an 100w automotive xenon projector with the boundries and cutoff removed would be perfect(although it is slightly elliptical) and throw some pretty even light. I dunno how it will work as it throws light relatively sharp and focusing the beam may be dificult. The chrome I did some searching and found someone did all the work for me. spaz tix is the name, dunno how durible it is yet. This is just an idea at this point, I need all the input I can get.

    You could make / improvise a split reflector....a small bowl shaped reflector to focus the light opposite the main reflector, back through the light source and onto the main reflector...a common design.

    Nice chrome choice...!
    Last edited by LightSward; 08-11-2011 at 01:10 AM. Reason: spelling

  11. #41
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    Party Re: The 30" Night Hawk

    I just temporarily installed the Lithonia 100 watt HID from Home Depot, into the Night Hawk. What an incredible light, how much just a 100 watt HID regular loading door light produces, when used this way. I'll post some photos soon.

    I will bring this light, along with the 36 inch Gorilla, to this Fall's: CPF Seattle Get Together

    FALL Get Together using Spring link:

    http://www.candlepowerforums.com/vb/...T-in-May/page3

    See you there.
    Last edited by LightSward; 08-19-2011 at 11:42 PM. Reason: spelling

  12. #42
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    Default Re: The 30" Night Hawk

    Here is a beam shot of the NightHawk with just a 100 watt HID from Home Depot! Nice beam.




    The NightHawk lights the Night Sky

    Here I have temporarily installed a regular metal halide 100 watt light from home depot. Nice well focused beam!

  13. #43
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    Party Re: The 30" Night Hawk

    Quote Originally Posted by jaws View Post
    Awesome stuff. These parabolic spotlights have me doing alot of reading. I started gathering parts for a build of my own. I have a 48" plastic satellite dish that is a lil over 5" deep. As for the light I was thinking an 100w automotive xenon projector with the boundries and cutoff removed would be perfect(although it is slightly elliptical) and throw some pretty even light. I dunno how it will work as it throws light relatively sharp and focusing the beam may be dificult. The chrome I did some searching and found someone did all the work for me. spaz tix is the name, dunno how durible it is yet. This is just an idea at this point, I need all the input I can get.


    I actually thought of using spoons as reflectors myself.

    How did your project turn out?

    I just purchased a fiberglass paint that allows copper electroplating and then chrome.

  14. #44
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    Party Re: The 30" Night Hawk

    I've been using templates developed from this light to make the pro to-type production light called the: 26" LightSport
    I'm developing mirroring methods using the NightHawk.

    Some Photos:

    Reduced and polished concrete mold, made from the 30 inch "NightHawk".


    Waxed and polished concrete mold ready for fiber-glassing




    The removal of the product, was much easier by using melted polished candle wax on mold.


    I'm ready to apply the 'acid copper' onto the painted copper layer.

    Acid Copper layers are now added to make the Copy Chrome like a 'Mirror'.

    I hope to use this on all the searchlight models I have worked on...We'll see!?!!!

  15. #45

    Default Re: The 30" Night Hawk

    I can't wait to see what you end up with, you seem to improve your reflectors all the time. I can see why you used the chrome tape, but I think getting away from that will help a lot.

  16. #46
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    Party Re: The 30" Night Hawk

    Quote Originally Posted by electromage View Post
    I can't wait to see what you end up with, you seem to improve your reflectors all the time. I can see why you used the chrome tape, but I think getting away from that will help a lot.
    Thanks for the kind words. Reflector improvements quite often on my mind. The quality of the reflection, using the electroplating, should improve, eliminating much of the orange peel look along with better surface of fiberglass. I'm getting pretty good electroplating objects under 11 inches diameter, but may purchase larger tanks to get the quality needed on the Night Hawk, I've been using the 'puddle' method, and the quality is harder to control, but much less costs and shop space taken.

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    Default Re: The 30" Night Hawk

    Quote Originally Posted by LightSward View Post
    ...has spread to around 10 feet in diameter for the bright spot and 12 feet with corona...
    So the light seems bigger with Corona!
    I like big bulbs and I can not lie, you other brothers can't deny!

  18. #48

    Default Re: The 30" Night Hawk

    Have you looked at this stuff? http://www.anchoroptics.com/catalog/product.cfm?id=568 I don't know how it would compare to the tape, but it might be something to try out on the larger reflectors until you can get them electroplated.

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    Default Re: The 30" Night Hawk

    Optiforms has a 24.82"CA 6.87"FL Electroformed Reflector for an incredible price. That's what I'd use for this sort of project. I might pick one up for some fun at some point down the road.
    I like big bulbs and I can not lie, you other brothers can't deny!

  20. #50

    Default Re: The 30" Night Hawk

    That takes some of the fun out of it though, doesn't it? He's put quite a lot in to designing and building his own reflectors. How much is "an incredible price"? I don't see any prices listed on their site.
    Quote Originally Posted by get-lit View Post
    Optiforms has a 24.82"CA 6.87"FL Electroformed Reflector for an incredible price. That's what I'd use for this sort of project. I might pick one up for some fun at some point down the road.
    Last edited by electromage; 04-05-2012 at 04:14 PM.

  21. #51
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    Party Re: The 30" Night Hawk

    Quote Originally Posted by electromage View Post
    Have you looked at this stuff? http://www.anchoroptics.com/catalog/product.cfm?id=568 I don't know how it would compare to the tape, but it might be something to try out on the larger reflectors until you can get them electroplated.
    I will definitely check this out! Looks good.

  22. #52
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    Party Re: The 30" Night Hawk

    Optiforms has a 24.82"CA 6.87"FL Electroformed Reflector for an incredible price. That's what I'd use for this sort of project. I might pick one up for some fun at some point down the road.

    Quote Originally Posted by electromage View Post
    That takes some of the fun out of it though, doesn't it? He's put quite a lot in to designing and building his own reflectors. How much is "an incredible price"? I don't see any prices listed on their site.
    I like making my own reflectors, but still may purchase one of these.

  23. #53
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    Default Re: The 30" Night Hawk

    Quote Originally Posted by get-lit View Post
    So the light seems bigger with Corona!
    Corona sounds good.

    I'm amazed how effective the Night Hawk design works at reflecting light.
    Last edited by LightSward; 04-05-2012 at 10:38 PM. Reason: grammer

  24. #54
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    Party Re: The 30" Night Hawk

    The completely new, duplicate, and without many of the blemishes, and flaws of the original; "NightHawk", is about to light the night!

    I've finished applying an Edmund Scientific reflecting mirror as recommended by electromage , applied using carpet tape. Test, including laser trace and small, bright, point and mask LED's, show the New Improved "30 inch NightHawk" should kick A-zz. I can't wait to get this thing lamped and yoked for what should look and act like a big, heavy searchlight, yet will be light-weight and easy to transport.

    Reflector still has some improvements since I used the original NightHawk with some 'smoothing' as the mold...yet I'm still impressed. This Searchlight so far is easy to maneuver and lightweight enough to carry with backpack attachment or handle and transports easily in compact car back seat, passenger seat, hatchback or trunk.
    Last edited by LightSward; 04-27-2012 at 12:57 AM. Reason: grammer

  25. #55
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    Default Re: The 30" Night Hawk

    Recently built the light bulb socket from an electrician's electrical grounding components and a 'cutting' board as co-recommended by a Home Depot employee. Looks pretty nice. photos soon.

    I should be able to mount the 'Delta-focusing Plate' with the top part of the 'split reflector', so that the bulb and top reflector focus together, making the main reflector focus much easier. This had been a problem in the past...i.e., focus the bulb to the main reflector and then the back reflector would be out of focus...nightmare to work with before. I'm getting better at this.

    To the Seattle Area get together, this may be the light, (NightHawk), I bring and showcase this year. Hopefully I can bring the main unit into the 'barn' before night fall so people can get a close up look.
    Last edited by LightSward; 04-30-2012 at 12:30 AM. Reason: spelling

  26. #56
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    Default Re: The 30" Night Hawk

    Here are some photos of the most recent development of the Experimental series of Searchlights which include the 30inch Night-Hawk.


    Start of 30 inch reflector mirror covering

    Start of Edmund optical mirror application. The double sided adhesive worked well in some places but others it slightly bubbled.



    30 inch experimental reflector
    Reflector showing distorted reflection of surroundings.


    Jenbo 1,200 watt HMI and split reflector and socket homemade

    You can see the mounting hardware used to hold bulb on a shaped cutting board as the socket body. The 'back-reflector' is seen above bulb and supplied light back to the main reflector that otherwise would be wasted.



    30 inch reflector
    The bulb cooling, rain protector is seen above the main light output globe.




    One candle 30 inch reflector from 25 feet

    Candle image from down the hall.




    One lighter from 120 feet away 30 inch reflector
    I held a lighter in one hand at focal point and balanced camera in other to photograph image on garage door to right from a hundred twenty feet away.

    I hope, with all the little issues I had with the reflector, the Experimental 30 inch Night-Hawk will make a half way decent beam!
    Last edited by LightSward; 05-21-2012 at 11:25 PM. Reason: photo editing

  27. #57
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    Default Re: The 30" Night Hawk

    Great work. I suggest using 3 slightly smaller bolts than the two you have for mounting and adjusting the back/retro reflector. That will reinforce it against forces in all direction with less noticeable obstruction from the bolts. It will also allow you to adjust all three XYZ dimensions.
    I like big bulbs and I can not lie, you other brothers can't deny!

  28. #58
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    Party Re: The 30" Night Hawk

    Quote Originally Posted by get-lit View Post
    Great work. I suggest using 3 slightly smaller bolts than the two you have for mounting and adjusting the back/retro reflector. That will reinforce it against forces in all direction with less noticeable obstruction from the bolts. It will also allow you to adjust all three XYZ dimensions.
    Thank you for the kind words.

    I have to admit, I was going to use three smaller bolts, but my budget, and optional hardware for this project is running out, so I went with what I already had on hand. The good news, I was able to make 'slots' on the two adjustable plates that hold the whole assembly; so 'some' X,Y,Z -3 axis control is available. I also decided to line up the bolts with the hardware inside the bulb. I was surprised at how the bulb interior is not centered to the outer part of the bulb, so I added a slight 'twist' to the assembly to minimize all the shadows into just the two standard ones on opposite sides of the bulb. I have carefully measured the focal point using a bright 'point' LED lamp and am making sure the first start position of the arc is exactly where this is, (or should be), so I hopefully won't have to do much focusing.

    Hope this works. Next one will be the 'delta' design as you mentioned.

    I already 'bumped' the side of the assembly and wished that I had secured it with three bolts. I may use bailing wire for a temp fix...LOL. As you can see I have already resorted to some 'jury rigging' of things; out of impatience and a desire to get this searchlight ready for our CPF Seattle Area Get-together this coming Saturday, 26th day of May, 2012.

    Hopefully I won't be too embarrassed. If the light beam is roughly the same or better than the 36 inch Gorilla, I will have accomplished my goal for this particular project of making a much lighter weight, and smaller, easier to transport searchlight. The Gorilla on the outside actually measures close to 40 inches, the 36 inches being the actual reflector surface size. The Gorilla can be a bit of a hassle, sometimes, to get into my care...still not too bad. The 30 inch Night-Hawk is the outside dimension of the reflector and the actual reflector with integrated frame is 29 inches. Overall, it is much easier to transport just being smaller and lighter-weight .
    Last edited by LightSward; 05-22-2012 at 09:40 PM. Reason: added thought

  29. #59
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    Default Re: The 30" Night Hawk

    Glad the Forum is back up and running.

    The new 30 inch Nighthawk is up and shining! Still need to work on focus, orange peel reflector issues and other, but decent beam. Almost as good as the Gorilla beam, much easier to transport. The split beam reflector next to the bulb, has slightly tarnished, so doesn't reflect as much light through the arc chamber to the main reflector as when new. Still, it lit up clouds a mile and a half up. Here are some photos I took last night while adjusting the focus.


    Nighthawk ready for final assembly.



    Nighthawk ready for 'Ignition".



    Nighthawk Beam is fatter than expected

    Nighthawk Beam is bright, but a little fatter than expected. The 10 mm arc may be too large for any reflector smaller than 30 inches, if it is to make a narrow beam. I still can adjust the focus, though mechanism not easy to work with when lamp is on.



    Nighthawk lights up the clouds a mile and a half up

    Nighthawk lights up the clouds a mile and a half up, really interesting to watch the clouds move in and out of the beam.



    Nighthawk lights clouds a mile and half up

    Nighthawk lights clouds a mile and half up. Beam is a little fatter than I was hoping for.


    Beam slices night sky

    Beam slices night sky, makes decent beam.

    See everyone at the Seattle area CPF Get Together.

    http://www.candlepowerforums.com/vb/...12-Spring-GTG-
    Last edited by LightSward; 05-25-2012 at 11:57 AM. Reason: photos

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    Default Re: The 30" Night Hawk

    if your not wearing a #12 welding screen than it ain't bright enough! "Hand-Sun H.I.D." 55w & 75w(for sale), Rocky 3w LED, Stanley 109 35w mod'd, Maxa-Beam Gen II, 55w hid/100w incan Vector Twin, 400w MH long arc, 100w MH mid arc. Amondotech n30.

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