grins projector, recoil and test light builds

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grin
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86mm kaidomain reflectors for xhp35hi


MRsDNF
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Nice job on the cut outs grin.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

gravelmonkey
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That reflector array looks amazing!

I’m inspired by this thread! I’m looking at a big, vintage enlarging lens on eBay right now, might be rubbish for making a thrower, but I want to have a go anyway!

grin
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Thanks, it is good to see someone get something from my ramblings. I have found an article on light collection and collimation that can explain better than I. https://www.newport.com/t/light-collection-and-systems-throughput

The reflectors are a follow on from my OL competition light. I want to get the process of cutting and finishing the reflectors right before I start the big build. So for this one I made a simple jig to put in the metal cutoff bandsaw.

grin
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MRsDNF I was cleaning up at work and they told me to throw a pallet of these in the scrap bin I think they are cutters from a horizontal mill. They are brand new except for the bottom left which I got to make a flail or mace. Anyway before I set my lathe up to try it would they be any good to dress the reflectors? The bandsaw cut isnt perfectly straight.

MRsDNF
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I’d try and use a fine file or emery on a flat surface. I’ve seen some use an emery wheel on a grinder but dont have one of those. One day. I thought your cuts looked really neat. A lot better than I could have achieved.
I did mill some small reflectors like you have cut and holding them in a vice, even gently they tend to warp.
Saying all that your doing a terrific job. Beer

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

grin
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The quad has been put on hold since I put the leds and boards on the gas burner and walked outside the boards and leds got burnt Facepalm
So at the request of another BLFer I have been adapting the 150mm lens I made before and wasnt going to work on that light to a GT90.


pinkpanda3310
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Bummer. I was looking forward to that quad.

That pic of the GT’s is a little deceptive. Never owned a GT but I know what 150mm stormwater pipe looks like. That light is not small Evil

  

grin
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Quad wont be far off.
The GT with 150mm lens is huge and heavy but surprisingly well balanced. Outside is finished except for polish. It will be a 3 element lens train and I still have one internal carrier to build. I will post internals dimensions and lens when it is focused properly.


G0OSE
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O….M…..G……
I just love coming in here every week to see what craziness you are cooking up! You never fail to please Wink No wonder your username is grin!
Keep it up man! I’m fairly sure soon you’ll be responsible for attracting aliens with these crazy beams Sick

Agro
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G0OSE wrote:
O….M…..G……
I just love coming in here every week to see what craziness you are cooking up! You never fail to please Wink No wonder your username is grin!
Keep it up man! I’m fairly sure soon you’ll be responsible for attracting aliens with these crazy beams Sick

I second this. I really love what you’re doing.
MRsDNF
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Big Smile

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

CNCman
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Agro wrote:
G0OSE wrote:
O….M…..G……
I just love coming in here every week to see what craziness you are cooking up! You never fail to please Wink No wonder your username is grin!
Keep it up man! I’m fairly sure soon you’ll be responsible for attracting aliens with these crazy beams Sick

I second this. I really love what you’re doing.

.
And I third this Thumbs Up
Great Job Grin !!
A barrel full of chips, I bet. Wink
grin
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likevvii
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Nice!

What are the two lens you used for this?
What was the estimated spacing for both lens in reference to the LED?

grin
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There are 3 elements 40mmx40mm FL, 75mmx150mm FL, 150mmx300mm FL. I used 3 elements to get the focal length short enough to focus it properly. The 40mm is as close as possible to the led to collect the light. The 75mm takes this light and shapes it for the 150mm to throw down the paddock. I have made the intermediate lens adjustable to allow for focus without changing the outside dimensions. Some photos wil explain better








MRsDNF
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Amazing work there Grin. Well done.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

kennybobby
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That’s a great design and build, it is an amazing light beam.

How did you hold the tapered cone in the lathe to cut both inner and outer fine threads at the small end? Plus all the collars and thin lock rings with fine threads? You are a master at precision machine work.

Now i used to think that i was cool,
drivin' around on fossil fuel,
until i saw what i was doin',
was drivin' down the road to ruin. --JT

raccoon city
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grin wrote:

One reason I'm not a modder:
I don't like to get my hands dirty.  :P

grin
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Thanks, there was some trial and error to get it right and it will look better anodized.

Kennybobby many many times I have stuffed parts by not getting the sequence right you end up not having any way of holding it. So to cut the internals of the cone I left a ridge at the base for the chuck to grip.

Raccon city even when I get them clean they are still covered in cuts, scratches and scars. After leaving construction 13years ago and not swinging a hammer every day I still have callouses on my hands.

I got one interesting beam pattern when I was working out the focus. What i think was happening is the lens closest to the led was in focus and creating two beams.


G0OSE
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Cool photo! Thumbs Up

grin
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K75 over 2km to the train.


MRsDNF
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Your going to get in trouble. Silly

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

grin
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MRsDNF wrote:
Your going to get in trouble. Silly

It has started to draw attention but I think it is more curiosity than anything. On the weekend at home I mounted the searchlight mirror on a frame and tested a 100w HID and a CMT-2850. The police drove past but didnt stop and you can see the beams 1km awayand that is in town. According to Endermans calculator CMT-2850 should still give me 19km.



CMT beam shots w30 on the right

The HID creates lots of front spill so I knocked up a quick hemispherical reflector to block it and redirect the light back to the bulb.

Yes it works

w30 is on the right again.

This makes me think about a 4kw short arc or even a TIG welder with high frequency start to run as a light engine. But that would have to run with argon and the actual light could be dangerous ray burns and arc eye.

MRsDNF
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I think its about time you changed your user name. Something along the lines, gone mad grinning. You have certainly never fail to surprise and put a grin on my dial. Love your work.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

G0OSE
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Now that’s enough of that……….. you know you’re going to ignite the atmosphere soon!
Next mission the space station……….. Thumbs Up Big Smile 408km Silly

grin
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I just hope the aliens dont start shooting back

CNCman
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MRsDNF wrote:
I think its about time you changed your user name. Something along the lines, gone mad grinning. You have certainly never fail to surprise and put a grin on my dial. Love your work.

.
Good idea, maybe we could have a name suggestion thread for “ grinn “.
I do believe we are in danger of being located by a possible unfriendly Alien World a few light yrs away from his lights. Or maybe knocking down a few satellites soon. Either way , we are enjoying your pics grinn and grinning too. Beer
MRsDNF
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Thumbs Up

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

grin
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