Double stacked vertical bare bulb holder?

[twist1uc]

Hello!

I was hoping for you to show me some of your ingenious ideas of making a holder for two vertical bare bulbs.
I've seen them before, but never took note of their design. And of course, I have evolved my build to now include double stacked bulbs.

Thank you!

 

[Buddler]

Read HGO sticky right above your post everthing you need to know is here..

 

[LSWM]

When I did it I used chains. Was definitely solid and safe but does block a minor amount of light. Dealing with multiple lamp cords and keeping things straight was my biggest issue.

 

[twist1uc]

Read HGO sticky right above your post everthing you need to know is here..

Now, THAT was helpful.

Oh and BTW, there isn't a single picture, illustration or diagram of a double stacked vertical bulb. The only mention is this guy's: https://www.icmag.com/ic/showpost.php?p=4349609&postcount=77 which hardly constitutes for anything useful.


I'm not trying to be a jerkoff, well maybe I am. But not for nothing, I searched, and searched and searched again. Yes Buddler, I read that thread before... and just went through every post again.
But I do appreciate your help and insight with this. If not for you....... well, I'll leave it at that.

 

[twist1uc]

When I did it I used chains. Was definitely solid and safe but does block a minor amount of light. Dealing with multiple lamp cords and keeping things straight was my biggest issue.

Do you have any pictures by chance?? TY.

 

[LSWM]

Oh and BTW, there isn't a single picture, illustration or diagram of a double stacked vertical bulb. The only mention is this guy's: https://www.icmag.com/ic/showpost.php?p=4349609&postcount=77 which hardly constitutes for anything useful.

I just was looking and I can't find my pictures from that run. Basically I just took off the V piece of my sunlight supply mogul socket assembly, and used a long bolt + nuts in the hole where the V piece went, then attached chains near the outside of it with the nuts. Same for the top. I then used zip ties I think to attach that to the ratchet rope attached to the ceiling.

 

[LSWM]

And I think you may be confused. The sticky he was referring to is this: Tutorial: How to build your own secure lamp holder for a stacked bulb vertical grow

I didn't have a tripod so I used chains.

 

[twist1uc]

And I think you may be confused. The sticky he was referring to is this: Tutorial: How to build your own secure lamp holder for a stacked bulb vertical grow

I didn't have a tripod so I used chains.

If so, then I truly apologize.
I am however, looking for something that hangs from the ceiling and the two attach... kind of what you are describing.

 

[LSWM]

This is what I use.

 

[twist1uc]

Yes, those are the type that I have. I'm also curious of your distance between the two bulbs and how you came up with that distance?
Did it work for you? Anything that you would change?

 

[LSWM]

Yes, those are the type that I have. I'm also curious of your distance between the two bulbs and how you came up with that distance?
Did it work for you? Anything that you would change?

I had extra length of chain at the top. No idea what the length was. It was 2 600s hps over 2 400 mh then I had a ballast go out and I had to switch over to 3 600s. This was in a 4x6 donut. Yielded ~3.5#s of mediocre nug, but this was due to various reasons including environment and others. .

I may stack in the future, we will see.

 

[LSWM]

I just stole this pic from Arminius' thread, hope he doesn't mind.

 

[Miraculous Meds]

That's all cool stuff but have u checked out ichabods thread. Simply hang the top light by the cord, and build a simple pvc holder for the base. this way u have ur pointed ends of lights shooting to the middle of ur grow and u can set the bottom edges of light where they go into the mogul, right at the start of growth at the top and bottom.

 

[Ttystikk]

That's all cool stuff but have u checked out ichabods thread. Simply hang the top light by the cord, and build a simple pvc holder for the base. this way u have ur pointed ends of lights shooting to the middle of ur grow and u can set the bottom edges of light where they go into the mogul, right at the start of growth at the top and bottom.

Not exactly...

I built lamp bases out of five gallon buckets and wood. These are made to place the filament at a specific height above the bottom of the cylinder. What specific height?

Allow me to digress into wave theory in physics; waves from point sources tend to interact in predictable ways., sometimes reinforcing and sometimes canceling one another's effects. In this case, we're trying to get uniform lighting intensity from two point sources on the inside surface of a cylinder.

Wave theory says that light acts as a wave, so I look at the height of the cylinder as a series of nodes, equidistant from one another up and down the center axis. Calculate for two light sources this way;

Divide your cylinder trellis height by four. Place one filament that distance above the bottom of your trellis, and the other that distance below the top of it. It may seem like they're too far apart, but each light's pattern will reinforce the other's and create ideal lighting in the center.

For three lamps; divide by six, then place your lamps at nodes one, three and five.

 

[Miraculous Meds]

Not exactly...

I built lamp bases out of five gallon buckets and wood. These are made to place the filament at a specific height above the bottom of the cylinder. What specific height?

Allow me to digress into wave theory in physics; waves from point sources tend to interact in predictable ways., sometimes reinforcing and sometimes canceling one another's effects. In this case, we're trying to get uniform lighting intensity from two point sources on the inside surface of a cylinder.

Wave theory says that light acts as a wave, so I look at the height of the cylinder as a series of nodes, equidistant from one another up and down the center axis. Calculate for two light sources this way;

Divide your cylinder trellis height by four. Place one filament that distance above the bottom of your trellis, and the other that distance below the top of it. It may seem like they're too far apart, but each light's pattern will reinforce the other's and create ideal lighting in the center.

For three lamps; divide by six, then place your lamps at nodes one, three and five.

Talk slower... Im not following. Could u go into laymens terms?

 

[Ttystikk]

Okay, for two lights;

If your trellis height is six feet, one quarter of that is a foot and a half. Place your lamps a foot and a half above the bottom and the other the same distance down from the top.

 

[Miraculous Meds]

Okay, for two lights;

If your trellis height is six feet, one quarter of that is a foot and a half. Place your lamps a foot and a half above the bottom and the other the same distance down from the top.

I don't think that placement would yield the most. In fact I have tested that and know it to be true in my system.

 

[Ttystikk]

I don't think that placement would yield the most. In fact I have tested that and know it to be true in my system.

Works great here. What works for you?

 

[Miraculous Meds]

bottom light mogul side down so bulb is pointing up, set so the bottom of the bulb is exactly at the bottom of the foliage. Top light hanging down, so the bottom of the bulb (that goes into the mogul) is level with the tops of the plants so the center of the grow gets over lap from both lights. Its very effective in that obviously anything that is directly across from the bulbs gets max light, and the center of the canopy comes out just as good cause its getting side light from both sides.

 

[Ichabod Crane]

I do it the same with a bulb set with the mogul flush at the bottom and one at the top. The only time I do move it is when I want the plants to stretch up . Then I place the top bulb higher than the top of the plant. Not much but tip of the bulb at or just above the plants.