Sky Lumen Nguyen Flashlight

That’s one nice light Vinh.

Originally Posted by LarryB View Post

“Wow, you really are trying hard! Doing a burn-out over it parallel was bad enough, and even though 6061 is soft, the hard ano was enough to protect it, and you didn’t scratch the ano! Perpendicular was asking too much for the 6061, it’s just too soft. 7075 would have had problems as well, but the scratches would have been much more minor, it’s MUCH harder than 6061. Other than some of the other really expensive lights made by small makers like us the lights are 6061 or sometimes 2011. The main advantage of 6061 is corrosion resistance, which is why it’s used in aircraft, but it’s soft and lower in strength than either 2011 or 7075. 7075 is getting up close to steel in its characteristics, but is VERY expensive, which is why it’s not used in many if any high production flashlights. As long as the flashlight is anodized and/or alodyned, corrosion resistance isn’t an issue.

Since you seem bent on destroying it, you should really keep going after you hit it with your high powered pellet rifle. I’d go for 22, then 308 and 9mm. Even though it’s 6061, it’s strong enough that I wouldn’t be surprised if it gets as far as the 9mm. Who knows, it might even handle the 9mm. I’m pretty confident that the 7075 will survive a 9mm if you don’t hold it fixed solidly, and who knows, it might even survive that. If you had had the 6061 versizn glued down to the asphalt strongly enough to keep it from detaching during Phuong’s burn-out, I doubt very much that the hard ano would have been fazed.”

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Our man has finally spoken! Mr. Larry is the man behind all of the computer design. On our road trip to Cali last summer Phuong and I met up with Mr. Larry and his wife for dinner to thank him for a huge purchase that he made to help me acquire my engagement ring for Phuong. Some of you might have remember that the sale close prematurely as be bought all of the lights from the sale to help me out. During dinner Larry proposed that its finally time I should build my first light. He volunteered his time and expertise with computer design and machining FREE OF CHARGE! We got SLN today 50% due to Mr. Larry! I likely contributed 10% to the left over 50%. :stuck_out_tongue:

A dear gratitude to the man that have done everything for us without ever asking for anything in return. The man that has put up with my countless request for changes in design and unreasonable requests. The man that made all my talk happened. Thank You!!!

Vinh&Phuong

The main difference between my posts and SKV89 posts are SKV89 posts are from someone who knows what they are talking about where mine are from a technical moron who just loves nice flashlights.

Mr. Larry forgot his username so he cant log back in to post. Does anyone know how to recover username from an email?

top left “contact the admin” probably a good start :slight_smile:

SL Nguyen Flashlight Torture Test 5: Heat Test

Time in Min until “too hot to hold”: 7min
Time in Min until peak temp reached: 11in
Can circuitry handle heat nonstop? YES
Max start up lumen: 2650Lumen
Test ending lumen: 1890Lumen

SL Nguyen Torture Test 6: Chemical Resistance

I assume it’s a FET driver but I would expect slightly higher max lumens so it makes me think maybe some resistance there.

Not a big deal, it might be worth it to allow the light to run cooler. However, I would run the turbo again for a few minutes and unscrew the light and see if those springs are getting hot to the touch. If they are they might sag your springs or kill your switch over time?

IDK something to consider.

All noted :slight_smile:

@vinh, are you using a mechanical switch, or an electronic tailswitch?

Mechanical

Why does your quad w2 d4svn produce 4600 lumens and this quad w2 only does 2650 lumens?

Nice work Vinh! Definitely interested in this. Been following your website & Youtube channel for years. :+1:

Likely low drain cell. I will try another unprotected.

Thank you!

Good observation. I would like to know the reason too. Thought it’s a FET driver.

Thanks Vinh-- I'm back alive! Again, nice work trying to destroy it. I will be surprised if a 9mm hit on the 7075 kills the light, as long as it isn't held fixed. If the light can absorb the hit by moving it should be able to survive it, but not without reasonable messing up of the finish, much like Phuong did with her burn-outs. It has the advantage of almost certainly deflecting one way or the other leaving energy in the bullet, and if you were to score an absolutely perfect hit on the peak of the radius you've hit it where it's strongest in terms of not deforming and should really send it for a ride, again, like the burn-outs did. Not exactly a practical test in terms of what might be a possible failure, but certainly impressive if it handles it. The 6061 the prototype is made of is very soft. If Phuong did the same thing to a 7075 version it would certainly scratch it up, but the big gouges you got in the 6061 would definitely not be there. As long as you don't mind messing up the finish a bit, feel free using it as a hammer.

So nice to hear from you Larry!I know you are super busy so very nice for u to drop by and join us.

At this point I will have to sacrifice a serial production 7075 sample. My military friend already got a military vehicle set up for the next level Run Over video. I will also start small with PCP air rifle then .22lr and up. If the light survives 9mm I consider it a major success. We have plenty of more potent calibers but that’s too optimistic. Cheers!

How about this one Vinh ——————- :smiling_imp:

Need a SLN AR500 Steel version for that :wink: