Curious how long the "user replaceable" QTC will last and how much $$ you estimate for the QTC?
-
You must be a Supporting Member to participate in the Candle Power Forums Marketplace.
You can become a Supporting Member.
Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)
- Thread starter TheFraz
- Start date
Help Support Candle Power Flashlight Forum
Obijuan Kenobe
Flashlight Enthusiast
Tiny Nugget??
Yes?
obi
Yes?
obi
The QTC lasts much longer with these new designs.
The old piston (my previous 26350 lights) had a cavity that protected the QTC but it was still able to wiggle around a bit and would pinch and creep around the edges as the QTC aged or experienced heavy use. This resulted in a lot of the flickering that QTC lights are known for. This new piston is designed to keep the QTC centered at all times and away from the edges. The piston geometry is also better - the QTC is compressed into the center even if it has crumbled. This results in material that ramps even when it is very worn. I have several family members that have versions of the prototypes of these lights they got at Christmas. They use the lights multiple times a day and they still ramp great. I use mine hundreds of times daily (trying to break the QTC down to continue to improve the design) and I typically get months of use out of a piece. Even then, the light still ramps. I think with new materials the QTC has the potential to last years.
The replacements will be probably somewhere between $2 to $5. There are also several other materials online that work in this light. I will post a link to the top as I update light information.
-Fraz
gunga
Flashaholic
Did I get missed?? I'm in for tiny nugget only.
Not missed at all! I'm gonna assemble when I get home on Wednesday.
gunga
Flashaholic
Whew! I've been interested in the smaller version of this light since you came out with the tank...
Glenn7
Flashlight Enthusiast
Hey fraz, I just need to know is there room in these lights for protected batteries?
Just pondering batteries - I've seen protected 26350 (that end up being 26390) with built-in protection and charging.
Also ICR IMR INR chemistry - I'm thinking IMR woud give the highest output - but I'm also wondering which chemistry can take the most drain from over discharging without being killed if I go unprotected.
Just pondering batteries - I've seen protected 26350 (that end up being 26390) with built-in protection and charging.
Also ICR IMR INR chemistry - I'm thinking IMR woud give the highest output - but I'm also wondering which chemistry can take the most drain from over discharging without being killed if I go unprotected.
Last edited:
Fraz, thanks for taking the time to answer the QTC question, I appreciate it mate.
There should be room - although I haven't tested anywhere near all available cells. All the 18650 cells i've tested, including protected versions, have fit. Please let me know if there is an issue.
I typically use IMR batteries with mine. I like the chemistry better. Those ICR batteries I sold with my old lights had a safe low discharge of 2v (which I never reached). I also prefer and recommend the batteries with those safe low voltages or protection for this light because of its lack of protection circuitry. Most of the time the light is near complete depletion when it's around 3v.
That being said, there are some physical protections built in just in case of a short. Also built in resistances to keep from a runaway with some of these high-discharge cells. I've found that single-cell use seems to be very safe typically.
@chipwillis I sent you a PM, but your box is full. I have a Lumenite ready to go for you! Let me know.
chipwillis
Flashlight Enthusiast
Sent you a pm
Favorite aesthetic design yet.
- Joined
- Jun 7, 2019
- Messages
- 403
New here.. These are very cool., very different
Sent from my SM-N910T using Tapatalk
Sent from my SM-N910T using Tapatalk
chipwillis
Flashlight Enthusiast
I like this one.
A few new design details added to the second post including the piston system.
Thank you! The beautiful thing about people telling you 'you can't do that' is you don't know any better until you try it.
-Fraz
euroken
Flashlight Enthusiast
