kokosnh, have you put the spring below the small flap under which is placed the magnet, or did you put the spring above that flap?
If it doesn’t sit below that flap the issue may be a very tall magnet!
Hi Jackie or whoever else Sofirn employee is there. Any idea why you are not producing a 2700K version of the SP10 Pro? You could do a limited run and see how much demand there is for it, I am sure quite a few of us are waiting for such a version. A red SP10 Pro in 2700K with 90CRI, I am sure I would buy in a heartbeat!
Short head, short tail, and it would make a good EDC. It’s too long to sit comfortably in my pocket. So yes, a TIR and a flat tailcap would be welcome.
Thanks for the photo. You might like 519a 5700K Dome On (on left)
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Here is Opple comparison of the 519a 5700K compared to daylight where I am. You are located 30 degrees closer to the equator. That may be part of the reason we like different tints ;-):
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Sounds like you have a defective unit. Note that it might not be the tailcap. It could be the back of the tube is too short.
It might be a good idea to test to make sure that the tailcap contact is the problem.
To test, take off the tailcap and insert the battery,
bridge the edge of the body tube to the back of the battery with something conductive like long-nose pliers.
Attempt to turn on the light. If it works, then tailcap contact is confirmed to be the problem.
Assuming the contact between the tailcap and tube is the problem, rather than returning it, there is a simple fix:
Cut a small piece of something conductive, such as bare wire, copper solder braid, even part of a small paperclip.
Bend your conductive material into a “C” ring and fit it into the bottom of the tailcap to act as a spacer between the tailcap and the tube.
Alternative, you can cut sheet copper or brass into a washer shape to accomplish the same thing. I recommend cutting your spacer slightly large so it locks behind the tailcap threads and is less likely to fall out.
This fix should solve the problem and give you a working light.
Thank you Jon_Slider, great information there but looks quite daunting to me! I could pay someone I guess to make one for me, but including the astronomical postage from the USA, I think I will have to make do with my poor cousin version I have put together using Lee Zircon filters…