The bronze alloy springs have a noticeable resistance
The steel springs have an awful resistance
Best is to bridge those and you eliminated the biggest resistance with an easy fix
Basically you need to pick one or the other. Your first thought is the easier method. Look again at the first post on here and see which one suits you but be aware conneting your switch to the spring takes some electrical knowledge.
Hey guys any suggestions for the driver issue I asked about above? Post #821
Hey guys just got my blf a6 from BG. Seems this latest model has dual tail springs(smaller spring nested inside larger spring). would the bypass still be necessary or helpful? I’m guessing the dual springs helps with current flow. Searched thread and didnt see any mention of dual tail springs.
BTW- what you have created here is one hell of a light ,
When I put in on my shelf the Nitecore EC20 ran and hid behind the 18650’s. 
Helpful yes, necessary no. It’s only really necessary in cases where there’s already high amp draw like with DD triples that will overheat the springs without this mod. I left mine stock, it gets hot enough that way as it is. If you’re wanting 4A or more then by all means do it, especially with a regulated driver like a stacked 7135 or LD-x.
Sounds like a bad mcu if it won’t hold a program setting. I don’t think any if the external components would affect that but just a guess. Probably need a new driver to fix it.
Hi ,
I searching around for Zener Mod with BLF A6 driver , but I did not find it.Can someone help me ?
Same as any other linear driver I think. Replace D1 with 200 ohm resistor and stack Zener on C1. To keep low voltage detection you need to change the R1/R2 voltage divider. I think it’s somewhere around 20-22k for R2.
I made zener mod on 105c driver. I’ve got 5.6a on MT-G2 led , but after 10 seconds 7135 chips overheated and current drops down to 3.3a - this is termal throttling.
Will I have the same problem with BLF A6 driver ?
No, the FET doesn’t limit the current so there’s no heat. Current is determined by battery voltage and led Vf. At least according to the 7135 data sheets they can handle up to 2V over Vf but practically speaking it’s much less. To achieve more requires more heat sinking dedicated to the 7135’s, a lot more.
if you want run higher currents through 7135 you need to pot the driver with a heat conducting material
also has the positive that the driver is better protected against recoil and impact
another crazy way to cool the driver
he sold this light this week and wanted only 90$ for it crazy on CPF I bet some people would have paid 300$ or more
On 105c driver I made Zener mode with LVP like this way
I’ll think on BLF A6 must be like this way , Right ?
Can someone tell me why there are pin3 solder pads on the spring side of the driver???
Does anyone know where I could buy a replacement switch (not switch cover) for my
BLF A6/ Astrolux S1? Or if not that do you know where I can get another equivalent that would still work in the light. I allowed the internal plastic pieces to get too hot during a spring bypass. In my defense it was my first attempt at a spring bypass of any kind. Why oh why did I not practice on a pos light first. The switch works about 3/4s of the time because I only damaged on section but it is still super annoying especially since I love this light as my EDC. Any help would be truly appreciated. I have learned so much on this site, learned and acquired yet another addiction (fishing, knives and sharpeners, ecig mods, and now led flashlights)
-Joey
Thanks a lot SigShooter I really appreciate it
Originally, that was going to be a solderable way to turn memory on/off. It ended up not being necessary, but it was left in in case anyone else has a use for it.
Except stock firmware, are there any others we can flash driver?
It can run several others. Pretty much any 1-channel firmware should work, though it’ll only use one channel (you choose which). Or there are a small number of 2-channel options. I’ve been enjoying Crescendo on one of mine.
Thanks TK.
Lvp will work with other firmwares or it will need modification?