New circuit for KL4?
- Thread starter Bushman
- Start date
G Pilot,
Just stack it on top of the stock resistor. Don't try to replace the resistor. It's best to run them in parallel and divide the current among them.
Surefire coats all of their circuits with a waterproofing. You can't see it, but it's there and you can't solder through it. I just use a jeweler's file to carefully scrape at the solder joints to remove the coating. You'll see it flake up when you start to scrape.
On the later KL4's Surefire also started using a sort of potting compound on their circuits. I think they did this to distribute some of the heat generated by the circuit and to help to keep the solder joints at the power leads from beaking. These things used to be really delicate. It just makes adding resistors and PITA.
If your circuit is potted, you'll need to get rid of the potting that is covering the reisitor. What I do is hit it with some heat from a heat gun on low setting. Not much, just enough to warm the potting. This makes it easier to get it off.
Just watch where you scrape, when removing the potting. I destroyed the first potted circuit that I came across. I must have in advertently broken a connection someplace. Thank goodness I had spares.
Just stack it on top of the stock resistor. Don't try to replace the resistor. It's best to run them in parallel and divide the current among them.
Surefire coats all of their circuits with a waterproofing. You can't see it, but it's there and you can't solder through it. I just use a jeweler's file to carefully scrape at the solder joints to remove the coating. You'll see it flake up when you start to scrape.
On the later KL4's Surefire also started using a sort of potting compound on their circuits. I think they did this to distribute some of the heat generated by the circuit and to help to keep the solder joints at the power leads from beaking. These things used to be really delicate. It just makes adding resistors and PITA.
If your circuit is potted, you'll need to get rid of the potting that is covering the reisitor. What I do is hit it with some heat from a heat gun on low setting. Not much, just enough to warm the potting. This makes it easier to get it off.
Just watch where you scrape, when removing the potting. I destroyed the first potted circuit that I came across. I must have in advertently broken a connection someplace. Thank goodness I had spares.
Tony that would be great..just let me know what I owe you so you can send them out. My KL4 doesn't have any potting, should be pretty simple (I hope). How well does it run on
1 X 123 because I have a TWAK and a 5 watt SE? I stole the 5 watter that was in it and put it in a pr head because it was sooo white (I guess I got lucky)
Thanks
1 X 123 because I have a TWAK and a 5 watt SE? I stole the 5 watter that was in it and put it in a pr head because it was sooo white (I guess I got lucky)
Thanks
G Pilot,
That's what I did with the 5Wers I got out of KL4's. Some of them were just beautiful.
PM me your address and I'll send you a couple. That should do you for now. If you need more, let me know later. I'm about due to order another couple hundred.
Don't worry about payment. What are you going to paypal me the 60 cents. /ubbthreads/images/graemlins/grin.gif No, make that a dollar with postage and the cost of the envelope. /ubbthreads/images/graemlins/grin.gif
You have a TWAK to drop in there? Man, that's a pretty nice emitter. OK, I don't know electronics, but this is what I did with one of my lights. I didn't measure current across a resistor. I measured with the actual TWAK with the probes in series with the emitter. I got a smidge over 1A by running two 1 ohm resistors in parallel. /ubbthreads/images/graemlins/buttrock.gif
Food for thought?
That's what I did with the 5Wers I got out of KL4's. Some of them were just beautiful.
PM me your address and I'll send you a couple. That should do you for now. If you need more, let me know later. I'm about due to order another couple hundred.
Don't worry about payment. What are you going to paypal me the 60 cents. /ubbthreads/images/graemlins/grin.gif No, make that a dollar with postage and the cost of the envelope. /ubbthreads/images/graemlins/grin.gif
You have a TWAK to drop in there? Man, that's a pretty nice emitter. OK, I don't know electronics, but this is what I did with one of my lights. I didn't measure current across a resistor. I measured with the actual TWAK with the probes in series with the emitter. I got a smidge over 1A by running two 1 ohm resistors in parallel. /ubbthreads/images/graemlins/buttrock.gif
Food for thought?
G Pilot,
Actually, if you don't want to go that hot. I could send you a couple of 2.2 ohm resistors. A 1 ohm and 2.2 ohm in parallel with the stock resistor will give just a little more resistance than two 1 ohms.
Actually, if you don't want to go that hot. I could send you a couple of 2.2 ohm resistors. A 1 ohm and 2.2 ohm in parallel with the stock resistor will give just a little more resistance than two 1 ohms.
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