SST-90 in a P60 drop in

[JohnF]

I know it is totally impractical, but I'm getting the nailbender drop in with 3-level direct drive (max 6v). Just for the heck of it. I believe the driver levels are 15% - 45% - 100%. My only host for now is a Solarforce, 2xCR123A or 1x18650.

Can I assume that I'll only get ~ 3a. drive current (max level) with either battery option, and then only for a minute or 3?

Given that the SST-90 is too much LED for a P60, are there any other host / battery options that might make for a slightly more practical light with this drop in?

Thanks,
John F

 

[Sgt. LED]

2 of those SAFT D sized 3V lithium primary cells?
But what host? Big Leef isn't big enough.

 

[flatline]

3 amps is somewhere between 1C and 1.5C for a typical 18650 cell (depending on capacity). I don't think that should present a problem unless you have marginal cells.

Your real enemy will be heat dissipation. Can your P60 host handle the heat generated by your emitter?

--flatline

 

[JohnF]

3 amps is somewhere between 1C and 1.5C for a typical 18650 cell (depending on capacity). I don't think that should present a problem unless you have marginal cells.

Your real enemy will be heat dissipation. Can your P60 host handle the heat generated by your emitter?

--flatline

Most certainly not at 100%, but medium level should be no problem. I'm sure there is a host out there (26650's ?) that'll make the SST-90 sing a little.

 

[Slickseth]

Most certainly not at 100%, but medium level should be no problem. I'm sure there is a host out there (26650's ?) that'll make the SST-90 sing a little.

I'm working on one as I type this. Mine uses an sst-50, but can easily handle an sst-90.

It's a custom host for a single 26650. Uses a sst-50 w/ mcr27s reflector. 30mm sapphire lens. 3 mode pwm driver 3amps on high. Forward clicky. 54mm diameter x roughly 150mm -200mm length.

I've got the artwork files finished, and the body is nearly done. Expect to see a feeler thread soon!

 

[bigchelis]

Most certainly not at 100%, but medium level should be no problem. I'm sure there is a host out there (26650's ?) that'll make the SST-90 sing a little.

Fivemega sells the P60 hosts here:
http://www.candlepowerforums.com/vb/showthread.php?t=235414

Now the IMR 4000mAh variant will fit and handle the 9A of current if you DD it. I too like the 2.5A 3 level driver he has and he is currently working on that for me in SST-50 format. My thinking is less heat will net me more consistant lumens thought its use.

Keep it cool:thumbsup:

 

[JohnF]

Will my nailbender SST-90 P60 drop in drop in? If so, count me in. Let me know, PM is fine. Thanks,

John F

 

[bigchelis]

Will my nailbender SST-90 P60 drop in drop in? If so, count me in. Let me know, PM is fine. Thanks,

John F

John,

All his P60 drop-ins drop right in, but with 5A plus of current with that SST-90 you have better stock up on IMR cells

 

[JohnF]

Thanks for all of your help spending my money, but also educating me. I've bought the SST-90 nailbender drop in, the fivemega 1x26650 host, and couple 4000ma 26650's from batteryspace. Should be quite the light. Couldn't have done it without you all. Some day, with maybe a C host, it'll be even better!

John F

 

[JohnF]

Fivemega sells the P60 hosts here:
http://www.candlepowerforums.com/vb/showthread.php?t=235414

Now the IMR 4000mAh variant will fit and handle the 9A of current if you DD it. I too like the 2.5A 3 level driver he has and he is currently working on that for me in SST-50 format. My thinking is less heat will net me more consistant lumens thought its use.

Keep it cool:thumbsup:

So, you have the 3 level 2.5A regulated driver? Again showing my stupidity, using 3 level direct drive in my case, what exactly is determing max current to the emitter? Simple series resistors? Internal battery resistance? Thanks.

 

[bigchelis]

So, you have the 3 level 2.5A regulated driver? Again showing my stupidity, using 3 level direct drive in my case, what exactly is determing max current to the emitter? Simple series resistors? Internal battery resistance? Thanks.

3 level light has to have the current regulated, unless you have a 3 level soft-start switch or something.

If you use that single IMR 4000mAh cell and the SST 90 direct drive = 9A~11A of current. AS youre cell looses capacity the current will also drop, but I don't think it will drop too much and think you should be in the 5A plus the entire time.

The only 3 level SST 90 or SST 50 he has come with a 2.5A or 3A driver. Maybe he has one of those 9A drivers!!!:naughty:

 

[JohnF]

3 level light has to have the current regulated, unless you have a 3 level soft-start switch or something.

If you use that single IMR 4000mAh cell and the SST 90 direct drive = 9A~11A of current. AS youre cell looses capacity the current will also drop, but I don't think it will drop too much and think you should be in the 5A plus the entire time.

The only 3 level SST 90 or SST 50 he has come with a 2.5A or 3A driver. Maybe he has one of those 9A drivers!!!:naughty:

My understanding from PM's with nailbender:

For either of the SST's you can get a regulated 1 level driver at 2.8A, or a regulated 3 level driver at 2.5A max. Or, you can get a 1, 3, or 5 level direct drive (5 level includes low-med-high plus Strobe and SOS). He indicated that using the 3 level direct drive on max will pull around 3A from a 18650 for a short time, then drop to the current draw of the regulated driver.

I believe all his multi-level drivers have the 'turn on at last used level' feature, whether they are regulated or direct drive.

I guess I'll know more when I get it and put a meter on it using various battery configurations.

John F