Ok I measured a standard P60 shell without the spring.
A=26.28mm
B=21.57
C=14.37
D= 2.27
E=21.70
F=27.62
Those match pretty well with the graphic
The “B” value can be made bigger for better thermal contact. On a Solarforce L2m that area of the light is 22.35mm wide, on a wf-502b it is 23.93mm.
I think the 26mm / 26.5mm optics would be more appropriate than 20mm?
yea your correct wight i must been thinking about my other HS, for the bottom should i have it to fit a 20mm board and use a brass ring to fit a 17mm driver if needed ?
The bottom of this assembly extends into the battery tube IIRC. There is not enough space for a 20mm driver, so you should stick with 17mm.
thanks wight im brain storming with out a host in my hands, the mail man has mine :)
yes, wight remembers correctly. the angled bit at the bottom has to fit past a retaining ledge in the host. it has to stay a 17mm driver and the heatsink will need to be stepped/angled accordingly
A triple 17dd P60. Me like 
that's what im shooting for,
i would like to get yet another p60 host for testing this hs any recommendations on what to buy ??
IMO Solarforce is the only cheap brand which sells P60 hosts and can also be counted on to have consistent tolerances. All your other options which are consistent enough for snug mass produced heatsinks are either expensive or really expensive.
imo a solarforce host is a must-have for a flashlight enthusiast. A wf-502b costs $5, a solarforce l2 costs$12. Having both, it’s amazing what that extra $7 gets you. The solarforce is completely worth the money.
might get this
http://www.solarforceflashlight-sales.com/product_detail.php?id=435&s=6&t=FB
or
http://www.solarforceflashlight-sales.com/product_detail.php?id=216&s=42&t=FB
What about doing a quad version? Quad XPL + DD?
I like the silver plated ones that was produced just awhile back but all that copper is too heavy. I’d be interested in some aluminum ones.
L2T is one of my favorite host from Solarforce. I believe the P1 has lots of plastic and may not be the best choice for a hot drop in.
Correct, for those who want that shape the P1D is the way to go. Same lines, but in solid aluminum.
As far as a quad XP-L, I think the general idea is the same here as the problem with the X6 quads… better to build an EE X6 w/ Cute-3 and domed XP-L emitters. You’ll get more light [by skipping the dedome which is required for 24mm quads], less heat, and it’s apparently a solid host.
Nitro is either going to have to pick a height or produce a sandwich. All these different optics have different heights:
My vote is for either one of the carlco triple or quad
Let's have a re-interest in the p60 lights.. they seem to have lost their love recently.
I'm still wanting that blue l2p
These will be pretty much the same as the ones Mattaus did recently I assume?
yea i just read his thread but something just like it
I’ll be watching this post because I also looking for a reasonable price for custom P60 dropin.
Can’t wait to see the progress
PS:
AFAIK, there’s a little difference on Solarforce host vs Surefire one.
That’s why Solarforce’s dropin need a spring to be attached.
I don’t understand what you are saying. Solarforce and Surefire both normally use a spring. Here is Surefire’s P60: http://www.surefire.com/p60lamp.html