Aleph XR-Can / Emitter-sink Question

[bombelman]

Inner-Diameter is 0.55", perfect for GD, FluPIC, etc..
If one would use a Luxeon or SSC type emitter-package,
what height should you use for the emitter-sink (/board) ?

To flat and you would have to screw this can in too much and
risk disconnecting the battery, and too thick, the can might
be too deep into the battery-tube and *crush* the battery...

So actualy, what is the height from the bottom of the can,
to the surface where the emitter-slug sits on ?

Thanks guys ! :wave:
bombelman

 

[bombelman]

 

[McGizmo]

If you sit the can down on a flat surface with the threaded section on top (as in your pic), the distance from the flat surface up to the face of the MCPCB (sink) shelf is .324" by design. Overall height of the can is .460" and the depth of the sink bore is .136". ( .460 - .136 = .324 )

EDIT: In terms of target overall height of LE, this would depend on what reflector or optic is being used.

 

[bombelman]

Awesome...

So if I'm not mistaken, the face of the MCPCB would sit flush with
the sink-bore, correct ?

Thanks again McGizmo !

 

[McGizmo]

The face of the MCPCB Wayne and I use with the XR-E's is slightly below the top of the "can" The Z dimensions were dictated with thought to mating the XR-E with a McR-19XR properly in the A19 head. For any other applications or mods, I leave it to the doer to determin fit and any needed modifications. I am also speaking from somewhat suspect memory here...

 

[yaesumofo]

Nice project George.
Why haven't you replied to my many e-mail messages?

Who is making these for you?
Yaesumofo

Awesome...

So if I'm not mistaken, the face of the MCPCB would sit flush with
the sink-bore, correct ?

Thanks again McGizmo !

 

[bombelman]

Nice project George.
Why haven't you replied to my many e-mail messages?
Who is making these for you?
Yaesumofo

I think Don is making them for everyone, not just me.

Just sent you an e-mail.

Greets from Suriname. :wave:

 

[maxspeeds]

Don, what PCB and height should one use to mount a seoul emitter when used in an Aleph 1 head with McR-27 Seoul reflector?

 

[dat2zip]

Don, what PCB and height should one use to mount a seoul emitter when used in an Aleph 1 head with McR-27 Seoul reflector?

In general a Seoul needs to be raised 0.030" relative to a Luxeon. For the ESCan LE you will need the additional 0.030". I have a special 0.032" PCB for this and am currently out. I used the remaining on the current batch of GDuP and have ordered more.

I will try to remember to ask Cindy to update the LE kit to include both LED boards in the future.

Wayne

 

[maxspeeds]

Thanks for the quick reply Wayne. :twothumbs

 

[McGizmo]

maxspeeds,
The McR-27-S reflector will not work in the Aleph 1 as it is a much deeper reflector than the McR-27 which was what the Aleph 1 was designed to host. You can use the Seoul shimmed as Wayne stated with the original McR-27 reflector in the Aleph 1. If I misunderstand your question or the reflector designation then please disregard this comment.

 

[maxspeeds]

maxspeeds,
The McR-27-S reflector will not work in the Aleph 1 as it is a much deeper reflector than the McR-27 which was what the Aleph 1 was designed to host. You can use the Seoul shimmed as Wayne stated with the original McR-27 reflector in the Aleph 1. If I misunderstand your question or the reflector designation then please disregard this comment.

Hi Don,

Is the McR-27-S based off of the McR-27-Long reflector? I plan on using the regular McR-27 reflector with my Aleph 1 head. I'm just curious if it is possible to use the XR can with a Seoul emitter + unknown PCB instead of using the Aleph E-screw + Aleph Escrew Can + PCB? If it is possible to use the XR can with a Seoul emitter, which PCB should I purchase?

 

[McGizmo]

Maxspeeds,
Yes, the McR-27-S is based on the McR-27-L. It is essentially a 27L with .030" removed from the rear.

At one point, I had rallied for a Seoul MCPCB and it was in the works but never came to be. Wayne and I have headed down our own paths and at this point, I am not familiar with what he has in the works but I don't believe there is any solution for existing Aleph heads with the XR-Can and Seoul LED. I believe your solution is as he has suggested above using the E-Screw and ES-Can.

 

[dat2zip]

Effort was put in place last year to get a Seoul 650 MCPCB. We actually had the part made and it stalled in discussions of shipping. There were too many charges at their end and at ours that doubled to tripled the cost of the parts and we tried with no resolution to come to some agreeable terms. In the end the vendor still has the parts and is no longer talking to us.

We then switched to a second vendor and again got hit by Murphy with the Vendor quoting us a standard PCB and after we approved they found out we wanted a MCPCB. The price then doubled to tripled again since this vendor really didn't know how to make or use MCPCB and we would have been their first exposure to it.

I've basically given up on this board. Too much wasted time now. On and off communications with two different Vendors from Nov of last year to Feb of this year and no product to show for effort is a real sad state of affairs IMHO. A real BUMMER!

Wish I had a source to a reliable offshore MCPB vendor...

If I were to go forward I believe the best option would be to source the MCPCB, determine the true finished thickness and make a new one piece can like the XR but for the Seoul so that the completed assembly would be the same as the ESCan and EScrew with the Seoul raised 0.030". The one piece can is somewhat simplier process to put together.

Wayne