The head of the Ultrafire WF-502B screws perfectly onto the Revtronic PT20. Clearly the LED is that of the PT20, but the reflector has to be changed with a 26.5X31mm (I did not find it, I made it with a hand-made aluminum cone)
The image below is the original PT20 at a distance of about one meter (white wall)
The image below is the PT20 with head 502B and self-realized reflector, always at a distance of about a meter from the white wall.
In normal use (about after three meters) the various light rings are not noticed; the modification can still be improved and is easily reversible, unscrew the head of the 502B and replace the one of the PT20
They are compatible. Swapped in 2S plates to the MT03 and it works with the MF01. Makes the light much "grabbier" and easy to hold. Shorter too. Unfortunately, the MF01 tube does not fit the MT03 due to the shoulder built into the tube.
I have found that the Convoy S2+ short tube (ordered from Convoy store) does not work with the Sofirn SP32A V2.0. This was a disappointing finding since MascaratumB reported that it worked in post 113 of this thread. However I now realize that was probably the V1 version. I also tried the tail cap from the Convoy S2, as this was reported to work by Streamer in post 122 above, and it does not fit. Again he says SP32 so I am not sure which version but I think V1. So as far as I can tell something is different about the SP32A V2.0 threads. If anyone has the V2.0 version and can find a short tube that works with it I would like to know about it.
Scientist, I am using the tube with the SP32 V2.0! The tube must be reversed, with the non anodized threads towards the tail of the Sofirn light!
Unless there was a new modification of the SP32 host (probable…) the tube will fit and work! I have one configured like that since I showed it in the picture!
Have you tried to use it reversed?
Remember, disappointment is to be expected when trying to “lego” parts — all you can do is report your own observations, but we know from experience that Chinese lights don’t have reliably consistent threading.