I agree 100% with jon
But honestly i just need those alu centerbody sections for easy MCPCB swap with standard size. Only that would be great progress.
I like it when people agree with me, thanks!
the size of the MCPCB that fits in an RRT-01 is also being discussed here:
you may find it informative
Not sure what you mean by “standard size”
to the best of my understanding the RRT-01 needs an MCPCB of 12mm, but Im not sure… Im not well versed in those details, yet
LOL 
I meant 16mm boards as standard. As i presume from the pics this should be OK.
I think not a direct fit:
Yeap but i’m thinking of clemence new alu centerbody which has opening of 16mm.
ah, thanks, did not know that… Im just catching up
alternatively, clemence also has this 10mm E21a board:
Clemence wants to install these for quad ultra hi cri mod
RRT01 pill OEM or modified can’t take anything larger than 13mm. There’s just no more space. A single E21A won’t survive more than few seconds. The current is almost 3A. I wanted to make a dedicated 12mm quadtrix E17A for RRT01 but decided not to further make it due to several limiting factors. I am working on it, to make it more universal.
As for the moment, I’ll hold anything about RRT01 modification. I just can’t take the driver as is. In my opinion a new driver is a must for this RRT01. I found a good ready to use IC capable of buck, buck-boost, or boost ideal for this RRT01. We’ll see if I have the potential to make an LED driver.
If there are still enough interest for the aluminum pill we can start an interest list for a GB. So far the estimated price I can give for an aluminum pill (with or without MCPCB mounting holes) is $17/pc. It doesn’t come with the extra O-ring, I made an extra O-ring groove behind the rotary dial to make it completely waterproof.
[Clemence]
The lack of quadtrix is a let down but I would still be in if you could supply a drop in TIR or light OP reflector that focuses well with a 3535 LED.
12 of different types of TIR samples already on the way. Will report back soon.
[Clemence]
I’m Still in for 3
With the aluminul pill can it take 16mm vr16sp4 for 4xe21A;
I’m in for one aluminum RRT01 pill when they become available. Nice looking machine work. 
I’m still in for 3 pills and TIR once available
according to my understanding of post 67, no
Any update on those TIRs? You probably already know but the ones Convoy store sells (Yajiamei I think) fit pretty closely one user reports.
10°, 15°, 25°, 30°, 40°, 60°, 90°, 110°
[Clemence]
Send invoice, thx
10° = plain, plain center lens
15° = frosted, plain center lens
25° = microlensed (pebbled), convex center lens
30° = frosted, convex center lens
60° = microlensed, convex center lens
[Clemence]
Hard to tell but looks like anything 15+ becomes acceptable improvement. Is this stock XP-L? What does center lens mean? Front glass?