[quote=SKV89]
there is a misunderstanding, thanks for letting me know so I can clarify
I was not talking about turning the adjustment ring
I was referring to rotating the entire light, to measure magnetic drift, as explained in post #40
the new LED did not have the terrible outcome I feared, and had experienced with a 219c mod, the 219b mod works great!
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the normal operation of the magnetic ring on the Jetbeam RRT-01 in actual use is unchanged, the entire range from off to max requires less than 1/2 of a full rotation. This can be accomplished easily with just one hand, without the need to change grips.
this is by far the simplest UI I have ever experienced, from the time I pull out the light, ramp up, and back down and back in pocket, is the quickest and simplest interface of any light I own.
it is incredibly easy to teach a muggle, all they need to know is turn the dial up, and back down… KISS!
the handshake grip required to use the magnetic ring on the RRT-01, is vastly simpler than the overhead grip on the HDS or the overhead and then handshake of the V11R… the RRT-01 is the least likely of the three to get fumbled and dropped during operation.
the HDS requires the first 180 degree rotation to reach 2 lumens the other 180 degrees to reach max, and it ramps in steps, that look like flashes
the RRT-01 ramps smoothly, and in a shorter total arc of less than 180 degrees.
the jetbeam RRT-01 is smaller, lighter, and less expensice than an HDS, and the RRT-01 also accepts 18350, while the HDS and V11R do not.
otoh, the rotary dial on the 2011 year model HDS feels smooth like butter, the RRT-01 feels like sandpaper, it needs help, and the HDS reflector produces fewer rings in the beam. The RRT-01 reflector was designed for an XM LED, it is not ideal for the XP size Nichia
here you can see the RRT-01 reflector, it has what I call fresnel rings in it, and the opening at the base of the reflector is larger than on the HDS
the RRT-01 has a much lower minimum, and the maximum of 380 lm w N219b, is almost double that of the HDS
The HDS has a donut hole in the middle of the beam at close range, worse than the one on the RRT-01… neither beam is perfect.