Delvance
Enlightened
I was curious as to how much a ROP on 7AA outperforms a 6AA CBP ROP and how my 2S2P ROP compares to the AA version so i conducted a few ceiling bounce tests.
Each light/test used the same reflector (not model but the physical unit) to keep variables down.
2D ROP
7AA consumer grade rechargeables
Stock switch
Tailcap was NOT used, i used a copper wire to short it out to turn the light on
Result: 15.9 Lux
2D ROP
6 CBP1650
Stock switch
Tailcap was NOT used, i used a copper wire to short it out to turn the light on
Result: 15.0Lux
Now here's an interesting one
2D ROP
6 CBP1650
Stock switch
Tailcap was USED, no copper wire this time
Result: 14.5
2D ROP
6 CBP1650
Switch now contains the solderwick spring mod (but only this fix)
Tailcap was USED
Result: 17.2
3D ROP
2S2P 18650 LIon
Full switch fix
Tailcap was USED
Result: 20.3
Notes: The 7AA ROP could've performed better, the batts weren't full charged but near (i'd say they were about 85%). Interesting to see how much resistance the [email protected] tailcap imposes on the circuit.
Conclusions: 7AA consumer grade beats 6AA CBP ROP. The cells i used weren't great so a 7AA good brand ROP (Titanium's or Sanyo etc) should perform even better than this test would suggest.
Considering how the 6CBP1650 with spring mod demolished the 7AA stock switch ROP. Certain users of the 7AA config. may actually be able to mod the switch for lower resistance, although i'd caution the better brand your 7AA config. is, the higher chance you will have of instaflashing with each resistance reduction implemented compared to someone else with a inferior brand 7AA config.
Hope this helps all us ROP owners and anyone interested in building one of these fine lights.
Edit - A simple solderwick spring fix resulted in a large output increase due to the high current requirements of the ROP hola bulb. On fresh cells, this bulb can pull 4.1 amps+ easy. Circuit resistance doesn't affect high voltage/low current setups nearly as much as a low voltage/high current setup.
Each light/test used the same reflector (not model but the physical unit) to keep variables down.
2D ROP
7AA consumer grade rechargeables
Stock switch
Tailcap was NOT used, i used a copper wire to short it out to turn the light on
Result: 15.9 Lux
2D ROP
6 CBP1650
Stock switch
Tailcap was NOT used, i used a copper wire to short it out to turn the light on
Result: 15.0Lux
Now here's an interesting one
2D ROP
6 CBP1650
Stock switch
Tailcap was USED, no copper wire this time
Result: 14.5
2D ROP
6 CBP1650
Switch now contains the solderwick spring mod (but only this fix)
Tailcap was USED
Result: 17.2
3D ROP
2S2P 18650 LIon
Full switch fix
Tailcap was USED
Result: 20.3
Notes: The 7AA ROP could've performed better, the batts weren't full charged but near (i'd say they were about 85%). Interesting to see how much resistance the [email protected] tailcap imposes on the circuit.
Conclusions: 7AA consumer grade beats 6AA CBP ROP. The cells i used weren't great so a 7AA good brand ROP (Titanium's or Sanyo etc) should perform even better than this test would suggest.
Considering how the 6CBP1650 with spring mod demolished the 7AA stock switch ROP. Certain users of the 7AA config. may actually be able to mod the switch for lower resistance, although i'd caution the better brand your 7AA config. is, the higher chance you will have of instaflashing with each resistance reduction implemented compared to someone else with a inferior brand 7AA config.
Hope this helps all us ROP owners and anyone interested in building one of these fine lights.
Edit - A simple solderwick spring fix resulted in a large output increase due to the high current requirements of the ROP hola bulb. On fresh cells, this bulb can pull 4.1 amps+ easy. Circuit resistance doesn't affect high voltage/low current setups nearly as much as a low voltage/high current setup.
Last edited:
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