Little Monkey

www.littlemonkeycaving.co.uk

gallery/1b_customcolorscheme_t11
gallery/paypal_logo
gallery/1b_customcolorscheme_t11

... even ruder

 

 

monkey proofed

In order to ensure best possible performance, Nora 3 incorporates efficient current regulation circuitry using the latest Cree XP-L2 LEDs. The XLamp® XP-L2 LED is the first commercially available single-die LED to deliver breakthrough efficiency of up to 200 Lumen per Watt (at 350 mA operating current). LED efficiency is significant for caving lights as it effectively maximises achievable run times and performance, not least significantly at the more practical go to light levels typically employed by the well crafted caver.

 

Rude Nora 3-dive

Nora 3 Performance 

Moon mode setting operates at maximum of 8 lumen and can provide estimated 2+ weeks of light, well suited to underground camping, small grovelling passage or a long dull prusik.

 

Nora 3 has effectively zero battery consumption when switched off, so there is no particular requirement to disconnect batteries. However it is always best practice to do so when not in use for more than a few days, at least if using li-ion batteries with low remaining charge. 

 

Nora 3 operates from a wide range of batteries, including non-proprietary battery packs, individual 18650 cells, and AA batteries. For the purposes of lamp performance, typical light output and run times are based on our non proprietary 2p 6800mAh battery packs. Typical light output figures are given at 85 degC, a realistic operating temperature, particularly for higher light settings at which the LEDs produce significant heat. Run times for other 3.7v li-ion battery arrangements (of known capacity) can be approximated proportionally. Further information regarding performance using AA batteries 

Although less significant than a few years ago, due to step improvements in LED technology, heat sinking and thermal management is still an important aspect of any high output light. The efficiency of LEDs reduces when operating at increased temperature, and also at high output, i.e. they will be less bright per watt of energy used. Nora 3 features considered thermal and low battery charge management, in order to optimise performance of the lamp, and maximise life of both the LEDs and batteries. Even at highest output settings, the LEDs run well below their maximum manufacturer 3 Amp limit, a level at which they are painfully inefficient anyway. 

 

 

Default lamp settings 1-4 shown. (Typical output at 85 degC operating temperature)

 

Spot LED

Enter your text here

 
 
 
 

Flood LED

off

low

medium

medium +

high

maximum

moon mode

8 lumen

2+ weeks

-

-

-

-

-

off

-

50 lumen

60 hrs

150 lumen

20 hrs

250 lumen

12 hrs

675 lumen

4 hrs

1000 lumen

2.25 hrs (2)

low

50 lumen

60 hrs

100 lumen

30 hrs

200 lumen

15 hrs

300 lumen

10 hrs

725 lumen

3.5 hrs

-

medium

150 lumen

20 hrs (1)

200 lumen

15 hrs

300 lumen

10 hrs

400 lumen

7.5 hrs

825 lumen

3 hrs

-

medium +

250 lumen

12 hrs

300 lumen

10 hrs (3)

400 lumen

7.5 hrs

500 lumen

6 hrs

925 lumen

2.5 hrs

-

high

675 lumen

4 hrs

725 lumen

3.5 hrs

825 lumen

3 hrs

925 lumen

2.5 hrs

1350 lumen

2 hrs (4)

-

maximum

1000 lumen

2.25 hrs

-

-

-

-

-

gallery/heatsink
gallery/rnlampmoon
gallery/nora 3 operation chart
gallery/nora 3 circuit 2
gallery/automonylol

Nora 3 can be configured to individual requirement, providing a range of practical light settings to meet the needs of the caver. From 1-9 light settings can be specified, and the level of light provided by each setting can be configured to individual preference. The spot and flood LEDs can be operated separately or blended together. Each LED can be operated at low, medium, medium plus, high and maximum, offering a choice from 26 possible light combinations. See table below.