Rab Neutrino SL 200 mod

My Rab Neutrino SL 200 arrived back from As Tucas today. I’m really pleased with the work Marco has done. Just to recap, I asked him to insert some Climashield APEX 167 insulation into the underside panel where there is no insulation, converting the bag into a proper sleeping bag from being a top bag.

IMG_0658The picture above shows the panel with insulation. Marco has added a small strip of Pertex at either end to seal the sleeve. I’m impressed with the loft of the Climashield, which feels a lot more puffy than the Primaloft 100, which Rab use for the underside of the leg section of the bag.

IMG_0659Marco has done a very neat job. Apart from the different colour of the material, you would be hard pushed to know it wasn’t part of the original design. I also asked Marco to retro-fit a down collar to the neck. In my experience, down collars make a significant contribution to sealing in the warmth of a sleeping bag.

IMG_0657Again, it’s a very neat job. The photo is slightly misleading as the colour match is rather better than it looks. The bag now weighs 665g, which is pretty good for a 3-season bag. Before the mods, it weighed 573g, so the additional weight is 92g.

It will be interesting to see how it stacks up relative to my Alpkit Pipedream 400 bag (740g). I reckon they will be pretty similar for warmth. However, the Climashield on the underside of the Neutrino should allow me to dispense with the sleeping mat cover that I use as it should provide better insulation when compressed than down. This will save me an extra 100g, meaning that the total weight saved relative to the Pipedream could be 175g.

IMG_0654I was also pleased to find that I could still use the excellent dry bag that was supplied with the Neutrino. Even with the dry bag, it weighs less than the Pipedream on its own. The cost was €40 for the Climashield panel and €25 for the down collar. I think that’s good value for converting the bag into a very lightweight proper sleeping bag.  I will make another report when I’ve field tested it.

Marco at As Tucas has done a great job and it’s well worth contacting him if you have a project like this. It’s been a pleasure doing business with him. I’ve got another couple of small projects for him up my sleeve.

Disclosure: I have no formal or financial relationship with As Tucas.


3 thoughts on “Rab Neutrino SL 200 mod”

  1. Thats great value, workmanship and modification. I feel a collar makes a bag even warmer. Quilts let heat out. Sleeping bags trap heat in, and for me are still better for a backpacker. A collar really does help to keep the warmth in.

    1. This is a good example of weight well invested. 90 g are almost unnoticeable on your rucksack, but a cold bag translates to a miserable night. Some bags and quilts are straightforward to modify for much better performance.

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