Tuesday, 18 November 2008

Blue Peter Windscreen

As a spin off from my last post I was having to bring my brain out of hibernation to work out a better windscreen option for the gas stove. I’d seen some home-made options at various places on the net and decided it was time to have a go at making my own (more robust) windscreen.

My current solution consists of some spare pot cosy material from Bob and Rose which I just hinged with some aluminium tape and propped up around the stove. The strong winds at the pitch on Yewbarrow on the last trip blew the wind shield on to the stove and melted it and so here I am!

There are any number of ways to set up a suitable windscreen but I fancied the sort of task you’d get on a Blue Peter audition so set about drawing out some ideas. I then came across a site (I forget where) that seemed like a great idea. The screen had two key parts: A horizontal base which was supported by a flange on the stove body and some foil to sit on this base to act as the wind screen. I liked that it was an integrated unit and strong winds couldn’t blow the material into the burning stove as easily.

My interpretation of this design is shown below.

Windscreen

This is of course a prototype (in all honesty it probably isn't and I’ll just use this forever and never ever make another one – but it sounds good if you say the word prototype) and since this photo was taken last night (camera phone – sorry guys) I’ve drilled out around 20 13ml holes to lighten up the base.

Its made from 0.8mm thick aluminium sheet which slots in any of the two slots on the F1 light stove just above the canister connection. The two ends are curved up to create a lip for two sliding plates to secure the foil screen to the platform. Because the F1 light stove has this 1mm thick lip the screen can be swivelled around 300 degrees on the centre axis to allow for changes in the wind direction. If the wind is really bad the whole of the foil screen can be unrolled to encase the flame and protect from the wind. Because the canister is not protected on any side  and is raised off the floor by the Primus stove feet, overheating should never be a problem. In addition because the horizontal platform connects so well with the stove body it acts as a heat sink - moving heat away from the canister.

The downside is that even after weight shaving through drilling, it still weighs 48g with the foil. Bummer! I’m going to try it on the next trip on the 28th/29th of this month though to see if its worth it on those shorter, colder trips. Solo trips will always summon the God of meths and I’ll be bringing the trusty Blackfly 3.

Amen.

3 comments:

Lighthiker said...

Hi,

this is an alternative design weighing 13g:
http://theotherface.wordpress.com/2008/09/21/windschutz-20/

The Dude Abides said...

Hi Roman,

Has this guy ever thought of being a Blue Peter presenter!

This is a nice design, relying on the pot supports to hold the wind screen off the flame. I think the F1 lite's supports are shorter so might not work as well. I'm going to give it a try though

shuttleworth said...

Looking at the picture it appears to be floating on a pond, so it can't be that heavy!!