What sort of tent?

[johnr]

bivvi bags, the breathable ones that is, dont work inside a tent.

Thats crap as far as im concerned,
they act as another layer in very cold climates very well,i use mine all the time when necessary and would recommend one to everybody

go on then, how does a breathable bivvi bag work, we arent talking about it being another layer, im talking about using a breathable goretex type bivvi bag inside a tent. in order to remove the moisture from a bivvi bag, there needs to be air flow over it, thats not crap, thats a fact, for the moisture inside a bivvi bag to be removed the air needs to be able to flow over the outside of the bag. bivvi bags arent designed to keep you warm, theyre made to keep you dry. the reason they are waterproof is because they are made to be used outside. its pretty pointless to use one inside a tent anyhow,

[sexually oriented]

bivvi bags, the breathable ones that is, dont work inside a tent.

Thats crap as far as im concerned,
they act as another layer in very cold climates very well,i use mine all the time when necessary and would recommend one to everybody

go on then, how does a breathable bivvi bag work, we arent talking about it being another layer, im talking about using a breathable goretex type bivvi bag inside a tent. in order to remove the moisture from a bivvi bag, there needs to be air flow over it, thats not crap, thats a fact, for the moisture inside a bivvi bag to be removed the air needs to be able to flow over the outside of the bag. bivvi bags arent designed to keep you warm, theyre made to keep you dry. the reason they are waterproof is because they are made to be used outside. its pretty pointless to use one inside a tent anyhow,

,thanks for that

[squirrelciv]

Hmm. Interesting.

Seems to me we have 3 options.

1. someone here is telling a fib - highly unlikely as we're all mates with no hidden agendas.
2. bivvi/tent users here don't respire whilst sleeping - highly unlikely. Although they may be Gods of motorcycling, I'm pretty sure they're mortal the rest of the time.
3. there is enough air surrounding the bivvi whilst in the tent to allow it to breath - Most likely. As an experienced tent user I can vouch for plenty of air movement in there.

Interesting when theory meets fact. For my money facts rule and if the theory no longer fits then it needs challenging. After all the World was flat right up to (and slightly beyond) the point some smart ar5e sailed round it! 

[Richard]

Perhaps given the sheer rate of wind breakage around here there is indeed plenty of air movement.

I actually think you have put your finger on it here, most tents I use have air movement.  How much moisture,perspired rather than respired, can actually penetrate a thick sleeping bag never mind the bivvy I am unsure of.  Certainly I only get moisture issues when I breathe out inside the bag (stop sniggering and thinking of socks at the back).

Richard

[Mark]

(stop sniggering and thinking of socks at the back).

Richard

I was thinking of socks at the front.

Value for money tent for compactness for solo motorcyclist I'd go for this http://cgi.ebay.co.uk/VANGO-ZETES-200-2-MAN-TENT-BLACK-EXCALIBUR-NEW-/250804346335?pt=UK_SportsLeisure_HikingCamping_Tents_JN&hash=item3a651a9ddf

But for that little extra room I'd recommend one with a porch for your gear, something along the lines of this http://cgi.ebay.co.uk/Vango-Beta-250-Tent-Black-Excaliber-2-Person-Tent-/370500665327?pt=UK_SportsLeisure_HikingCamping_Tents_JN&hash=item56438f7fef