Easy inflation of the Exped Synmat UL (not integrated pump)

Cycle-touring, Expeditions, Adventures, Major cycle routes NOT LeJoG (see other special board)
User avatar
Farawayvisions
Posts: 229
Joined: 7 Feb 2014, 12:42pm
Contact:

Easy inflation of the Exped Synmat UL (not integrated pump)

Postby Farawayvisions » 15 Oct 2015, 6:08pm

Do you use an Exped Synmat sleeping mat (manual inflation) on tours and expeditions?
Being a fan of recycling and as tight as a duck’s buttock when it comes to spending money, I’ve devised a yoke for inflating the Exped Synmat UL 7 that will cost nothing. Here's my DIY version of the Exped Schnozzel, which costs about £25 if you prefer fancy gadgets.

http://www.farawayvisions.com/inflating-exped-synmat-ul-7/
Last edited by Farawayvisions on 18 Oct 2015, 7:28pm, edited 1 time in total.

hufty
Posts: 533
Joined: 28 Jan 2011, 7:24pm

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby hufty » 15 Oct 2015, 6:38pm

Instead of the cork you could cadge a short section of 22mm plastic pipe off a friendly plumber
Please do not use this post in Cycle magazine

User avatar
Farawayvisions
Posts: 229
Joined: 7 Feb 2014, 12:42pm
Contact:

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby Farawayvisions » 15 Oct 2015, 7:02pm

Can I add your comment to my blog? It's a sensible idea.

khain
Posts: 245
Joined: 5 Feb 2014, 5:42pm

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby khain » 15 Oct 2015, 11:18pm

Why can't anyone make an adaptor that works with a bicycle pump for these things?

User avatar
Monsieur
Posts: 68
Joined: 2 Feb 2013, 3:04pm

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby Monsieur » 16 Oct 2015, 5:02am

Nice and simple - always the best way.
Thanks for sharing
Solvitur ambulando

User avatar
Farawayvisions
Posts: 229
Joined: 7 Feb 2014, 12:42pm
Contact:

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby Farawayvisions » 16 Oct 2015, 6:53am

Merci Monsieur.

khain wrote:Why can't anyone make an adaptor that works with a bicycle pump for these things?


I think a bicycle pump might work with the cork as an adaptor fitting.

hufty
Posts: 533
Joined: 28 Jan 2011, 7:24pm

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby hufty » 16 Oct 2015, 12:23pm

Farawayvisions: by all means. I put a chamfer on the ends of the tube to make insertion easier but that's all. On the other end I have an exped compression sack (which keeps my sleeping bag dry) so I don't need to use bin bags etc.

Khain: an issue with the pump would be the volume of air on each stroke - could be there a while whereas inflating with a bag takes eight or nine goes.
Please do not use this post in Cycle magazine

User avatar
simonineaston
Posts: 4049
Joined: 9 May 2007, 1:06pm
Location: ...at a cricket ground

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby simonineaston » 16 Oct 2015, 3:10pm

khain wrote:Why can't anyone make an adaptor that works with a bicycle pump for these things?

I think the issue with using a tyre pump is they're intended to move a small amount of air so they reach a high pressure, whereas a bed needs the opposite.
byyeee,
SiE

User avatar
Farawayvisions
Posts: 229
Joined: 7 Feb 2014, 12:42pm
Contact:

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby Farawayvisions » 16 Oct 2015, 3:11pm

hufty wrote:Farawayvisions: by all means. I put a chamfer on the ends of the tube to make insertion easier but that's all. On the other end I have an exped compression sack (which keeps my sleeping bag dry) so I don't need to use bin bags etc.

Khain: an issue with the pump would be the volume of air on each stroke - could be there a while whereas inflating with a bag takes eight or nine goes.


Thanks Hufty.

Khain, I've tried using the pump with a nozzle I fashioned from connector ends and my arm was sore before the mat was even one quarter inflated. Not such a good idea as my original post.
20151016_100038.jpg

20151016_100022.jpg
Last edited by Farawayvisions on 18 Oct 2015, 9:55pm, edited 1 time in total.

User avatar
foxyrider
Posts: 5233
Joined: 29 Aug 2011, 10:25am
Location: Sheffield, South Yorkshire

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby foxyrider » 16 Oct 2015, 4:06pm

khain wrote:Why can't anyone make an adaptor that works with a bicycle pump for these things?


paddling pool adapter?

Available from most bike shops but is it big enough?
Convention? what's that then?
Airnimal Chameleon touring, Orbit Pro hack, Orbit Photon audax, Focus Mares AX tour, Peugeot Carbon sportive, Owen Blower vintage race - all running Tulio's finest!

User avatar
andrew_s
Posts: 5301
Joined: 7 Jan 2007, 9:29pm
Location: Gloucestershire

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby andrew_s » 16 Oct 2015, 7:08pm

A Synmat 7 M has a volume of about 3 x 20 x 72 = 4320 cubic inches.
Farawayvisions' mini-pump has a stroke volume of about 5 cubic inches, so that's about 850 strokes of the pump, or the same as about 3 or 4 bike tyres to full pressure.

khain
Posts: 245
Joined: 5 Feb 2014, 5:42pm

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby khain » 16 Oct 2015, 7:21pm

So I take it the bike pump idea isn't a goer then.

manybikes
Posts: 300
Joined: 9 Apr 2007, 10:21am

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby manybikes » 16 Oct 2015, 7:22pm

Brilliant idea. I too thought the official product too expensive and difficult to get.
When I first tried breathing to inflate on an alps tour I soon became dizzy.
Thanks

User avatar
Farawayvisions
Posts: 229
Joined: 7 Feb 2014, 12:42pm
Contact:

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby Farawayvisions » 18 Oct 2015, 7:26pm

andrew_s wrote:A Synmat 7 M has a volume of about 3 x 20 x 72 = 4320 cubic inches.
Farawayvisions' mini-pump has a stroke volume of about 5 cubic inches, so that's about 850 strokes of the pump, or the same as about 3 or 4 bike tyres to full pressure.

I'm in favour of my first idea, the one in my blog post. 3 squeezes and the mat is full.

User avatar
andrew_s
Posts: 5301
Joined: 7 Jan 2007, 9:29pm
Location: Gloucestershire

Re: Easy inflation of the Exped Synmat UL (not integrated pu

Postby andrew_s » 18 Oct 2015, 8:04pm

manybikes wrote:Brilliant idea. I too thought the official product too expensive and difficult to get.
When I first tried breathing to inflate on an alps tour I soon became dizzy.
Thanks

The trick with blowing a mat up by mouth is to breathe at your normal rate, just breathing out into the mat rather than the atmosphere. No dizziness at all, though it does take longer. You could try doing something like blowing the mat up while doing squats to increase your natural breathing rate, if you wanted.
The big bag is better though, to keep the inside of the mat from getting damp.