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Choosing a SIM (79 posts / 11,697 views)
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #16 13 Apr 2021 21:50
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In reply to Post #12
NOOOOO
stuart666 stuart666
Posts: 4,779
Post #17 13 Apr 2021 22:53
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In reply to Post #11
Ive got the helium 3.8 as had that for ages but there was a big gap either side on my wide solar bed and i kept rolling off the edge, the wider glacier 5.0 fits perfectly to edge of the inner mattress so no issues with rolling off it. The extra thickness definitely makes it more comfy as i have tried both.
g4fne g4fne
Posts: 15,110
Post #18 13 Apr 2021 23:05
0
agreed ... thickness does make a difference ... not only in comfort but also in warmth. I have Helium 3,8, Glacier 5.0 and Thermarest Trail Pro (5cm thick) and there is a difference
Belch Belch
MODERATORMOD
Posts: 4,660
Post #19 14 Apr 2021 09:03
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In reply to Post #17
. . .the helium is narrow - perfect for compact beds but not anything wider. Before you buy whatever SIM measure the width between the perimeter padding and the length. IMO length is not as important but depends how tall you are and where your feet end up. . .

My standard Wychwood is 600mm + between the perimeter padding . . .
Adamroybooth Adamroybooth
Posts: 1,043
Post #20 14 Apr 2021 11:48
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In reply to Post #16
I have not had any probs with the Trakker one . . . but makes me think . . am i missing out something by not having the Helium ?
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #23 14 Apr 2021 15:08
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In reply to Post #20
Longevity will be a factor
Adamroybooth Adamroybooth
Posts: 1,043
Post #24 14 Apr 2021 20:59
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In reply to Post #23
Thanks
SouthMark45
Posts: 112
Post #25 15 Apr 2021 13:00
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Have just purchased the Mountain Warehouse Helium 3.8 which I intend to leave permanently under my sleeping bag which is attached to my bedchair. A Couple of questions to owners of this SIM please

1. How long does it take to inflate?
2. How long does it take to deflate after I open the valve?

If anyone has any other useful nuggets of advise that would be really helpful

Thanks
Chuffy Chuffy
Posts: 6,794
Post #26 15 Apr 2021 15:50
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In reply to Post #25
I just leave it for 10 minutes or longer after I've opened up the bedchair, packing it away just undo the valve and fold the bed up
SouthMark45
Posts: 112
Post #27 15 Apr 2021 16:55
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In reply to Post #26
Cheers Chuffy
Jamesvg Jamesvg
Posts: 1,165
Post #28 15 Apr 2021 19:38
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I presume a thicker SIM is in general comfier and more insulating. What do the better/more expensive SIMs add? Is it primarily just a longer life span or do they also have superior performance vs a cheaper SIM of the same thickness?
g4fne g4fne
Posts: 15,110
Post #29 15 Apr 2021 20:39
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In reply to Post #28
Same with a lot of things ... You tend to get what you pay for .... Thicker SIMS, better quality, better valves, insulating qualities etc ... The decision you make is whether the extra quality is worth the extra cost
Clarkey1959 Clarkey1959
Posts: 49
Post #30 21 Jun 2021 13:33
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In reply to Post #19
Me being thick here. I've bought a second hand Nash bedchair which looks like its a Nash Scope Air Lite? I've measured the dimensions which are length 182cms. Width from edge to edge 71cms, the centre non raised bit is 50 cms wide.
So picking your brains is the Helix 3.8 too narrow or should it fit in the inside bit?

Thanks guys
Dave
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #31 21 Jun 2021 18:01
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In reply to Post #30
I have a Helium 3.8 mat and prior to my illness was 17 stone and a 50 inch chest and trust me its plenty big enough fits inside the recess of any bedchair I would think

IF you were laying on the ground you would need a thicker wider one but you are putting it on a bed chair so its perfect no need for anything thicker or bigger its quality you need not some cheap ****ty one that lasts only a season IMO
Clarkey1959 Clarkey1959
Posts: 49
Post #32 21 Jun 2021 18:42
0
In reply to Post #31
Thanks for that. I'll order one!
Hope you are fully recovered and still able to go fishing
Cheers
Dave
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