Any idea how much paracord I will need to restring my old JRC Bedchair so it's less saggy and easier to get out of 
I had previously tightened up the elastic but it's still too low and soft.
I had previously tightened up the elastic but it's still too low and soft.
In reply to Post #1
I'd dare to suggest it would be safer to do a quick measure up on one side of your bedchair, double it, add a bit for knots and order what you need from Amazon?
Job done👍👍👍
Tel
I'd dare to suggest it would be safer to do a quick measure up on one side of your bedchair, double it, add a bit for knots and order what you need from Amazon?
Job done👍👍👍
Tel
In reply to Post #1
Have you considered Tie Wraps?
I done my old JRC bedchair and it was a lot firmer
Have you considered Tie Wraps?
I done my old JRC bedchair and it was a lot firmer
https://goarmy.co.uk/products/commando-5mm-15m-olive-paracord?variant=39444490027080
9mm I used, there was plenty and cheap enough not to worry about.
9mm I used, there was plenty and cheap enough not to worry about.
In reply to Post #3
I've done that in the past, works a treat.
I've done that in the past, works a treat.
As long as you get the right strength or you'll get on it and be laying on the floor lol
In reply to Post #1
I have always stretched the bungee cord around a second time on the two beds I've had
I have always stretched the bungee cord around a second time on the two beds I've had
In reply to Post #1
I cable tied mine. Much firmer
I cable tied mine. Much firmer
I already had some paracord but wasn't sure it'd be long enough, and once I found it I thought I'd just get stuck in.
I had 6.8m of 4mm cord, so thought I'd just start on the two centre sections. I hopefully have enough left to do the head end.
I have a load of the 2mm stuff, its thin but very strong, so I can do the foot end with that.
The existing elastic was very old and soft so although the mattress tabs were right up against the frame they soon sagged away when my ample arse tested the stretch. It made it so difficult to get up and into my boots.
So I used 3.2m on the two centre sections. This replaced 2.2m of bungee.
I have the tabs touching the frame and there is just a tiny bit of sag in the mattress but that's OK. It's a little bit noisy, the cord creaks as it pulls tight on the frame. I have put a few drops of vaseline on it but I don't think it will stop it, but I'm sure it will be OK when I'm not test wiggling
I had 6.8m of 4mm cord, so thought I'd just start on the two centre sections. I hopefully have enough left to do the head end.
I have a load of the 2mm stuff, its thin but very strong, so I can do the foot end with that.
The existing elastic was very old and soft so although the mattress tabs were right up against the frame they soon sagged away when my ample arse tested the stretch. It made it so difficult to get up and into my boots.
So I used 3.2m on the two centre sections. This replaced 2.2m of bungee.
I have the tabs touching the frame and there is just a tiny bit of sag in the mattress but that's OK. It's a little bit noisy, the cord creaks as it pulls tight on the frame. I have put a few drops of vaseline on it but I don't think it will stop it, but I'm sure it will be OK when I'm not test wiggling
In reply to Post #9
I'm assuming that "test wiggling" is code?
I'm assuming that "test wiggling" is code?
In reply to Post #10
Oi, non of that smut
So it's done.
I had enough of the thicker cord to do the head end, and I have done the foot end in the thinner cord.
I'm sure the thinner stuff would have been well strong enough anyway.
It certainly firmer, but there is already some "shape" in the mattress from years of use so it isn't too flat and rigid. Very pleased.
Oi, non of that smut
So it's done.
I had enough of the thicker cord to do the head end, and I have done the foot end in the thinner cord.
I'm sure the thinner stuff would have been well strong enough anyway.
It certainly firmer, but there is already some "shape" in the mattress from years of use so it isn't too flat and rigid. Very pleased.
In reply to Post #1
Try this -
https://www.ehmanns-fishing.de/ehmanns-fishing/liegen-stuehle/zubehoer-liegen-stuehle/595/pro-zone-kingsize-matratzenunterstuetzung
I have one on my Nash indulgance wide boy, it saved the bed from the tip, as it was too soft
Try this -
https://www.ehmanns-fishing.de/ehmanns-fishing/liegen-stuehle/zubehoer-liegen-stuehle/595/pro-zone-kingsize-matratzenunterstuetzung
I have one on my Nash indulgance wide boy, it saved the bed from the tip, as it was too soft
In reply to Post #9
The first night out with the modified bedchair was a tremendous success.
Nice and firm, but enough of a dip so you didn't feel like you would roll off.
The second night wasn't quite so good...
About 2am I turned over and felt a twang. I thought the thinner cord at the foot end had snapped at the knot as it felt like the angle of my feet had dropped down.
A short while later I had a bream bite and as I jumped up I felt another twang.
After I dealt with the slimy intruder I then checked on the bed.
The plastic hinges for the foot end had both snapped
I had to wedge a bucket under the foot end so i could try and get some more sleep.
I'm not sure if the sold JRC bedchair has somehow been affected by the vaseline I put on the cord to stop the cord rubbing. Is it possible?
The first night out with the modified bedchair was a tremendous success.
Nice and firm, but enough of a dip so you didn't feel like you would roll off.
The second night wasn't quite so good...
About 2am I turned over and felt a twang. I thought the thinner cord at the foot end had snapped at the knot as it felt like the angle of my feet had dropped down.
A short while later I had a bream bite and as I jumped up I felt another twang.
After I dealt with the slimy intruder I then checked on the bed.
The plastic hinges for the foot end had both snapped
I had to wedge a bucket under the foot end so i could try and get some more sleep.
I'm not sure if the sold JRC bedchair has somehow been affected by the vaseline I put on the cord to stop the cord rubbing. Is it possible?
In reply to Post #13
Has switching to para-cord removed all the shock absorption and now every movement at the foot end is applied to that clip with the frame acting as a great big lever?
Has switching to para-cord removed all the shock absorption and now every movement at the foot end is applied to that clip with the frame acting as a great big lever?
In reply to Post #14
I did consider this.
The mattress was supported all the way around, the tabs that hold the cord supporting the mattress were tight to the frame all around. As the cord was wrapped around the outer frame I can't see how there is increased pressure on the plastic hinges. When I unfold the bed there is no real tension and it's easy to open
So looking at the last picture I think I see what you mean...
Like any downward pressure on the foot end is forcing the plastic hinge apart...
I did consider this.
The mattress was supported all the way around, the tabs that hold the cord supporting the mattress were tight to the frame all around. As the cord was wrapped around the outer frame I can't see how there is increased pressure on the plastic hinges. When I unfold the bed there is no real tension and it's easy to open
So looking at the last picture I think I see what you mean...
Like any downward pressure on the foot end is forcing the plastic hinge apart...
In reply to Post #13
Not good
I'm not sure what plastic the fitting is made of but there's a chart that includes vaseline a little down this page
Click here
Not good
I'm not sure what plastic the fitting is made of but there's a chart that includes vaseline a little down this page
Click here
In reply to Post #15
Yes the end of the middle section frame becomes the pivot point. When pressing down on the foot end that becomes the long section of the lever, and the short section is the couple of inches between the pivot and the hinge. The principle of levers massively exaggerating the force like a crow/pry bar. This is still true with elasticated cord of course, but the shock absorbing nature of that may reduce the effect? Or it could just be fatigued plastic, but both going shortly after the switchover is suspicious in my book!
Yes the end of the middle section frame becomes the pivot point. When pressing down on the foot end that becomes the long section of the lever, and the short section is the couple of inches between the pivot and the hinge. The principle of levers massively exaggerating the force like a crow/pry bar. This is still true with elasticated cord of course, but the shock absorbing nature of that may reduce the effect? Or it could just be fatigued plastic, but both going shortly after the switchover is suspicious in my book!
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