J25GTi
  • J25GTi
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12 years ago
Righty, I've brought myself 200m of mammut srt rope, now what denominations should I cut it into? I am in cornwall and was thinking a 100m and 2x 50m ropes, we already have a 60 and a 40m rope too, so would 2 100s be best?

I really don't know what to do!

What are peoples opinions?
RockChick
12 years ago
It rather depends on what you want to use it for! :lol: Do you have any specific trips you need specific rope lengths for?

If not, you could always start with ropes which are on the long side- and cut them down later as you need to. I'd probably go for two 100ms- but it entirely depends on where you're using them!
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J25GTi
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12 years ago
"RockChick" wrote:

It rather depends on what you want to use it for! :lol: Do you have any specific trips you need specific rope lengths for?

If not, you could always start with ropes which are on the long side- and cut them down later as you need to. I'd probably go for two 100ms- but it entirely depends on where you're using them!



That's the thing, we use them everywhere, we never really do the same place twice lol!
RockChick
12 years ago
Well you're probably best off starting with them at fairly long lengths and just seeing how you get on. You can always cut them down when you find lugging 100m of rope around too tiresome!

Sorry that's not terribly helpful, the alternative would be to ask some of the other local explorers- I'm not sure who on here is from the Cornwall area? Labrat ventures in that direction- I think!
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pwhole
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12 years ago
What about 100, 70 and 30? That way you're covered either way of your existing lengths, and a super-leightweight option for small drops - also less damage potential if there isn't loads lying around at the bottom of a pitch. I can't see you using 2 X 100m on one trip, unless it's really complicated rebelays all the way down!

Bearing in mind the 10% shrinkage factor though, which really gives you 90, 63 and 27m if you cut it that way...
Tamarmole
12 years ago
I've always found a 35m useful in the Tamar Valley -

35m, 65m and 100m might be good way to split the rope.

We brought a reel recently and split it 60m, 60m, 80m.

Mammut - is that the orange stuff? If it is be aware that it is a really fast rope. (As in "Oh s*** I wish I'd remembered a braking crab" fast).
J25GTi
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12 years ago
"Tamarmole" wrote:

I've always found a 35m useful in the Tamar Valley -

35m, 65m and 100m might be good way to split the rope.

We brought a reel recently and split it 60m, 60m, 80m.

Mammut - is that the orange stuff? If it is be aware that it is a really fast rope. (As in "Oh s*** I wish I'd remembered a braking crab" fast).



I shall have to have a think, I just know that no matter what length you cut it it will always be wrong!
Vanoord
12 years ago
"J25GTi" wrote:

"Tamarmole" wrote:

I've always found a 35m useful in the Tamar Valley -

35m, 65m and 100m might be good way to split the rope.

We brought a reel recently and split it 60m, 60m, 80m.

Mammut - is that the orange stuff? If it is be aware that it is a really fast rope. (As in "Oh s*** I wish I'd remembered a braking crab" fast).



I shall have to have a think, I just know that no matter what length you cut it it will always be wrong!



Indeed.

30m is quite handy for a a short drop - carting 100m about just to drop 10m is daft.

50m-60m is sufficient for virtually any single drop without a rebelay unless you're a Cumbrian. Anything above that and the rope bounce on the way up will make ascending very hard work.

The wildcard is how much you need at the top of a pitch - a figure of eight will use a couple of meters if the bolts are at the top of the pitch, but even I've seen things where there's 15m of rope needed to get back to a safe backup.

I suppose one critical question you have to ask is where you'd be using the ropes?

Something like 30m 40m 50m 80m might give you a lot of flexibility - and the opportunity to never need the 80m - but as you say, you'll always have the wrong one with you.




Hello again darkness, my old friend...
sinker
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12 years ago
"Vanoord" wrote:



Something like 30m 40m 50m 80m might give you a lot of flexibility - and the opportunity to never need the 80m - but as you say, you'll always have the wrong one with you.





That would cover most eventualities, and you can always join two ropes to get extra length. Just remember to practice those knot-passes first :lol:
Through trips with pull throughs? Use para-cord for the retreival :thumbup:
Yma O Hyd....
RRX
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12 years ago
I would agree with Tamarmole and go with
35m, 65m and 100m as this will cover you for pretty much everything
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Roy Morton
12 years ago
100m is useful but you probably won't use it too much. A 65m is great for most Cornish stuff and the 35m is a good 'mooching' rope and will also double as a topside extension if you can't find a nearby belay for the 65m.
50m is also a handy length for a lot of stuff down here, and not too heavy or difficult to stuff into a rope bag. 🙂
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Boy Engineer
12 years ago
Assuming that you need around 1m for a knot, either at the top end or to join (so allowing 2m per length to be on the safe side), pieces of 3,5,6,19,17,32 and 52m will allow you to do anything of up to 100m in 1m intervals. 😉
Trewillan
12 years ago
"Boy Engineer" wrote:

Assuming that you need around 1m for a knot, either at the top end or to join (so allowing 2m per length to be on the safe side), pieces of 3,5,6,19,17,32 and 52m will allow you to do anything of up to 100m in 1m intervals. ;)



You have obviously read all Martin Gardner's books, haven't you?
Boy Engineer
12 years ago
"Trewillan" wrote:

"Boy Engineer" wrote:

Assuming that you need around 1m for a knot, either at the top end or to join (so allowing 2m per length to be on the safe side), pieces of 3,5,6,19,17,32 and 52m will allow you to do anything of up to 100m in 1m intervals. ;)



You have obviously read all Martin Gardner's books, haven't you?



I haven't, actually, but I make sure I only take out the minimum amount of change (my friends might say "minimum amount of money"; no doubt one will be along shortly to comment).

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