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Duomid Pitching with Inverted V: Tips?

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Daniel G BPL Member
PostedJun 21, 2014 at 6:02 pm

Hi there,

Went out practice pitching Cuben Duomid in the "Inverted V / A-Frame" style. I'm using LT4 poles with the GG extenders.

I'm having quite a bit of trouble getting a taught pitch and wondering if there's any particular tips/tricks with this inverted V setup? My problem seems to mostly be that the top half of the 'mid is not very taut, whereas the perimeter is pretty tight. Was wondering:

(A) How close in do you stake the 4 corners at the beginning? I'm looking for an against-the-ground pitch, so should I start with the guylines pulled right up against the linelocs and then a taut rectangle on the ground?

(B) Do you preset your poles to a particular height or judge it based on the pitch? If the former, what height? If the latter, how do you make the adjustment when the poles are at angles – felt a lot harder than a center pole that just gets jacked up?

(C) How far from the walls do you set the poles (e.g., flush, 6 inches from edge at the bottom)? Do you worry about wind on the larger panels pushing in the panels and bending the poles?

Any comments greatly appreciated!

PostedJun 21, 2014 at 7:24 pm

Hi Daniel

I set my poles at 135cm/53" and use 30cm/12" extensions. I also strap the top of the poles with a thin strip of velcro for peace of mind, I'm not sure if it's necessary though? With this combination I get a fairly wide V, I can't say exactly how far the poles are from the outer fabric, maybe 4-6". I usually pitch the corners 1-2" from the ground, I don't generally mess around with pole length, I just move the poles inward to get the required tautness, of course the lower the pitch the wider the V .
For an on the ground pitch, pull your guylines as short as they'll go and set it up as usual with the rectangular base.

Danny

James DeGraaf BPL Member
PostedJun 21, 2014 at 7:44 pm

I don't use an inverted V setup so this may not apply. But, when I set up my cuben Duomid, I stake the corners, loosen the lines then insert the pole to whatever height I want. About 135cm or thereabouts, then I re tighten the guy lines and I get pretty good results that way.

I used to stake the corners tight then insert the poke but lost living space and couldn't get a taut pitch.

I think Re tensioning after poke height is set is the key to a good taut pitch on a mid.

I have some lt4s and will have to get the pole extenders and try that out.

– James

Daniel G BPL Member
PostedJun 23, 2014 at 12:24 pm

Thanks for the comments! Staking with guylines pulled in, loosening, and then tighting is an interesting idea. Sounds like a lot of movements but worth it relative to the pitch I'm getting I think.

Anyone have experience with LT4s breaking while in shelter usage? Given the strength of the cuben and the beefy stakes I'm using, I'm wondering if that is the weak link in the shelter at this point.

PostedJun 29, 2014 at 4:57 am

I made a couple of pole jacks myself about 14" from memory. At work so cant confirm. I use them with BD poles at 130cms

I use Easton stakes for corners. I pull the guy out from the tensioner to peg length then place peg in halfway back this length on all four corners. I then put up the poles and move poles in or out at base depending on the height I want the base of the mid for the given weather conditions. Once Im happy I just then adjust the guys to get suitable tension.

I think if its sloppy in the top with base tension you really need to back of the guylines so you can start with the tension in the top of the mid and put increase pressure on base through the guylines. I still found a little wiggle in or out with one or both poles can help. However if you are after ground pitch then rig to ground as normal and walk your poles inward to get the right tension throughout.

Its defintely more finicky that with just centre pole though. I just got a dual innernet with cuben 10 inch walls so have only just started rigging the dual poles. Boy its two different shelters with the different pole options.

The duomid is a wonderful piece of kit.

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