The burner in the photo in your post looks like the Evernew Martyn, is it yours?
The pic is from the web Ged, but I do have one and the trivet.
Looking at the claims for boil times on the page that you linked to, the Evernew burner seems pretty impressive compared to the Trangia. If you've used one, does your experience support their claims? It's probably still a lot less power output than a pressure stove, but definitely an improvement and at the performance they claim I'd say good enough to be in my brew kit when I'm on a tight time budget.
Yes I would say so, the Evernew stove definitely burns hotter (and consumes fuel faster), but I think part of the improvement in boil time, is down to where the jets are located on the stove - specifically, how far away they are from the base of the pot. The outer ring of jets (it has 2 rings) is nearly 2cm lower down the body of the burner than on the classic trangia. Pic again for reference...
The actual stove bodies are about identical heights and the trivet sits in the same place on both the evernew and the trangia, but the extra 2cm flame height on the evernew improves performance IMO.
Do you think the trivet slows down the time the burner takes to bloom? I've noticed with the little wire sticks that Trangias (both civvy and military) take a lot longer, probably double. That can be used to advantage if you're cooking, but it's no good if you just want a quick boil.
No, if you put the trivet on straight away, it can interfere with the bloom, I think something to do with air flow rather than heat sinking. But what I do is wait for the stove to bloom before dropping the trivet onto it (the trivet holds it's X shape if held by the lower cross member).
Obvious downside is that the evernew wont seal with fuel inside like the trangia does. Of note, the trangia simmer ring fits the evernew too and works well as a snuffer. Obviously the evernew is a fraction of the weight of the trangia - I really like mine and have taken to using it with the USGI canteen cup and cup stand. Makes a brilliant lightweight kit and loads better than the crusader setup IMO.
Hope that makes sense, I can post some pics if it will help?