Good to see the rain and strong winds making their way back onto the forecast in time for kick-off on Saturday. I would feel like I was missing out on the full SNOD experience if the conditions were too good:
I am lucky not to have suffered too many punctures in my time so elected to ditch mini pump in favour of CO2 canisters a few years ago. Squeaky bum moment occurred during IMA this year when a slow flat sucked up half a canister before being followed up later with a replacement tube (& second canister) with one left in reserve it was a nervous final 80 miles. Thankfully all OK.
Unless you're prone to punctures, canisters are a great time saving (& stress relieving) alternative.
16g tend to inflate standard road tyre between 100 - 130 psi depending on which manufacturer you buy from. This is frustrating.
As mentioned above, remember to get correct thread / non-thread canister to fit inflator. Mine is threaded as it gives me more confidence the two parts won't become unexpectedly & explosively detached from one another whilst being used.
My inflator is sizeable as it has a case to enclose canister (which gets bloody cold when being operated) and also a valve that will allow the canister to be used in part at a time. Many inflator heads only allow for single use. I wouldn't keep a part used canister for more than just one ride but it's helpful to have when inflating a part deflated tyre. You're not killing a canister each time.
Finally & here comes the science part... I read that the CO2 permeates through tubes easier than air from a pump. This may be fact or fiction, my brain isn't suitably well trained to confirm & I've not read up on the subject. So, assuming the canister will get you round your ride and probably the next few without issue, it's probably worth deflating and re-inflating using track pump at the next available opportunity. [I'd be interested to hear someone conclusively confirm / reject this notion].
Under trained & over rested. First time SNODer & occasional sub-4hrs Marathoner. Go on T Rex you can pin a 4hr 15 target to my name. Even if only for the amusement of the wiser & more experienced SNODers out there.