My 24l compressor maxes out at 8 bar, that’s 192l of air which isn’t enough to fill a dinghy to ambient pressure. You could fit a larger compressor tank but realistically you’ll lose too much space to make a viable solution.
Ah, I must have remembered wrongly the sort of pressures small compressors were operating up to.
Yes I was surprised how low it was. A dive cylinder works but then it’s harder to charge. I’ve considered lots of options and on a boat a foot pump always comes up trumps for size and space, cost, and it’s not that much hassle in the grand scheme of things. We can dream though!
Yeah but a running compressor is noisy. Lustyd understood my suggested use case correctly: Have a high pressure reservoir which is filled when the engine is running (like lorry air brakes), because the engine is noisy anyway, but then is available to use "silently" when you want to quickly inflate the dinghy, then gets "recharged" when you next run the engine. I had assumed that those sort of compressors were capable of the sort of stuff dive bottles use - even if they are I'm guessing the sort of physical size I was imagining would take a long time of engine running to get up to pressure so may not always be recharged on 15 minutes leaving the marina and 10 minutes of anchoring. I just looked at what divers use for refilling their sets, and its a totally different scale to small workshop compressors (or indeed truck brakes).
Those compressors inflate considerably slower than a foot pump though, hence the need for larger tanks while spraying as the pump doesn’t keep up with demand at all.
Or just have a hard dinghy
