Around $4100! https://www.amronintl.com/stanley-cs113no-hydraulic-underwat... Amazing how capable tools can be, in industries that simply cannot get their work done without them and are willing to pay a healthy amount. Sometimes I wonder how good our dev tooling would be if we were willing to pay thousands a year, as opposed to the time-wasting bug-fest that is Xcode. Not singling out Apple, I’m sure all are comparab…
Underwater Chain Saws
71–80 of 97 posts
Re: Underwater Chain Saws
#72Earlier quoted context omitted.
> I've been here 13 years and am not aware of this pattern. I’ve been here 11 years and see this all the time. This, however, is not an instance of it.
I'm only aware of the opposite pattern
Yet here we are on a thread linking to a site showing an industrial underwater chainsaw, and someone has managed to connect it to tech (possibly, and normally hinting at the importance of FOSS) and managed to have a dig at Apple, Microsoft or Google.
Re: Underwater Chain Saws
#73I was wondering how to determine the power of the saw and just realized (rate of flow) * (pressure) is dimensionally equivalent to watts (power) At 2000 psi and 14gpm the saw consumes 12.2 kw or 16.3 freedom (horse) powers
Re: Underwater Chain Saws
#74Around $4100! https://www.amronintl.com/stanley-cs113no-hydraulic-underwat... Amazing how capable tools can be, in industries that simply cannot get their work done without them and are willing to pay a healthy amount. Sometimes I wonder how good our dev tooling would be if we were willing to pay thousands a year, as opposed to the time-wasting bug-fest that is Xcode. Not singling out Apple, I’m sure all are comparab…
I can imagine why these things are expensive, as someone who occasionally cleans the local Olympic pool using an underwater vacuum cleaner (just a side gig to get free diving time). Salty or chlorinated water (and public pools usually use heavily chlorinated water) will dissolve almost anything over time - I've seen chlorinated water eat through plastic or neoprene in 2-3 years of use. Account to that mentioned vacuu…
https://www.hse.gov.uk/foi/internalops/sims/cactus/5_02_18.h...
Re: Underwater Chain Saws
#75Earlier quoted context omitted.
Former chainsaw operater speaking. I cant imagine easily using a chainsaw underwater for the every action has an equal and opposite reaction thing. However, I notice that the front spikes on the saw are noticably big. When these are dug into the timber, they offer a fulcrum using which the operator can apply force onto the timber. This could lessen though not negate the issue. I gave up chainsawing the day I accident…
> Just that morning I had put on a pair of steel toecap boots for the first time. Saved my toes. Amazing coincidence. Cannot help but think that it was not a coincidence, but you feeling your toes safe because of toecaps.
Re: Underwater Chain Saws
#76Around $4100! https://www.amronintl.com/stanley-cs113no-hydraulic-underwat... Amazing how capable tools can be, in industries that simply cannot get their work done without them and are willing to pay a healthy amount. Sometimes I wonder how good our dev tooling would be if we were willing to pay thousands a year, as opposed to the time-wasting bug-fest that is Xcode. Not singling out Apple, I’m sure all are comparab…
Would we pay that directly or our employers? Also, how many would pay if the benefits are greater productivity for their employer instead of greater income from increased velocity?
Re: Underwater Chain Saws
#77Earlier quoted context omitted.
I worked at the company which used a proprietary compiler, IDE including debugger.. It was few thousands $ I believe. plus about the same amount for their proprietary JTAG adapter. Worst software I ever used. Crashy, slow, critical features missing (example: debugger can show thread list... but not the stacks of other threads). So no, I would not expect expensive commercial software to be better. It might generate 2%…
But at least the vendor would guarantee, in writing, some minimum baseline of performance?
Re: Underwater Chain Saws
#78Earlier quoted context omitted.
> I noticed it was hydraulic powered but didn't suspect it was for use under water I suspect a gasoline-powered chainsaw wouldn't work underwater... which made me wonder if maybe that does exist because you could feed it O2 from a supply tank just like the fuel, maybe even from the diver's own air tank? Now I want to know how bouyant battery-packs are and if an impractically-heavy battery-powered chainsaw work well u…
For the first question, according to [1] gasoline uses 9000L air per liter of gas and a liter of gas runs a chainsaw for an hour ish, something like 150 L/minute. This is an order of magnitude higher than humans or so, so a scuba tank that lets you dive for an hour would only let you chainsaw for maybe 5-10 minutes? [1] https://news.ycombinator.com/item?id=9504215#9505263
Re: Underwater Chain Saws
#79Earlier quoted context omitted.
I wonder if you’d get issues running an ICE under water if you went very deep, due to pressure changes on the exhaust system. Assuming you could seal up the system well enough to work at depth, and provide O2 as you mentioned. Even the pressure going into the combustion chamber could be a complicated thing, right? Say you’re at 20 feet, that’s a fair amount of pressure. But what if you’re at 80 feet? Would it still b…
If you can push the fuel and air in at ambient pressure, it shouldn't matter much right? Because the 'neutral' point of the cilinder pressure would be just as high as the pressure of the exhaust. You'd probably lose some efficiency because the difference between peak pressure and neutral pressure in thr cylinder feels like it would be smaller. Perhaps not, because you could fit much more fuel and air in the cylinder…
Re: Underwater Chain Saws
#80https://www.earthmoversmagazine.co.uk/digger-man/view,komats...