james wanted my drill everywhere

[jamesmatheson]

I am James in Canada hoping someone will make a hand crank super capacitor hand drill that works everywhere
and not just where theres a plug
here is a super capacitor hand drill that charges in 15 seconds with a 5 volt 55 watt plug from my wall
https://www.amazon.com/BLUCAVE-DSD-46FL ... B012CHMW5Y
here is a hand crank that is charging a fan ( it should be charging the super capacitor hand drill)
https://www.youtube.com/watch?v=ss55kMCM4bc&t=2s
I need my hand drill to work everywhere, no matter where I am, I need my tools
I hope someone will make a hand crank super capacitor hand drill
Maybe there can be a competition with money or prizes
I really need my drill ( when everyone is gone the only thing I think about is what else I can build)

[Rorschach]

Well this is a weird one.

[Bob225]

Battery drill not a option ? super caps are only another storage device you still need a method of charging the cell once its flat, your still not get the capacity or current required for a drill

A wind-up battery drill will not work either as the output from the wind-up mech will not have enough output unless geared correctly-that means your be cranking it for hours to charge it

I think you need one of these.



or a bit and brace

[Job and Knock]

I need my hand drill to work everywhere, no matter where I am, I need my tools
I hope someone will make a hand crank super capacitor hand drill
Maybe there can be a competition with money or prizes
I really need my drill ( when everyone is gone the only thing I think about is what else I can build)

What you need is to understand the fundamental differences between a light duty drill which can drive a few screws (and slowly at that) and the sort of drill which will effectively drill decent sized deep holes in or through heavy timber. My current cordless drill (Makita DHP480) is a big, heavy 18 volt drill which generates around 600 to 650 watts and will drill 50+ 20mm diameter holes through 50mm thick softwood relatively easily. Your flash drill will drive screws very, very slowly but doesn't have the torque for heavy work. The difference is that the first application is a high torque, high energy application whilst the latter is a low torque, low energy application. In comparison it's a bit like comparing a 7.5 tonne truck with a push bike - they are both road vehicles and can carry a load, but..... just how big will a super capacitor need to be (physically) to become an effective power supply for a 250 to 750 watt capacity power tool? Secondly, AFAIK it is an immutable law of physics that you can only get as much energy out of a system as you put in, so how long do you think it will take you to hand crank the equivalent of the 40 watt hours even a low capacity 18 volt battery will deliver? That is a bit more than the effort required to drive Trevor Bayliss's wind-up radio, methinks.

I think at this stage of the game that Bob has it right if conventional cordless tools aren't your bag. I'd be interested to see someone refute this with a practical demonstration but to date I haven't seen or heard of one

[Grendel]

Article here about human powered cranks , leg rather than hand but the same principal , and the problems therein,
http://www.lowtechmagazine.com/2011/05/ ... ories.html
Luckily they do offer an alternative,
http://www.lowtechmagazine.com/2018/05/ ... orage.html
Good website well worth a look.

[Dave54]

The old "Heyden All Ball Grinder" was a good example of a foot powered tool that worked.

[Argyll]

Have you been smoking the same 'cigarettes' as Ayjay?