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We had a bathtub submarine, a bathtub tank and some suggestions what else to do in a bathtub. This one here is even better: The flying bathtub[^].
If I counted right, they need 24 of the same 5000 mAh batteries I fly with, four for every motor. Probably in a 12s2p configuration.
Edit: I recognized the manufacturer of the motors, batteries and probably most of the electronics. That's about 2500 bucks worth of batteries and at least 3500 bucks for the motors. This little toy probably would cost around 8000 if you have to buy the parts in the store.
Edit^2: I have looked up the motors on the manufacturer's homepage and done some math. With four batteries there are two possible configurations:
1) 12s2p. That means 12 LiPo cells in series (= 44.4 volts) and the whole thing twice in parallel (= 10000 mAh, or 10 Ah). 10 Ah sounds great, at least until you read that the motor draws up to 100 Ampere at max. That gives you only 6 minutes until the batteries are totally empty , which should never happen.
2) 6s4p Basically that is all four batteries in parallel. That gives us 22.2 volt and 20000 mAh (= 20 Ah). In this configuration the same motor only draws 80 Ampere max. This gives us 15 minutes.
I'm aware that the motors do not run at full blast all the time, but we must calculate with some margin. For example the batteries should have 15 - 20% of their capacity left when you are done, otherwise they may be damaged or completely destroyed. We will not get very much more than those 6 or 15 minutes, which will make the bathtub a nice toy, but nothing more.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
modified 20-Aug-18 11:25am.
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Way too much time on their hands...but cool!
Everyone has a photographic memory; some just don't have film. Steven Wright
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CodeWraith wrote: what else to do in a bathtub. This one here is even better nerdier:
Alas, I still don't understand why one's mind would deviate to doing fun things in the tub with their pants on . . . so I FIFY
| Ravings en masse^ |
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| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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W∴ Balboos wrote: nerdier
You have given the answer yourself. What nerd with more than rudimentary self respect would waste his precious time with anything else than the nerdy activities he is interested in?
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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This idea is much, much older[^]. The helicopter is Sikorsky's VS300 prototype, the first helicopter that did not need to have some form of dual main rotor.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Aaahh! The future as envisioned in the 50s. Love it.
Quick question.
Knowing how some of your neighbours look after their cars in terms of maintenance, etc, and how they drive - do you want their vehicles flying over your house? 
Socialism is the Axe Body Spray of political ideologies: It never does what it claims to do, but people too young to know better keep buying it anyway. (Glenn Reynolds)
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DRHuff wrote: Knowing how some of your neighbours look after their cars in terms of maintenance, etc, and how they drive - do you want their vehicles flying over your house?
1) I own no house.
2) I would be the one the neighbors would live in fear of[^]. Heck, they already do when I test the setup of my model helicopters behind the house.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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CodeWraith wrote: 1) I own no house.
So you live in a place with no air-space above it? Wow - is it a mine or a bunker? 
CodeWraith wrote: ...behind the house.
Wait - what?!?!?
CodeWraith wrote: I would be the one the neighbors would live in fear of[^].
Yeah - that's probably already true! 
Socialism is the Axe Body Spray of political ideologies: It never does what it claims to do, but people too young to know better keep buying it anyway. (Glenn Reynolds)
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It's not that bad. When I have taken something apart i must see that everything is adjusted well before I drive all the way out to the field[^] for nothing.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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I win!
Quote: A backwards state contains Chicago and it surrounds Atlanta; it's just confused not wrong, but the result's a tie! (8)
A backwards state contains Chicago
Chicago is in Illinois - IL - Backwards LI
and it surrounds Atlanta;
Atlanta is in Georgia GA
it's just confused not wrong,
Confused: anagram, muddled
Not wrong: TRUE TURE
but the result's a tie!
LIGATURE
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Jesus no wonder I and others didn't get it 
We can’t stop here, this is bat country - Hunter S Thompson RIP
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We've been getting anagrams pretty quickly recently, so I thought I'd try a different direction. Didn't think it was that difficult though.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I agree I think some just go to anagram solving sites - what foxed me was I was looking for a word with CHI in 😬
We can’t stop here, this is bat country - Hunter S Thompson RIP
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Would I make it that easy?
Well ... maybe tomorrow, we'll see.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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This is where I was:
A backwards state: etats
contains Chicago: etchicagoats
it surrounds Atlanta: etchicatlantaagoats
confused: No clue what the hell this is anagram of.
Had no clue that this is about geography.
"It is easy to decipher extraterrestrial signals after deciphering Javascript and VB6 themselves.", ISanti[ ^]
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Super Lloyd wrote: French-English-Indian link
Does it have anything to do with the French (British) Indian war?
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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I didn't know of this yet another great example of historical social interaction between French and English!
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All 5 films get the XP rating (for eXecrable Physics). 
It's good (?) to know that ridiculous scripts and insults to the intelligence aren't limited to Hollywood. 
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Hollywood movies are excessively realistic by comparison!
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Which I coined... "Spaghetti are forever"
Let's say you have this scary complicated piece of code that no one understand. Yet it exhibit some issues.
After much effort you understand it and make a much simpler version. Chances are people will not accept the changes (can't commit without code review in some places, like my current place). For the simple reason that they have doubt the simple version is the same, since the current complicated version is gobbledigook no one understand.
The only committee approved solution to fix the spaghetti code issue is to wedge a few extra if statements in the middle of that some other quadruple nested if statements.
And so the spaghetti worsen...
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Is that ISO 1701, 1701A, 1701B, 1701C, 1701D, or 1701E?
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hey, you forgot NX 01[^]!
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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