This is called the Jesus nut. It holds the main rotor onto the helicopter. It doesn’t have any redundancy, so if it fails, you’re going to be meeting Jesus in moments.
genius
Submitted 3 weeks ago by not_IO@lemmy.blahaj.zone to [deleted]
https://lemmy.blahaj.zone/pictrs/image/d6e254cd-258c-4f3b-bc67-6c170b1cb100.webp
Comments
mercano@lemmy.world 3 weeks ago
turmacar@lemmy.world 3 weeks ago
Thankfully this one is built of many redundant layers instead of just one layer of metal.
0x0@lemmy.zip 3 weeks ago
TIL there’s only Jesus’s nuts are all over the sky.
SaveTheTuaHawk@lemmy.ca 3 weeks ago
Chem trails! Jaysus is nutting!
JelleWho@lemmy.world 3 weeks ago
To be fair, if you don’t have the files. This is an easy way to make a prototype and fit it, and then if it fits you can order it in metal. This is a cheaper proces in iternating in metal from the start
bizarroland@lemmy.world 3 weeks ago
If the choice is between being out $1,590 or plummeting to my death in order to save a few hundred bucks, then I’ll just pay the $1,590.
They call it the Jesus Nut for a reason.
SatansMaggotyCumFart@piefed.world 3 weeks ago
Because it makes Jesus Nut?
shalafi@lemmy.world 3 weeks ago
That’s what has me grinning! I’m not replacing a Jesus nut with anything that didn’t come straight from the manufacturer.
Ilovethebomb@sh.itjust.works 3 weeks ago
I’ve actually flown Robinson helicopters, and there’s no nut that looks like this on the helicopter.
So, probably a joke.
mech@feddit.org 3 weeks ago
I’d rather plummet to my death.
captainlezbian@lemmy.world 2 weeks ago
Good news is, that part ain’t getting off the ground. Bad news is, the rotor might get kinda fast first
bdonvr@thelemmy.club 3 weeks ago
No. No.
For this part? No. You want the real deal. The proper metal. The proper alloy, annealed correctly.
faythofdragons@slrpnk.net 3 weeks ago
Yeah, but to get there, you need a prototype. There’s nothing wrong with testing the fit using 3D printing before you order a copy in real materials, just don’t put it under any load.
You could print it with normal plastic filaments, but those can deform and screw with the measurements if you’ve got a really tight fit, so metal printing is a good use there.
FartsWithAnAccent@fedia.io 3 weeks ago
You can also print in different metals with various processes like laser sintering, still though, there are some things you might not want to skimp on: Probably best to stick to approved parts.
rbos@lemmy.ca 3 weeks ago
It wouldn’t surprise me if such a critical part was cast as a single metal crystal. The stresses on that rotor mist be unbelievable.
TriflingToad@lemmy.world 3 weeks ago
I’m sure it’s safe if you can do it correctly, but I would not trust myself like that
HertzDentalBar@lemmy.blahaj.zone 3 weeks ago
Pretty sure you don’t want a be doing that with an aircraft.
rumba@lemmy.zip 3 weeks ago
I printed an ABS powerwheels gear out for a friend to test the fit. 100% infill, tt was chonky, was going to get it redone in nylon.
it fit and was ripped to shreds in 30 seconds :)
Rooster326@programming.dev 3 weeks ago
FYI: Plastic Welding is a thing that exists. Use it literally all the time to fix what my kids break.
Power Wheel Wheel included. Takes literally seconds to fix a crack
rumba@lemmy.zip 3 weeks ago
myotheraccount@lemmy.world 3 weeks ago
Try 200% infill next time
rumba@lemmy.zip 3 weeks ago
Have you seen the prices on the non-Euclidean filament these days? Only Voidstar labs can afford that shit.
pineapplelover@lemmy.dbzer0.com 3 weeks ago
You needed to increase walls
Jikiya@lemmy.world 3 weeks ago
At 100% infill, it’s all wall. Though the better bet is probably using the printed part to make a mold.
Elaine@lemmy.world 3 weeks ago
Someone who owns a helicopter but is bitching about spending $1500???
Ajen@sh.itjust.works 3 weeks ago
People think private pilots are rich because airplanes are expensive. They’re not - they might be upper-middle class (with a mortgage and other debt) but most have to budget their aviation spending. Truly wealthy people don’t fly their own planes, they hire pilots and crew, and probably have no idea what a Jesus nut looks like.
That said, this is obviously satire/bait.
tomiant@piefed.social 3 weeks ago
I had to check up Jesus nut, and learned that’s what it’s called because it’s the one you pray will hold because if it don’t you crash. Hahaha
BambiDiego@lemmy.zip 3 weeks ago
I know the post is a joke but it’s more like “somebody owns a helicopter rental business and they’re bitching about repairs on helicopters they themselves don’t pilot so they themselves aren’t in danger”
sukhmel@programming.dev 3 weeks ago
Oh, this perspective didn’t occur to me, it makes everything so much worse 😅
napkin2020@sh.itjust.works 3 weeks ago
How do you think they managed to own a helicopter?
OldManBOMBIN@lemmy.world 3 weeks ago
Unfair. I’ve spent my entire life not buying expensive (or even cheap) helicopter parts and I still don’t have a helicopter.
I do have a 3d printer, though…
Hm…
Jarvis! Preheat the print bed.
matlag@sh.itjust.works 3 weeks ago
And now you’ve just given Boeing executives some great ideas how to further reduce costs! I don’t thank you!!
Multiplexer@discuss.tchncs.de 3 weeks ago
I have news for you:
3D printing is very common in the aviation industry by now.
They don’t exactly use TPU and Bambulab printers, though… ;-)SaveTheTuaHawk@lemmy.ca 3 weeks ago
Oh yes they do.
Aircraft crashed in Gloucestershire after 3D-printed part collapsed - BBC News share.google/v8NcjqE0tAK34AiI7
matlag@sh.itjust.works 2 weeks ago
“Hey, John! How much are we paying those 3D printers again? I found one here that looks like it would do just the same job for much less!” – quote that will show up in a leak in 2032 after a handful of planes crashes.
Chee_Koala@lemmy.world 3 weeks ago
Big Helicopter hates this one weird trick:
VindictiveJudge@lemmy.world 3 weeks ago
And so do the people inside the big helicopter!
ICastFist@programming.dev 3 weeks ago
And those within range of its flying blades
Fedegenerate@lemmynsfw.com 3 weeks ago
3d print part. Finish 3d printed part. Cast the print in cement. Burn the plastic out the new mold. Fill mold with the alloy of your choice. Congrats, many 1000s spent on furnace materials for a 1.5k part.
Warl0k3@lemmy.world 3 weeks ago
Discover that cast metal parts won’t meet the mechnaical requirements, gear shears, fall from sky onto local orphanage’s annual puppy adoption drive.
Fedegenerate@lemmynsfw.com 3 weeks ago
Those orphans aren’t orphans any more… Progress.
Real talk I cast turbine blades for IGT and Aerospace (not an engineer, just a floor worker). It was my impression that inside those turbines is an incredibly hostile environment, and still we cast them. We did some single crystal stuff for the really demanding parts. Is cast metal really that flawed?
SpruceBringsteen@lemmy.world 3 weeks ago
Just get one of those million dollar printers
TropicalDingdong@lemmy.world 3 weeks ago
Discover that 3d printing can’t meet the precision requirements and cast metal won’t meet the mechnaical requirements, gear shears, make peace with your fate, fall from sky onto local orphanage’s annual puppy adoption drive.
Bold assumption to make that a home-jobber would get you up into the sky.
bitjunkie@lemmy.world 3 weeks ago
More interesting than working until I have a heart attack
SpruceBringsteen@lemmy.world 3 weeks ago
Cement? They make sand specific for casting. Generally you don’t want to play with heating cement, right?
Warl0k3@lemmy.world 3 weeks ago
Industrial high precision lost-wax usually has a mold made from many layers, often either done in traditional monlith casting frames (big slabs of cement or plaster or casting sand or etc) or formed by dipping the parts into various cement slurries (a bit like a candle. The first few layers are generally a low-additive “print coat” made from ceramics akin to porcelain (that won’t react with the material being cast), and then for strength they’re bulked up with thick layers of stuff that usually has been bulked up with sand and recycled shells of precious castings that have been crushed down.)
It’s a fascinating process.
Fedegenerate@lemmynsfw.com 3 weeks ago
Just a Lemmy shitpost comment, don’t think about it too hard Sure fine sand and a runny plaster, ceramic capture detail. But you still bulk it out with rougher stuff to give the mold heft.
Maybe not cement. But I also wouldn’t recommend doing back yard casting for Life critical parts if you’re asking what your detail capturing materials should be and what your bulking out materials should be.
FiniteBanjo@feddit.online 3 weeks ago
There are Wax Filaments, btw.
Fedegenerate@lemmynsfw.com 3 weeks ago
No notes, that’s awesome!!!
I have zero intention of getting into 3d printing or back yard casting. But it’s cool that intersection has products.
Canopyflyer@lemmy.world 2 weeks ago
One time, this was back in my skydiving days so a very long time ago, the drop zone’s CASA 212 was down due to a bad hydraulic pump. The pump finally arrived and the DZO asked me to help him install it. He was a certified A&P, I just had a lot of experience wrenching on cars but it allowed me to get a lot of free jumps due to helping him out on things like this.
He handed me the pump, which was a LOT lighter than I expected and told me with a smile: “Don’t drop it.”
In inquired as to how much it cost and he replied: “$10,000.”
I was holding a pump in my hands that weighed barely 10 pounds that cost more than my car (this was circa 1998 or so).
A couple years later the igniter box on the port engine died and I helped him replace it… That was a cool $15000. The engines were about $250,000 a piece back in those days.
Canopyflyer@lemmy.world 3 weeks ago
You are ready to own an airplane if you can wake up in the morning, burn a $100 bill and flush it down the toilet without feeling anything.
You are ready to own a helicopter when you can do the same thing, except with ten $100 bills.
andros_rex@lemmy.world 2 weeks ago
With a helicopter, I think you also need to be actively suicidal.
Canopyflyer@lemmy.world 2 weeks ago
Not my video, but I did ride it that year at the World Freefall Convention.
peteypete420@sh.itjust.works 3 weeks ago
Is that why those two helicopters crashed into each other in New Jersey?
HK65@sopuli.xyz 3 weeks ago
Not likely, this would get ripped apart on engine start.
For a crash, you need to at least get to the part where you attempt a takeoff.
Railing5132@lemmy.world 3 weeks ago
It’s a Robinson. It crashed as soon as you thought about flying it.
melfie@lemy.lol 3 weeks ago
With all the bad shit happening due to corrupt government agencies, it’s refreshing to read comments in this post about how the FAA is still anal as fuck like they should be, though flying on a Boeing still makes me nervous.
FatVegan@leminal.space 3 weeks ago
I honestly don’t even believe that bolt is that cheap. I read horror stories about a set of 4 normal ass “aviation grade” screws that cost thousands of dollars.
Fedizen@lemmy.world 3 weeks ago
Its the signatures that validate the screws that you’re actually paying for.
Digit@lemmy.wtf 3 weeks ago
Please tell me they’re not done, and they’re going to make a ceramic moulding of it, to pour a very strong alloy into… And have the competence in chemistry, metallurgy, metalwork and engineering to know they have the precision and strength to make it work.
Duamerthrax@lemmy.world 3 weeks ago
Yolo.
cley_faye@lemmy.world 3 weeks ago
That sounds way more work for approximately the exact same result. If it fits, it fits :D
JATtho@lemmy.world 2 weeks ago
This is a kind of part you want a single metallic-crystal of… anything less would we subpar and jesus. So no uncontrolled cooling of the cast for you. (or the rotor can decide this is a good day for a extra slow spin and no-flight.)
ivanafterall@lemmy.world 3 weeks ago
Stop trying to gatekeep for the fat cats in aviation safety. Your time of plenty is over. We’re onto your lies.
P.S. Pretty sure that dumb little spinny blade on the tail isn’t even doing anything. Just another useless part they want to sell you.
fibojoly@sh.itjust.works 3 weeks ago
I’m sure it’s not the Jesus bolt, don’t worry.
Ach@lemmy.world 3 weeks ago
He can just 3D print a second chance at life though, so you’re being kinda whiney bro.
0x0@lemmy.zip 3 weeks ago
Ok, i’ll bite: 3D print… in what material?
ceenote@lemmy.world 3 weeks ago
Of course it’s a joke, but I am genuinely curious about why the 3d printed part looks so shitty.
anon_8675309@lemmy.world 3 weeks ago
That should last about 0.7 seconds.
huquad@lemmy.ml 3 weeks ago
1590? Actually not even a bad price
handsoffmydata@lemmy.zip 3 weeks ago
Sounds about as based as using a madcatz controller to pilot a deep sea submersible.
myfunnyaccountname@lemmy.zip 2 weeks ago
AI said it would be fine. Send it.
Shadow@lemmy.ca 3 weeks ago
I see this guy decided to move on from fixed wing to rotary after his last plane…
unexposedhazard@discuss.tchncs.de 3 weeks ago
Maybe with metal 3D printing but even that will never be as strong as a machined part.
Formfiller@lemmy.world 3 weeks ago
Marinatorres@lemmy.world 2 weeks ago
This is such a perfect example of why right-to-repair matters: sometimes a “$1,590 part” is really just access. Also, that print looks solid — I’d still check material/heat/vibration limits on a rotor part, but the ingenuity is 💯
Godric@lemmy.world 3 weeks ago
My submarine business is struggling with high “maintenance” and “safety” fees, send me your rates!
HugeNerd@lemmy.ca 3 weeks ago
My RC helicopter is sturdier.
NONE_dc@lemmy.world 3 weeks ago
Can’t use it as a mold to cast one out of actual metal?
DarrinBrunner@lemmy.world 2 weeks ago
See, what no one in here realizes is that the plan was to use this as a master to cast an aluminum one. Aluminium is a metal, and metal is strong. I’m sure everything will be fine.
ekZepp@lemmy.world 3 weeks ago
Kidding aside using 3d prints as template for metal casting is a thing. Ofc i would be very careful before using a casted piece on a complex machinery.
YourPriest_36@lemmings.world 3 weeks ago
IF YOU DON’T REPENT YOU WILL DIE. COME TO ME IN HEAVEN. THE LORD IS SPEAKING THROUGH ME.
ceenote@lemmy.world 3 weeks ago
Not needing food or shelter anymore because you’re dead is also great for your budget.
danc4498@lemmy.world 3 weeks ago
Going out with a bang is great for everybody’s budget!
a_non_monotonic_function@lemmy.world 3 weeks ago
Probably until you get to the megaton range. At that point I suspect you’re probably bringing a lot of people with you.
Canonical_Warlock@lemmy.dbzer0.com 3 weeks ago
And the environment!
stupidcasey@lemmy.world 3 weeks ago
Na, it sounds good but your ungrateful relatives take all your money.
zeca@lemmy.ml 3 weeks ago
Wont even take off