Straight talk about DIY home workshop engineering | Auto Expert John Cadogan
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- Опубліковано 2 жов 2024
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Australia most important thing is to make the beers survive a crash 😂
Lol Better immigrate to Australia then
Great video, big thanks John. I relate to all of this. I'm now the wrong side of 60, no formal qualifications, but I love my shed space and have always been a self-taught DIYer. When I watch textbook type videos I'm asleep in a nanosecond. You give great, practical advice in an entertaining and down to earth way that's not just educational, but fun to watch. Just subscribed, thanks again.
More like this please!
ok
I can remember when I was a young engineer I had to design a bracket to hold up a numatic valve. So I did the calculations (no differential equations needed) designed it and took it to the chief engineer who says looks good but miles to small. I showed him the calculations and he basically said "but you've forgotten to add in the weight of the 150kg idiot who will use it as a step". Now that was real value engineering :)
Bahaha! So true.
I always tried to build everything idiot proof, but unfortunately, they always manage to build better idiots
I hope you didn't have to spell 'pneumatic'! ;-)
Remember the good old days of the 6 x 9 speakers on the back parcel shelf unrestrained, we still survived 😂
I made mine in woodwork at school. but I was safe and used double sided tape to attach!!!! Them were the days.... all ideas and no clue...
Nobody even half died. Couple speakers. Mental world 22
The good old days when the brakes weren’t fantastic and seatbelts were a front seat feature … yeah I Remember …
But when they hit us in the back of the head we just thought they had great bass
A Catholic, a Protestant and a Mormon were talking.
The Catholic says “I have ten children, one more and I have a Cricket team.”
The Protestant says ‘ I have eleven brothers, one more and we have a football team.’
The Mormon says “ I have seventeen wives, one more and I have a Golf Course.”
The Atheist says, "I have 1 wife, she has & uses all 3 holes, we're not into 10-pin bowling, so we stay home a lot."
Ah yes, the prototype. I consider myself to be pretty handy & the luckiest bloke in the world, but I've NEVER had a prototype that became a finished product.
And yes, I totally agree that learning from prototype fails, result is something to be proud of. 👍
BTW mate, thank you, thank you, thank for you this, & all your other instructional vids, I've learnt so much from them & can't get enough. You're a champion.
It depends on how many things you've built in your life though. After 30 years of fabricating all kinds of things, I know what hold things together, I know how to shape things to achieve their purpose. I rarely need to make a second version: it would be a waste of my time and materials. For less experienced people, though, sure. prototypes make sense.
Poppycock! You only need to #4 (throw away the prototype) if you didn't #3 (over-engineer the shit out of it). First may be worst, but if it's good enough - hey presto!
"The mad Jedi art of welding" priceless comment John. I absolutely loved welding when doing my welding/metal fabrication trade! The sparks, the smoke, the smell - and a perfect weld as an end result. The old man taught me and he was a gun. A good weld is a thing of beauty :)
Love a good weld bead! It’s a thing of beauty. I wanted to be a boiler maker, but had to settle for engineering. Much respect to our mechanical tradies.
I have seen beautiful looking weld beads that I could get my finger nail underneath, on a car from the factory.
I have a home project that required the assistance of a friend who can weld. This made progress halting. I went to town and bought a basic stick welder, a helmet and the basic gear. I set up a heap of scrap steel and got on UA-cam. My welds are improving, from a low base. It's been great fun and my project is extending into part 2.
Wanted to be an Engineer and ended up a Bodymaker.
Great video John, I love over engineering. Its the go. 🤗
Nice gay t-shirt John!!!
FROM THE CSIRO?
If we're going to beat someone to death with a 123 block, can it please be someone who thinks we need MORE coverage of Queen Liz's funeral?
It's a 2-4-6 block...
@@AutoExpertJC
123 bolck are very useful tools for machinist !
246 block are only good as a press for the shoe lace of the king !
LOL !
For anyone interested the T-shirt translation from car gnome into english says.... "stay at home, wear a mask".
Another great instructional video. Well worth watching again.
#1 If it works it is good enough, especially if it's free. #2 More sense to fake emissions test with Ethanol in the tank, than overhauling your engine. #3 Illegal modifications? No problem, learn some unrelated paragraphs from the road code to stun the officer with lawyer speak, they are neither legal- or car experts. (In my country it is not allowed to mount a racing harness, even if it is done to racing standards, only 3 point seat belts allowed on road cars!)- And like the T-shirt very much, can't imagine anyone calling that one gay?
Interesting side note, The HMS prince of Wales is broken badly, She had the joint in a prop shaft fail causing the prop to vear backward and to side enough to hit a rudder and doing likely months worth of damage to fix in drydock. Even the pros can have stuff go wrong
Thanks for the reminder. Popping the cargo barrier back into my car tomorrow.
haha stay at home wear a subnet
No wonder my welds are pus. I was trying to figure out how I had forgotten how to weld, but it's not me, it's the crappy rods I recently bought.
I just went and found some 25 year old rods that were still with the old buzz box welder stuck in the corner and my welds are 100 times better than with the new rods. Thanks for taking the time to teach me something I would have never figured out by myself, I only bought the new rods because I thought the old ones would have absorbed a stack of Brisbane humidity and would have been no good. They probably have absorbed a stack of humidity, but are still better than the new rods.
Fourth Law if Ghetto Engineering: Build the first one for your enemy, the second for your mate and the third one for yourself.
When you said "if you don't know what that is", I immediately thought you meant the parcel shelf.
I personally prefer a box of tissues, in suitable crocheted cover, and a lawn bowls hat on my parcel shelf.
That was a real good video.
I've always made parts heavier than needed as I'm not an engineer and motorcycle parts breaking could be fatal. (I would rather it be a bit heavy than risk a break or bend in a 'critical component'
The only time a real engineer worked out shear loads for an axle for me (while I was training around 1974) I was astounded that the double shear load was well over 100 tons and still remember it.
I taught at a trade school in USA for about 12 years and the lack of common sense was way too obvious in about 80% of students (around 11,500 total)
.It wasn't as if they were all kids, I had a German 'kid' who was 17 (good guy) and a 73yr old who inherited a business and thought employee's were 'ripping him off' (A** H***!)
You remember the very good and the very bad.
God I fucking love this new character John, You’ve bloody nailed it IMO. Straight talking Australian no bullshit with a comical way of explaining obvious but often overlooked things. Keep it coming. Properly laugh out loud stuff without the cringe. Nice one.
"Full penetration butt weld."
Tried it once. Didn't much care for it. 🤪
Can relate to this. Retired after 44 years in the VIC power industry working in maintenance then operations and technical areas. Used to deal with engineers, trades, technicians, chemists and others on a daily basis. Many a prototype contraption has been built, tested, thrown out or developed into functioning contraptions.
Thanks for your contributions towards educating people.
Stay at "localhost" and wear a "Subnet mask"? Why do you need to wear a mask at home?
Haha love the stay at home wear a mask shirt 😂
Ha thanks mate surprised there aren’t more comments. Too tech and old news I suppose
Think we missed out on the ‘subnet mask’ jokes 😂
A spare wheel fixture on the back of the car, maybe with a bracket that's always under the floor, would be pretty epic.
Hi John, Great video, love your content. I am a great believer in self locking nuts and also spring washers to add to the security of a bolt and nut fixture..keep up the good work....
whatchin you 2 times the speed .. you still sound clear as day, lol . so guys save yourself a long draw out video
You sound like my sixth wife.
"If you can't explain it simply then you don't understand it enough." I studied engineering too.
Not always. (I studied philosophy.) "If you think the answer is simple, you've yet to grasp the complexity of the question."
People building campervans/ RV's need to learn laws of physics... there's a whole show for you!
Well that does bring me back to a time when i nonchalantly crossed a road, my green, on Tollington and Hornsby intersection when some guizzzah in an escort van hammered on the anchors and from the rear flew a granite block 25mm x 400 x 800 continues on its rectilineal proposed direction pushed out the windscreen both landing in the middle of Hornsey Road, remarkably both in tact except his composure which reminded him that it probably passed his left ear by two cm, a memory neither of us will forget, i guess he didn’t do physics at school i did but it reminded me to use what i learned but didn’t in my own life apply. thanks again for the reminder.
I love and appreciate these types of videos John. Thanks mate. 👍
Rule #5 I feel attacked. But maybe I feel some things are dodgy even when I've ground it down and cleaned then welded. And not on critical components.
My 93 Ford Laser hatch back was hit at 130km it was stationary at a time an all my sockets from my tool bag got scattered from the cargo space to the passenger and drivers section my UHF radio which was under the passenger seat velcro to the floor ended up on the driver's side shit that was in the cargo space and it up on the backseat the fire extinguisher in the cargo space went off with the pin still in it and a Scissor Jack went from where it was housed in the cargo space to the back floor and this was with the cargo space cover
I stay away from Low Hydrogen Stick Electrodes like E7018, as I don't have an oven to keep them dry. Sure I could use the kitchen oven to try to dry them out, but to me it isn't worth it. Generally you also need a better DC welder as well.
I mostly use E6011 for structural joint and E6013 for thinner materials and dressing a weld. The yeild strength isn't that much of a difference for mild steel applications. Both electrodes are good for simple A/C buzz boxes, but E6011 prefers higher Open Circuit Voltages (OCV) closer to 80V.
I followed all rules except #1 when it came to my 6x12 utility trailer.
I made it with 7018AC and my 1970s 295 amp stick welder. I have an extra oven in the garage that I heated my 7018 electrodes for a few hours at 500f prior to use. Is this a legitimate way to use multi month old 7018.
I did follow rules 2 to 6 religiously!
Having just bought an EV we have a very long way to go in this country before buying and setting up ownership of one becomes easy. We bought an MG ZSEV in Essence trim as it was near on 30k cheaper than the KIA Niro which was A nice little car and and overall better than the MG but 30k better?
We straight swapped a Hyundai Tucson Highlander N-Line Diesel which I'm sure we will miss for it's creature comforts but not for the minimum $120 per week in Diesel. We will soon be travelling a minimum of 1000km per week for the work commute between my wife and I and will use the MG purely as the work hack.
The MG won for our needs for a few reasons. Firstly we have a choice of 3 dealers 1 close to home, 1 on our way to work and 1 close to work. The MG has 2 year 40k service intervals although I think they should have a 12 month safety inspection as most people have no idea about how to do basic safety checks. The 7 year unlimited Km warranty is also great as we will be doing in excess of 50k per year. We understand the MG will esentialy be worthless after 7 years but the Tucson would also have little value in just 3 years when it's warranty expires and it has over 200k on the clock.
Our ownership will be a test for the reliability of the MG and hopefully it proves trouble free as plenty I have spoken with in the EV scene say it is a solid unit.
The hurdles we faced with this our first EV purchase were simply due to lack of knowledge both on our part but in particular the dealers as none from Hyundai, KIA or MG had any idea about their EV's and could answer our questions. Tesla on the other hand know their product and have a good system but unfortunately we have no dealers close as they are all centred around the CBD or Eastern suburbs of Melbourne.
Thanks John well done. Never mind the loose cartoon it's camping gas bottles and fire extinguisher s in cab's that worry me
I love your shirts, but this one makes no sense.
Stay at Localhost and wear a subnet mask? 😬
Local host = home, subnet mask = mask... Two and a half year old shirt I'd guess!
@@donnamarie3617 Thank you for the reply but I clearly get what the shirt implies. I'm suggesting that it uses incorrect terms and isn't the zinger most of his shirts usually are. That's all.
@@donnamarie3617
Thank you. I knew what the number means, but didn't get the local host = home part.
What a fantastically wonderful video completely filled with awesomeness Extreme. Thank YOU so much for really caring about us. Great Job
I love your videos, I especially enjoyed the six laws of ghetto engineering. I was tech support for an actual ghetto crew,if there was Utube back then we would still be doing it in the same place. The guy that was like my engineering pimp had three laws “I already spent my cut,they caint afford nobody else and all you really gotta do is outlast the rest of their car”. I had one rule”get the owner and have him run the spray can,remind him you have no insurance,these other dinks will doze off on me”. I did a lot of stuff for them I didn’t think would work that I wouldn’t have done without their three laws.
The unrestrained elements problem came to the fore (here) when front seat belts were made mandatory, but not required in the back. People in the back (eg children) became weapons and either went through the front screen or killed themselves and their parents by squashing them into the dash. This was the message of the ‘buckle up in the back’ campaign. Same applies to load. It’s so important that loads are properly restrained and don’t move (or as little as possible) before their restraint kicks in. Once the object starts to move its ‘weight’ increases massively (F = ma).
I like your rules. Also remember…
In all car accidents there are at least three stages.
1 - the destructive compression (crumple) of the vehicle as it hits its target.
2 - the movement of the occupants within the vehicle once the vehicle stops and the occupants keep moving (see below).
3 - the movement of the occupant’s internal organs.
1 and 2 can and have been hugely improved and somewhat mitigated and engineered, but #3 is just biology. Ask a trauma surgeon.
Least and fewest = value engineering.
In your description, might have been useful to think of elastic v plastic deformation, just covered!
On the fasteners always remember what you are backing up, just covered! Bolts might be strong but they will rip through a thin skin.
Glad you brought in the dynamic load element.
The bolt up v bolt down question is a bit complicated. I appreciate your side and I’ve also seen occasions where a bolt down has meant that while a nut fell off, the bolt stayed put and the assembly stayed put but became rattily but thankfully didn’t cause injury. I think it depends on whether the dynamic bit is on top or below and whether sheer matters. If in doubt, add a jamb nut, a spring washer, a nylock, weld the fasteners etc.
Appreciate the vid!!
In 1944 I was crawling around the passenger side floor of my Grandmother’s 38 LaSalle investigating the several doors on the heater. I was already developing ghetto engineering but didn’t think of it that way at the time. My mother was driving and not restraining me in any way. As a slightly older kid I, managed to survive open belt machinery, 50 foot ladders, and the girl next door. In short I learned to deal with immediate deadly risk. Believe me I’m very conservative. Thanks mom.
My BIL worked in structural steel fabrication.Everything he made for whatever project we were working on was overspecced to the max.If he'd made an ashtray for his motorbike it would've been out of 10mm plate steel.
When you have a full boot, get a flat and use the space saver spare, you have to do 2 things. (1) Empty the boot and get out the space saver to use it (2) put something in the void where the space saver was otherwise the floor will collapse when you put everything back in. Unfortunately, the proper size flat wheel can't go back in there because it is too shallow. You are then left to fill up the space saver void with things like your cloths or bags. Yes, you are right. The best place for the flat full size wheel is therefore immediately behind the rear seat. Good luck squeezing all your stuff back in the boot if you are on a family holiday with a full load. How stupid is the whole space saver concept? Should be illegal from a safety point of view.
Prototypes are nice if you have the time and materials to make more than one. I solve that problem by going up a size, i.e., if 1/8" steel will do the job 1/4" steel will do it better. For instance, if I am concerned about pull out using factory washers I make my own over size washers out of a heavier gauge of steel. It just takes a hole saw or, in one case, a stainless steel rod on a lathe.
Loose batteries are a concern in auto racing where they can be mounted in the passenger compartment. The racing rule book states that they must be bolted to the floor (ratchet straps are not good enough) and covered with a marine battery case if they are lead acid. Most car floors are not strong enough to keep the bolts from pulling out during a roll over (much more common in racing) so I always suggest that they put a plate as big as the battery on the other side of the floor.
One thing not mentioned is that there are engineering tables for wood, also. Here in the US we have the "Wood Handbook" put out by the US Forest Service. It was very handy for designing shelves that would be overhead.
Back in 1985 when I started my auto mechanic trade, my boss, who was an engineer, gave me additional hints on stick weld technique. He also said that when you get the slag to curl up as you weld you have a good weld. He was able to do this consistently, (it took me some time to do this and then only occasionally). Love the ghetto engineering segments!
auto john. just an irrelevant question does your 2-4-6 block have 23 holes, or 46 holes. ?????
ps. space saver tyres suck balls. worst vehicle design ever. caught 600km from home in my kia carnival. i immediately got a full size spare made for longer / holiday trips, especially if away on the weekend.
love the videos. and the no fucks given attitude.
Another excellent vid. The info about capscrews was especially informative.
Id suggest that the reason manufacturers don’t add restraint points for cargo is that they don’t want to approve carrying any kind of cargo!
Back when i was a commercial artist, as we used to be called, rubber cement cans presented a disclaimer that basically said that their product was not designed to be used for any particular purpose!
I love that t-shirt. I presume it means stay at home, wear a mask? Thank you for the entertaining and educational videos. All the best fron the UK.
Good luck getting Jesus to turn up. He's off playing hide and seek and is nowhere to be found. He's been doing that for around 2000 years now and is very good at it.
A quarter of my home made tools are prototypes,10% do the job 😂,PERFECTLY.
8:00 put the beer on the floor in front of the rear seat! Or strap it in w/the seatbelt! Or take advantage of the isofix anchor-points & use bungee cords! Etc. there’s hundreds of solutions. 9:11
Spot on. With the rust thing if you’re wheel nuts are crying rust they are loose. Happens a lot with light trucks and campers etc.
There was a man locally to me who had a medium severity crash in an open back pickup, and his loose spare tire from the bed came through his back window, hit him in the back of the head and killed him
My elderly Auntie tells the story of stopping at the lights too fast one day and her baby, propped on the passenger seat went flying into the foot well. You might be amazed to learn that seatbelts weren't really a thing until as recently as the 1960s!
My mum recalls the time my father manufactured a baby seat with anchor points and a safety harness to strap the kids into in the back seat of the old belt less Holden. People thought it was child abuse. "That poor baby, is tied down!" She literally was abused in traffic...
The 1960 weren't really the good old days at all...
back in the day, my parents tied down the baby in a bassinette between the front and rear seats.
❤Johnny 😊you’re amazing!!!!
Does your shirt say 'Stay at home, wear a mask' or 'Stay at Dingo Piss Creek, wear a condom'?
One of the comments, ' the most important thing in a crash is how to protect your beers' 😂😂😂
That block only has one hole, it just has 23 entrances. Discuss.
Great vid JC. You certainly have the know how and the skilz. I would be very interested to see some of the projects you’ve undertaken with your jedi powers.
But have you BEEN to Missouri? I have you aren't far off.
Lol. Cool shirt. 😂
I tried wearing a subnet, but it cut off the flow of blood to my legs.
Love the t-shirt!
It's generally good advice...
Still waitin for the " destination, dingo piss creek" tshirt... 😅
@@AutoExpertJC
And so was this video.
Your explanation of some of the art of welding made me realise that I’m best off to just stick to rule 1 and 6.
It’s still interesting and a joy to watch though.
15:00 19:59 What about a longer wrench/handle/lever?🤔
OCD Dude, everything there looks pretty clean from here, dump the towel. 😉 Long and slender compression, that'd be buckling not bending ?
Yep, more weld than base metal for tensile, welding is just casting. Love your Vid's, gives me long lost pride in my work. WIA 16TC's are 7016, great for vertical ups but not a decorative finish. WIA 12P (6013) bloody beautiful finish, slag lifts itself, 1980's Freighter Trailers Ballarat had the combing rail to tie rails welded with these just for the excellent finish. ARP website has good bolt information.
Dingo Piss Creek staring John C as Mick Taylor
Mate.
I really enjoyed the welding info in regards to drag angle. My old man is a boilermaker and is a full on Jedi at joining steel, unfortunately he isn’t a Jedi when it comes to patience and teaching.
Keep up the great work mate.
Bunnings actually stock low hi too mate
I go the gorilla method ugly but strong 😂
Fred MacPhail from upper Dunkeld here John. Gotta say that milk crates and lots of 9mm cable ties work well as battery holders provided I find the appropriate tie down points. You did have me scurrying out to look hard at the back of my ancient Forester. I will upgrade my holddown points ASAP. Thankyou.
John, you have saved be money. You talked me out of wasting money on mods for my Toyota Tacoma. I was NASA certified for soldering and aerospace qualified for brazing. I haven't got welding experience. Soldering, brazing and welding are arts. You can see when someone has mastered these arts. I was an engineering tech for the Department of the Air Force. We worked on Aussie F-111's in Sacramento. I even got invited to there annual party. I enjoyed working with engineers they taught me much.
Another useful session thankyou John.
Thanks for watching.
The rear seats in cars were raised as a problem over 20 years ago wrt load carrying and collisions freeing the contents. At the time manufacturers said they would address this, and I think they have when you look at the boot lid design, and how much sturdier rear seats now feel.
Having said that it's still a good idea to position the load properly, and fasten the seat belts to give extra restraint.
Btw I don't mind the term strength, but 'over engineered' annoys me. As you say engineered = efficient. 'Over specified' is a better term in my opinion.
If you NEED an M8 bolt chances are you shouldn't be designing it... but that doesn't make using M10 instead a bad idea ;)
In my industry, I find lots of scarily mounted boxes, motorbikes, wheels and other heavy items not only fitted poorly but to very weak cosmetic bumper bars on caravans. I refuse to mount things for people when asked. I have showed many that if I can walk up and palm the existing spare wheel and it flops about like a fish on a line, it is not suitable for additional load. The other problem is explaining how much something weighs (in relation to the pivot point, wheel or axle group centres) when added to the back 3m behind that point and how it could affect overall balance of the trailer.
I like how you get info across in a simplified manner for the average person.
I dared to ask my work if the 1.5kg fire extinguisher in the ute was secured well enough with its crappy holder screwed to the floor with 2 self tappers….. basically I got laughed at. I highly doubt a race car would have something like that so poorly held in place!
7018 is a dynamic load rod used in pressure vessels and car frames because they move or twist. 6010 is a static load rod ment for filling gaps and general welding roots in pipe. Today you will see tig used more than 6010. Cheers
You truely are a good bloke, I’m now convinced that to attempt to weld a fresh cross member into last beam of my rather large boat trailer is probably not a good idea, as at some time in future, it takes a full boat weight load & pivot over that one beam, example boat ramp follies, I’ll be found out as being sub-perfect confident type welder, thanks for a matey type bum kick fella.
fun episode... I give you the up thumbs.
When i put bolt in a frame or engine cradle for example i tie a piece of bright coloured thread around the bolt head then down and round the nut head and make sure it's taught. If the part comes loose you can see quickly that something is not right with the thread looking loose or snapped. Not a perfect solution but it works good enough for me.
Great video, thank you.
There are people who religiously strap themselves into the front seats of their cars but happily let a 30 or 40kg dog roam loose on the rear seat.
Keep pad welding if you wish to be a Jedi Ghetto Fabricator. At least a 5kg box of electrodes will get you there.
us engineers shake our heads more often than not 🙄
Great video John, Please do some more like this one. I got so much from it I will now look at my home projects in a different way.
Oh man. You sort of walked us through Murphy's laws. Good work, more of your savvy is needed.
An object in motion wants to stay in motion and also I favorite one inertia for every action there is an exact and equal reaction Sir Isaac Newton was a genius or was it the Apple that fell on his head who knows
@ 37:15, I would also suggest a reason to paint is IF you are checking status as to safety you can notice wear marks (other things rubbing against) or cracks near joints etc. with a glance.
😅😅😅😅yea 6:41 loooll 6:50 😂 6:54 😅😬🤫🤔🤔🤔🤔
I'm US I was raised on 6013
I always tend to over engineer the stuff I make, I don’t want it to break in the first place.
Localhost again.
Very enjoyable video with Sunday morning coffee :)
I thought cars are supposed to be able withstand a full metal toolbox in the boot or trunk USA in a car crash
Im a mobile car valeter.. I have a 300 litre water tank in my van.
My van has an OEM bulkhead between me and the load area.
The water tank is attached to the bulkhead using 4x 2inch ratchet straps.
The anchor points to the bulkhead are 13mm bolts with 150 x 150 x 3mm plates on both sides to spread the load.
Its been in there for 14 years and never moved.
I wrote my paper on: Engine oil. How to mitigate nitrogen oxides affects on the lubricating properties
So what’s are you after Mate? A softy drivers award ???
46 holes 🕳
23 passages