BUILDING A BASIC ROLL OVER CAR JIG, ROTISSERIE, SPIT. MX5 MIATA WITH A 1950s FORD BODY SWAP.
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- Опубліковано 7 вер 2024
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The Mongrel Part 21
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In this video I'm fabricating a car rotisserie, spit, jig etc.
My camera gear:
Camera. amzn.to/2DbvxdD
Mic. amzn.to/2DbyKd0
Tripod. amzn.to/2DxaEud
My names Matt Urch and I own and run Urchfab welding and fabrication.
I specialise in custom automotive fabrication from building roll cages to complete one off builds.
I built the worlds most unique and oldest drift car known as the drift rod which can be found on my channel.
So if your into grinding, welding, fabricating, drifting, going fast etc, your in the right place!
Big shout out to your merch company, streetshirts Matt. Made a mistake and ordered a small hoodie instead of large. I contacted them and they sent me the correct size straight away free of charge.
I now have a small hoodie surplus to requirements. If anyone would like an early Xmas present of a small Urchfab hoodie comment below. I’m in West Yorkshire so pick up only. Or if you’re elsewhere and wanna pay for the postage.
A note for all too the hoodies are quite small fitting. I’m 6’2” and slim and an XL would be a good fit for me.
facebook.com/marketplace/item/585887691843195/
Another 16.5 minutes spent in the presence of a master fabricator and welder, brilliant video Matt, “bit of a change of plan, lack of materials” love it!!
instablaster.
I’m learning so much while watching this series. I’m sure I’ll never use this knowledge, and I don’t even care. Brilliantly done and your explanations make everything completely simple to understand. Thankyou
Knowledge is never a waste.
You’re absolutely right, every day is a learning day. The day you stop thinking like that is the day you’ve started the short journey to your coffin
keith lester. That is exactly my mantra.
My leaning is towards working with wood, but I have a lot of respect for craftsmen of any type or skill set. I’m happy to try anything new, but never had the spare cash to invest in welding equipment, so I do my welding vicariously by watching folks like yourself. Ain’t UA-cam brilliant!
I agree 100%!
He teaches while working and doesn’t make you sit through the same thing over and over. All while being entertaining!
You could fit a caravan nose wheel so it's normally on 4 fixed wheels but can become a steerable trike when you need it.
Its a great idea, might be an upgrade for the future. Cheers
Good job buddy. The brackets that fit on the car - maybe get 2 lengths ( 30-40cm ) of square tube and drill a row of holes along each for the centre shafts to slot into. Fit on centre each end of the car and you can adjust vertically to find the hole as needed to get it centered and find the balance point so it rotates freely
When I built mine my last welds were at the pivot tubes. Both trestles were placed back to back on my flat work top then the inner tube placed in to the trestle fabrication to line up the whole assembly. For me it got rid of any tolerance errors I had. Enjoying the build.
With stub Axel's when I used to make sack barrow's we always welded a washer as back stop and then greased the Shaft then another washer for split pin to press against. Might go easy on the winching with weight :)
Not only are you a magician with metal but it looks like you know how to make a brew as well 😂👍
For your pivot heights to match build the brackets and bolt them onto the chassis then level the chassis and with the rotisserie frames on each end squared away you can measure the length of each end without complicated guessing once you know your center line front to back.
Even better/easier if you can set the chassis level at the correct rotisserie height to start with.
The timing of this video! I'm working on my own car, complete tear down, fixing all the rust etc. It's getting to the point where I either buy a roll over frame or make one, thanks to you I'll be having a go myself! Keep up the good work Matt 👍
I know it's probably too late but I used some old universal joints from a drive shaft on the end of each jig which allows for discrepancies in the mounting positions so never had any problems with the jig binding up. Get work and great videos, definitely one of the best on UA-cam.
I'm glad even you occasionally get the mig wire stuck to a tip! Makes me feel better!
When I built my rotisserie I made the vertical legs adjustable for height differences in the bodies (don’t want to hit the roof on the floor when you turn it) and then a cross bar to pick up the support points on the car, they then have adjustable plates on them so you can tweak it to get the centre of the car, turns easily with one finger. I made a disc with holes in so I can lock it in any position I like. Just some ideas for you. Keep up the great work cheers.
Thanks Matt for the update !!! I have had my prescribed dose now I can relax with a bit more knowledge Keep up the great Build really enjoying it
Great stuff! I was a bit surprised that you didn't put the inner tube through both tubes before you mounted and welded them. Especially as you reminded everyone about it binding if everything is not lined up. Getting the height so you can fully rotate the vehicle is a must too. Keep up the great work!
Nice quick Fab rotisserie stands , I've found the balance point is about 1/3 the height of the car will get it nicely spinning without being too heavy etc . Great work mate 👍
Nice work again Matt, That should make things a whole lot easier for you, No getting burnt laying underneath your projects.
That technical drawing explains everything
I thought that great at welding ,drawing is a bit like mine but we know what we mean .
Cheers for making, see you on the next one.
Pissing myself at the clap dance.. Even more entertaining than usual. Never considered that the fabrication of a rotisserie could be made to seem so easy. You deserve the accolade of Master Craftsman. Cheers as always Matt.
Nice one and you explain things so I can understand what your doing well done 👍🏻 I’m no engineer as I drive a lorry but things like this interest me Thanks Stevie 😄
Hello from Arizona Matt! great build!
A few years back I made a couple rotisseries, the hard part without an adjustable height is when you turn the car sideways at the two, and ten o'clock positions it wouldn't balance out. Also it starts out great with an educated guess but as you start to add components, doors, hoods, etc. things change quickly. On one of my first attempts I ended up using a high-lift jack to support the car at the two and ten positions. Also put some thinking into your rotation support pins I had an issue with the pin being sloppy, it will compound the problem with the weight of the car. I ended up making a very nice adjustable unit. Google some pictures and adapt them to your build before you get to much further. Just trying to save you some headaches.
you're like a cross between Chip Foose, Professor Calculus and a more talkative Ned from SouthPark, lol. love how simple you 'make' it look. cheers.
Great work mate. I made a good working roll over spit from two machine mart engine stands. They were pretty cheap, easy to modify and can double up as engine/gearbox stands when not in use.
You excel as a craftsman. Love watching you create.
You could have put the 2 uprights back to back and used a long piece of the rotary pipe to align the outers before welding - probably not really needed, but easy to do and it guarantees you can rotate easily without binding. Really enjoying the series.
The center of gravity is what you need to find . My rotisserie has hydro rams to lift each end and I can determine the CoG by trial and error. a bit easier than sitting down and calculating it as i used to when younger and not so senile (ha ha ) . You should have built a shop heater last summer ,it looks a bit chilly in there.
To work out the best place to put your tube so that you can rotate the shell with minimal force you you can use the hanging bob method to find the centre of mass of the shell. You will however need to suspend the shell in at least 2 positions possibly from each planned mounting point individually or suspending from the roll cage using the long tube front to back
And when you’ve finished the mongrel we can have a Patreon hog roast using that fancy bbq rotisserie your building 👍
It’s coming together Matt, once the old girls been blasted then the fun rebuild fabrication begins, literally can not wait ! 👍
Watching that saw is like a hot knife going through butter. I know it's sped up but very satisfying nonetheless.
World of Randometry my large grinding wheel chop saw makes showers of sparks....tell us about your saw.
@@ProfSimonHolland I have no metalwork skills but enjoy watching experts at work.
Urchfab, just a thought but I think it's a good idea. You could make a second set of axles (round stock or tube with a hole for the "R" clip) and attach it under the left & right side supports. So when you take them off, they stay with the frame...just a thought :)
I hope you have a great day & be safe :)
"Simple design" as simple as welding cart was lol. I love watching your videos!
Nice work. Getting the car on that looks like it'll be a challenge. :D
Just an idea for mobility. Maybe you could add another wheel at 90° from the others, just under one of the uprights and have it on a lever that'll lift the two parallel wheels just enough to scoot it sideways.
Or you could even just buy a caravan jockey wheel for 20 quid and save the effort and it'll be much easier to move around.
Nice job! I need to make one of these. I still can’t get over your welding skills. When you welded the stub axles on, your welds were fantastic.
I built mine the exact same way and I wish I had made a provision to raise or lower the horizontal head piece. I still might modify them to do that.
There are caster wheels that swivel and lock in multiple places. Would make moving it around the shop less sketchy
Knock up a brake with a disc and caliper so when you rotate the car you can hold it at the angle you want while putting the pins in also if it heavy in one side it won't spin round you can rotate it slowly
Nice rotisserie should be able to get the spots you didn't think of you're doing a great job the little cars will be sweet when he gets done
Nice work as always Matt. Thanks for the update.
Can we get a round of applause 👏
Oh yeh, ordered my Urchfab hoodie, I was number 69 :) I can't wait, am glad to be helping out, want to see the mongrel finished ;)
Hey mat loving the tec drawing way to go bro keep that project going love this channel?
Hi Matt. If you imagine your rotisserie pivots are the two ends of a lathe it really doesn't matter where you attach the car spiders as long as the stubbs sticking out of the car are in line. Eyeball the the stubbs to a string stretched alongside the car and it will turn. Balance is another thing. I think your planned attachment points won't be far out. Hope not!!! Good luck. Doing a great job.
Just make castors and put a lock pin in them so they don’t swivel and do when you pull the pin.
You could fit a trailer jockey wheel to the one end and use that to move it around...
Great job so far I’m sure you’ll sort the balance issue out buddy confident you will pull this together no problem 👍
Great content Matt
Keep the good work up!!!
I surprised you haven't got a linisher. I find it so handy with a wire wheel on the other side. Love your work Matt. Billy J.... OZ Land.
How can anyone give this guy a thumbs down.....his welding is superb every time..
Fantastic workmanship as normall
Nice, I’m working on making these for my project, kinda ran out of metal as usual though so gotta get more before I can continue lol
Could use a trailer jockey wheel as a temporary steerable wheel.
Nice fab work and I love the silly hand clap intro.
Hopefully the car is low enough that with bottom of car sitting on rotisserie you have straight line of sight through windshield for pivots of the rotisserie. So set the jig and jack the car up untill you think it's relatively balanced. Weld it up. Hopefully this is helpful but I'm sure you've been here before
Nice work Matt, looks like it will do job nicely. Cheers
Great Video, I am about to build something similar but I am using 2 Modified engine stands as my base, because they already have the heavy duty pivot point, I just need to make them taller, and add some additional bracing like what you have done :)
I’m always so impressed to see you always wearing your safety gear. Keep up the great work!
I’m thinking a string line will help keep your centre line fairly...centred...
Nice content Matt part of my daily routine got our own projects here in Canada but nothing as involved as your project.....cheers
9:02 Nearly had a good slap in the Family Jewels there pal! 🤣
Finding the center of mass is going to be tricky. You can miss by an inch or two, much farther off than that, and it'll be a pig to rotate. Guess lower, that's where the weight is...
Hey from Australia
An “R” clip. Thats a great name for them!!!
try and make the front or back of spit adjustable for hight to help get the center balance line
Just got my shirt and hoodie here in the USA.. Got them perfect and fast shipping.. :)
I just want to say that your welding is very cool. in fact, the welds are rather sexy.....lol
Your axis need to be hinged so misalignment won't be a problem . Udder wise Good Job !
Matt, have an angled bracket on the front of the car to match the height of the rear.
Very good
Madness I've been on with mine almost 2 weeks and it's almost identical
If you need to find the height of your CG there is a fairly simple way to find it, But you'll need helpers. Get a crew of guys (and gals too - don't want to be sexist!) to lift the the car up tilting it on one sill. Lift until the crew on either side agrees that the car is balanced: no force required to keep in place, At this point measure the triangle formed by the two sills and the floor. Because the car is balanced on the sill on the floor, you now know that the CG is on an axis parallel to that sill very near to the center plane of the car (i.e.: when the car is sitting level - the center plane is perpendicular to the floor dividing it front to rear, floor to roof) directly above the sill. With the car balanced you could easily weld some temp supports to hold it steady and find the CG either by taking measurements or (if you've pre-marked the line of the center plane on each end) just mark the spot on each end that is on the plane and above the line on floor congruent with the sill edge.
Yes, a prime example on how stuff works on paper.
@@valkman761 - Notice that I didn't say it would be easy! Nor did I say it would be absolutely accurate. It will be close enough as long as the center of mass isn't too far left or right. And it helps if you place a dunnage mat on the floor to keep the car from sliding and scraping the sill. And it is best if you mark the center plane on the car with a sharpie prior to tipping it up. And mark the sill line on the floor! (Oh yeah, a safety chain to keep the dang thing from falling would be a nice touch.)
There are a few ways of locating your CG close enough to balance your car on a rotissary. Some sound good in theory but in reality are nearly impossible in execution. Such as hanging the car aloft by one point and hanging a plumb bob from that point.: the bob string will go through the CG. Mark the bob point or tape a string in place and then hang the car from another point and the bob hanging from the second point will intersect the first string. CG found! But OMG, you need a crane to hoist your car in the air and you still got to figure out how to mark the location of the axis of the string. As you said, simple on paper, but not so easy in reality. And perhaps not really feasible.
Other methods, like balancing the car on 4 scales, weighing and measuring, tipping the car up, re-weighing and re-measuring, require that you have an intuitive grasp of the mathematics needed to complete the calculations. You might need to refer to a textbook on static analysis to get the answer right.
I used to work at a fabrication shop that built heavy lift equipment. We had to move some of this stuff around with bridge cranes and it was really useful to be able to guestimate where the CG was so you could safely hoist this stuff. I do remember one guy who didn't find the right answer: he hoisted up a 20' x 20' bridge deck welded of 1/2" plate and 18" I-beams. When it fell I was in the front office. It sounded like the fist God had punched the ground 10 yards away! I remember immediately praying, "Please, God, don't let anyone be dead." No one died, but a Miller wire welding rig was crushed about 3/8" flat under that deck.
Excellent work
Gobsmacked yet again! Thanks...
Pulling a loaded jack around your floor looks hard work
Hard work... Really!
@@jritchiejritchie2687 check out his floor , it's been screed really badly with lines across it.
@@Mercmad i
don't see it as hard work personally .
@@jritchiejritchie2687 After 12 hours graft , a rough floor anywhere can be a bugger to work on. been there and avoid it at my age.
Indeed.
all good stuff. love it. Well done.
Thanks that was good!
Just imagine if you were able to move as fast as you do in time lapse. You’d get loads done quickly! LOL
Great job! Thank you.
You could weld on a support stud on that jig for the hydraulic jack, that way it is easy to get the wheels on or off.. anyway, keep on fist slappin' 😎 excellent work! Any info about those shoes you are wearing? Cheers Martin
i was going to suggest some feet on the bottom of the cross tubes but i think your idea is better.
if you added a pin on the bottom of the jack point and remove the pad from the arm of the trolley jack, you could tow the rotisserie like a semi trailer. (where the trolley jack is the primemover)
i hope that explanation makes sense.
I will stick a link in the next vid. Cheers
Have you ever thought clapping your hands at the start. :-)
We´ve a change of plan... not enough material to do it like that. Love that one Matt. Dont´t know how often I had to say that the last two decades. Could make a nice sighn for edgy customers, shall we? LOL. Btw, good luck with the "guessing". Guess you can do that just like all the other excellent stuff you´ve been showing up to now.
Cheers
Doc
I'm going to build one of these out of wood for my suzuki cappuccino :)
9:01 suicidal segway! LOL!
Why not make castors that lock in the straight ahead posotion for winching but releasable for manouvering in the woekshop?
probably cost more
Martin Smith +1 - I was wondering the same thing! Matt - is the rotisserie a one-off, or will you re-use it on other builds?
Iv only seen ones that lock in position when the wheel brake is on as well
As for making them its alot of messing around for no real gain
One trip to the blasters for each project then the rest of the time its in the shop where itll not move mpre than 10ft
Prob be better without any wheels at all in the shop to be more stable and rigid
The lockable ones I have seen only stop the wheel rotating and don't actually lock it in position so they still swivel
@@hughjanus4371
More recently in my local hardware shops anyway
All the casters in the 20 to 200kg range have swivel lock as well
It has notches cut into the swivel base and when the wheel brake is applied it locked into the detend
Hello, what are the square profiles of the video, very good video, thanks
Hi there bud I do you think this would roll a full car I have a little SJ410 and need to do bit of welding underneath would make it easier
Cool stuff Matt
great as all ways you could have used swivel wheels and then drilled and pinned them remove as needed to move around thats just me but as always you do great work
Cant wait to c it go it will b rappid
Very nice.. May I ask? Is that a plasma cutter you use at 11:58 & 12:17 to cut the valleys for the sleeving tubes? Many thanks - Pete.
top job mate as per
Loving the vids man .
Matt,why not use a jockey wheel similar to one's used on trailers ,when in the shop?
Hi Matt enjoying the build. But can I make a suggestion on the actual filming of what you are doing. A lot of the footage is you welding stuff in time lapse, how would it be if instead of that you did for example building the roll cage from start to finish showing how it's set up prior to welding and merely have short time lapse asides. the actual work of measuring and fitting would then be more intuitive. Then you could release one vid per week that would have better more detailed content, would also be longer. Just a suggestion, if you think it's a bad idea just ignore me. Cheers. Neil.
I will do a roll cage series showing every step when I get the chance. Cheers
good gag with the clapping into :-) .
Is this the first video without the infamous “like a glove”?!?!
Hi. Could you tell me which model chop saw you're using. Cheers Buddy.
Want to build one for when I build my Jeep TJ
Hola soy de Ecuador me gustaría saber las medidas para fabricación Carme uno soy pintor automotriz
Thumbs up!