How to use Pressure Transducers for Troubleshooting

[@cojones8518]

*whips out clipboard *whips out Bureau of Standards Pub ASTM E2624-15 *adjusts glasses Well that's true Mr AVE that they use 2 inch fasteners and new grease between runs. That is the universal standard used to insure that all test use the same baseline to testicle different impact guns. IE 3/8, 1/2, 3/4, and 1 inch all use the same test bed for repeatability. * adjusts glasses

[@arduinoversusevil2025]

I looked everywhere and haven't found a "1100 lbs ft *tested per ASTM E2624-15" statement anywhere. Am I dumb or just ugly?

[@fpdiscopenguin]

AvE or missing a testicle

[@stevenyau2443]

rigidity, mass, size of fastener, moment of inertia, friction and some more factors play a huge role in impulse drivers. normal torque wrenches on the others hand only need to combat rigidity and friction maybe they just need to change the testing standards and publish a chart of different size(length and width) fasteners, type of steel and lubrication with achieved torque that at least will be a better reference

[@wunderkind56]

Yes. Real Tool Reviews doesn't say this the actual torque capability. He uses the Skidmore Wilhelm because that is what he thinks the industry uses to make their "nut busting" torque claims. I think he even has a video where he says "nut busting" torque is marketing BS. But he uses the same procedure for all wrenches so it is a valid benchmark for comparison purposes. At least AvE noticed RTR also gives dynamic results with the digital meter.

[@stevenyau2443]

Real Tool Reviews guy said he contacted one of the tool companies before and that's the bolt setup they use. so he didn't just assume

[@B.E.Long.63]

THIS GUY IS A WEALTH OF KNOWLEDGE, SEE WHAT READING AND STUDYING WILL PRODUCE... THIS GUY'S LITTLE GIRL IS GOING TO BE A GENIUS.....

[@arduinoversusevil2025]

True fact. The all caps prove it.

[@adams.6789]

On the internet CAPS LOCK is cruise control for cool.

[@petti78]

Saw it on the internetz, must be true!

[@DigitalKudzu]

Where as he is technical, she very well could be artistic. That's how I disappointed my Dad 😆

[@sharpeyedwatcher9724]

I have to agree with him. I am constantly in awe of you seemingly limitless knowledge combined with the sandpaper gruffness that would make a sailor beam with pride .

[@SouthMainAuto]

Great job and a good demonstration. We use pressure transducers all the time in Automotive Diagnostics. We use them in the tailpipe 4 exhaust pulse diagnosis , we'll use them in the spark plug hole for in cylinder testing , vacuum testing, fuel pressure, transmission Etc. It's nice to be able to see your pressure on a scope instead of just a gauge and log voltage over time.

[@NewLevelAuto]

South Main Auto Repair well , at least I liked ypur comment 😄

[@exmotorsports]

Haha..and I thought I was the only car tech guy that watched AvE (:

[@Leroys_Stuff]

I thought that only a few use these as auto techs

[@JeremyGreen42]

The live zero explanation is great. This is what makes the check engine light come on in your cars. It basically informs you that a sensor is reading out of its designed range.

[@JonathanOverholt]

This is my absolute-favorite kind of rant -- the kind where you clearly spend a bunch of your valuable time building up supporting data to make the case. This is what keeps me going as I'm stuck behind a desk all day instead of in the shop where I belong.

[@clarencecherrone7914]

In my opinion this is one of the best videos I've seen you post in a while. Using science to call out people's bullshit, excellent! Keep it coming Ave.

[@champ_2233]

Why all the vids in the wife's sewing room? Is she taking over the shop? And if so what does she keep in her vice?

[@StefanThePro]

yolo swag his stick if he keeps using her room...

[@psikogeek]

She keeps her (fresh) batteries in her vice.

[@cthompson658]

Might be getting too cluttered in the empire of dirt. Might smell better too. What for the excrement left over from the colostomy bags o juice, could be smelling up the shop by now.

[@keithjurena9319]

Zar Bin Tar : He drinks too much during BOLTR video shoots and has leftovers

[@davidmacpherson0]

Asking the real questions here

[@jakekuranko3996]

These are the videos I like watching. I'm pretty new to the industry and it's nice hearing things straight from a guy that has actually dealt with the stuff. Keep up the great videos

[@BradRaedel]

Also worth mentioning is the frequency response. The type of pressure transducer(s) shown, typically have a conditioning circuit and/or ASIC in the device to provide linearization/scaling (such as the 'live zero') and temperature compensation. This type of signal conditioning can lead to slower response times or a dampened output.

[@simonjohn113]

Man, I've struggled for years to understand how the wheatstone bridge works in the 3rd and 2nd class power eng books, and just counted myself lucky that I haven't gotten asked on the exams. Best explanation I've seen. Thanks bro

[@jesselloyd207]

I think this is one of AvE's best videos. Thumbs up!

[@aidencoder]

I have learnt more from watching these videos than I ever did at school. It appears that when those who *can*, teach ... it works.

[@sgt.lalemons3rd848]

I'm baffled by the amount of information I have learned thanks to your videos. THX AvE !!!!!!

[@notwutuc]

taking the wife's batteries...job security.

[@Smileypb01]

Yet, making sure the battery company has job security. Bringing balance back to the force.

[@siliquaesid703]

Twizler Skunk ROFLMFAO

[@TheChipmunk2008]

Liked in the first few seconds because of the really quite decent description of what a transducer is.

[@mapleleaf4ever]

Wicked! I love your videos like this. As an Aeromaplane Wrencher, it's these little tricks of troubleshooting that I find valuable as frig!

[@JohnDotBomb]

Really appreciate when you go over this stuff. I'm an engineering student, and we still have to figure most of this out ourselves. Anytime you want to make a video on a Lego brick, I appreciate it.

[@thebmwlifestyle2184]

and again I learn more from AvE than I ever did a engineering school.

[@billcosbyeatsbabies9947]

I have sold these before and never really knew what they were used for. Now I know! Thanks uncle bumble frig

[@dfw_motorrad1329]

While some of it has to do with marketing wank, it's mainly for repetition. It's a lot easier to polish the washers, use fresh grease and standardize the size than it is to repeat the same level of corrosion, the same thread galling, the same schmoo in the threads and all of those real-world variables. It does give a higher number, but mainly it gives a more consistent number to allow more accurate comparisons between different tools. Some marketing "geniuses" (not naming names here but they're Fraught of Horror) try to throw those numbers out there as if they were real-world numbers when it's really just meant to be a way to compare it to another brand. Your set-up is excellent and you're a genius to use a pressure transducer and an o-smell-oscope to see the actual pressure waves. I deal with these nearly every day for oil and boost pressure logging and it would have taken me a long time to think of using them in the way you just did. I think it would be interesting to see different types of harmonic balancers (and maybe imbalancers, if that's a thing) and see if the oil transducer picks up any spikes. G'day, sir.

[@kingofcastlechaos]

Remember "Thing" from Adam's Family? The first time I saw your videos my sound was muted, and it looked to me like one of Things descendants has themselves a killer KZbin channel. Fixed the sound and now I laugh my ass off regularly- but still think of this as the "Grandson of Thing" channel. Thanks for the knowledge- you're teaching old dogs new tricks.

[@Simon_Bahr450]

YESSS! we're on the road to the vidjeo I requested you to make a few months back! Can't wait for the addition of Arduino functionality!

[@thesmallestatom]

"overpaid guesswork" - love it

[@RobFeldkamp]

7:00 .. an overpressure valve pooping ;)?

[@RobFeldkamp]

popping*

[@tomstr21]

6:59 Did you just farted into your transducer? :o

[@LurifaxDK]

How in Gods name did I miss that the first time I watched it?

[@TroyBrophy]

I assumed I was the only one who caught that. What was I thinking?

[@binbashbuddy]

had to come up with pressure somehow for the testing

[@windsunh2o]

I thought it was because he was blowing so hard he squeezed one out! Had to pause the video I was laughing so hard.

[@mavos1211]

David Taylor me too! 😂 if he blew any harder I am sure his arse hole would have become a transducer!

[@adammontgomery7980]

Recently learned that guys will use these to read crankcase pressure along with cylinder 1 ignition to diagnose all kinds of engine trouble. Oscilloscopes are cool!

[@Sketch1994]

It's my semester exams and my first subject tomorrow is Automated Control Systems...Defining the Laplace transformation just didn't cut it for me and you saved the day! Thanks!

[@arduinoversusevil2025]

They have computers for that nowadays.

[@Sketch1994]

Yeah but I wouldn't stop reading from my books unless you made a video about it!

[@MrGenesis98]

Good vid, love how the previous vids of the Harbour Freight impact get brought back in to make a point.

[@jjjames5089]

I absolutely love the way you teach your hilarious but thorough.

[@BoffinGrusky]

Do they make a transducer that converts flatulence pressure into beautiful music?

[@kf7tkj]

I like the idea of a series on lego parts of industry !

[@joefriday1982]

I appreciate how you used a teaching video to prove that you were right on an otherwise loosely-related topic. 😀

[@TvshkaHumma]

I'm so glad I discovered your channel, besides being very entertaining and funny as hell!, you also teach me quite a bit and I greatly appreciate that!.

[@Skraap]

But Uncle, his reviews are real - they say so right in the title! Good to see you having fun with some good olø Danish quality in those Danfoss transducers.

[@ddcp101010]

Your language reminds me if my German colleagues. I enjoyed your vid. Thanks.

[@jason-ge5nr]

Hats off to you for sorting that all out

[@sapperjohn256]

awesome vid, I'd love to see you do more with transducers. I work for Cummins as a technician, and our procedure to determine how much compression an engine has isn't a compression test, but measuring blowby with a manometer. I want to build something with a pressure transducer that can measure crankcase pressure, and sync it with an engine position sensor on my oscilloscope to attempt to pinpoint bad cylinders rather than condemning a whole engine, which is what usually happens with the general blowby tests. There's a pressure spec for blow by, but there's also a flow spec. Maybe I could use two transducers across an orifice and calculate flow? I'd love to have a little aluminum project box that displayed pressure and flow but I can't figure out the Arduino code or math. Any help would be greatly appreciated.

[@IgmuHammerer]

Strain gauges running on a balanced dc offset inside a complicated bridge similar to a Wheatstone. They usually also have temperature compensating resistors to maintain consistency as well as modulus balancer resistor(s) to keep that dc offset.

[@Mega98RP]

You also have to take into acount that the resistive element could be logaritmic and not linear, that whould change the calculations. Connect it into the osciloscope and do a 0 to 600psi sample, save and print the curve with values. That would be you reference chart on the field.

[@mr.skidish5777]

I think since it is piezoelectric it should be linear

[@Mega98RP]

Mr.Skidish oh, yes, my bad. Forgot it was a piezoresistive element...

[@tussery]

These things are really everywhere. More and more gas stations are starting to utilize pressure transducers for line leak detection. Like stated they rarely do go bad and normally the pigtail and connectors go long before the actual transducer goes out. If you get your hands on one you should do a year down on a mechanical leak detector for people.

[@kenhutchens513]

I love your channel and work brother some of the best lessons I have learned in electronics and home shop dickery I got from you. Hell you, Keith Fenner, Abom79, and John Mills (Doubleboost) have shown me so much as well as This Old Tony and a little bit of Stefan Gottenswinter. Your and Keith's influence helped talk my better half into letting me get a mini lathe, tooling, and other equipment for my shop and house much love and many thanks.

[@dbayboyds409]

Wow! So much cool lego! Loving the learning AvE!

[@RedneckTech]

I'm an etech in the oil and gas industry. we run 20000psi transducers on 4-20 ma scale. gotta love the live zero for quick glances!

[@spagamoto]

You can actually hook those transducers up to a computer mic/line input if you don't have a scope (use a resistor divider and/or potentiometer to bring the voltage down so you don't saturate the line input). If you're not interested in absolute magnitude it works a treat. I used this technique to accurately measure the RPMs of a mechanism (sound cards have a pretty good timebase) and to look for valve sealing problems in an engine. You can also use a cheap audio recorder to take samples in the field for later analysis on a computer. Just make sure it's recording lossless.

[@sirtnfol8476]

havent commented in a while but im still here. been busy with the company take over and 40% pay raise so im all business lately. need more boltr's

[@MichaelSteeves]

In industry pressure transducers/transmitters usually (at least pre-digital systems) used 4-20 mA. This allowed using only 2 wires to the device which would compensate for lead length. I've got half a dozen on my shelf that are worth $10k each that can't be used because we did major environmental testing on them.

[@gunfuego]

edutainment at it's finest, AvE keep on Rocken man your vjayos are like sweet molasses in a bitter world :)

[@DarkMessiahChronos]

I may or may not have half a dozen 'used good' transducers or regulators in my toolbox at work. I need to set this up!

[@TioDave]

I installed some tactile transducers on my pedicab to synthesize a sub woofer. It saves a bit of weight and doesn't make much noise.

[@arduinoversusevil2025]

Pedicab? People grinding on your gnarly ass feet while whisking you to your spray tan appointment?

[@TioDave]

I'm still waiting to obtain my spray tan patch. I mostly pedal in tourist going to the events, eating and drinking around downtown. If you are ever in Austin, TX I'll take you for a spin.

[@arduinoversusevil2025]

I don't go for strangers touching my feet. Also, having a fellow human haul my bloated hung over carcass makes me feel awkward. Well, more awkward.

[@TioDave]

When the Texas sun zaps all the energy out from you. You will forget your body image issues and get in. If only to feel the breeze over your sweaty over oxygenated carcass. Then you will see why I call it my three wheeled street roller coaster.

[@eoghanholland1045]

good flow in the rant there. a bit of self checking then up a notch for the conclusion. the synaptic harmonics of the system.

[@ACA332]

Pressure transducers, decomissioned PLCs, entire functioning building alarm systems that were meant for the bin. My parts hoard grows and grows. You never know, I might need to install an entirely dedicated alarm system with card access, electric door strikes and a door intercom in my garage.

[@ubuntupokemoninc]

I have actually used sockets almost that big. swapping castings from old boilers too new, because the castings contour the round boiler shell the only way to get them off is is to cut the studs off flush with the boiler. a good way to do this is to use an impact to twist the stud right off. they usually shear off right at the boiler.

[@sickboymech92]

Love the rant, now I am going to the shop to do the same, however with a lot more emphasis on sailors slurs.

[@R1pperB]

12:55 the hydraulic transducer's signal does actually have ripples around 40ms apart. Also, this looks like power-line noise (50/60Hz), usually coming from poorly designed switch-mode PSUs' of other devices.

[@sdp8483]

I use pressure transducers at work for development testing. If you want to data log for longer then the oscope get a Dataq data logger. They have $60 options at about 40kHz and are super easy to use.

[@ForgedEggs]

Thanks for this, I'll be using some pressure transducers for data logging in my turbo engine build.

[@patterguitsit7124]

This is exactly the mad sorcery hacking that I love from this channel. Thanx

[@RagingOatmeal]

those things are like flame rods/sensors in gas fired equipment. turns a direct flame into a dc signal using flame ionization. then you measure it using microamp reading. most residential and commercial are around 2-4micro amps

[@TakenTooSeriously]

We made a wheatstone bridge into a digital thermometer in an electronics class I took. They're super useful for such a simple thing.

[@emj1989]

gotta love a scope I use them to diagnose bad fuel pumps all the time. kinda interested if I can adapt this into making a compression tester for my scope

[@pjbth]

Dr Richard Head might be the best thing I've ever heard.

[@joppepeelen]

Hmm could the pitch of a smaller bolt maybe get more tension :? since the pitch is smaller usually that results in more torque ? although the thing can twitch but what if you used the same thickness rod with the smallest pitch possible ? as long as it wont strip.

[@StoneysWorkshop]

I maintain sterilizers (autoclaves) , and they use pressure transducers, so i look forward to this video.

[@danaskovsende8864]

I know nothing, I am the ”wrong” kind of engineer, but this what I would have done. I would have taken a torsion bar, fixed one end in the vice, attached the gun to the other end (maybe stabilized the rig with a bearing) and measured how many degree the gun can twist the bar. The measuring of angle can be done with a mirror glues to the bar and a laser pointed at the mirror. Following the dot (in the ceiling) and simple trigonometry should give the maximum angle. Love the videos!

[@a7i20ci7y]

We use these transducers all over town to measure pressure at points of our water distribution system. We have to replace them often.

[@rendarchannel]

This video reminded me of all the "new old stock" pressure transmitters and RTDs and other parts I've got squirreled away in case the warehouse is out of stock, even though it never is.....

[@pacificnorthrust]

Ave please do a video on stepless drill bits and step bits.

[@JustinCrediblename]

does the input voltage proportionally affect the output voltage? so if your voltage applied was 27 volts then you'd have calculated 15 psi?

[@JustinCrediblename]

hmmm I'm gonna copy and paste here... What say you, AvE? www.tabertransducer.com/transducer-inputoutput Millivolt (mV) Output - Pressure transducers with millivolt output are generally the most economical pressure transducers. They are often called "low-level" transducers because they are unamplified and only contain passive electronics necessary to develop and thermally compensate the low electrical output of the Wheatstone bridge. This also means they tend to be smaller and lighter than voltage or current output transducers. The Full Scale Output (FSO) of a Taber millivolt transducer is typically 30mV, with 10VDC nominal excitation. This is also expressed as an output of 3mV/V, 30mV FSO with 10VDC excitation, or as an output of 3mV per Volt of excitation. Optional FSO range is 0-20mV. *The actual output of these instruments is directly proportional, or ratiometric, to the excitation voltage. This means that if the excitation fluctuates, the output will change proportionally. As a result of this dependence on a steady excitation voltage, regulated power supplies are highly recommended.*

[@Jsu0234m]

No, as long as the input voltage is between the range on the sensor, the output will still be right, plus or minus the tolerance on the sensor.

[@foogoid8682]

That page lists 3 output types: Millivolt (mV)Volt (VDC)Current (4-20mA)Your description is for the mV type, wheras the video shows the VDC type.Quote: "Because the output of this transducer is not a direct function of excitation an unregulated power supply is sufficient, provided that it falls within a specified power range."

[@droy333]

Same deal as a load cell for industrial weighing of carcasses. Turning gravity into different amounts of angry pixies. The most I remember from those days is having to check the load cells for accuracy by manually moving 300 kg of weights on and off the scales 20kg at a time for the most part.

[@slbuwk]

I have learned more from you and your kunuckee ramblings than I ever did in enginerd school

[@geraldgepes]

I've gotta say man, this video got the blood pumping! Somewhere between the awesome use of scabbed equipment and sticking it to the fuck heads who make tools, hits you right in the feels man. It honestly fucking sucks that there's so little honesty in tools, things we depend on with out livelihood and in emergencies, our lives. As of late I've had a huge respect for German and Swiss measuring tools and hand tools because you know damn well they're going to hold up like crazy and you don't have to fucking question anything. As for power tools and pneumatics, I'm going to hold off buying any for a few years because this channel of yours is having an impact on quality in a great way. Just waiting to see the tools of the future.

[@brainwashingdetergent4322]

Question!!! I've always been vexed on why a ducer reads higher pre check valve (flapper style) than post!!! We're dealing with 8-9k psi at 2,500 to 3,000 gpm, and pre is always (no matter what) several hundred psi more than post! These ducers are regularly calibrated and replaced as needed!

[@justinmolina4557]

What you also have to remember the pitch of the bolts are different. If you where to unwrap the threads and lay them out the larger bolts would have longer threads. A bolt is just a helical wedge. So the longer the threads the less aggressive the wedge angle there by giving you better leverage to creat more clamping force with minimal effort.

[@NickMoore]

My beard is red not grey. I do have a pile of "good-old stock" accumulating in my tool box though.

[@arduinoversusevil2025]

Hey, I'm stealing your high speed impact wrench filming idea and some of your footage for a shout out. Not that you can do anything about it, but thought it'd be more polite this way.

[@NickMoore]

No worries, if you give me an hour I can shoot some HD slow-mo of the same unit. I still have the thing hanging around just as a "you'll never believe this."

[@arduinoversusevil2025]

I'm good, I'm filming in potato vision. Gotta keep the rent down low, expectations and so forth.

[@LucasGarrow]

Nick, brace yourself for subs!

[@NickMoore]

Might have to check your spam filter, I left a comment with a link for ya.

[@moerush04]

piezoelectric is quartz if I am not mistaken. If I'm right, it's the same thing in your grill and fireplace ignitors. Super cool stuff.

[@billrussell7672]

thank you for calling us hoarders, "Grey Beards" made me tear up to be appreciated

[@arduinoversusevil2025]

Hahahaha. I know who to ask for Whitworth grubscrews and replacement Lucas Smoke.

[@billrussell7672]

I had to borrow the wentworth wrenches and fittings to work on the double deck busses but I did know that son of a englishman who horded them tools in california and the brakes on the double deck busses is a patreon vid , I promise its amazing engineering, accumulators , drive shaft between engine and transmission and the shock springs are H-E-U-G-E you need those on your canuckian battle bot

[@robinturner2300]

AvE I once went into a tool shop and asked for whitworth spanners...the cocky little twat behind the counter said "no mate we only do metric or imperial..." WTF Did he think whitworth ones were then if not imperial? I've seen Lucas Smoke too ... Starter motor that caught fire...

[@carlosfelix4057]

Did you account for the 14.7psi that is sea level pressure? That might account for the difference in what live zero and what is registered.

[@Butters_Stunts]

I guess you could say it's the piezo de resistance

[@gordonlawrence3537]

The torque kit I worked on had various zero points depending on customer requirements (depending on reversible and non-reversible for example). So this may be true for off the shelf pressure transducers but not for all transducer types. pH transducers calibrated with water and calibrating acid (hydrochloric at a pH of 1) are really weird and drift all over the place without being in contact with an ionic liquid (unless they contain buffer solution in which case they sit at mid-point).

[@chrispalombo6394]

Love how he teaches! I learn a ton.

[@dietryingracingteam]

is this how engin/motor dynos should/do work?

[@enescakr4203]

7:00 I wonder how you build up pressure on that thing

[@saipramod3459]

Hello, thanks for the video. I am trying to calibrate Omega PX-319 pressure transducer with omega's wireless voltage data logger. I am not able to figure out a way to do so. Kindly help me with this.

[@sstorholm]

Please do the mA transducers ASAP, I've learnt to work with them by trial and error but I've always felt like there's something that I'm missing!

[@icebergmike27]

good Lord this video was badass going to have to watch it again

[@thomasbland6428]

Would using a zener diode or a voltage regulator be necessary to provide a constant reference voltage level from your battery supplies? Would that effect the accuracy of the results?

[@MobiusHorizons]

For arduino take a look at the ams1115 it's a 16 bit i2c based a2d. good enough for some medium speed data logging, cheaper than dirt, and easier to use than SPI ones.

[@andy.denenberg8961]

is there any way, that you know of to use something like the transducer to INJECT a signal into a closed pressure system. I am trying to use the device to find pinhole leaks in refrigerant circuits

[@mr.bobcyndaquil4214]

Would it be better to rate impact guns by their air flow?

[@kaabumees1]

hay. what do you think about those stanley grinders and that company overall. their tool line.

[@michahensen6085]

Hey AVE what would be your suggestion for a book for someone, who is studying mechanical engineering and would like to learn more awesome tricks like these?

[@matthewsykes4814]

Most industry stuff (production line stuff) isn't very high pressure, the crap I work on only goes up to 6psi as they don't need much more than that. True the robots main actuators are running higher but that's on a built in pump and accumulator setup instead of the factory main line

[@jeffreylewis145]

PSIG vs PSIA. I built an arduino tire inflator wherein I had to add some calibration math until I realized I was getting PSIA from the transducer. My primary target is giant tractor tires from 9 psi to 14 psi so I had to settle on STP

[@coilsmoke2286]

That 5 PSI. lung power is just about right !

[@BerndFelsche]

Except for blow-hards

[@KowboyUSA]

Any idea what the transducers in the plumbing section of a local hardware store are for? I has the feller who does plumbing and he told me "Gary knows, but he retired."

[@redsquirrelftw]

Hmmm would be cool to hook one of these up to the water supply and monitor water pressure. If pressure is too low for too long it could mean a leak and could set off an alarm. If you want to get fancy you also have flow sensors at the end of each water source so if any indicate flow it's definitely a leak. That would be pretty skookum.

[@morgansky1]

Are these used for long term logging? That would be pretty handy

[@fnmatrix]

I've messed with Utility Transducers. Single or 3 phase in, DC out (usually 0-1mA or 4-20mA). WATT and VAR Transducers are interesting. Some allow for reverse power.

[@waderedsox]

I grant you all those points, but that being said, as long as all the guns are tested in the same way, isntnthe one that shows the higher torque still going to be able to do a better job busting that fucking rusted honda crank bolt off? and wouldn't it be rather difficult to come up with a test to consistently test those sort of circumstances? another thought, could that breaker bar you have leaning against the bench be flexing and absorbing some of the impulses too? that might help explain the gap between your results and those they get on the "professional" testers along with the other things you mentioned. Fantastic video as always

[@PhaseP1]

The specs are "Max Torque", meaning the maximum torque you can achieve from that particular impact gun. Then using the best setup so that the gun can tighten (or loosen) a bolt to its best ability should be used to test the max torque spec. So I agree, it is less ambiguous and good way to compare impact guns. The so called "dynamic" torque test of skidmore is ambiguous. For once, even though the name sounds like it is going to give the instantaneous highest torque value of the impact impulses, it is actually giving an averaged value. And they don't tell what is inside, what kind of averaging they are using to come up with the resulting "dynamic" torque value it measures. That is less useful because you actually don't know what the conditions and the exact method (averaging but how?) used for the spec it gives.

[@peterhansen8216]

Is the voltage output linear?