We dyno test a modified 212cc predator and the results are amazing 

This is awesome. I’ve been following since the beginning. We’d love to see the street legal “go cart” at Cars and Coffee in Wichita. Next Saturday is the first event of the year.

Very cool! We designed small engine dynos my 2nd year of Mechanical Engineering classes. Our group used a recirculating hydraulic pump and motor setup to eliminate brake pad wear. We varied flow restriction and measured the hydraulic pressure to determine power.

Any plans to try the new 459cc Predator? It has an oil pump! Oil cooler anyone? Maybe a turbo? :D

Very cool dyno explanation. I can't wait to see what kind of "vehicle" the 212 ends up in!

Thanks, I was wondering how your dyno worked, good stuff 👍. Years ago when I was teaching small engines I rigged up an electric dyno using ammeters, voltmetes, and oven elements for resistance. I'm sure it wasn't very accurate but it gave the students some idea as to the changes in horsepower with different modes. This was before computers, and I didn't have your level of ingenuity. 👍

Just found this channel. Nice job. Well explained. Your simple dyno is a thing of beauty

It's interesting how you optimized the layout of the video to reach as many people as possible by putting the results at the beginning and the more "tech" stuff at the end for those really interested. Great video I love your content! :)

Those dyno numbers truly show that tuning is not just about swapping or adding parts, but rather how said parts work together.

The little ones are back too. Keep it up.

Great explanation! I knew the theory behind how a dyno works, but it's another thing to see a practical implementation with a thorough explanation of how all the parts work together. Fascinating!

I've been jetting single cylinder, 4 stroke dirtbikes in the 250-650cc range quite some time. In my experience event a small de-restriction of the exhaust system requires a re-jetting to become efficient. So your assumption seems valid.

This channel is sooo great. I had the idea to make a small engine dyno like that a while back but I figured I was missing a detail that I couldn't reproduce at home. Turns out, its just like I thought, though you did it way more professionally than I would have

Loved the dyno explanation at the end. I wish more channels showed how things work!

less go im early im sad to see you leave Michigan but rooting for your project bud

Looks like those little buggers hitched a ride! 😆

Hey, the gnomes caught up with you Jim. There goes the neiberhood for the better with things blowing up as they keep stealing the go kart and now go out and tip clans and get drunk.... Thanks for showing off the dyno. Very cool to have it explained what you did and how. Need to take this to a autocross or a drag strip to get reactions from people in a video now also since you moving up in the world to the middle of nowhere.

PHD... 🤣 I'm so using this dad joke at the earliest opportunity.

Glad your back! I've watched from the beginning. Thks!

You are an absolute GENIUS. I enjoy your videos so much. The editing, the content, the music. They are a real pleasure to watch. I subscribed recently when I saw one of the Saturn S Series videos. I cannot believe you don't have more subscribers!

As always: thank you for sharing this epic journey. Funny, smart, entaining, clever, odd, different. But wait... Those little guys looks horribly very much like the infamous Garden Troll Gnome Gang thieves from the deep woods of Norway. Better watch out for those... How the heck did they end up in Kansas??

I somehow missed your last upload, but now im twice as happy being able to watch two back to back!

That was interesting, I really didn't know how a dyno worked, but honestly the way you explained it made it make sense!

2:21 I like how you put beavis uh uh voices

Funny that the dyno is almost a «oh btw here's the rudimentary dyno I made». Its goddamn awesome

So glad you’re back!!!

Loosen the front converter clutch springs LESS whined up time and lower rpm engagement. Tighter springs up front more whined up for higher rpm engagement.

Nice episode Jimbo! You really go deep on your explanations. Thanks!

The gnomes got a ride! Yahooo! 🙌🏼👏🏼

please note that aluminium connecting rods have a set shelf life steel rods have the ability to last forver technically but aluminums fatigue strength decreases this will be fine for many many years to come just look out love these videos sort of thing i love making the smallest thing go fast

So glad to have you back. I was pleasantly surprised to see a new video this morning I got used the wait. Keep ‘em coming and stay safe bro.

Glad you came back

I don’t think you have ever made a disappointing episode. As always keep up the good work 👍

WOW puts a new spin on "Mad Scientist Laboratory" great share - looking forward to the next reveal.

Very well setup dyno man... keep up the clever work and cool content, thank you!

Splendid dyno. Love the way you apply the load. Pragmatism is your strong suit sir. Keep on keepin’ on.

so glad your back!! watched the last episode as soon as it came out. glad you had a safe trip!!

very cool little dyno you whipped up. decades ago a buddy built a Datsun 1200 fastback on a diet (all dumb weight possible was removed), the A-12 engine replaced with a built A-15. very quick little beast when it was done, I don't know how it'd compare to the Honda you're playing with regarding weight, both are unibody tuna cans.

Thanks for showing the dyno. Also a big thanks for mot using the _ _ _ _ metric system.

Yeeeeeeeeeeeeeeeeeey this is sooo awesome 👏 thanks and the last moments just topped it.

Just re-watched the end of season 1. The production value is getting much better. I like more funny bits, though. Just a little constructive criticism. Please don't sick a gnome on me!

Very interesting. Great video.

More content please! Loving your content from Egypt.

Happy you're back! Been following along since the beginning. Just wanted to chime in and say I really enjoyed the breakdown and calibration of the dyno itself. Nice level of detail.

You could use a large alternator, with a adjustable power supply on the brushes to regulate the load, and short the output through a lot ohm resistor, like a few 12v heating coils in water, with a TQ arm on the engine, or alternator, but it is more complex, but ... Nice work

That's a really neat setup! Hope that the garden gnomes had a great vacation.

Thanks for taking time to make us an video

Great stuff! Just found your channel by accident. Loved the supercharged 459 story. Your garage is pretty much a power lab - impressive. Perhaps you could turn your attention to running these conversions on alternative fuels as these are around the corner for sure. When I 1st started @ work we were researching H2 storage (early 80's). We had a small side valve engine running on H2 (bottle) driving car alternator & battery, just to demo the idea of H2 as a fuel. Mistake.The chairman came round to see what we were up to. Hot summer day - 3 or 4 test starts (to be sure) - no problem....... Failed to start when required after much pulling on the starter cord by sweaty technician. It had got hot from tests & ambient temp and the mixture in the propane jetted carbide (already lean for H2) just wouldn't fire in hot carb-engine. He left immediately but as he got to the corner of the main building the H2 collecting in the exhaust ducting outside the lab fired & blew the lot into the carpark....they shut us down the following year & we moved onto batteries & EVs - too early in that too! Keep doing crazy stuff please.

This is cool. Now im interested to see the difference torque converter makes to the torque curve.

I love the email at 2:13

Those gnomes knew your new address before you did!

When Gnomes Go Bad 2: Revenge Of The Gnomes. They found you 😀Thanks for the interesting video, your dyno setup is very neat indeed. The amount of effort you have invested in what may seem to some as a frivolous exercise is very impressive!

I just love your videos. Great ingenuity! You do great work! 👍🏼

Happy to see you back! Lets see this channel hit a 100k!

Glad to see you are back

Fantastic episode! I watched it twice. Can't get enough of Robot Cantina. Does anyone else whistle the theme song all day long?

I extrapolated those horsepower and torque results to a 2.3L volvo engine from the 80's, that's be 160 horsepower and 170 torques. Out of the factory, it was 136 torques and 114 horsepowers. Those are big numbers, hot damn.

It would be neat to have digital control of the brake so you could hold quasi constant load to help with tuning

More please. More dyno please.

So wonderful! Thank you with all of my heart, and since your work is of such good quality, the metric crowd forgives you. Just this time though;). Be well. Alicia from Sweden.

Very nice, and I'm seconding about the 459cc. Don't worry, Jimbo, most of us in the audience only have one kind of PhD, and that's Projects half Done!

I've always known you can power anything with the right gearing clutches a torque converter to ge rims high e nough to have enough torque to engage . love the dyno

Wow. Rather brilliant!

Please consider putting steel between you and the motor. That plywood won't stop shrapnel from a blow up like a flywheel loss. More likely send splinters into you. I would recommend 1/4 inch at least. Other than that, great video on the dyno. Never thought of that and it is a great idea for small engine testing.

I was laughing my ass off at the post hole digger joke. You've earned the sub.

Hp, rpm are the same in metric, altho Hp is sometimes replaced by KW but Hp is a higher number so everybody use it. For torque we use Nm

I'd love to see you put the hot predator 212 in a road legal motorcycle of some variety. maybe something streetbike adjacent? With valve springs and that billet flywheel, those things rev REALLY high. Does Cars&Cameras know about your channel?

One of the problems with small, high revving engines is internal friction relative to rpm. If you have 20 units of internal friction at 2000rpm, you will have 80 units of friction at 4000rpm. Yes, high rpm makes more power for any given size engine, but the price is fuel efficiency decreases as the parasitic drag of internal friction jumps dramatically. Rolls Royce figured this out in the 1930's building the aircraft racing engines along other cool things, like smaller piston bores are more prone to detonation than larger bores. By the 1940's companies like Curtiss Wright, Pratt and Whitney had extremely precises math on the energy losses going out by every pathway from an engine.

Is WD-40 also good if you have a ex that needs brake work in the mountain switchbacks?

In Europe we also use Horsepower and sometimes Kilowatts.

Great vid once again, bud! Loved the Dyno setup and explanation especially!! 😎

I was always rooting for that 212. Thanks for the update.

Love the mouse pad!

Lovely rig, maybe you could do a video going full instead depth about the dyno, also polycarbonate window would be sweet for the dyno as you’d be able to do visual inspections at the same time

The got a 224cc max performance and 212 ghost that you can get now lol not to mention the 301 and 420, and the 670 vtwin if you wanna get crazy 😂

I still say you should bring this thing up to the car show in St.Ignace. I would love to check it out in person.

Flywheel fans don't work without a shroud and engine housing to direct the flow of air around the fins. Without the housing, the fan is useless and would make it the engine work harder to move air.

Interesting and amusing update. Always a pleasure to watch your videos :-)

love the vids, really ^^ greetings from Germany Jimbo

You guys are frigging awesome !

You should upgrade the transmission on your street legal go-kart.

I hope you compound a turbo and a twin screw somewhere down the road. The twin screw effectively bumps your displacement up so you can actually spin a small turbo and get some efficient work out of it

Fantastic work :)

AMAZING instructional video!! Thanks!!

So those bastards did follow you out to Kansas, ha. Love that prony Dino. Always wondered if there was such a homebrew thing. Speaking of brew, love your reference in the beginning to a certain RU-vidr over in Tennessee. Perfect!

You guys are very good

Jimbo succeeds where most others fail, he makes learning fun

The gnomes are cute. Some of this goes over my head, but I really like the delivery. Keep up the good work!

Haha, 'freedumb units'. Try banana / quid. Love this channel, it always makes me laugh.

You handle pressure extremely well Jimbo. 😄

Nice description of the dyno. Will the gnomes be wreaking havoc on our favorite go kart? Now.....let's talk future power options! Drum roll please......😁

Take the crank from the 212cc install on the 420.short stroke big piston.u will make horsepower.Use all the good parts too

Great stuff! Yep those Amazon carbs and intakes are cheap and it shows. My VM22 had a pilot jet big enough to drive a semi truck thru!

Love your channel it's gold

FUNNY THING IS THE FREEDOM UNITS ARE ACTUALLY BASED ON METRIC LENGTHS AND WEIGHTS!!! its like metric with an extra step

The funny thing about the freedom units, is that back in the old days Canadian racing video games used imperial units instead of metrics because they only made one version for both USA and Canada. So I am more used to horsepower than kilowatt as engine power measure.

I feel like you and AvE would be good friends

Came for the engine, stayed for the Dyno

I knew the Gnomes would find you!!!

Very good videos. Kind of hard to believe you didn't put a brace/bracket/support on that carburetor hanging off of that vibrating ass engine. Just ask anyone that's ever owned an old Harley. I think you inaccurately blamed the intake because the result you got was inevitable. Still you're doing good keep up the good work.

Have some more pressure, subscribed. :D