Nice to have few things done, but 15min video is enough I think, otherwise it's lots of work for you to make the content for a long video and either long time between videos or too much work. Thanks for sharing it all though, whichever way suits you better. Merry Christmas 😊🥳
Obviously there’s some good engineering suggestions in the comments. That said I really like what you are doing, your approach, design and building is quite methodical. Excellent work👍 I won’t miss an episode!
Be careful there is a slight chance the water pump could get air bound at an angle. I’d mount the pump with the pulley facing inward and run a jack shaft. This is just a friendly suggestion. I’m not trying to tell you what to do or seem rude. I love how you make things all from scratch. You’re a talented fabricator.
You are hands down the best fabrication guy on you tube you do more with less and have a great way of figuring things out thanks for this and all your videos!
Scrap that exhaust and just build a straight pipe instead. You will most likely just mess up the performance by making it that short. A 2 stroke exhaust works like a resonator and both sucks the air out of the cylinder and then pushes back just before the exhaust port closes when it's in the powerband and that's why you have to tune it to get it to work properly with the engine setup and the revrange you want the powerband. A shorter pipe increase the revs for the powerband as the return pulse comes back much faster. Gokarts have short pipes and very high revs to begin with and a 125cc could rev up to +16krpm which is at the limit of what the materials can handle, and you just shortened that pipe by a lot so even if it would work you might be looking at revs of 30krpm.
brilliant mind and skill-set. dang son i love watching your videos. everytime i see your washing machine lathe machine i always smile like crazy. 👌🏼💯🧠👏🏼🙌🏼
Agree to some degree. ATV's for example the old school Honda 250R that we're all to familiar with has this same type of setup. I guess it really depends on the axle material.
Was hoping for v tread tractor tires out back and ribbed steer tires on front for the tractor theme but quad racing tires look good too... Great work,waiting for next install...
Ik zou de uitlaat zo maken dat hij als een echte trekker langs de motorkap loopt, de roll cage zou ik ook een rebuild op doen hij is namelijk erg groot vergeleken met de rest van het frame. De demper zou ik ook vervangen voor een kleinere. Verder wel een enorm vet project
If you look at older 2 stroke engines they didn’t have expansion chambers. Many years ago I built a shifter cart “before it was cool” and it was a Suzuki T250 twin 6spd, it ran great with no chamber, just chopped off factory pipes into a home brew muffler. Good job on your build. P.S. I bent the 1” axle all the time ! Just straightened back when I bent it. All Good 👍 👍
Your one exceptional engineer this looks like one of the most compact/hp ratio I've ever seen and i love it.... still I worked in fab company's welding my whole life 20 years now and I wish i wore a mask grinding.... grinder dust is the worst lol I'm still like you no gloves unless its aluminum obviously... love the project your one amazing dude!
the expansion chamber of the exhaust of a 2 stroke is a really tricky on. you cut of a fairly lengthy part of the exhaust pipe, that could result in some really weird enigine characteristics (like not running good im certain rpm ranges). on the other hand, i dont think you can do it any better than you did, just make sure to wrap the exhaust with some insulation tape (there are special ones for exhausts) and cover the underside of your seat with some heat reflecting tape too.
And the extremely long (and narrow) tailpipe will also be a problem. Predicting melting pistons.... A wrap around (dirtbike-style) or side exhaust would be much better
when you were born, I think your dad put a drill in one hand and a Angle grinder in the other. 😂😂. man you can make anything, I want to see a flying vehicle.
Man this thing is going to be one pretty amazing build for sure... can't wait to see the next video... certainly one of the better builds out there and I just love the way it looks plus it's a 2 stroke so bonus points for sure
Man, I love your skills but that exhaust breaks my heart. A 2 Stroke exhaust resonates with the engine and it is not just defined by thickness. If you need to change the form of a 2 Stroke exhaust you can easily make it by cut & turn so you loose nearly nothing of its function as those exhausts work straight and bent exacly the same if the middle length is the same. Be also careful about the stinger (the pipe from the corpus to the silencer). The Length of the stinger does not really matter but the diameter does! A decreased inner diameter of the Stinger leads to more thermal stress in the motor and causes overheating. Keep up the good work!
Awesome build. The only problem i see is the pipe for the engine is now far too short. Pipe length on a 2 stroke is critical. Shape too but length determines where it makes power
Very nice build! By cutting the expansionchamber you moved the resonance rpm quiet a bit. Now the cylinder cant work in harmony with the pipe anymore and you won`t archieve the the 40hp with that. According to the time you need to spend for fixing that issue I would finish the tractor first and make a test drive, after that you could decide whther the remaining power is enough or you want to get the full power back.
As written by some, i calculated roughly and your rear axle will bend after the first jumps or fast corners and break in the long term. The bearings should be mounted so close to the wheels as they could. Or use something bigger than 40mm for this wide axle.
Im no engineer, but theoretically could you make like some struts kinda that come off the main frame of the build that house the axle and then at the end attach the bearings?
that rear axle is still gonna fold up the first jump u hit I worked n fabrication for 61/2 years u need to come off the swingarm with some kind of brace that stops about an inch from each hub the build is cool you will Have pressure from the front top and bottom good luck
I like it, this is something that for sure crossed my mind while watching the grind hard plumbing co video's. Allthough I see some area's that could use some more love, overall a very nice job!
Video editing idea: To have a better audio, you can turn down the volume of operating grinder parts while editing. Other than that, I like your artistic work, looking forward to next episode :D
Was that pump driven by same size pulley on the axle? Or did you factor the gearing so that at top speed the axle gearing matches the crank max rpm gearing? Mustn't run the pump too fast but too slow won't give proper cooling also of course. Trust you will figure this out, love this build!
Who doesn't love an insanely inventive dutchman?!!! Erg mooi projek man (sorry I'm not dutch)!! Subscribed Edit: I have some cool solutions for your back axle strengthening btw 😊
This thing is coming along! I’m interested in the stainless steel stick welding aluminium is it? You should do a detailed video on it I’d be keen to see how well it works..
The length of the expansion chamber is really important and is what determines the rpm range of power, like a 1cm change is causing big differences. I think you cut it way to short and won't make any power at this rpm, you are basically losing all the avantages of having an expension chamber. There's almost no penaltys to make weird forms, you ça loop it to get more length, like on most 2t motorcycle, the exhaust is looping right at the output.
Awesome looking exhaust. Shortening it will just give more torque and lower power band, so less bhp max but better use for the weight of the tractor! But is there clearance under the expansion chamber for the suspension travel, looks very close in the video. And maybe need a bump stop on the swingarm to stop it crushing the exhaust also?
@@panzerole0132 yes sorry, I realised that thinking about it this afternoon and didn't reply. Shorter is higher rpm power. But it should not be terrible, I don't think the can was shortened too much, it is a surprisingly large volume already.
I think the rear axle would benefit from a good bit of reinforcement with some more bearing holders close to the wheels. I'm also a little concerned about overheating as the radiator is mostly covered at the moment. Other than those little challenges, excellent work!
