Robin Hood vs nobody, as nobody is going to challenge your engine building skills. Man, if you designed and built that yourself you are a very talented guy. Seems like a lot of guys take lawn mower engines and rig them to a bike, no big deal. But that engine is a WORK OF ART, and I don't think many will disagree with me.

thank you for not putting some crap music over the video I get so tired of lame music overlays, great motor congratulations on the build.

God bless you, and He obviously blessed you with a n outstanding mechanical vision and the hands to make it work. Brilliant, simply brilliant!!! I love it all!!!! That is by far the coolest bike engine I've heard. Really digging on the build!!!! You should teach people how to build these, and who knows what other fantastic ideas are in your head and the people you inspire? I am loving the positivity of your video, too!!! Keep up the classy builds!!! Stay blessed

It's funny to me how wise people can take something that is complicated and make it simple. Others take something simple and try to make it complicated. Great job, and thanks for sharing.

Thanks for the views everyone !!!

Excellent work young man. I'm very impressed with your ability to create something from nearly nothing. A thoughtful blend of existing equipment into a very cool looking exposed engine, You are a very skilled integrator. Keep up the great work! I love the chain drive cam shaft and open valve train. Very sweet. You've created a work of mechanical art, really.

This isn't steampunk, this is gasoline punk! Wow, an open cranked 4 -stroke engine- powered bicycle! Fantastic job of home design and machining! Good work :)

What an inspiration your engine is! I love the old timey hand crafted antique quality that you have implemented in its construction. Many tinkerers and builders who love the old style early 1900s motorbikes could emulate this type of motor or variation to homebrew your own modern day antique machine.. well done sir, well done!

Gotta hand it to whoever built this, they sure had skill and determination.

Its art that runs. My hat is off to you, sir!

robinhooodvsyou this thing is really cool, you did a very nice job, and now after all that hard work you put into it, you have yourself a real good starting point and completely functioning prototype. From here you can really go to town tinkering away and getting things fitting nicer, working nicer, looking more pretty ect. I think you could have yourself a neat little seller here. It seems to me like it is lacking a lot of power,I'd imagine you need a larger carb, or maybe it's just not opened up very much because it starts to choke and load up, in which case one could simple snag a governor off an old tractor carb and use the levers and mech's and have a nice mechanical govern'd setup that can keep itself running smooth when it begins to load up and run out of power etc. just an idea. Great work man! Cheers, IC.

I am more impressed than I can possibly express. ...pure genius... Thanks for sharing this machine.

Anyone that can build their own engine, even from repurposed parts is pretty damn clever in my book. I think there are plenty of elements of Genius in this design as well. Seems simple but extremely well thought and laid out for the purpose for which it was built. One day I hope to have the smarts and skills to create my own engine as well. I'll be more than happy if anything I can come up with works as well as this engine.

A very beutifull piece of engineering. This is something else than just putting an engine on a bicicle. Even the sound it makes is perfect. Thanks for giving us the opportunity to see this.

WOW....THIS IS A FANTASTIC ACHEIVEMENT!!! I am a mechanic and fabricator as well so I can appreciate the time, EFFORT AND SKILL this project took to pull off as well as you have. I don't say this often but you are EXTREMELY TALENTED... We people seem to be too far an few between these days....Nice to see that someone else holds the basics PROUD AND TRUE. WELL DONE INDEED!!!

This is my favorite motorized bicycle, even my favorite homemade gas engine. I want one!

It's just so 1899, I love it!

Very nice piece of engineering. Such engines were around back in the 1960s like the Power Pak and Berini. Your set up is very like the Power Pak, except that was only about 50 cc. At the time special steel reinforced tyres were available for use with these friction drive engines, but I don't know if you could still get one. A standard cycle tyre will not last long.

ilyen szerkentyűt még soha nem láttam ! nagyon jó pofa, kettyegő , berregő ,,egyszerüen nagyszerű ,nagy gratuláció!

You guys are talented. It was like real Music for me. Thank you very much for your video! A little bit unpractical for our country (the roads here is often mud and/or water, dust, etc.) but really BRILLIANT. Thanks again!

Wow, what a cracking job you have made there. Well done, very imaginative

love this, great ingenuity, great home made engine

Highly creative use of spare VW air cooled cylinders with piston. Quite ingenious application to employ on a bicycle. Wow!!!

I love that you put the piston upside down and the crankshaft faces up.....amazing.

Very nice !We had the same in France called the VELOSOLEX the engine was more compact and on the front wheel.From 1946 to the mid 80's they sold millions, it was the cheapest indidual motorized transportation.Engine was more compact, gas tank was on the side of it, cylinder was on top, flywheel was on the other side of engine. Headlight was incorporated to the engine. No acceleration system, but a decelaration system by cable, and ebgine coul be lifted by a small handle behind the cylinder. It was 45 or 50cc 2stroke engine.I had three of them when I was a student and in my early 30's. It was perfect for errands in town'I do regret ut sometimes : now we're asking for more performance but basic objects had a lot to say for themselves although it is true that on icy and muddy roads riding the SOLEX as we called it was sometimes a challenge !!!However it couldn't meet pollution standards these daysI was told the SOLEX now has an electric version but I'm not sure. You should google VELOSOLEX or SOLEX for more info. Good job anyway !!!

That's so cool I'd like a dollar for every minute it took to build, looks like a lot of effort but its brilliant

DIY engineering at its finest! I love it. Thanks for sharing your great job of building. I love how it sounds. I want one!

What a marvelous piece of engineering and building! Bravo!

That's fsckin' AMAZING man! Awesome!

I don't understand how this gets any negative feedback. Nice work.

Very nice bit of work. It shows that you have a good understanding of the 4 stroke engine. Well done!

Wow, that takes some real engineering. Looks like something from the early 1900's. Very cool.

Thats so amazingly clever!! I'm a mechanic so i appreciate how much time and effort you have put into this!! Very nice dude :)

That bike looks very steampunk.

That is thee most wonderful steampunk contraption I have ever seen. GREAT!!! Thanks.

by far the best motorised bycicle ever made on yt anyway

This is great for teaching purposes :) because all the mechanisms are very visible. It also has some disadvantages but it's for sure very interesting for students to study this also.

Awsome, Greetings from Denmark! I love that sort of mechanical creativity, really inspiring. thanks for making it and thanks for sharing it with the world.

i love this. im all about motorized bicycles; built a 68cc 2 stroke about 3 years back. i use it on the weekends when the weathers nice :)

Very cool, nice job!!!! I love where the cam shaft is, freaking great! Lots of Birch Trees and I hear the birds, looks like a nice area.

That is really well made!

LOL HALF A MILLION VIEWS WTF !

i,m a professional auto mechanic and your little engine is very, very cool. the whole thing is scary but cool. watch the grease cup bobbing up and down. damn that's the most mechanical machine i.ve seen in a while

wonderfully conceived and executed project! appears to be what would be called a total loss lubrication system, just like the very early racing motorcycles. I think I'd like a brake, somewhere, but that's just me. I like this project! Well done!

Haha! Where are your brakes, buddy? That is a purest freedom I've ever seen! Yeee Haaaaa!!!

That's pretty awesome dude..respect! What I wonder is the durability of it in the long term with everything exposed to the elements and the lubrication and such. Either way it's a work of art!

Very nice, love the sound and the simplicity!!

That's pretty fun, sounds so old school. Great job!!

Great engine! The best way to understand a 4 stroke engine is to see it in action! Sounds 1,0000 times better that a weed whacker motor!

thats pretty dam impressive man

The work and thought put into this is amazing!

His welding could be improved but all in all pretty sharp dude! Absolutely love it..

they see me rollin' they hatin

Good video. Please give the drawing. I live in Russia and often travel by bicycle. I want to make myself a bicycle.

Very impressive. Reminds me of the developing technology of early 1900's when motors were being added to bicycles for what became motorcycles. But dude, you really need to wear a helmet to protect that formidable ingenuity between your ears!

Engineering Ingenuity! A big thumbs up.

Look Ma, No Hands & No Brakes!

Russian "home made" inventions: gotta love it, the sheer ingenuity to make something usufull and practical with limited resources is ashtonishing and impressive, respect!

I wanna travel the world on this machine. Awesome build

Our heavenly Father has given you a real gift. Thanks for sharing.

Very nice.. How often do you have to lube it? How do you go about lubing it?

still more mechanically advanced than a harley......

I love the resourcefulness you display. this is awesome. I just wish I had the tools and parts to work with.

Excellent, very excellent. My gawd I hope who ever put this together knows how smart they are, not many could even understand what you did. Very good job, very impressive

Perhaps a splash guard behind the seat? or a bell cover over the piston assembly? Great idea.... makes me want to toy a bit...

Good Job-but- Rainwater in the Piston?

Back Tod the roots! Carl Benz would be proud of you! It is so basic that you only have one break, which is dangerous. But maybe you have good shoes.

This is incredible! Beautiful work, sir!

That thing is punk as heck.

Fantastic send me a how to too! Wow i have a harley but i love the sound of That toooo How much would u need to sell me one?

Absolute genius. Well done, lad.

the world is at your feet . .it is such an accomplishment ..using old school methods to come to that finished and proven operational unit .. the tank dip stick and bearing greaser .wide . friction drive fantastic ....live your dreams

Please tell me how do you oil the piston, the eye of the connecting rod? i think you grease the connecting rod near to the crankshaft but what about the othe moving components?

it looks nicely made. Can you imagine what is inside his head ?

This is amazing. The skills required are many. I would love to see plans, build video...anything! Very inpiring. Thank you for sharing.

Way to go brother! Great skills and ingenuity what a talented engineer!

IS THAT A KALASHNIKOF? The sound is the same

awesome, so simple. how to lubricate piston and cam?

My Oh My!! How ingenious can you be? !Kudos on top of kudos!!

Wonderful to see. There aren't many young people "messing around with stuff" unfortunately. Very good innovative brain. Heath Robinson would have been proud of you. (look him up!)

yeah! good engineer for a good free time. ¿Fuel Consumption per kilometer?

How does the crank stay lubricated?

You're one crazy technician! Impressive.....

Nice workmanship !

Probably fun to make, but it won't last as long as a snowball in helll without a way to oil itself.

keep that valuable grey matter safe, wear a helmet please!

Reinventing motorised bicycle.....well done with scrap parts making ur engine....best part timing of that valves...vw beetle clynder

Clap clap clap! Awesome! You, Sir, are a genius!

Soon to be featured on Jay Leno's Garage..

Niin karut maisemat että pakko olla Suomesta. :D

Man, that guy's good. The custom fabrication is awesome. MacGyver all the way.

Beautiful work, I've got a 1941 Schwinn I've been wanting to stick a motor on, I was thinking of using one of the Chinese 2 stroke kits that are so readily available but after seeing this I think I need to rethink that and build an engine instead, the open crank design is badass! I think I'd rather mount mine in frame though and use a belt drive, and probably geared timing rather than a chain. I hope you did a video on the build, I'm going to look for it now, if you haven't you should, excellent work..

Don't ever wear a scarf!!!

YOU can hear this engine from at least 1 mileawayI love the engineering BUT I want my engine almost silent

Love it, high praise my friend.

" thats some motor-bike"; said James to Red Molly, my hats off to you. thats a Vincent " Black Lightning" -1952

Trafilla saattaa olla myös mielipide menopelistä :D

Slavmobile

Maybe have ever seen . congratulations. I'm doing one blok and other chiches.pero yours is the best thanks for sharing .thanks from Uruguay

hey man, this is awesome. You are a gifted mechanic! Bravo