First Start - Back on track to the Most Powerful Two Stroke! 

my fav mad scinetist

This guy is not just a genius he’s a mechanic gone wild❤❤❤

Two steps forward and one step back. That's how it always goes in research and development. I've been working in the field for 10 years now, and we're still reinventing the wheel on a regular basis. Don't worry about repeating so many small and big mistakes. All other highly-paid engineers do it too. It's nice to see that you're obviously mentally feeling uphill again! Best wishes from germany!

You did not "FORGET" to put sealant on the mating faces... You did a "DRY ASSEMBLY" TO SEE THAT EVERYTHING WAS GOOD... Nice work - keep it up please.

Woohoo! It sounded very healthy that little rev we got 👍😀

I'm having a terrible morning but seeing this get uploaded just made my day a bit better

A fresh start. It's great to see all your hard work coming to fruition!

So glad everything came together so you can continue the good work. This is one of my few channels I really look forward to the next video in the series. Its just relaxing watching you work on and troubleshoot this motor. I must say I do miss the jazz music in the background.

Great to hear the ring-ting-ting of success!

Cant wait for some dyno numbers.. keep up the good work! 💪🤜

It was awesome to see it start, and start so incredibly easily to... I am very excited to see the next video on Friday, and what kind of power the engine will make now.

Just a FYI, I saw a video a long time ago of a guy rebuilding an engine on a light plane/ultraglide, when assembling the cases they apply the gasket goo and add a single strand of thread around the circumference, I don't recall the type, but it stops the cases getting squeezed too tight together squeezing all the gasket material out. I'll see if I can find it. Good luck with your project.

The original Norton Manx engines had the problem with crank flex wearing out the bearings and even cracking the cases at high revs, they changed to bearings that allowed the misalignment of the crank when flexed. The races had a spherical element to them but the balls remained in contact even with the inner race being skewed out of alignment. You could probably find something similar for your bearings. Something similar was used on Chevy Corvair rear wheel bearings to allow the half axles to move within the bearing and keep the trailing arm from flexing along with the half axle angle.

Awesome build and instant start! I hope you will continue thinking about the difficulty starting the engine with destroyed bearings, and do a presentation illustrating why that damage effected start-up and power production so greatly. I love that you left in the part where you omitted the sealant, and had to do it over again. The best!

Always a treat having 2 stroke stuffing.

putting the gasket between the carter and cover of the rotary valve increases the gap of the rotary valveplate in its seat as it moves the cover away from the motor you could lay a sliver of gasket material inside the groove of the o ring and lay the o ring on top of it , should raise the o ring out of the groove some

I love this channel so much , I hope the best that you get the results that you desire 😉

Beautiful. I have a good feeling about the results this time.

Just wanted to let you know how inspirational you have been in my own quest for two-stroke high performance. Cheers from New Zealand.

See a tiny bit of space on the table you could fit some more stuff there . I was always told to do the Horning vertically because of gravity

Congrats mate, really looking forward to the progress now!

I'm thinking back to your first videos and I have to say you've come a long way. Well Done.

Alex, I take it you didn't see my previous posts on your last two videos about how you re-engineered the Rotary valve and the carb side of the Rotary valve casing to be perfectly smooth, but yet left the engine side of the Rotary valve casing with circled grooves in it. Again, as you (and anyone) will know, take two perfectly flat surfaces, and place some oil between them, they will slide oooohhh so easily (having grooves would only hamper that)... So... Just as a suggestion?🤔 Maybe take the time to re-engineer and flatten that motor side casing so it too is ultra flat? It might help with reducing friction/wear of the Rotary valve itself and possibly help the action of the Rotary valve too... What say you? 🤔😏 But... Anyways... Except from temporarily losing the small end bearing, and temporarily forgetting to seal the casings up (it's those silly little things isn't it? Haha)... It's great to see you getting back to progress after the 'Arm & Hammer Charcoal Toothpaste Incident' 😉😛🤣🤣🤣 🤞 for a speedy recovery to massive power gains! 👍 😎🇬🇧

yes ,this is it ,the one ,the way she started right up almost first rotation is a great sign,especially wile loosing slight compression 😁and sounded sound and tight,good times ahead brother ,and you definitely deserve some 😎

Wauw - that was an easy Fast start up💪🏻

Congrats! I'm so excited to see you put down numbers.

sounding better it started instantly that is a good start

CONGRATS ON YOUR DONUT HORSEPOWER VIDEO REFERENCE!!

Ser redan fram emot nästa video! Underbart arbete du har gjort Alex👏👏 Du är ett mekaniskt geni😃

I love your videos man. You put forth a lot of effort and it shows, much admiration!

Great to see it start up with the fresh engine and all the things that now make it sing

22:41 easy start and healthy sounds! Write down everything that you potentially need to go back for before forgetting. Bravo

Come on Friday! .. can't wait to see this thing finally make some power .. been following this build for years 😅🎉

hello always a pleasure to look at you for your joint problem some turn of teflon tape the same that we use in heating insert in the groove of the joint then put the joint back and this can help to increase the thickness for a better tightening in addition the teflon resists heat well. good continuation towards a success of which I have no doubt. best regards jp

Your persistence amazes me, I would have given up years ago

Congratulations!!!! This is getting exciting

Keep going bud, great content. Brilliant

Nice work ! Look forward to Friday video. Love from South Africa 🇿🇦

The dedication to this motor is unreal can't wait to see it fly down the street

A lot of times With a spring-loaded lip seal You can take the Spring out it screws into itself remove a couple of coils Carefully with a small cut off wheel thread it back into itself to tighten the fit I've had to do this in my automotive career Where the old seal had Worn a deep groove into the rotating part and would not seal up with a standard new seal tightening up the lip fix the problem Might help your situation Also slightly Oversizing bolt holes Installing the seal and the Center Seal surface before Tightening down bolts will self center itself Just like installing an General motors LS style timing cover install the dampener in the seal before you Tighten the bolts on the timing cover should center itself

That engine sounds really good it has a deep rumble to it

Sounds like a whole different beast...

Perfect start!! That´s very promising!! You´re again on the crest of the wave!!...you´re strong, don´t forget bad times don´t last too much. Come on!!!!!!

Great to see you back at it! Much respect!

So good to hear it run again. Can't wait for the next videos

Finally back on track and looking good for some new testing...well done 👍👏😎

Hooray on the progress! Great cinematography as always.

Well that started easy and sounded healthy. Looking forward to Friday 👍

Good job Alex... Maybe a shim can be placed in the O-ring groove...so it pushes out the O-ring farther, increases the squish and seals the cover...also perhaps create a hollow cylindrical collar...that ensures the crank is concentric to the seal O.D.... Its great to see it fire right up after all the new goodies were installed.. 😮

Complimenti Bro!non vedo l'ora di vedere il prossimo video

support from your first build till this day !

I’ve heard Jacob’s chucks have hardened jaws which do not grip carbide or hardened materials like they do with relatively soft drill shanks. Thanks for sharing your progress with us!

IT STARTS!!! Love to see it!

WOOT on the easy start! Good job.

Brilliant! Am waiting (im)patiently for Friday! can't wait👏

That startup sounded very promising! Glad to see it.

Mate you are a legend. Cool calm and logical. We missed you for a while there but super to have you back. Keep it up and let's get 100hp😂

Alive! It's Alive! Can't wait for 42+ pferdstarke.

Nice one. When my rc engines become hard to start or won’t idle I know it’s time to rebuild 👍🏼

Thanks man!

Fantastic progress!

sounds great, can't wait to hear it run on the dyno!

Hey up mate thought you were been very brave bolting those cases together without and then five or so minutes later, really cool it now needs less rpm to fire up, good work, and super looking forward to Friday, all the best wishes to you

Good work. Cannot wait for some proper dyno pulls. Future is looking bright

You're almost there bro! Keep it up!!! 👊🏽🙏🏽

great job, zipped right along thru that video, was good to see

Brilliant as always, and thanks too 👍

that sounds crisp even without the pipe!

I swear to you that I would really like to try it on my KZ kart. You are a genius.

Good one , looking forward for tomorrow :)

From one mad shed head too another Good Job. Keep it up.

You can also use your cnc milling machine as coordinate measuring machine with the zero tip tool...

Heres a tip with o rings that doesnt seal or is a bit to thin. Before putting the o ring in its groove ,put some sealant in the groove, then install the o ring. Wipe the exes sealant off then lightly instal the part so that the o ring is sitting evenly all round. Then remove the part so that the sealant can dry. Now re install the part and u good to go.

Gonna love this

Good morning all. I dig this channel so much . Lol

Cant wait till Friday

Avoid tappning your shaft with a hammer during assembly (rotary valve end) and your ball bearing will last longer😉

4:49 I have two dead 80cc 2 strokes that can attest to the damage those little ears cause when they inevitably break off.

this engine has become a piece of art.....

Wow, It start so easily now.

Love your vids and watching you learn along with us. Old school trick for stopping bearing movement, use a Dot punch on the case to make some small marks and that locks the bearing in place, saves locktight in the engine :) in saying that, is locktight bad in an engine? Might dissolve really fast anyways

Watching you work on the piston , get some leather for your block it can be cleaned up and doesn’t scratch

That started easy! Good sign 👏👏

Oh yes, autumn and winter is garage time

The Sisyfos of 2 stroke has blessed us with another chapter of the struggle🪨

Get'er done!

Back on track let’s go! Was gettin a little worried that progress would slow down after the last video. Not anymore!

With the rotory valve cover, it might pay to drill and tap extra bolt's in between what you have there. Those bearings must of been putting a lot of labour on the motor filled with black death. The oil lines in crank case was a good idea Alex 👍😬

good job

nice sound now

Perfect video content as always,... With a cliffhanger... Bra saker..!

Super job 👏🏿 👌 🎉

ohhh baby.... we are getting here now

Some homemade cardboard gaskets would be even better. Mechanics have been doing it for a century or more with great results.

2 STROKES AND STUFFING!? You spoil us.

It's about time..... 😁👍🎉

Been missing you my friend!

It actually starts

good effort

When you get your seal, get some 2mm orings too