Yamaha RD500 Aircooled - Mental Build & sound! One off hand built by Kelvin Bonarski

Welcome to another truly special build by Kelvin Bonarski, following the much loved Yambretta RD350 Kelvin returns to show us his next latest master piece!
Let me know in the comments if you would like to see a sequel with an onboard ride with Kelvin!
Sadly with a leaking fuel tap (of all the things that could fail it would have to be something simple) this prevented any more footage on the day.
A big thanks to Kelvin for bringing it down to show off

[@yopacific]

Alan Millyard is like, “hold my beer”

[@ekspatriat]

Hold my tea and cup cake.

[@KelvinPaul-zy8eo]

I have to say … the Millyard is one of my hero with his engineering ability. I got my inspiration for building the RD500 from watching him on his channel …. I learned very quickly that it’s not as easy as he makes it look …👍👍

[@crazypel01]

😊m

[@lasirun950]

Coba kolaborasi sama #ajivas

[@61936]

He’s gonna have a rd750 or 1000 built by tomorrow

[@kevindavidson6715]

As a Busa rider who’s first bike was a 1982 RD 350 I would trade my bike for that one in a heartbeat!!! Love it man !!!

[@KenandConnieTaylor]

I saw this bike in the flesh today. It is so perfect, I didn't even clock that it wasn't a standard LC at first. Amazing engineering.

[@stoneautomotive]

Incredible build, I’m looking forward to seeing what Kelvin builds next 😬

[@keithelliott2191]

This is truly a thing of beauty. A masterpiece! Brought back wonderful memories of my 100cc, 125cc, 250cc and 350cc air-cooled 2-stroke Yamaha twins in the 1970s - but they were nothing like this!

[@KelvinPaul-zy8eo]

Well Thank-you so much … I am so proud of her

[@christophersmithsonian3350]

My little brother had the RD100 the RD125,RD 200 ,RD 250,RD 350 RZ 350 LQ and A Daytona RD400 so cheers you had the same bikes / 😎

[@Railrider765]

Had 78 rd200 with expansions would fly!!bored 3rd over.

[@vonSnook]

Ya it's cool but with only a 6,000 top rev hardly a tweaker. I guess ya won't have ta worry about the powerband kicking in .

[@KelvinPaul-zy8eo]

@@vonSnook the reason for the 6000 max is I am still running her in I am now taking her to 7500 but she wants to go further. I will put a few more miles on her before I do ….👍

[@taiezawa]

It is truly a miracle work! Wonderful!

[@treeandaturd]

got to appreciate the amount of engineering that went into that!

[@russellcaldarola9707]

I love that a man can take something that was never supposed to be and makes something special.

[@brentkelsay3439]

What an incredible bike! Always loved the yellow and black paint scheme. That RD 250 was awesome too. Had a '72 DS7 250 back in the day, the RDs came out in '73.

[@hankcarver3219]

Simply beautiful I had a 75 rd 350 and a 77 rd400. Loved those bikes. Long live two strokes!!!

[@ervinhevar8732]

Très belles restaurations ! Un saut dans le passé qui enchante les oreilles des connaisseurs et/ou des nostalgiques...

[@johnhewitt1096]

Absolutely beautiful. That sound is music

[@benhoward4294]

Brilliant. Just waiting now for someone to bolt two RD400’s together. Good work. Well impressed from an an ex LC nerd. 😊😊

[@stoneautomotive]

Kelvin would be the man to do it 😎

[@eddieandrews3335]

Dear God what a beast that would be, love it

[@philco7044]

I was thinking the same 2 x 400 😊

[@matthewstorm5188]

Closest thing would be the TZ750.

[@donaldross4217]

I want , too job and beautiful bike I Nearly bought 500 lc Last year But couldn’t spend £20 to 30k On a bike you would be to scared to take out the garage and get dirty Bought a Ktm 1290 beast instead At least I can afford to fix the beast if I drop it

[@CarsandCats]

Just brilliant! This man is an incredible craftsman and engineer.

[@MrAllstar]

The RD-250 SOUNDS like so much fun!!!!😊

[@williamcarey4172]

Boy o boy that is without a dout the coolest build i have seen in a looooong time......

[@KelvinPaul-zy8eo]

Much appreciated buddy 👍

[@darylsmioth1904]

What an awesome build and SOUND!

[@Lee-mx5li]

Great job 👏

[@idiot-983]

What a wonderful and Beautiful peace of engineering.

[@SilverSurfer5150]

Absolute per-FEC-tion!!! This is the bike Yamaha should have made back in the day! The creator deserves a medal for making this! ❤❤❤

[@stoneautomotive]

Glad Kelvin was happy to share the project with the world, true work of art 😎

[@GavJones-nz2nq]

Great job mate. Such dedication

[@brettgl21]

Absolutely BADASS! Nice work.

[@overlander123]

That 500 is stunning in looks and sound!

[@KelvinPaul-zy8eo]

One difficult job was to fabricate the expansion chambers to look factory and the same either side … took a few weeks to achieve 👍

[@elmerfudd1086]

Very cool. I love to see guys building radical two stroke bikes again. Imagine what two strokes would be today if the big manufacturers hadnt stopped building 2 stroke street bikes. A big thumbs up to all you geniuses out there creating these 2 stroke animals. ❤ Keep at it please.

[@wayno23]

Sounds wicked 🎶💨💨

[@txrick4879]

Brought back memories of my 500 Kawasaki triple . Awesome build .

[@KelvinPaul-zy8eo]

Cheers buddy ….

[@davidshelton876]

Well done mate, very impressed. Have seen triple rd before but not a four. You deserve a medal for creating that. Excellent!

[@KelvinPaul-zy8eo]

Thank-you sir for your kind words much appreciated 👍👍

[@robertocarlosdasilva3470]

​@@KelvinPaul-zy8eo é sua?

[@ianrussell2816]

Wow ,what an awesome job , I am amazed at the sheer talent some people have, that engine is up there with factory finish , you have a real talent there man , keep up the awesome work you do 👍

[@KelvinPaul-zy8eo]

Cheers buddy

[@bennyrobles9194]

What a beautiful bike, the RD 500. I had a 1975 H1 500 triple with denco chambers. Little brother of the widowmaker. The sound and the smell of these bikes is just awesome. Had great times with it.!

[@DarR1299]

I had a 1975 S3 triple with Denco chambers. Little brother to your H1. Not my first ride but it was my first purchase. What a short powerband but when it came on it was something.

[@m0ogy]

What great work, I really enjoyed the video.....back in the 1980's there were a couple of RD500LCs made, one was black and even had stock LC pipes and both were liquid cooled too

[@PositiveMovingImages]

What a beautiful motorcycle (and it's a two-stroke beauty).

[@andrewdavis5404]

Exhausts worked out just perfect

[@stoneautomotive]

Kelvin thinks of everything in these builds 😎

[@deborahchesser7375]

The TZ’s smaller cousin, the artistry alone on this bike is amazing, never mind the mechanical side of it. Well done ✌️🇺🇸

[@spaceted3977]

Fantastic !!!!!

[@hennies9509]

A friend left me his racing 350 for a couple of days. It was adrenaline time for a couple of days. Your bike is a beauty!!!

[@philc8575]

Proud Papa has a lot to be proud of!!! Spectacular job, Brother!!!!

[@KelvinPaul-zy8eo]

Cheers buddy 👍

[@jonandrews4493]

Wonderful craft, superb.

[@jayhayes5039]

Great job sounds killer to

[@eddieandrews3335]

Bro that is pure beauty, well done on an absolutely amazing machine and show. I really hope manufacturers pump out affordable two strokes again once the problems of emissions are sorted because they will sell frigging well

[@juliodefreitas157]

Absolute master piece .perfection ❤

[@matthewpiper1421]

That is what yamaha should have built, nice job.👍👍👍

[@Ppnowin]

This was cool. This was respectable. The bike that rips.

[@alanlee9703]

What a technically brilliant job , from the factory finished look to that amazing burble. A truly wonderful creation hats off to you sir and thank you for showing some of that great engineering

[@sandrowhite7134]

Powww incroyable elle est magnifique 😍 un vrai sorcier de la mécanique ! Bravo 👍

[@interman7715]

Bloody awesome mate .

[@michaelcarmean4906]

That Is So Cool ✅ Absolutely Love It

[@stressederic64]

That is just a stunning achievement mate, well done.

[@KelvinPaul-zy8eo]

Thanks buddy

[@user-io2lx4qm9u]

Perfect sound.

[@orical2832]

That sound.... Perfection.

[@stoneautomotive]

I looking forward to hearing Kelvin taking it out on the road with the cameras fitted 😎

[@Moontanman]

That truly is an awesome bike!

[@dk-fy1di]

His bikes are a kick in the ass that feels good all day long...

[@K1lostream]

First time I heard of someone looking at what Allen Millyard does and thinks “Yeah, I could do that” and then do it! It’s not just the engineering achievement, it’s making it look like it came out of the factory! It looks amazing!

[@stoneautomotive]

He’s certainly one talented man young Kelvin 😎👍

[@johnbelcher7164]

Had the old 350 RD back in the 70s awesome 2 Stroke this 500 looks great

[@KelvinPaul-zy8eo]

Well thank you very much Sir 👍👍👍

[@roberthampton8682]

WOW! What a beautiful bike! It looks like what Yamaha should have built! What a GREAT JOB! And thanks for sharing it with us!

[@KelvinPaul-zy8eo]

Your right Yamaha should have built one years ago …. 👍

[@pubbiehive]

@@KelvinPaul-zy8eo they did, except it was liquid cooled and had fairings.

[@stevelee5724]

​@Kelvin Paul please expand on that. A rd 4 banger ?

[@stevelee5724]

​@@KelvinPaul-zy8eo Oops I meant to send that to Pubbie hive

[@stevelee5724]

​@@pubbiehive please expand that story. A factory 4 RD ?

[@andycook2746]

I saw it in the flesh today at the VJMC Boxhill megameet, really well done and sounded lovely

[@KelvinPaul-zy8eo]

I am so please you liked the bike … it was a lot of hard work but really satisfying to ride now although I am still running her in 👍👍

[@anthonycowles3153]

Very nice mate , cheers 👍

[@user-zu3dh7lu9r]

Amazing solution to keeping the chain aligned with the rear wheel on the 500. That's a pretty trick 250 as well.

[@justinboon3811]

What an awesome machine that yellow quad pipped Yamaha is two 350 engines must be a blast to ride Kelvin is a magician never heard of anyone else doing this to a 350 Rd it must go like a rocket 🚀 with its pops and bangs

[@sheridenboord7853]

Well congratulations Kelvin. You made it look like a bought one. You proved a point. Not only could it be done, but looks fantastic too. I can't believe how well the wide motor suits the RDLC bike.

[@KelvinPaul-zy8eo]

Well Thank-You Sir - I built it to look factory, and really you wouldn’t notice the upgrade unless you knew what you were looking at - just goes to prove Yamaha should have built one back in the day ….👍

[@tabcreedence6553]

Beautiful job mate

[@JohnOLooney]

What a lovely build, id love this i honestly would.

[@Heavy_Distortion]

Phenomenal build. Kelvin is a true master.

[@stoneautomotive]

He certainly is, a true inspiration 😎 I could only dream of having such fabrication & design skills, to top it off he’s a great guy to sit down and just chat bikes builds with over a coffee 👌

[@gustavodemelo7]

Great job!

[@ianmangham4570]

Beautiful tank and paint ,that top camera shot looks real smooth 3:00

[@deanshand4559]

yes

[@samsmithbr]

BRILLIANT!!

[@jimbeau64]

Sounds just like my old 1984 RZ 500 sounded. Wicked!

[@julianv.5848]

Marvelous build of an RD 500cc.... Looks great and is a dreem pice of engeneering, nothing better than two stroke motors miss them so much...🤔 Greetings to Kelvin Bonarski, and Alan Millyard 🤩

[@jayhayes5039]

Nicely done love the bike

[@mikaelmartin9288]

Wow. What a ncie build.

[@patchthesinclair5896]

Yes please the sequel!

[@stoneautomotive]

Need to see when Kelvin is free with the sunshine finally starting to appear in the UK 😎

[@chrisz8532]

Love how the bike is parked in the ‘disabled park’. Hopefully not a prediction! Awesome bike you got there 👍🇦🇺

[@KelvinPaul-zy8eo]

I always park my bikes in that spot so fingers crossed

[@stoneautomotive]

😅

[@suffern63]

Can you smell it ?Love it.

[@gcolwill]

Wow - crazy! Beautiful.

[@KelvinPaul-zy8eo]

Thank you buddy much appreciated 👍

[@kd350]

Nice! From one of NY's most prolific collector of daily drivers...'67-'89 two stroke Yamahas life long ownership and all plated. It's time for me to seek out a 4 banger.

[@paullynch7672]

Well done very nice 👌👍

[@AlejandroSienra]

Excellent! Fast machine.🏍💫🌠

[@CB1000FP1]

In my 50-plus years of riding motorbikes, I've never been a fan of two strokes, but I have to say that's quite impressive

[@KelvinPaul-zy8eo]

Well thank you Sir …. I built it to look factory so even if you know what the bike should look like you need a double take to see what’s been done 👍👍

[@the_forbinproject2777]

absolutely fantastic workmanship ! great sounding too . Cant wait to see if some heavy box tubing swing arm will allow the engine to reach its full HP !

[@ianmangham4570]

Awesome little beauty 😍

[@africanpirate972]

awesome - must be great to ride

[@trevormann8221]

Great stuff, good clip, thanks

[@r.blacky341]

Respect looks like i am 16 years old in pass, the Yamaha RD 250/350 come new and we are16 years old and love them all!!2 takter are so light weight,its a great fun drive one!! Great Master pice!!! Sorry for my bad english best wish Reiner from Germany

[@ramishrambarran3998]

Man ! How I would love to own a bike like that ! Trinidad & Tobago. West Indies.

[@chendo627]

love it, my first bike was a 76 rd 400, 2nd 83 rz350

[@Cyborgmarsupial]

Gorgeous

[@jeffhubbard5660]

Stunning. I rest my case.......

[@KensGarage1]

What an incredible one-off build. Hats off to the builder/fabricator. It's so amazing what these people can come up.

[@stoneautomotive]

He’s one clever man Kelvin, he has more incredible projects in the pipe line so stay tuned 😬

[@fs1e734]

Truly a work of sheer brilliance,,,would love to see her,,,regards Eddie in derby 👍

[@sticks1056]

Splendid build

[@KelvinPaul-zy8eo]

Thank you buddy much appreciated👍

[@markkaupas8921]

That is a masterful job you did to create a inline 4 cylinder out of RD cases. The bike is simply gorgeous! I had a DS7 RD 350 and a RD 400. The 400 was tricked out with everything and completely stripped down, it was fast and explosive. Topping out 6th gear for more than 20 seconds would blow holes in the pistons. I should have put larger carbs on it so the engine could breath better. I injured my back and had to get off them but I will never forget the fun I had on them.

[@KelvinPaul-zy8eo]

Thankyou Sir …..

[@robsawalker]

Utterly superb! I remember maybe Bike magazine doing a joke cover with an RD500LC (which was actually a model) on the cover years ago

[@carlfogarthy6508]

incredible

[@KelvinPaul-zy8eo]

Thankyou sir

[@CPLJimmy-bh9kc]

Can it do a Wheely? Ha ha ha. You bet it can! I was a teenager in the 70's so I got to see ALL the Bad Ass Bikes and Cars of that decade! Love it!

[@williamspowagespowage2963]

Brilliant.

[@stephenjohnson7519]

Nice 👍 work

[@MarcS4R]

amazing bike, my friend just built a 700cc dragster with two RZ350 engines welded together like this one. got to love the two stroke

[@MrGamman3yt]

Cheetah does an 600cc banshee. Why not do that?

[@neilstandish455]

Very nice 👍

[@westboundbadger]

Kenny Roberts colours will never get dated,..Had a yellow RD 400 back in the day which spent a lot of time on the back wheel!

[@cecilwilson5442]

So well built Yamaha should have done it 😀 brilliant stuff real nice looking bike from all sides ☘️☘️☘️ from northern Ireland

[@KelvinPaul-zy8eo]

Well Thank you sir 👍👍

[@dietermuller6737]

Ich habe schon immer 2-Takter geliebt, das ist absulte Meisterarbeit die 2zyl.von Yamaha Klasse, aber 4Zyl.Superklasse!!!tolle Arbeit!!!

[@stephenpublicover8818]

Hey Kelvin , great looking bike. I used to have a Yamaha (77) RD 400!

[@reinhardpinter9649]

Wow--- was für ein wunderschönes, tolles Bike --- ich bin selber Biker Bj 67 --- aus Österreich, kannte dieses Bike nicht,war auch nie auf unseren Markt ---- genial ❤