Ready to Cast - The V4 2 Stoke Build
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- Опубликовано: 15 фев 2024
- In this video I'll update you on the progress of the V4 2 Stroke motor build, I'll cover some considerations and the situation when it comes to casting this.
This was designed by me in fusion 360 and the patterns were made at home on my CNC mill. I plan to lost foam cast these in aluminium and have them heat treated to T6. 
Наука
Dont know if you did any wax work on your VTwin, but very low melt point is you best bet. Do you have fillet tools and scrapers? Best to practice on some scrap. Some people have better luck with the wax seal rings for toilets. It's very soft at room temp. You can also alloy your own wax and make a simple extruder to extrude rope of the desired diameter. A warmed ball tool will melt it into the filleted shape. You may already have crossed this bridge but if not give me a shout on the casting forum. Best, Kelly
awesome. thank you for the update. I love two strokes, especially larger displacement ones.
You're not alone
this is what i have been dreaming about lately! a v4 2 stroke! love to see it, will be following closely
Really, really cool project. Looking forward to the next episode 😊
lets hope It's a positive casting experience
@@OddsandEndsMachining fingers crossed 🤞
@@OddsandEndsMachiningwhy didn't you just get the original cases Tig welded then machine the excess back off on them broke cases from your other video or have I missed something ?
@@officialmysteriousrider130 I’m making an entire new engine, only using the gearbox internals from the first motor. That motor is an 800cc 4 stroke 3 cylinder. This motor is a 350-450cc 2 stroke 4 cylinder.
Wonderful project! Looking forward to the next video. All the best mate!
This will be interesting, I just subscribed to stay up to date!
This is very cool, amazing to watch the process on youtube by a home builder! I was thinking there have been quite a few "V4" twostroke builds in recent times that mimic the Yamaha, Suzuki late 500cc models, No one has made a true V4 design to mimic the Honda 500's. I think there is an opportunity there as the NSR replica's with RG, NS motors would be more awesome with the right motor. I think on Facebook there is an Aussi guy currently working on doing just this, could be an opportunity to collaborate! ;)
Thank you, pass on a link to his page if you can.
The main reason for using a twin crank is off the shelf parts which will be available for a long while can be modified to work. An nsr style would require custom cranks which would cost a lot to make and mean you’re making a lot of spare parts to keep the bike running.
Using NSR 250 crank parts might be an option, although those parts aren’t cheap and won’t be around for very long.
That's magical !!!
Hell yeah cant wait to see it
can't wait to its done, soo i can make rd500
I think it will be even better than an RD500.
Not sure exactly how your firing order plans go. Will two cylinders be communicating inside the case or will you use crank seals between each rod? I say this because regular seals usually won't be enough because they only work in one direction. Old merc in line 4s used labyrinth seals that are a very slick idea and keep lube flowing also.
The bike up will fire the upper cylinders together, the lower will be the same. It will use 2 crankshafts, none of the crankcase sections will communicate with one another. I’ll do a video explaining the set up better.
Any updates? I’m excited
I’ll be dropping a video either tonight or in the next couple of days.
Awesome project! There is a project here in Europe led by 2 French and 2 Italian, they made a copy of Yamaha 500 gp engine. They created everything from scratch or almost. Maybe you can have a look at it? It there a way to contact you privately?
Thanks, that would be cool. I always enjoy talking to like minded people.
Email me if that works Oddsandendsmachining@gmail.com
I assume you’re going to use some off the shelf cylinders ? What are they gonna be ?
YZ85 or I might use the Athena 112cc cylinders
@@OddsandEndsMachining so you’re going to use stock yz 85 stroke so the displacement is going to be 340 cc ? Are you going to try and package 4 expansion chambers ? This is super cool
By the way I’m sorry to spam you but I’ve been wanting to do this myself . Not this in particular but my application will be snowmobile drag racing and I wanna turn 2 twin cylinder 2 stroke snowmobile engines into a three cylinder .
@@AnDrEw122100 ask as many questions as you want. Yeah, depending on the cylinder, it’ll be between 340 and 450cc. As you can get a 112cc kit as a direct bolt on for the yz85.
It will have 4 chambers, 2 under the seat and 2 out the right hand side.
@@OddsandEndsMachining awesome I’ll be following for sure . Where are you from ? Australia ? I have a friend from there he tracks motorcycles as well he’s from Adelaide .
@@AnDrEw122100 New Zealand, just a bit further south, at least there are a few tracks here and you can ride year round.
What cylinders are you intending on using? Why twin crank instead of single, also why not counter-rotating twin crank? Firing order? Cylinder reed, case reed, or piston port?
I should do a recap video once the casting is done, but here you go.
-Yz85 cylinders for the prototype but YZ112 for the final product. (Really only a 450)
-This uses standard Yamaha cranks. . . Cheap and fast to maintain/get spares for.
-Contra rotating on a standard YZ85 crank with a 20mm shaft would create a very weak point, using an intermediate shaft allows each crank to see very reasonable loading.
-it will fire in pairs like a 90 degree v twin for good balance and drive ability.
-case reed as per the YZ85
@@OddsandEndsMachining How much total output are you hoping to see? Will it be using larger bore 85cc cylinders only or will there be added stroke?
@@BillyWillicker a really hot 85 can see around 30hp. It’s a bore/stroke kit it should be good for a around 35ish Hp as a 112.
It could make between 120-140whp
@@OddsandEndsMachining I'm more versed in 200-250cc(stock size, mod to larger usually 240-330cc) cylinders but what are your planned durations, T/A targets, and RPM range that you're looking for? Getting it piped for a reasonable power spread may be difficult, even with the torque of multiple cylinders. Also, what fuel and compression target?
@@BillyWillicker
-98 pump gas
-12-12.5:1
-13,000rpm peak power
-timing is undecided but it will probably end up somewhere around 196-198+ on the exhaust and 130ish on the transfers.
-I’ll design and make the pipes, the beauty of the high rpm is that I can make them quite short and easy to package. Due to the lack of power valve I will probably add an ATAC style chamber to boost the low end power, but obviously the plan is to build off a stock YZ85 and develop it slowly.
Que tipo de espuma
Extruded Polystyrene or 'XPS' for short
Only 50 mullimetres thuck bro?
The foam sheet is 50mm thick it comes in 600x1200 sheets.
Yup thits bout right brew
@@jameshatton4211 Sweet as bro.
@@HeathLedgersChemist can I say it? I think I can say it
"Ey brew wanna chup? A potato chup?"
'oh nah brew I can't choo brew? I don't hiv teef? I only eat plinkton'
We gotta join en ind take the puss hahaha
I don't think he noticed the mullimetres and thuck to notice you takin the "puss" brew (hence I umphasiised ut with brew hoping he'd citch on? But now I'm the only one left lookin thuck😆)