daves twin opposed piston engine

Twin cylinder, opposed piston, four stroke, gasoline powered engine.Origanal design by Doug Kelly, hand crafted from the finest materials by David Hutcheson.
info at: [e-mail] 562 441-4938

[@timboers437]

coolest way to make a cup of tea/coffee by far!

[@mrcatdoc]

this is a two cylinder engine with 4 pistons and two crankshafts. the piston come together in the center in each cylinder to make the compression ,the cylinder head sits on top of the block in the center with the intake and exhaust valves

[@daveg1208]

That is very cool. I appreciate all the hard work it took to make that motor run. Love it and thank you.

[@v.e.7236]

Similar to the Achates engine and some older engine designs that are touted as being exceptionally efficient. Nice job.

[@mrarkane]

Superb work. I especially love your injector jerk pumps? Super workmanship!

[@AsloAso]

Maybe the future of automotive

[@mrcatdoc]

I run the engine on a mixture of Coleman white fuel and a little two stroke oil. the fuel only has an octane of around 55, that makes it real good for low compression engines

[@TimSmith-vl4qk]

Opposed piston engine has high compression

[@Wingnut353]

@@TimSmith-vl4qk That depends on the stroke.... probably a fairly short stroke here.... the advantage of OP engines is they can have double the effective stroke without double the crank throw...

[@mustfindaway]

Man This really Felt like BAM This is the ENGINE GO WROOM WROOM :D

[@vardfriki7274]

Man that's cool!

[@robert1352]

Fantastic workmanship!!!

[@jackel0228]

Thats a beautiful piece. Cummins is now looking at putting a similar setup in tanks.

[@jamescoleman4747]

AFV432 1961

[@kbbacon]

Nicely done!

[@BENZ007]

amazing.

[@akkudakkupl]

This configuration would normaly be used with ported cylinders and a blower (and selfignition). Would like to see this in 2 stroke mode with a small blower.

[@cafesociety8525]

Sweet Subaru.

[@Wingnut353]

that would be a boxer... this is not a boxer.

[@tomlong5832]

Beautiful

[@mrpiotr231]

great video man

[@aaroncameron1494]

looks like the cooling system is atmospheric pressure?

[@Hunty49]

Amazing design! Instead of the 2 big flywheels, would you be able to use cogs to turn a single flywheel between them?

[@otisarmyalso]

Looks like Rootes concept? Seems best way to make opposed cyl dsn

[@herfaysool9895]

amazing

[@mrcatdoc]

thank you

[@barrytipton1179]

Looks like a true labour of love a Commentary would be nice

[@neuxstone]

Interesting and cool. How do you keep the crank pins lubricated?

[@omertahir5112]

Un bijoux

[@robertwillemsen368]

Very nice build! Impressive. How do you lubricate the crankshafts and piston rod’s?

[@mrcatdoc]

Just some drops of engine oil hear and there before it's started and I run a little two stroke oil in the colman white fuel

[@indrarextroy2978]

Cool

[@Todd-rk2lb]

Cool coffee maker :)

[@sergeykrukovski4011]

Actually the main point of an opposed piston engine is a lack of valves and their drive. Which theiretically gives more efficiency due to of no need to drive valve springs. Did you try not to use the valves? It's really interesting, if it would be possible to make it work without intake blower.

[@mrcatdoc]

And also they are diesel.

[@orppranator5230]

What is the compression? I am planning on building something similar with nitromethane fuel, based on regular RC engines that you can buy. (Those have ~8.25 to 1)

[@billygilbert7911]

This is awesome! Im assuming you built it.

[@mrcatdoc]

Thank you I did build it

[@larimadunaldo9814]

How's the vibration and fuel efficiency?

[@user-lm8fx6kc1b]

2 cycle?

[@mikecorleone6797]

Lol that’s badass

[@monstercameron]

smooth engine, I imagine it wouldn't need balancing weights on the crank like an inline 4

[@mrcatdoc]

It needed a lot bigger cooling system through

[@thedoctor2102]

Four stroke..? Sleeve valves?? Very impressed nonetheless

[@mrcatdoc]

It's a variation of a two cylinder "opposed piston engine ".

[@GG89220]

Hello I bought the plans for this engine, did you flywheel the engine at diameter 2.25 or larger? thank you

[@mrcatdoc]

I first made them to plan, I felt they did not carry enough energy so I made them bigger. Also you should make a decent sized intake plenum the air fuel will mix better and you should get much better throttle response. Also you need a bigger cooling system and you need to pin the heat shafts better than what the plans call for

[@GG89220]

@@mrcatdoc hello i finished the engine kzbin.info/www/bejne/l3vYeJ2HjqeYmcU

[@ethanfitton6336]

Try putting the opposite piston engine in a car.

[@abz124816]

I appreciate the effort to design and manufacture this engine. What is the purpose of this toy?

[@mrcatdoc]

This is a 2 cyl opposed piston engine. I run it on Coleman's white fuel with a little 2stroke oil mixed in. During WW2 a German company, Yonkers manufactured a diesel version that was used in bomber aircraft. I wouldn't call it a toy, but the purpose of machining every part by hand and assembling the engine and seeing it run is for my enjoyment!

[@cbobadilla72]

Ever thought of making a bigger replica and putting that on a bike?

[@mrcatdoc]

I would like to make a bigger scale because I think it would run much better. The issues with putting it on a bike or something is lubrication of everything

[@renandavidsoriaahumadatele4823]

wait where are the fumes coming out from? its not a 2 steps motor? there should be oil being burned

[@Wingnut353]

he probably oils it manually externally, and the fuel is also oily... opposed piston engines inherently burn pretty clean no reason to expect smoke.

[@peterwiremuormsby9383]

What's a two step motor?

[@khandujadhav8967]

Hi. Sirrr

[@Thunderstormworld]

This reminds me of a VW Always needs to be tinkered with to run properly 🤣

[@EoverMC2]

Okay call me a lamer but, I do not get how you made this a naturally aspirated four stroke? As opposed to a fuel injected diesel two stroke? What are you foisting upon a brother here?

[@Wingnut353]

It has valves and a head on the side basically... instead of ports.

[@ironclay3939]

Henry Ford would have been Ecstatic over this - Today Henry Ford is Dead. Apart from showing a different end to the same dead world What are you showing - I'm looking for something NEW - what are you showing?

[@peterwiremuormsby9383]

He's showing something he built with his own hands for his own enjoy ment,

[@catdoc31]

the compression ratio is adjusted and spark plugs and ignition added