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Anoter picture of screwed crank for V2 engine

Have started on dimensions from Holly Buddy. Significant change is 6mm instead 5mm crankpin diameter but only 8 long instead of 10mm. Are there someone that has indicated a model Diesel (that is not a diesel)? What is max pressure?

OK. Let us agree on some numbers. Bore and strokes in mm please. The two pistons need not have same diameter,but same mass Big end bearing size(Crankpin dia) Conrod mass Conrod hole distance Piston mass.

Hello Patrick Are You still interested in seing and diskussing V twin crankshaft proposals? I have speculated a lot many years ago and like to explain. Niels

Welcome Most likely problems are the piano that controls the rpm and direction of motor and that the gearbox selector forks,made of toothpaste are broken. Solution? Three phase AC motor and converter The toolholder system is very flexible and web is full of drawings of how to make it more rigid

A range of 5 to 50 kW Range Extender gensets will surely be needed. Fuel either compressed natural gas or hydrogen. On roads with more than say 100 cars and permitting higher than 50 miles per hr ,cheapest and best propulsion system is nuclear power and pick-up electric contacts on road. For...

A sure way to get rich and famous. I tried and failed so field is still open. There is an obvious need of having an si combustion engine that generatec 5 to 50kW electricity using alcohol,petrol, CNG etc,ect. for reserve and range extending in electric cars. From first principles it can be...

Let me phantazize: A single cylinder SV Two stroke that runs half the mean effective pressure of a fourstroke give same power at same rpm and has to endure half the maximum pressure. The big ca 20 horsepower /540 ccm/ 60 rps/94mm bore/78mm stroke four stroke OHV singles can be substituded by a...

I assume You refer to the 500 ccm single cylinder from B&S with ca 17hp at 60 rps and around 30 kg mass. What is the anti vibration system and do You have diagram of installed measurents. For my own pleasure I will scheme a better mousetrap but wonder if the two cylinder V engines sell better.

I have dreamt of a side exhaust valve two stroke with normal less than one percent oil/petrol crankcase lubrication. More even fire,lower mass,lower fuel consumption etc,etc . What are the Google search terms for these B&S motor turned bombs histories mentioned? Future lawnmover engine Turned...

I put a homemade spindle with 28mm hole,ER 40 thread and cone in a cheap chineese 180 lathe. Cone and thread was machined in situ the Schaublin way and surprisingly accurate. Cheap and accurate The screwed on four chuck was once started fast in reverse. I swore never to use screwed on chucks...

A start for glow head engines interest can as well be SAE paper 2002 -01-0115 Olaf Erlandsen, Lund University ,Sweden. The term Semi-Diesel is nonsense. Invented by marketing. The Exhaust smells completely different to a diesel engine. I got paper as pdf 260kb document from mr Erlandsen 2004...

The model live steam locomotive fraternity are getting thermal efficiencies 1 to 2 % from less than 500W locomotives. Coalfired boilers with up to 5bar internal pressure. Numbers here Small Steam efficiency With dry wood available , a small suction gasgenerator with a combustion engine was...

There was a picture of a wet sump ,sidevalved two-stroke twin since removed. Clean twin,two-stroke

A recent phantasy with thumbleweed compustion space and exhaust as a very good fourstroke and much less NOx An old 40 times 40mm and the new 34mm bore 48mm stroke compared sizewise

New thread please. How to make a bigger spindle for a VF280 for example

Open a new thread and tell us what lathe You have in mind and what diameter bearing holes it have. Do not worry about backgear. It is so last century I am totally converted to Industrial sewing machine motors that do not make very much noise and have basement torque without end.

Lovely to having interested listeners in my age. There are two sizes and it will be messy to mix them. A lot of small lathe headstocks have two 62mm holes for spindle bearing outher ring. Among them WM180 that maybe is not manufactured anymore. 62 mm holes can house bearings allowing 30,35 and...

I have changed quite some lathes for bigger spindles and less noise Some very short videos with sound here Improved lathes

This is first mentioning of my two stroke sidevalve idea I think 23 dec 2014. It has been taken serious Better late than never