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Thank you Grasshopper I am planing to hard solder crankshaft web for my straight 4 cyl. in oven . I hope that evenly heated crank web will not be bent .

I have not tried to build new crank because now I am working on different project. Please inform us about machining your V4 crankshaft + do not forget to take PICTURES.

Hello davidyat Did you heat crank web joints step by step or completed web at once . Your silver soldered joints are perfectly done /reflowed/

Hello Chuck Thank you for your answer . I use Loctite quite often but for 4 cyl. crank shaft I do not know ??? I have to learn TAPERED DOWEL technique maybe this is way how to build more complicated crank. I will probably try to hard solder all parts at the same time in oven not journal by...

Hello friends I would like to ask you on your opinion or what do you think about machining crankshaft from parts. I have tried to build crank for my new 4 cyl. engine by this "method" but unfortunately crank is slightly bent so I did something in wrong way. All parts are hard soldered together...

Interesting method How long did you grind off material for eccentric pin and did you cool crank during grinding ?

Looks perfect , can you send more pictures from crank machining

Hallo friends I have finished this engine

Stef it will be really nice engine. Keep posting pictures.

Excellent I have sent you personal message.

Hello ABBY thank you for your excellent explanation of casting process but you know people will always TRY to find new easier way for making anything under the sun. I have found this video Portland cement mould RAVIV do you have two spare cylinder head castings for sale ? I would like...

Chocolate pattern ? ? ? not so stupid idea. Foam is porous material , I think , by using this is not possible to cast smooth surface. Maybe Im wrong.

Hello guys I am looking for cheap casting process because electricity bill for firing investment at 1300 C would ruin me. I use practically the same process like RAVIV but for lost wax casting. I think that good mould must breath out hot gases this is why I cover wax pattern with tiny layer...

John please could you send detailed Rocker arm picture ? Thank you

Hello John Beautiful engine real masterpiece . 10.6 cc/8= 1.3 cc per cylinder. My rough guess The cylinder bore is 10 -12mm ? In such small combustion chamber are two valves and spark plug - it is clockwork . I have similar problem . I have built 1.1 ccm single four stroke glow engine but for...

tears in my eyes .

Hello there Where is possible to buy this kit ? I wish you nice and smooth building work time.

Hello Arduino Uno GRBL

How it works

Hello friends I would like to show you my new toy Arduino based router. This router is quite unusual because it can work in two modes CNC and Manual. Manual mode is just for simple operations no need to write g-code. All axis fitted with DRO . For my learning purposes the pen is attached to the...