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This CNC model engine production amaze me but on the other hand i think it takes away piece of machinist workmanship. Last picture says everything - clean hand and finished complicated cylinder block. I do not want to offend anybody I am probably a bit jealous. P.S. I think in near future this...

Mirek naozaj krasne urobeny motor

In my 60 Deg. twins i have this cam gears layout.

Custom charges for China goods rised here /EU/ and kiled my China shopping. I was satisfy with quality of their goods. PITY

You are right 90 deg. Twin is a bit simpler for machining but i think that 60deg. Twin is nicer. I have question is there some advantage of 60 deg. twin opposite common inline two cylinder engine?. Ghosty sorry to interupt your thread .

Flywheels producer based in Germany http://www.bengs-modellbau.de/material/schwungraeder/

Finished engine. For maiden run I always use factory made carburator , brand new 4 stroke glow plug and propeller to cool fresh engine. Helpful is to paint one tip of propeller in TDC to know in which position the piston is. Exhaust end pipe is made from transistor radio telescopic antena...

Hello Gerrard where you buy fuel for your diesels? Here in EU I am not able to find a vendor.

What is working principle of this beauty.

Lubrication is oil mixed with fuel + small amount of oil in crankcase for maiden run.

Today only one picture. Here is nearly complete engine including engine holders. Next step /not needed/ is to blast surface of engine with glass pellets . Glass pellets leave much shiner aluminium surface than sand blasting and covers small imperfections and scratches. Intake and exhaust...

1.pic. blank head cover . 2.pic. drilling 2.5 mm holes for cover screws. 3.pic. milling decorative fins. 4.pic. milling angled rim for better approach to the glow plug. 5.pic. head cover glued to the cyl.head to be able to copy cover holes to the cylinder head. //I like this epoxy because of...

Thank you Hopper. 1.pic. shows small teeth pulley on the carrier shaft This is only for illustration how it goes together. 2.pic. carrier,belt and small pulley assembled in crank case. 3.pic. head gasket cut out from 0.4mm thick hard paper. /office file/ Everything ready for final engine...

Teeth belt tensioner. First cutting thread M3 for tensioner shaft 1. pic. Here is important to consider what direction engine will turn. In my case CCW. /if CW pulley must run on opposite side of belt/ 2.pic. tensioner pulley has gun metal bushing. 3.pic. assembled pulley. By changing...

To finish camshaft the washer needs to be "riveted" on the end of camshaft.1. pic. 2.pic. steel ball rivets end of shaft under press.

Milling lobes starts in 0 degree position. 1.pic. here is milling depth of lobe in my case 2 mm. Then secure height of milling bit for rest of work. 2.pic. milling lobe in CCW direction , turning lobe in 2 degrees increments till 120 degrees is reached. 3.pic. return lobe to 0 degree...

For milling lobes i have built simple fixture. Fixture contains stationary unit with attached protractor and rotational unit with attached arrow 1. pic. On 2. pic. is backside of fixture .On the top of orange cylinder /stationary unit/ you can see screw X by which is possible to fix...

Today just shaft with blank lobes. 1. pic. teeth pulley and shaft. 2. pic. checking if is everything OK before lobes milling. Material drill rod Dia 10 mm.

Epoxy is dry so I can copy head holes to the cylinder 1. pic. Black tape protects spring cavities away from drilling chips. 2. pic. Making threads M3 depth 15 mm. Next will be cam shaft machining - terrible boring job :(

Before drilling holes for screws which fasten head to the cylinder is needed the alignment of teeth pulley shafts. So I applied low temp. melting epoxy between cylinder and head , pushed rods through bearings in the crank case and in the head. Then I put rods on a glass sheet and by vice weight...