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Hi, Was wondering if anyone had experience ordering plans from this site. https://www.engineman.de/product/plan-4-cylinder-boxer-engine/?lang=en Asked them a question but did not get a reply. Thanks.

Well, Apparently it was stupid of me to order plans from Modelltechnik-Jung. Funny thing is Its the first engine I have made that started rather easily. I expected a big struggle to even start it. It took me 4 Two stroke engines before I got one to run and this was my first 4 stroke and it...

Hi Mechanicboy. Ok I think I see your point. I did ask the designer for comment but have not received a response yet. So if I set the working angle to 125 degrees , the nose radius calculates to around 1.9 mm and the cam shape changes as seen in the diagram below. So the valves will stay open...

Hi, I'm just a novice I used an excel workbook that someone created and fed it values and it came up with a milling table. This is the first page of the workbook all values converted to inch's from the values from the plans. I thought it gave enough values to do the calculations. Base Radius 4.4...

Hi, I plugged the values given in the drawing into a excel chart that gave values for cutting on a mill with rotary table. Cuts every 3 Degrees , 120cuts per Cam. I did see the above movie but didn't quite understand it so I used the Method below following the cutting parameters calculated by...

HI, I don't really understand all the cam timing stuff I only went by the drawings where it states the following of the cam lobes in relation to each other. Exhaust Cam Cylinder 1 0 Degrees, Inlet Cam Cylinder 1 114 Degrees Exhaust cam Cylinder 2 135 Degrees, Inlet Cam Cylinder 2 249...

I adjusted the tappets and fiddled with the mixture and locked the throttle at half open. In this video the engine runs after removing glow leads until I had to stop it as a mounting bolt was coming loose. Some observations. It seemed as if it was running on one cylinder only since I could see...

Thanks Steamchick, I already had a fitting to connect a dial gauge to the glow plug hole to find top dead centre so I could do the valve timing. however I would not have an idea of what a pressure gauge should read as good compression. The design does not say what the compression should be.

i was thinking about that. When I was attempting to start it for the first time , while it was cranking and not firing I quickly covered the carby intake with my finger for a second or less and it would fire. Started to make it richer bit by bit, so I will continue to do that . The fuel is...

Got it running. Any body got any tuning tips?

Better Bends Cylinder head Completed model. I haven't run it yet I didn't have a setup to run two glow plugs at once so have to work on that now. The OS carb is from an Engine I purchased 40 years ago. That engine still runs, well it did when it had the carby.

Hi Started building V Twin 4 Stroke 35CC Engine from Plans from Germany. This is the same model Ghosty has built. Started with Crankcase In December Last year 2021. Built various pieces in an order I thought was appropriate for my skill level. The next images in in a bit of a random order...

Thanks Charlie. I have instructions with the device much the same as those you posted and I did remove the plastic ring. As suggested by others here I also trammed the mill again. I was comparing the wiggler , the Co-axial indicator and a norga style arm with standard DTI. The wiggler and the...

Hi, I seem to be having difficulty with my new Axial Centering dial indicator as pictured below, VS a wobbler also below. It seems to me that I get different results finding the center of a hole between the two devices and it appears the the wobbler is more accurate. I say this because when...

RS components have the belt 144 teeth. Is this not it? https://au.rs-online.com/web/p/timing-belts/1821316/

I found some here https://www.ptparts.com.au/products/category/UIKUFRHV-3mm-htd-series-timing-pulleys

Hi, I am watching this as I start my own build of the same engine. Shouldn't the carby be facing rearward. Not sure how hard it is to get to the throttle linkage and mixture screw with it facing forward. I like the mount.

Hi Ghosty, I Just ordered the plans for the exact same engine. I will be sure to keep watching.

Hi, I sent another two emails and this time got a reply. The plans have shipped so I am content now. Just got concerned because I was not getting email responses. Thanks to all respondents here.

Australia.