Search results

Today was my second day of break-in on a compression ignition engine I machined and assembled. Its the ML Midge engine. I noticed some exhaust gunge coming out where the compression screw enters the cylinder head (see the two photos). I was not expecting that. It must mean there is some...

I found a great webpage about how to mix fuel and techniques to start up small diesel compression ignition engines. But Im not sure of how long the mixed fuel can be kept and still be effective. Does it go bad after one day, one week, or what - stored in a metal tin can with lid ? here is the...

Here is a detailed look at what I'm writing up to machine various parts for the engine. In this case I'm working on the "Venturi" for the needle valve assembly. The ML Midge prints also show a rudimentary spray bar that doesn't have a valve seat, so the modelenginenews.org site suggest...

Im attaching my step by step process for machining the cylinder head of the ML Midge. Maybe Im too new but I really dont know how I could make it through the work without staying organized. Do these order of operations seem the best? Does anyone else have a write up like this for diesel...

Maybe its just up to the individual preference but I have seen a few articles describing the order of operations for machining cylinder fins. In some cases it looks like the holes used for bolting it down to the crankcase are put in after the fins are turned and sometimes its described as being...

Ive been studying techniques for machining crankcases, crankshafts, and other components for months here. In the last few days I noticed it was no longer available. Anyone know whats up? I dont know how to find it on a "wayback machine" either. Help?!

Machining aluminum crankcases for model airplane engines question (see image of ML Midge crankcase with my notes): There is a great article here about how to setup the work so the crankshaft bore is perpendicular to the cylinder, but I had concerns about the drill wandering too much during...

Im studying 2 stroke diesel engine designs so I can make one. For the case where an engine is sold as diesel, there are options for "free flight" and "radio control". From what I can see the only difference is there is a slightly different carburetor (spary bar) with an arm so you can hook a...

i came across the motorboys plans a few years ago and I keep coming back to those designs. now Im gearing up to buy a PM-1130V lathe to get started making chips. I keep modeling engines and studying machining procedures. might even try sand casting some aluminum. even bought plans from...

Ive carefully read the build instructions at the modelenginenews site about how to machine the crankcase. In that text I saw there were some small metric to imperial discrepancies between the text and the drawing. Also some instances where the dimension scheme on the print did not follow the...