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I am building Jan Ridders Simple 2 stroke (Debbie). The engine runs but takes very careful fuel metering. This is rather difficult given the vibrations. I am thinking of replacing the screw air-bleed with a needle valve in an attempt to get smoother running. Can anyone point me in the...

Next up I will be building the Nemett Lynx. I am not excited by the process of making the piston rings. I would rather see if I can locate some suitable items, much like people do with nuts and bolts or carburetors in some instances. On that basis I am on the hunt for any ready-made piston...

I have been building a Simple 2 Stroke (Ridders) and I am wondering if there are any rules of thumb in terms of compression. I am not exactly sure how to measure the running clearances of the piston to bore (feeler gauge seems a bit crude). Telescopic gauge is not repeatable (I do not have...

I am currently machining Jan Ridders Debbie 2 stroke engine. It has struck me a few times that I have no idea what the general tolerance one is expected to hold when machining these parts. What tolerances do you generally hold when machining shafts and rotating assemblies? Bores? and General...

I am thinking about purchasing a simple ignition system for a Jan Ridders 2 Stroke "Debbie" engine I am building. The system I am looking at is the Rcexl Single Cylinder CDI Ignition. Is there any reason why I should steer clear of this system? It looks to do the coil and firing work, leaving me...

I am building Jan Ridders simple 2 stroke. I am however unsure of a good way to affix the brass end caps to the vapor carburetor fuel tank. Apart from some electronics here and there, I am new to soldering. 1) Should I soft solder these (Tin/Lead)? 2) I do not want to mar the part with too...

Recently I cut an M6 thread on my lathe (12x36 - AL960b/G4003G). Unfortunately the part was deflecting and I ended up with a thread that the bolt wobbles down. It does not seat flat. I figure that there are a lot of people working successfully here with fine small diameter threads. There must be...