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Ok guys I have started machining but ran into a problem... I don't have any tools that will reach deep enough into the crank to cut the journals like they need to be... I tried using a small HSS tool but it flex's and I get a crazy about of chatter.... anyone else had this problem and if so how...

Thanks for the Ideas guys. Looks like I will be leaving lumps on the ends and just spot drilling 3 points for the live center.

I have little experience with turning crankshafts and none with multi-cylinder crankshafts. For some of you I'm sure this is a simple one but I'm having some issues. I cant figure out the best method for offset turning the connecting rod journals. I can offset the crank with my 4 Jaw but I need...

I would like to build one but maybe I can reverse engineer this one I have for a small RC car.

I just got done building a BollAero 18 and its a runner... the only issue is the carb. Its always wide open or nothing. Granted this engine was intended for a model airplane I will never use it for that. If there a design for a diesel carb that will allow me to change the RPM of the engine? I...

Dave, Thanks, I have been machining for a little over 2 years now. I am already planning a 2-4 cylinder for my next engine. Would like to keep it a 2 cycle diesel or glow but would really like to tackle a 4 stroke. Admiral_dk, I guess I should add a prop to it. I will have to see what I can...

I never thought I would be posting this in here. I got the plans from modelenginenews.org and started on it. the only thing I changed was that I used a 7075 aluminum piston over cast iron and I do not run model airplanes so I ended up fitting the engine with a flywheel rather than a prop. this...

I got the plans for the Bollaero 18 from modelenginenews and think I have a fuel that will work... Ether, Kerosene, and Oil all 33%. The issue I am having is I can see the engine is firing. I can see the smoke from the exhaust and the engine is heating up, BUT the engine will not take off and...