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hello fakeshade wEc1 if you look in the downloads section of this website you should be able to find some plans for some simple engines. hope this helps chuck

now that is one neat looking lathe 8) when i first got my 9" south bend lathe i added dial gauges to it and it made the lathe allot easier to use. please keep us updated on the progress of your tool holders (if you can). thanks for showing the pictures of this nice little lathe. chuck

i have several model hit and miss engines that run just nice without rings, but the cylinder and piston are both made out of cast iron so the expansion rate should be the same. i lap the bore and then lap the piston to fit, and i give the piston about .0001" to .0002" clearance. the engines...

well i managed to get the dro installed on the lathe................ and what a treat it is :o next i will get one for the mill. i got the 3 sleeves pressed in to the cylinder jugs and i started cutting them to length and boring out close to the final bore size. i will leave the bore .002"...

welcome lone watie wEc1 chuck

AYE chuck

it is very sad to hear this news john, take care. chuck

thanks for the kind words guys...........it helps me stay motivated hearing from you all. :) no work done on the engine tonight, but that is because my wife let me buy a d.r.o. for my old south bend lathe!!! ;D now i just have to get it all installed and then get back to work. the wife also...

well it has been a long time since i last worked on this engine, i hope to see this project through to the end this time (but one never knows) first i have to admit that i messed up the original cylinder castings (all 3) i didn't have a rotary table to index all the bolt holes. these bolt holes...

john you might want to ask brian rupnow about that mill as i think he has one. chuck

it would have to exert pressure on the part thus forcing it on to the tool while still rotating as it nears the end of the cut as Tel said with the chance of it either breaking the tool or forcing it into the bar stock or damaging the part off face of the part wow i never would have thought of...

great work as always dave :bow: i thought this might help you with the half nut repair http://www.practicalmachinist.com/vb/south-bend-lathes/repairing-half-nut-threads-129446/ i repaired a set of half nuts for the first 9" lathe i had and i just built up a bunch of brazing in the threaded...

that video reminds me of a guy i used to work with. he was running the lathe in reverse and could not figure out why he could not cut the steel he was trying to turn down. after pushing the tool in to the steel more and more the carbide insert popped off and landed in his open shirt. i guess it...

excellent build and engine :bow: :bow: chuck

i knew you could do it brian :bow: so what is next on the build list..............a clock, after all it uses lots of gears. i/we await your next project. chuck

very nice george, what is the bore size? chuck

well here you go rick. the big nut is #6-32 and the small nut is 00-92 not 00-90 i cut this thread on my 9" south bend and it only has 92 threads to the inch not 90. with that in mind i remember making a 00-92 tap for the nut but i cannot find the tap >:( if i find it i will post a picture...

the tailstock thingy is just that...............a tailstock hope you feeling better :) chuck

00-90 nut and bolt is the smallest i have made, tapped the nut but i cut the thread on the lathe (under a microscope) chuck

thanks for sharing................modifying machines is fun and it makes them more functional :) i bet if you look around on the net you will find a bunch of mods you can do to your lathe. have fun chuck