Second Engine-Littlemachineshop.com Oscillating Engine

[ccstudent]

Here is another build thread of my second engine. Its from the free plans found on littlemachineshop.com

Today I turned the top of the piston to .4990 (within the limits for the piston) and that was all. didnt have time to finish the shaft or drill the hole in the bottom.

Oh almost forgot, here is the pdf. of the plans.

http://littlemachineshop.com/Products/Drawings/2593OscillatingEngineAssembly.pdf

Enjoy!

 

[ccstudent]

here we go!

turning the piston

cutting the cylinder to size

cylinder 1x1x2

finished cylinder and piston minus two holes

 

[ccstudent]

now if i could have someone's help here. looking at page three(cylinder) the hole that is .250" deep and .875" from the bottom. what diameter is that? is that the hole that the screw goes in with the spring that holds the cylinder to the upright? that needs to be drilled .188-.193? and does it get tapped the 10-32?

 

[ccstudent]

more progress today. i turned the crank wheel and the flywheel. pics tomorrow. another question, on the flywheel it has the cutouts in it, the .125 deep that goes to the center and 2 inches out. is that necessary or is that more of a looks thing?

 

[chucketn]

You are correct, the hole is tapped 10-32 for the screw part #13. I built that same enging a few months ago.

Forgot to answer the second question. The relief in the fly wheel is both for appearance and to concentrate weight at the rim of the flywheel to enhance the flywheel effedt.

Chuck

edited to answer 2nd question.

 

[ccstudent]

more progress today. thanks to chucketn so i can finish the cylinder!!

In this photo you can see the flywheel,crank wheel, crank shaft, cylinder, piston, and crank pin are done!!

http://sphotos-a.xx.fbcdn.net/hphotos-snc6/231095_560034357357048_1861735197_n.jpg

extra: little mishap in the shop today. someone was using a part off tool to cut a groove, accidentally hit the auto feed on the compound. well loud boom and this happened!!!

http://sphotos-a.xx.fbcdn.net/hphotos-ash4/293749_560034350690382_843853548_n.jpg

http://sphotos-a.xx.fbcdn.net/hphotos-snc7/378462_560034354023715_1219612373_n.jpg

http://sphotos-b.xx.fbcdn.net/hphotos-prn1/534592_560034424023708_173404907_n.jpg

 

[dreeves]

Wow that had to be a big boom. If no one was hurt that is good and the cross slide can be replaced

Great work on the engine

Dave

 

[ccstudent]

yes luckily no one was hurt. my teacher already got all the info from the machine and is getting the cross slide ordered. all will be well!

 

[starnovice]

Nice job polishing your pieces CC.

Pat

 

[ccstudent]

Nice job polishing your pieces CC.

Pat

thank you!! its pretty easy. we've got a bench buffer/grinder, and it has two 12" pads for buffing. and it does it quick. specially with how nice the surface finishes are that im getting to begin with