Messages

341

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: July 07, 2010, 06:57:04 PM »

Steve ,
if the cam lobes are individual pcs. soldered on a shaft , then why not do the lobe profiles on the mill. Bore the shaft hole first , and clamp thru the bore to hold , and machine the profile. Lot faster.

Not faster if you want a radiused flank. I am not a fan of flat flank camshafts. With the curved flank i am able to run a flat bottom lifter. If i mill a flat flank, i have to make roller lifters. They are fine for low RPM engines with a ball nosed lofter.

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Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: July 07, 2010, 06:53:55 PM »

Steve do you have a 4th axis for your mill?  Cranks and Cams are fairly easy with a 4th. You can turn the blanks in the lathe to rough out and do all the offset work with the 4th. In bigger stuf we used round for the blanks to save time then did all the work on the mill and 4th

No 4th axis.  I could probibly cut the one off piece in less time as it would take for me to figure out the Gcode.  I'm getting by with Lcam and cant figure out cam bam or any of the other cam programs. I'm fresh out of 30 day trials.

343

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: July 05, 2010, 05:55:15 PM »

So how are going to grind / do the cam and crank?

RICH

I intend to do the crankshaft on the lathe from some 1 inch square bar. The cam will also be turned in the lathe in a fixture. I wrote an article on making camshafts in the lathe using a chart to keep track of when and when not to cut the lobes.

http://www.mikes-models.com/camarticle.html

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Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: July 05, 2010, 03:54:33 PM »

345

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: July 03, 2010, 09:55:40 PM »

346

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: June 27, 2010, 04:43:54 PM »

Question, how are you porting the block for oil passages?
 That's  the one thing the guy that did the roules Royce airplane engine would not divulge.
Is a car in the planning?

I am not running a pressurized oil system. It will be a splash system like a Briggs Stratton. Once in a while the valve covers will need to be removed to lube the rocker arms. If you look at the bottom of the 4 pockets, there is a slot milled about .200 deep in the center of the pocket. When the cam tunnel is bored, those slots will break thru and oil will reach the cam and lifters.

No car planned. I will spend the better part of a year building this thing. I would hate to smash the thing up in less than an hour.

347

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: June 27, 2010, 02:35:52 PM »

Bottom of the block is done now. Again using LC and Mach3.

348

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: June 11, 2010, 03:14:44 PM »

That's awesome. I think your gonna have lotsa people following this thread, myself included.

I just posted here to show the head because it was 90% CNC. There was some recent "bad press" with LC lately and I thought it would be nice to see what it can do. I have a thread at a model engine site that I update regularly with pics as i go along.


http://www.homemodelenginemachinist.com/index.php?topic=9609.msg105360#new

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Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: June 11, 2010, 03:07:04 PM »

I want to see this thing RUN ! Be sure to keep us posted.
What fuel will it be running on ?

Hi Russ!

It will run on gas. I dont need to but i use 110 octane "Turbo Blue" because it smells so darn good.

350

Show"N"Tell ( What you have made with your CNC machine.) / Re: Cylinder Heads

« on: June 10, 2010, 09:44:55 PM »

No CCing.  LazyCam RICH, LazyCam!!!  I love LazyCam!!