Recent content by radfordc

John Deere motor by Chuck Fellows w/PDF

John Deere motor by Chuck Fellows w/PDF

A drawing created from examining Chuck Fellows thread on building a John Deere replica.? This is done with a very old version of TurboCad (v6.5).? I also saved it as a DXF file.? Hope one of them works.

A drawing created from examining Chuck Fellows thread on building a John Deere replica.? This is done with a very old version of TurboCad (v6.5).? I also saved it as a DXF file.? Hope one of them works.

I got a Drill Doctor for Christmas and tried it out this morning. I sharpened a couple of sets of old drill bits and they all came out very good.

Yes, 10cc. Here is the head with the plug installed.

Finally got the head and rotary valve complete.

Very nice. That one on top is alot like what I've got in mind. Is the valve in that one just plain steel turning in aluminum?

Well, I made the first parts today...and made the first booboo! I made the cylinder head and it turned out good. Then I made the rotary valve and it fits the hole in the cylinder head perfectly....but I cut the ports wrong. I get to do it right the next time.

Search on ebay for cheap metal. I bought 20 lbs of 12L14 1.5" round cut offs for about half the going price. I've also found bargain brass and aluminum.

My earlier measurement wasn't accurate. After examining the old belt carefully I can see the code 3M300....I think.

Cummins 7877 Mini Mill, but I bought an aftermarket belt drive on Ebay several years ago that uses this belt. I think maybe the belt is a 3M300?

I've been working on the plans for this engine. I'm concerned about lubrication to the lower end. All the fuel/oil mixture is in the head and cylinder and none in the crankcase. The old Webra T4 engine also deal with this problem. But, I've seen two different versions of the Webra. One...

I bought a belt drive for my mini-mill several years ago and this is the belt that it uses. The belt is clearly marked "Gates 110". However, the only belt that I can find in the Gates catalog is the TruFlex 0110 that is described as being 1/4" x 1/8" with a circumference of 11". My belt is 11"...

The intake and exhaust both have a 3/16" diameter orifice at the smallest point. If it turns out to be a problem it will be reasonably easy to make another valve. The ignition and timing will be done with an electronic ignition with a CM-6 sparkplug. Upon reflection, increasing the size to 1/4"...