Building Hit or Miss Claire Engine

[Jack B]

Two quick shots of the Governor Exhaust Cam Unit. I put the micrometer in to give an indication of scale. This is the Cam side of the unit. I still have a few small holes to put in this unit.

This is the Governor side of the unit. During machining these two sides were kept in perfect relationship with each other. A half moon shaped swinging piece will attached here to control the RPM's of the engine. Jack B

 

[Jack B]

This is the blank for The Governor Weight. Two angles and a !/8 ream hole on an angle must be laid out in one set up. Easy to do with my home made scribe and K & T dividing head. I have not shifted my milling table dials or my dividing head dials. So it was easy to bring the set up 3/8 hole back on zero center. Jack B

 

[Jack B]

The white cut out piece of paper shows the red part of the Weight that will be removed.

This is the dial I work with on my K & T dividing head. One complete turn of this dial equals a movement of 9 degrees on the dividing head. I know that this is a huge piece of equiptment and there are parts missing. It was on it's way to the scrapper and the man who owned it asked me if I wanted it. The first job I did with it several years ago was to remachine a spline shaft for a Caterpillar tractor transmision. It was hardened steel and required a 1/8 carbide endmill. It took me over a week to do it and the matching spline plate fit it perfect when I took my last cut. The minute you turn the crank you can feel the quarlity built in the K & T.
I only had a short time in the shop today so I didn't get much done.

 

[Jack B]

The angle lines for the cut out on the Weight is drawn. Now the 1/8 ream hole is being center drilled on a 45 degree angle.

 

[Jack B]

The 1/8 ream hole in the Weight is being drilled and reamed on my old Buffalo drill press.

 

[Jack B]

The 2-56 threaded hole in the Governor Exhaust Unit was also positioned and center drilled in the K & T dividing head. It will line up with the 1/8 ream hole in the Weight. Jack B

 

[Jack B]

I have put the K & T dividing head in horizontal mode to make the Indexer. I have turned a blank to fit the set up plate that is already mounted on the four jaw chuck. This plate turns my dividing head into a rotary table. Now it's being used as a dividing head again. I have to cut an octagon on the blank as well as eight evenly spaced ratchet teeth.

Caam10 Here is a close up of my set up to make the Indexer. Thr dividing head was trued up with indicators. Jack B

 

[Jack B]

Using my edge finder to find center and start position. You can see the shape of the part on the print.

 

[Jack B]

The two end slots are first. 3/16 endmill. Very light nibble cuts in the center. Then index dividing head 90 degrees. Everything going good so far. Jack B

 

[Jack B]

Eight saw teeth are next. This type of milling takes a while. The edge of the face of the cutter must be exactly on center. The red marks on the plate were for positioning on another job. Jack B

 

[arnoldb]

Hi Jack

I've been on the lookout for an IC engine to build, and last week Phil Duclos's "Maveric" caught my eye as a potential build. When I saw the indexer plans and your last couple of photos I thought it looked familiar, so I went back to the start of your thread and saw that it is indeed the Maveric you're building.

Keep up the good work; I'll be following your progress!

Regards, Arnold

 

[Jack B]

Hi Arnold: You are right this build is the Maverick by Phil Duclos. This is my second engine. My first was a horizontal steam engine. Video Nov. 21 2009 on this site.
I found the Maverick to be more difficult to understand the drawings and to machine the parts.
I live in Massachusetts and this July we have had a severe heat wave. My shop is heated for the winter and is usually pleasant to work in during the summer. But this year it has been very humid so I had to cut my time for working on this project. I will keep posting as I go along. Thanks for commenting on my build. Jack B

 

[Jack B]

I am now producing an eight sided octagon. It is slightly wider then the finish size.

Close up of cuts.

 

[Jack B]

Finished Indexer before being cut off in lathe.

 

[Jack B]

Start of Indexer Screw.

The weather is still extremely hot and humid so I am working short bursts in the shop.

Three diameters completed. It will also have a 5-40 thread.

 

[Jack B]

In order to cut the screw driver slot with a hack saw the screw is held in a toolmakers ball.

Indexer Cam in position under Exhaust Valve. Weather temperature still very hot. One hour is enough to work.

 

[Brian Rupnow]

Well Whaddayaknow---I was just asking about the Maverick engine this afternoon. I didn't know that there was one being built on this same forum. Now I will have to read it all and follow along!!!---Brian

 

[Jack B]

Hi Brian: This is an interesting engine to build. It has been very changeling on the machining part. This is my first IC engine so I am feeling my way along.
Anyway welcome to my build I hope you find it interesting. I have slowed down because of the heat wave we have had here. Us older machinists (76) have to take it easy on the hot days. Jack

 

[Donrecardo]

I am now producing an eight sided octagon.

Is there another kind ? ???

 

[Jack B]

Is there another kind ? ???

Yup! Could be: Hi Don

If I miss my mark as I count my turns on the old K & T it's possible to get an extra side. But as it turned out I got the usual 8. Jack B