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  1. O

    Mery Explosive Engine

    1089 shows the cam gear. Drawing calls for .281 dia. shaft with 1/16 key. I do not have a 1/16 broach so silver soldered a bushing to the shaft then turned to 1/2in. and machined for an 1/8 key which I have a keyway broach for. Kit includes casting for eccentrics ,however it was easier to...
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    Mery Explosive Engine

    Set up to machine the faces for the inlet (explosion) chambers to use as a datum to bore the cylinder barrel. There are protrusions inside the barrel to locate the liner so this is an interrupted cut taking many fine cut passes. 1097 shows turning the O.D. of the liner to be a shrink fit(.002)...
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    Mery Explosive Engine

    Pics 72&73 show the crosshead and conrod. Must have forgotten to take pics of these while making,. The conrod is straight forward turning a taper between two square shoulders. The crosshead is nerve wracking! The bronze shoes on the cross head are each held in place with a single 4-40 stud and...
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    Next Project

    That is AMAZING. Wow wow wow!
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    Mery Explosive Engine

    I prefer the look of crankshaft with counterweights rather than plain "blocks" as called out. Cut two discs of appropriate size then set up on rotary table to add features as desired. Shafts are 1/2" TGP steel .#1064 shows spacer blocks to hold parts together for silver soldering. Once soldered...
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    Mery Explosive Engine

    Picture 1041 shows the set up to locate the centre line of the crankshaft. I made a plywood fixture to hold the frame at 45 deg. to machine the bearing seats. Take time to set fixture accurately to all 3 axis. 54&56 show set up used to drill and bore for main bearings and camshaft. At this point...
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    Mery Explosive Engine

    There are 3 machined tabs on the frame that I assumed were made to parallel the bore, NEVER assume. All set ups were made with this as datum. The end result is that the bore "slopes" approx. .015 toward the crank end. This did not appear to be a major disaster at this time. Further work on the...
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    Mery Explosive Engine

    Marvin: this is a kit from Martin Models in Oregon I received it in the mail in Feb 2022 and began the build in March. The first things to do were to make a boring bar and table to fit my12x36 lathe in order to bore the main housing and cylinder. There are good drawings with this kit but...
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    Mery Explosive Engine

    In the cold hard light of the next day , I have found that the covers to the explosion chambers leak, the flywheel needs better securing to the crank, the inlet valve springs are too strong, cylinder oiler needs a redesign ,and on and on, but yes, a start on the first day of trying seems to...
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    Mery Explosive Engine

    This is a video of my Mery engine's first run. I started building this in March 2022. There is still MUCH to do to finish and tune this engine, but a runner on first attempt is always a good thing! Colin
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    How to post a picture.

    WOW, I wanna see if this works! This is my latest - it's a Mery!
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    Dry milling aluminum in general and 5154 in the hobby

    terryd Was one of the cars in your fire a Triumph Stag? Just curious, tail lights look familiar to one I worked on years ago. Thanks Colin
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    Mery Explosive Vapor Engine: Getting 'Er Running

    Propclock : Good to see a Mery engine running. I'm currently building one and hope see it run by Christmas. Does the cylinder oiler have a cap? Does compression blow the oil out? What oil are you using? What ign system are you using? Thanks Colin
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    Mery Explosive Vapor Engine: Getting 'Er Running

    Carl; I have just started a Mery build. Do you have any pictures that you can post? You are waaay ahead of me! Let us all know your progress please. Colin
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    Stuart triple timing

    Steamingandy: I built a Stuart triple last year. My drawings showed a 30 degree offset for HP cyl and 15 degree for IP and LP . Couldn't get the d--- thing to run forward and reverse on comp air with this set up. Made IP with 30 degree offset and eventually made separate eccentrics for LP...
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