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  1. M

    Base casting for Lil’ Brother engine needed

    Well, they guy who gave me the castings also found the base and the prints. Here is a partially complete family shot. I made the heads a bit thicker to recess the spark plug and get it closer to the combustion chamber. My exhaust comes out the side of the head as per water cooled version…my...
  2. M

    Stuart 10v from a year ago

    Finished this over a year ago and finally got around to sharing it. I tool a little mechanical license and replaced all the fasteners with UNC/UNF made from 330 stainless hex. During construction the bridge casting has some super hard spots. I contacted Stuart and they graciously sent a replacement.
  3. M

    1/8 scale rider-ericsson

    Some fine additional models on this thread. Well done gents. I used my friends Sunnen hone to get the bore dead true then sized the piston for a half mil clearance. Still, it took several sea trials to get running decently.
  4. M

    Wanted Wanted: base casting for Breisch Lil’brother air cooled

    I have all the parts for this engine except the base casting. Anyone have a spare they wish to part with? Can buy outright or swap for machinists goodies…PM if you do.
  5. M

    One third scale Ready Motor work in progress

    I think I know Graham’s plan…mine was to make the breech plug into a spark plug and use a bbq ignitor to light the pilot flame. In this video, you can hear the ticking of the spark plug, then the flame light and the dull roar through to the exhaust.
  6. M

    One third scale Ready Motor work in progress

    Thanks Graham. Mine has a 2” bore. What size is yours planning to be? The pilot flame chamber is about 7/8 diameter x about 0.4 high.
  7. M

    One third scale Ready Motor work in progress

    I started on this back in 2019 as a project to teach myself CNC. I went to view and measure the original Brayton engine at NMIH in Bethlehem. From there I used the CNC to make all the patterns. It is a unique engine in that it is a constant pressure combustion cycle. You get a pilot flame...
  8. M

    Base casting for Lil’ Brother engine needed

    I have a set of castings for the Lil Brother IC engine which is missing the base casting. I tried Ministeam but they are out of them. Anyone have a spare from a partial set of castings they wish to sell or trade for?
  9. M

    1/8 scale rider-ericsson

    Setup for machining the mating surfaces on flywheel support to ensure they‘re parallel to crank axis. The casting is shimmed to get best fit before boring for the crankshaft bearing.
  10. M

    1/8 scale rider-ericsson

    Only bothersome thing with this build was making the link from the crank pin to the walking beam. I had to offset the shank to one side to get it to fit correctly. I think this was because of how I positioned the flywheel support on the base to make things “look” right and have the bolts...
  11. M

    1/8 scale rider-ericsson

    This one took about 6 months to complete. Made all the hardware out of 3/16 SS hex stock. Re-engineered the pump piston to have a sliding check valve instead of the tapered piston in the drawing. This is its second run on Christmas Day 2021.
  12. M

    1/8 Rider-Ericsson casting info needed

    Picked up a set of castings for the 1/8 Ericsson made by Meyers. I have no plans for building the engine and was wondering what was the stroke of this one. I’ve made several hot air engine models in the past and with the stroke, I should be able to complete it. Any help appreciated.
  13. M

    Hard spots in Stuart 10v cylinder support

    Update: I contacted Andy at Stuart and he graciously sent me a new standard casting to replace the one with all the hard spots. This one was much better and I was able successfully bore the ways and finish it up today.
  14. M

    Vertical side shaft engine

    The patent Dave found has a lot of similarities. The rotating electrode in the cylinder and it being driven at half speed makes me think it is pre-1900 also. The three holes in the flywheel spokes may have been for a drive pulley. The crank handle is an afterthought. NICE early piece of iron and...
  15. M

    Hard spots in Stuart 10v cylinder support

    Thanks gents for the replies. I did a search and someone on on of the live steamer boards suggested putting the casting in manganese dioxide powder in a sealed container and heating to red heat and slow cooling. I’ll try the heating the part sans powder first and if that doesn’t work try the...
  16. M

    Hard spots in Stuart 10v cylinder support

    Working on a 10V as a filler project. Problem is I’ve encountered several hard spots in the arch casting making accurate machining of the guide ways and cylinder flange difficult. Is there any thing I can do in the way of heat treating the casting to help soften then up?
  17. M

    Which metal for nuts and bolts?

    Not at all Bob. A good friend got me making all my fasteners out of 303 hex to replicate the old style high crown hardware. It machines and taps easily while still looking great years out. Is it a PITA?...yes, but you’ll only make them once. Of course you could always source commercial SS, but...
  18. M

    D valve wear and choice of metals

    I’m working on a small plunger pump for a model I’m building which has a spring loaded D valve to shuttle fuel from the plunger to the delivery port. For scale, the d valve is a 0.25” cube. The body is made from zinc-based yellow brass and I’m looking for opinions on what to make the d valve...
  19. M

    Belts for Mini Belt Sander

    Got mine off Flea Bay. 1/2 x 21” going for $20 for 25 Of them. Though cheesy, I find it great for sanding castings like flywheel spokes. They do last a decent amount of time.
  20. M

    Breisch little brother air cooled

    Raised the fuel tank a bit and it certainly helped it running for longer periods. Tank is set up so when fuel is at 2/3 capacity the level is even with the adjustment screw on the mixer. Funny thing...when I let my friend know I got it running he said he had the water-cooiled cooled version also...