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PM Research sells a Lunkenheimer-style mixer that fits 1/8" NPT. Would that work? Lunkenheimer Mixer - PM Research John

Beautiful job. Love the F Rumelys!

I decided just to go for it, and made the fixes as described in my previous post. I used 2 #8 screws to secure the throw to the shaft, and 1 #8 to secure the pin to the throw. It looks pretty good to me.

The little Stickney is back together and essentially complete, except for some work on the ignitor. I've set it up for spark plug ignition, so the ignitor work can wait. I tried to run it and got a few putts. But then I discovered a serious issue. The crank throw, which is supposed to be a...

I'm finally getting back to the little Stickney after a hiatus of 9 months or so. It's starting to come back together now. Last week I assembled the crankshaft, base, eccentric shaft, and flywheel. Yesterday I assembled the piston, sleeve, cylinder casting, and top casting.

I got distracted by other things, but finally got back to the cam gear. I broached the gear and cut a keyway in the shaft, 180 degrees opposite the set screw as suggested. I also milled a flat for the set screw to bear on. It was my first attempt at cutting a keyway in a shaft. I'm happy...

That's a good point. I took a closer look at the hub, and after subtracting half the thickness of the key, I'm not sure there's enough "meat" left for the screw. The drawing actually shows the key and set screw placed 180 degrees apart, but I don't like that because the burr left by the set...

For the past few months, work on the little Stickney has taken a backset to other projects. I'm trying to get back to it now, before I forget how it all goes together :) . The plans call for a key as well as a set screw in the cam shaft gear. The builder drilled and tapped the gear for a set...

The flywheel bore & crankshaft on the Harvard/Stickney Jr. model are straight. John

I like the idea of a second screw, but unfortunately the hole is not deep enough. When I eventually get the engine running, I plan to keep an eye on things and if the screws have a tendency to loosen I'll try Locktite or the nylock screw you mentioned. John

Thank you for the kind offer to scan the plans, but I think that might infringe on the copyright and I would rather not go there. Have you been in recent contact with Mrs. Stuart? If so, can you please send her contact info (email if possible) in a PM. I can contact her to see if she can...

That's really interesting; thanks for posting! I just looked at my drawings and they are all dated 11June1988, and only sheet 12 (Ignitor) is marked with a revision (A). The intake valve material is not specified on my drawing. Does your drawing set include plans for a cooling tank? Mine...

Thanks for the response. I decided to position the set screws so they bear on the key, which I'm hoping will avoid that problem. Now that spring is here, I've been busy with other things and progress on the Stickney has been slow. I did lap the valves as mentioned in an earlier post. I put...

Slow going, but making some progress. I made a new connecting rod and wrist pin, drilled/tapped a hole in the cylinder for an oiler and made an elbow for the oiler. Also stripped the paint and cleaned up the parting lines on the castings. Drilled/tapped the flywheel for set screws (positioned...

Awake, thank you very much for your reply. It is most helpful. Just to be clear, do your set screws bear directly on the key? On my engine, the drawing shows the set screws positioned 180 degrees opposite to the key. I wonder how much difference, if any, that makes? I suspect that they'll...

The plans call for two 10-32 set screws in the flywheel hub. The flywheel has not been drilled and tapped for these, so I need to do it. The plans show the set screws orthogonal to the crankshaft, but the only way I can envision doing this with the equipment I have is to tilt the flywheel 20...

Does anyone have a close-up of the top of the engine, like the picture below? I think there should be something to hold the valve cage down, and would like to confirm this. Whatever it is, is missing on my engine. John

The spark plug port is called for on the drawing, so I thought I might as well put it in while the engine is apart. If the ignitor proves troublesome, I'll still be able to run the engine and have fun taking it to shows. If the ignitor works without issues, I can always put a plug in the hole...

Pretty well reduced to bits now. I was really happy that the main valve body (i.e. head) and cylinder sleeve were relatively easy to remove. This will make it much easier to add holes for a spark plug and cylinder lubricator. The connecting rod has an offset of approximately 0.100", which I...

Dave, that's a really nice looking model. Is the coil (the one under the tank) functional, or just for show? John