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Thank you Chuck, The ignition module arrived and I transferred the soldered wiring over to it similar to what I did before. I added an aluminum clamp and grounding block (yellow arrow) to make sure I didn't forget to ground the SS sheathing and burn out another module. The engine likes...

The replacement Rcexl twin fire ignition module is on the slow ship from China making it over to Florida. I was really tempted to go a different way and buy a dual output coil with a TIM-6 CDI box. I'll give this Rcexl another try though. I'm pretty sure I shouldn't have tried sparking it with...

Good News I got the engine running fairly reliably and shut it down because I didn't have the cooling system connected and the ignition was just laying on the benchtop with alligator leads connecting everything. Fabricated an MDF baseplate with a raised area to support the water pump and screen...

You are welcome. I believe I saw it being used somewhere else and thought the same. For 1/4 fittings this holding fixture is 5/8" square and the holes are 5/16 through, and 23/64" for 1/8 deep at three places. The side hole is 5/16" from the end. I used two #8 SHCS to hold it together while...

Plumbing & Gaskets PM Research sure does make some beautiful cast bronze fittings so I purchased the 90 elbow trees to eliminate some of the silicone hose on the cooling circuit. I made an aluminum fixture to hold the elbows and ensure perpendicularity when drilling and tapping. Sealed the...

I did have to remake the spray hood to get the water to trickle down the screening. I switched to aluminum to save weight so I could eliminate the brass tripod supports. The spray hood is made up of 7 parts including the #6-32 SHCS that secures it to the mesh cone. It is assembled using epoxy...

Cooling Pump There is a plan for a centrifugal pump included in Doug Kelley's book. I started the build by drilling the bearing cavity, tapped mounting plate holes and the radius' for the feet. Then centered it in the 4 jaw and machined the shaft bearing profile. I was then able to flip it and...

The fuel tank work continued very well using the plumbers acid flux and 3-1/2% silver solder. Hardest part was the two gauge glass fittings. I would fabricate these parts using solid round bar and thread everything before drilling the internal passages next time. I had to use a 3/16" transfer...

Thank you Ray, I'm building the water pump now so I can try out how well the water will spread across the screening. Might have to modify the upper dome or spray ring. Added a band of brass half round to the tank to simulate the stamped sheet metal look. On the first attempt, I soft soldered...

Thank you Chuck Fuel Tank I would like to try a different kind of fuel tank for this engine. I remember the old steel fuel oil tanks that people had inside their basements up North for heating. Just so happens that the dimensions are available online so I could get the correct aspect ratio for...

Just finished fabricating a small copper screen cooled tank for the Nash engine chronicled on this website elsewhere, but figured I would post a picture in this thread also. build link Made this tank from slitting open a piece of 2" type M copper pipe, annealing and splicing together to get...

Screen Cooler Tank I didn't seem to come across an empty can that matched the dimensions I wanted, so I salvaged a heavily tarnished foot of 2" copper pipe and a coil of 1/8" icemaker line to see what could be done. Slit the copper pipe lengthwise with a hacksaw in the vise, and then heated it...

Thank you Brian, Appreciate the compliment and hope your knees recover quickly Exhaust and Intake manifolds both of these parts are made from brass with the internal passage ways cross drilled and then plugged and silver brazed. I couldn't find any small carburetors similar to what was called...

I will try and remember to post earlier next year about the show. I do look forward to it each year, but I lose track with holidays and other events. There is a show coming up again in February for those that regret not getting there. The large engine hall has two engines that would be...

Flywheels continued..... I followed Sprocket's advice on the small split parts that clamp the flywheels to the shaft. Easier to make a square out of round. I had a short piece of 1214L which machines so nicely, I always swear I will use nothing else, until I walk past some beaten, rusting...

Fascinating bit about the hot tube igniter in the Boy's Book of Engine Building. Such a simple idea. I guess I never believed the "pilot" flame that keeps the tube hot would scale down to model size (stay lit). Has anyone you know of attempted to use this feature? thank you for the link to...

Spotted a IHC air cooled famous vertical engine that would make an interesting model. I liked the curvy base and finned cylinder. It has small cylindrical fins on the head that look like those stalagmites that are formed in caves. Also noted the valve goes through an exhaust elbow that is...

Thank you very much Jason B, I will follow your lead on the overflow pipe versus weir when it comes to building that style mixer in the future here are some images of a very fine Root & Van der Voort engine I saw at the recent show happily running while making delicious ice cream. The trailer...

Hoping to add a smile to someone using that line of dry humor. I may leave this Nash base as is because of the patina also. Still quite a way to go. The feet were made in pairs using 3/8" cold rolled steel. I drilled the mounting holes small at first so I could use the rotary table arbors I...

so does the bowl/chamber have a built in weir or dam that allows some fuel to be inside the mixer as an inlet to the needle valve and the overflow returns to the tank under gravity?