The Restoration Chronicles of 721
By Jerred Ruble of Hanlontown Iowa

I purchased this engine at Leonard Rynda's sale in May of 2004. The engine's number is 721, built in 1893. I have been told by a reliable source this is the oldest known Minneapolis engine left, but I have no way to verify this other than someone telling me my claim is incorrect, which I encourage anyone to do.

I received a lead about an engine # 512 thought to still exist. The engine showed up on the steam-tractors.com web site. After making several calls and one trip I discovered that all that remains of #512 is the cylinder with its name plate. I consider this as a remnant and no contest for my claim that #721 is the oldest surviving Minneapolis steam traction engine.

Here is a picture of the engine (copied from the steam traction site) as it sat for over 50 years at Montgomery, MN.

Engine at Montgomery, MN

I will attempt to provide a chronicle of the restoration on this page, updating the page as the restoration process continues. The work is being done at Heritage Park of North Iowa. This year's mild winter has allowed the work to proceed in the large unheated machinery building. You will notice partial pictures of other units stored in the building.

December 3 & 4, 2005

With the help of Brian Patterson and Eric Bremer, we removed the smoke box ends on both the front and the rear. Had to torch most of the bolts. This allowed a thorough visual inspection of the boiler to be completed. These initial set of photos were taken after the smoke box ends were removed. I plan to do a detailed ultrasonic thickness test this weekend and assess my options further, but based on the visual inspection, I may need to have a replacement boiler constructed. To that end I am currently in the process of making some inquires.

Smoke box removal

Removing the smoke box ends for inspection.

Boiler inspection

Visual inspection of the boiler after smoke box removal.

Boiler condition

Examining the condition of the boiler.

Boiler interior

View of the boiler interior.

Smoke box inspection

Inspecting the smoke box area.

Boiler components

Examining boiler components.

Boiler assessment

Further assessment of the boiler condition.

Boiler inspection

Detailed inspection of boiler components.

Boiler damage

Examining areas of concern in the boiler.

Boiler components

Inspecting additional boiler components.

Boiler inspection

Further inspection of the boiler.

Boiler condition

Assessing the overall condition of the boiler.

Boiler components

Final inspection of boiler components.

December 11, 2005

The goal today was to remove all the piping from the engine. I only had about three hours to work on the project. I first took pictures of how all the existing piping was plumbed so I can use it as a pattern when I get to the piping point later in the summer. I know it was not the original pipe, but from factory photos I was pretty confident it was plumbed the way it came from the factory.

Piping removal

Documenting the piping before removal.

Engine piping

Original piping configuration.

Piping configuration

Additional view of the piping configuration.

Engine components

Engine components and piping.

Piping details

Detailed view of the piping connections.

Engine piping

Additional piping details.

As I removed the pipe, I put all the fittings back together to use as a pattern when I installed the new pipe. I was a little surprised to find that a mouse had found his way to the cross head pump.

Mouse nest

Mouse nest discovered in the cross head pump.

Piping removal

Removing the piping from the engine.

A problem presented itself as I went to remove the bottom valve for the water column. To remove the valve I discovered I will first need to remove the gear guard. That project will need to be left for another day. My three hours was just about up. Other than that problem though, I did manage to remove all of the other piping. As you can see, it required a little heat to remove some of the fittings.

Heating fittings

Using heat to remove stubborn fittings.

Piping removal

Continuing the piping removal process.

Removed piping

Piping components after removal.

December 17 & 18, 2005

Brian Patterson decided to come over from Emmetsburg, IA to help out a little over the weekend. We continued with the dismantling. Got the rest of the rear smoke box off, removed the piston for inspection and removed the preheated ends for inspection. As you can see, we disturbed another cozy mouse home in the preheated. I was really surprised to see what good condition the cylinder, piston and rings were in. Front tank will need some help.

Dismantling

Continuing the dismantling process.

Piston inspection

Removing the piston for inspection.

Mouse nest

Another mouse nest discovered during disassembly.

Engine components

Engine components during disassembly.

Cylinder inspection

Inspecting the cylinder condition.

Disassembly progress

Progress of the disassembly work.

January 4, 2006

Over the Holidays, I made the decision to essentially have a new boiler constructed. Craig's Restoration Services from Durant, IA was given the contract to do the work. That decision being made, I will now need to remove the engine and traction components from the old boiler and deliver the old boiler to Craig so the boiler work can be started.

January 7, 2006

The goal today was to remove the engine. I wanted to remove the engine intact if possible. This would greatly simplify the reassemble project. Removing the engine would consist of removing 36, ½" cap screws that held the engine mounting castings to the boiler. I am sure they had not been removed since installation at the factory in 1893. Most of them were rusted in pretty good. We had to use some pretty heavy duty brut force to get them out. We broke only 4 of the cap screws. The rest of them came out but we ruined the threads in about 90% of them. I'll need to get all new ones mode. I had several friends stop by to help out. My thanks to Dave Hill, Chuck Holland, Wyndham Sellers, Bill Haun and Norman Taylor for their help. It took us right at 8 hours to get the engine off.

Engine removal

Beginning the engine removal process.

Removing cap screws

Removing the cap screws holding the engine to the boiler.

Engine disassembly

Continuing the engine disassembly.

Engine components

Engine components during removal.

Engine removal

Progress of the engine removal.

Engine disassembly

Further progress on engine disassembly.

Engine components

Engine components after removal.

Engine removal

Final stages of engine removal.

Removed engine

The engine after complete removal from the boiler.

January 14, 2006

The goal today was to remove the traction components and get the boiler removed and loaded on the trailer for transport to Durant, IA. Things went relatively straight forward. The cap screws still came out hard, but we had perfected our procedure for removing them. We had to remove the rear wheels to get access to the rear axle mounting brackets. Thanks to Eric Bremer, Brain Patterson, Wyndham Sellers and Chuck Holland we had all the cap screws out by noon and the boiler loaded on the trailed early in the afternoon. Turned out to be a short day.

Traction component removal

Removing the traction components.

Wheel removal

Removing the rear wheels for access to mounting brackets.

Component removal

Continuing the component removal process.

Boiler preparation

Preparing the boiler for transport.

Boiler loading

Loading the boiler onto the trailer.

Boiler loaded

The boiler loaded and ready for transport.

Boiler transport

Preparing for boiler transport to Durant, IA.

Boiler secured

The boiler secured for transport.

January 15, 2006

Today we delivered the boiler to Craig's Restoration in Durant, IA. Craig Dobbins and Gary Flack gave us a tour of their shop and some of the other work they have in progress. Sounded like my project would be started almost immediately. That sounded really good to me as my goal to have the engine up and running at Heritage Park's fall show seems closer and closer each day.

Here we are unloading the boiler at Craig's shop. That is Craig on the JD tractor.

Boiler delivery

Delivering the boiler to Craig's Restoration in Durant, IA.

Boiler unloading

Unloading the boiler at Craig's shop.

February 19, 2006

Brian and Eric were over this weekend to help out on the 15 Rumely restoration. We completed what we wanted to accomplish on that project on Saturday, so we decided to work some on 721. Didn't have a lot of time so we decided to polish some brass. Eric took on that project. As you can see he has most of the brass look'n good.

Brass polishing

Eric polishing the brass components.

Polished brass

The brass components after polishing.

May 10, 2007

The new boiler arrived. My IH 806 had a hard time lifting the boiler, but we managed to get it off loaded and safely on the ground. That's Craig Dobbins and yours truly breathing a sigh of relief.

New boiler arrival

The new boiler arriving at the site.

Boiler unloading

Unloading the new boiler.

New boiler

The new boiler after unloading.

November 23, 2008

After over of year of down time, my helpers and I started mounting the fixtures on the new boiler. The boiler is sitting upside down allowing easier mounting of the rear axle assembly and front pedestal. That's Brain Paterson helping out on this day.

Mounting fixtures

Beginning to mount fixtures on the new boiler.

Rear axle assembly

Working on the rear axle assembly.

Front pedestal

Mounting the front pedestal.

Collin Hall and Wyndham Sellers showed up to lend a hand as well. Collin is removing the masking tape from the intermediate gear fixture while Wyndham lends a hand to Brain installing the differential shaft.

Intermediate gear

Collin removing masking tape from the intermediate gear fixture.

Differential shaft

Wyndham and Brain installing the differential shaft.

Component installation

Installing additional components on the boiler.

With the axle assembly installed, it was time to up right the boiler. This process required numerous small turns with the crane until we had it right side up.

Uprighting boiler

Beginning the process of uprighting the boiler.

Boiler rotation

Rotating the boiler to upright position.

Boiler upright

The boiler in upright position.

Once upright we could install the differential gears and the hind wheels. At the end of the day we had the engine resting on its rear wheels again for the first time in 3 years. This was short of our 4 wheel goal, but Brian, Collin and I all felt good with what we had accomplished in a single day.

Differential gears

Installing the differential gears.

Rear wheels

Installing the rear wheels.

Engine on rear wheels

The engine resting on its rear wheels again.

December 7, 2008

Brian Patterson, Nick Feltus and Eric Bremer put in a day while I was on a business trip. They painter the top half of the boiler and installed the front wheel. Finally on all fours again.

Boiler painting

The top half of the boiler after painting.

Front wheel installation

The engine with front wheel installed, now on all fours.

December 14, 2008

Next we turned to cleaning and painting the smoke box and motor parts.

Smoke box cleaning

Cleaning the smoke box components.

Motor parts cleaning

Cleaning the motor parts.

Parts painting

Painting the cleaned components.

December 27, 2008

I was by myself today. I worked on cleaning and priming the motor and motor parts.

Motor cleaning

Cleaning the motor components.

Motor priming

Priming the motor parts.

Motor preparation

Preparing the motor for reassembly.

December 28, 2008

Motor primed and ready to mount on the boiler.

Primed motor

The motor primed and ready for mounting.

January 4, 2009

The crew today consisted of Brian Patterson, Eric Bremer and Collin Hall. We first properly positioned the motor and intermediate gear. Marked the holes with a transfer punch then removed everything to drill the holes with my magnetic drill.

Motor positioning

Positioning the motor and intermediate gear.

Marking holes

Marking holes with a transfer punch.

Drilling holes

Drilling holes with a magnetic drill.

The fixtures were then reposition and threads tapped with the fixtures in position to ensure each cap screw would thread properly into the boiler. At the end of the day we had the intermediate gear as well as the motor installed on the boiler.

Tapping threads

Tapping threads for the cap screws.

Intermediate gear installation

Installing the intermediate gear.

Motor installation

The motor installed on the boiler.

Progress to date.

Progress view 1

View of the restoration progress.

Progress view 2

Another view of the restoration progress.

January 11, 2009

To we worked on the front and rear smoke boxes. Nick Feltus and I worked on the front.

Front smoke box

Working on the front smoke box.

Smoke box installation

Installing the smoke box components.

Smoke box work

Continuing work on the smoke boxes.

Brian Patterson worked on the rear. By the end of the day we day both smoke boxes pretty much done.

Rear smoke box

Brian working on the rear smoke box.

Completed smoke boxes

Both smoke boxes completed.

January 17, 2009

Bill Haun and Lucas Munson putting the final touches on the front smoke box door heat shield.

Front heat shield

Working on the front smoke box door heat shield.

Bryce and Lucas Munson installing the front smoke box side heat shields

Side heat shields

Installing the front smoke box side heat shields.

Bryce Munson, Lucas Munson and Collin Hall at the end of the day. Front heat shields 90% installed.

Heat shields installed

Front heat shields 90% installed.

January 24, 2009

Nick Feltas finishing up the front heat shields

Finishing heat shields

Nick finishing up the front heat shields.

Jerred, Nick and Brian assess the fabrication needed to install the fire box door.

Fire box door assessment

Assessing the fabrication needed for the fire box door.

Brian drilling holes needed to install the fire box door.

Drilling for fire box door

Brian drilling holes for the fire box door installation.

January 25, 2009

Complete rear smoke box Sunday afternoon

Completed rear smoke box

The completed rear smoke box.

January 31, 2009

Weather turned warm for a day so we took advantage and painted a few parts.

Painting parts

Painting components during warm weather.

More painting

Additional painting work.

Painted components

Freshly painted components.

February 7, 2009

Decided to work on assembling parts of the engine today. Here the clutch and pinion gear were installed.

Clutch installation

Installing the clutch and pinion gear.

Next Bill Haun fit the shoes he had made several months earlier.

Fitting shoes

Bill fitting the shoes he had made earlier.

Brian and Collin working on installing the governor base.

Governor base installation

Installing the governor base.

February 8, 2009

Assembly continued today with the flywheel

Flywheel installation

Installing the flywheel.

Just about there.

Assembly progress

Assembly progress, getting close.

There, looking more like a steamer everyday.

Looking like a steamer

Looking more like a steamer everyday.

March 7, 2009

Lawrence Swanz and Oly Maas took on the job of piping the engine.

Piping the engine

Lawrence and Oly piping the engine.

There was no room for error in cutting and treading the pipes. Here they are making the final adjustments.

Pipe adjustments

Making final adjustments to the piping.

Brian and Eric worked on putting the front tank together in the meantime.

Front tank assembly

Brian and Eric assembling the front tank.

March 8, 2009

With the engine plumbed to the dry pipe, Nichols Swanz was able to assemble the stack casting.

Stack casting assembly

Nicholas assembling the stack casting.

Brian and Eric completed the front tank. It really came out nice.

Completed front tank

The completed front tank.

After a long day, Collin and Nichols found a comfortable spot to take a little rest.

Taking a rest

Collin and Nicholas taking a rest after a long day.

March 14, 2009

Bryce and Lucas Munson came out today to help install the front tank supports.

Front tank supports

Installing the front tank supports.

Collin got after doing some intricate painting.

Intricate painting

Collin doing intricate painting work.

Painting almost done on the motor.

Motor painting

Painting nearly complete on the motor.

March 21, 2009

Doug and Steven Langenbach from Fynnlanson, MN delivered the canopy today. All I could say was beautiful.

Canopy delivery

The beautiful canopy delivered by Doug and Steven Langenbach.

Brain and I worked on assembling the motor after we got done admiring Doug and Steven's workmanship. Here Brian is install the piston.

Piston installation

Brian installing the piston.

Next we work on installing the connecting rod.

Connecting rod installation

Installing the connecting rod.

March 22, 2009

Eccentric was next

Eccentric installation

Installing the eccentric.

Then on to timing the motor.

Motor timing

Timing the motor.

Setting the valve

Valve setting

Setting the valve.

Finally connected the pipes at the top of the dome to feed the motor.

Finally we were ready for a test run on air. We plugged all the boiler feed lines and pumped the boiler up to about 50 lbs of air.

Pipe connections

Connecting the pipes at the top of the dome.

The engine successfully ran on air during this test.

April 18/19, 2009

Time to put a little eye candy on the engine.

Whistle installation

Collin Hall installing the whistle.

Star painting

Bill Haun painting the star on the disc.

Cylinder lettering

Bill Haun adding lettering to the cylinder.

Final product

The beautifully restored engine.

Front tank painting

Nick Feltus applying the final coat of paint to the front tank.

Boiler piping

While the rest of us were putting final touches on the paint, Brian worked on the boiler piping.

May 10, 2009

First steam day

The day finally arrived for first steam.

Crew for first steam

The crew gathered for the first steam. From left to right: Monte Topp, Scot Evans, Nick Feltus, Eric Bremer, Eileen Ruble, Jim Evans, Lucas Munson, Brian Patterson, and Bryce Munson.

Waiting for steam

Waiting for the boiler to build steam.

May 17, 2009

How it looked at Heritage Park steam School. Needs a little more eye candy such as the tank striping and filly dilly. The engine performed beautifully for the students.

Engine at Steam School

The engine at Heritage Park Steam School.

The engine successfully moving under its own steam power.