Twin City Engine

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007001.jpg
one bit of really interesting news is that WMSTR has recently aquired the original engine that came off the trencher thanks to Mark Peterson it was built by Twin CityTractor Company so on the December 10 work weekend at Larson it was disassembled by a crew of faithful volunteers this shot shows Vern N. and Jim B. getting ready to lift off exhaust manifold

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007002.jpg
Jim B. Vern N. and Ryan U. dicuss removing the valve train from engine

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007003.jpg
Mark K. is diassembling the crowd engine for the Osgood steam shovel which might be coming to show at some time in the future
more to follow ran out of time tonite

[40avery]

Work weekends at Jim's are always fun and interesting. The Twin City motor is really going to add to the trencher as a display. I have always enjoyed the sound of the TC motors.

[M Kerkvliet]

I looked at that picture of me for aver a minute trying to figure out what I was reaching for! The "mouse catcher" did not show up well in the light I am in right now! Kelly, Gary and I really did work hard on that engine, but Louie snaps the picture when I am petting a cat!:biglaugh:

Oh well... Shows my softer side for the ladies...:D


Work weekends at Jim's are always fun and interesting.

Where were you????? I was looking forward to visiting with you!

[M Kerkvliet]

I thought I would throw this picture in, since Louie was so busy taking pictures he could not be in any of them! He did do a lot of work on the engine on Saturday too.

Here they are getting ready to lift off the last cylinder.

http://i155.photobucket.com/albums/s317/mbkerk/louieworkedtoo.jpg

Looks like Vern N, Louie L, Donald C (hiding), Ryan U, and Bob C.

Another picture just for fun...

In this picture Klinger is describing to Gary Muhl how a crowd engine works (in between bites of cold pizza) while Jim Stewart and Kelly Muhl listen on...:biglaugh:

http://i155.photobucket.com/albums/s317/mbkerk/klingerpizza.jpg

[40avery]

Where were you????? I was looking forward to visiting with you!

I did not know it was a work weekend up there or otherwise I probably would have been there!

[Lee]

Is the trencher drivetrain also Twin City? The engine looks the same as the 60-90.

[M Kerkvliet]

Is the trencher drivetrain also Twin City? The engine looks the same as the 60-90.

I don't know about the drive train, but I asked Mark Pedersen about the engine, and it is not quite the same as the 60-90. The 60-90 was a 7¼ X 9 and this one is a 7¾ X 9. To save you the math that is 2546 cubic inches displacement! 424.3 cubic inches per cylinder! Next time I see Mark, I'll ask him about the torque!

One cylinder of that engine = almost 7 of my Geo Metro engines! :eek: One cylinder would hold 1.8 gallons of water!

Correct me if I am wrong on the numbers Louie...

[Jerry Christiansen]

Hi Mark and all,

Your calculations look correct.

Now if we know the operating rpm, we can calculate the cubic feet of air needed each minute. Using the CFM of air and a reasonable fuel to air ratio, we can calculate the gallons per minute(or hour) of fuel the engine should use at full throtle.

Later,
Jerry Christiansen

[cjmlarson]

Hi Mark and all,

Your calculations look correct.

Now if we know the operating rpm, we can calculate the cubic feet of air needed each minute. Using the CFM of air and a reasonable fuel to air ratio, we can calculate the gallons per minute(or hour) of fuel the engine should use at full throtle.

Later,
Jerry Christiansen


I was told that it operates at 600rpm

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007007.jpg
this is what cylinder #3 looked like when we got the head off being that all the pistons were stuck in the cylinders after we got heads off we laid the engine on it's side pulled off the oil pan took off the rod caps to get cylinders off the block

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007008.jpg
here we have Kelly M. Vern N. and Ryan U. taking off rod caps

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007009.jpg
another shot of Vern N taking rod caps off they were a little frustating to get off because each cap had a cotter pin to lock the nut on

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007010.jpg
last jug out and on it's way over to the press to push the piston out of the cylinder

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007012.jpg
Jim B. running press Vern N. Gary M. getting ready to catch piston when it comes out Kelly M. waiting to take it away

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007014.jpg
piston assembly after being removed from cylinder

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007011.jpg
Wimpy A. has already started repirs on the engine he is preheating the exhaust manifold to weld cracks in it

[louie]

Is the trencher drivetrain also Twin City? The engine looks the same as the 60-90.
the drive train is manufactured by the buckeye trencher company I have found a web site that has some of the original sales brochures for several of the trenchers that the company manufactured will see if i can get it posted here at a later date

[CaseyD]

This is a super-neat engine. Thanks for the story, info, and updates!

[M Kerkvliet]

You small block Chevy guys are pretty proud of you're 4 bolt mains... This bad boy has 4 bolt rods!

http://i173.photobucket.com/albums/w54/louie14steam/saturday12-10-2007014.jpg

Great thread Louie! Thanks!

[CaseyD]

Now if we know the operating rpm, we can calculate the cubic feet of air needed each minute. Using the CFM of air and a reasonable fuel to air ratio, we can calculate the gallons per minute(or hour) of fuel the engine should use at full throttle.

I was told that it operates at 600rpm

Could you use that information to estimate the PTO HP?

[Tom Cwach]

These are from a MM power units brochure dated 1938.

[Jerry Christiansen]

Cody,

Yes, the horsepower of an internal combustion can be calculated by knowing engine specifications similarly to how the PLAN formula can calculate the horsepower of a steam engine. In both cases the calculated horsepower is the ideal or theoretical power. The useable or brake horsepower of the engine will always be less than the theoretical.

The rustyiron.com website has the formula below that will approximate the horsepower of a gasoline engine:

Hp = (volume of cylinder in cubic inches X rpm) / 13400

If the engine is a two cycle, 10000 is used in place of 13400.

The volume of a 7.75 X 9 cylinder is 424.6 cubic inches and the engine is rated at 650hp. Substituting those numbers into the formula gives us:

Hp = ( 424.5 X 650) / 13400

Hp = 20.6Hp

The formula predicts for one cylinder so the answer has to be multiplied by 6 resulting in about 124Hp. According to the table in an earlier post, with 62 octane gasoline the engine should produce 162Hp. In this case the formula has about 23% error! This engine must be more efficient than what the formula is expecting.

Now that the horsepower is known, fuel consumption can be estimated. One horsepower is equivalent to 42.4 BTU/min and one gallon of gasoline is equivalent to 129000BTU (depending on what grade of gasoline).

162hp X 42.4 BTU/min X . . . .1 gallon . . X 60 min =
. . . . . . . . . . 1 Hp . . . . . . . . 129000BTU . . . 1 hr . . . (the dots just make the fractions line up)

3.2 gallons/hr

The calculation above assumes that all the energy in the gasoline is changed into useable work. If the engine was 25% efficient it would burn 4 times the 3.2 gallons or 12.8 gallons/hr.


Later,
Jerry Christiansen

[M Kerkvliet]

These are from a MM power units brochure dated 1938.

Great scans Tom! Thank you very much for contributing...

Jerry... I am betting on the 12+ GPH number! I don't know how one would compute the efficiency of the engine, but I bet a lot of the fuel is given up for heat? In other words, there is a certain amount of those BTU's that are being burned up just to make the mechanical parts of the engine move (friction) and that equals heat.

Am I thinking correctly?

[Jerry Christiansen]

Hi Mark,

You are thinking correctly that friction takes a share of the energy in the fuel. A large amount goes right out the exhaust pipe with the hot air that is expelled.

Efficiency can be figured out by using a Prony Brake or other type of dynomometer. If the power coming out of the engine is known and the rate of fuel consumption is known, then efficiency can be calculated.

Later,
Jerry Christiansen

[GKarels]

I had an instructor in diesel school that discussed a one third split for heat generated.

1/3 of heat was expelled out the cooling system.
1/3 expelled out of the exhaust
1/3 was converted into usable power.

I do not remember if the topic at the time was gas or diesel engines, because we had classes for both. But I remember it bringing to light just how inefficient an internal combustion engine is.

[Eric M.]

Cody,

Yes, the horsepower of an internal combustion can be calculated by knowing engine specifications similarly to how the PLAN formula can calculate the horsepower of a steam engine. In both cases the calculated horsepower is the ideal or theoretical power. The useable or brake horsepower of the engine will always be less than the theoretical.

The rustyiron.com website has the formula below that will approximate the horsepower of a gasoline engine:

Hp = (volume of cylinder in cubic inches X rpm) / 13400

If the engine is a two cycle, 10000 is used in place of 13400.

The volume of a 7.75 X 9 cylinder is 424.6 cubic inches and the engine is rated at 650hp. Substituting those numbers into the formula gives us:

Hp = ( 424.5 X 650) / 13400

Hp = 20.6Hp

The formula predicts for one cylinder so the answer has to be multiplied by 6 resulting in about 124Hp. According to the table in an earlier post, with 62 octane gasoline the engine should produce 162Hp. In this case the formula has about 23% error! This engine must be more efficient than what the formula is expecting.

Now that the horsepower is known, fuel consumption can be estimated. One horsepower is equivalent to 42.4 BTU/min and one gallon of gasoline is equivalent to 129000BTU (depending on what grade of gasoline).

162hp X 42.4 BTU/min X . . . .1 gallon . . X 60 min =
. . . . . . . . . . 1 Hp . . . . . . . . 129000BTU . . . 1 hr . . . (the dots just make the fractions line up)

3.2 gallons/hr

The calculation above assumes that all the energy in the gasoline is changed into useable work. If the engine was 25% efficient it would burn 4 times the 3.2 gallons or 12.8 gallons/hr.


Later,
Jerry Christiansen


The formula is dead wrong; let me prove.

There is an 80 Horsepower Western engine at the Vista show. It definitely can produce its rated horsepower, because Western tested their engines at the factory before they shipped them.
Stats:
80 Horsepower
14 1/4" bore
24" stroke
200 RPM

Now for the numbers

Hp = (volume of cylinder in cubic inches X rpm) / 13400

Substitute the appropriate numbers

80=(3825.6975 x 200)/13400
80=(765139.5)/13400
80=57.1
No, wrong, do not pass go, do not collect 200 dollars. And this is the calculated power for a slow-speed, single cylinder engine from 1924? I think we have a problem here.

The 1/3 split is likely for a Diesel. Even modern automobile engines are only 25-30 percent.

[Jerry Christiansen]

Eric,

Thanks for the input about the formula. Some people are pretty generous with the word "approximate". Your numbers show about 29% error and my example had 23% error. I think we need to find a better formula!

As long as this got bumped up, any progress with the enigne?

Later,
Jerry Christiansen

[40avery]

Check this out for adding efficiency!

http://en.wikipedia.org/wiki/Crower_six_stroke

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/freedonuts12-13-08015.jpg
thought I would post the rest of the twin city engine pictures here to keep them together Tyson and Tim getting ready to bore one of the cylinders

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/freedonuts12-13-08012.jpg
Noran getting advise from Sanders on how to bore cylinder

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/freedonuts12-13-08011.jpg
Clayton removing studs from cylinders

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/freedonuts12-13-08020.jpg
Jeff Lee spent a good share of the sandblasting parts of the engine this shot shows one of the six cylinder heads he did.

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/freedonuts12-13-08021.jpg
I think that is Bob with his back to the camera not sure of the other two gents

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/freedonuts12-13-08019.jpg
Another shot of cylinder being bored Noran and Clayton watching

[M Kerkvliet]

Great pictures Louie!

Jim wants this engine running by the MSEA Steam UP event in April! If we keep getting crews like this, and work a few evenings in between, we just might make it!

[mrnewway]

This is a good thread and shows what goes into a project like this and also shows the people and thier expertise to bring this project to completion. Thanks to all that are working on this project :thumb:.
It is like the steam engine that Clayton did and the help he got to get it completed.
Thanks to all.

[cjmlarson]

Yesterday in at Jim's, there were a few workers doing some more repairs to the trencher engine.

http://i155.photobucket.com/albums/s319/cjmlarson/100_2254-2.jpg
I didn't ask him what it was he was repairing, but Wimpy was hard at braizing it together.

http://i155.photobucket.com/albums/s319/cjmlarson/100_2260-2.jpg
Here Louie is using the old-school method of removing rusted piston rings off of the pistons.

http://i155.photobucket.com/albums/s319/cjmlarson/100_2261-2.jpg
Bob C. disassembling the water pump.

http://i155.photobucket.com/albums/s319/cjmlarson/100_2262-2.jpg
No, this photo has not been altered...it truly is Klinger & Asher hard at work.

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/pistons001.jpg
after the piston rings were removed the ring lands and pistons were cleaned with a wire brush

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/pistons002.jpg
this is what the piston looks like after cleaning

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/pistons004.jpg
the pistons after cleaning

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009001.jpg
I had a couple days off of work last week and decided to put them to use so wimpy and I did some work on the Twin City engine, this shows the block after we built a stand and tipped it over and removed the oil pan and side covers the next step was a date with the pressure washer to clean the inside up a little

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009002.jpg
A top view showing covers that were removed, It took about about two hours with the pressure washer and a couple of treatments with a strong degreaseing soap but it really cleaned up nice

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009003.jpg
This shows Wimpy after he had the connecting rod cap removed wiping clean the bearing which was then lubricated and put in the engine

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009005.jpg
in this shot the piston assembly has been installed in the engine

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009006.jpg
Connecting rod bolts installed and shims for proper bearing clearance

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009008.jpg
Rod cap installed and I am tightening rod bolts

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009009.jpg
Wimpy is installing the new oil pan gasket, the round peice you see behind him is the oil pump suction screen this engine has a pressure lubricated cranshaft

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009010.jpg
Wimpy installed all the bolts in the oil panand tightened them here he is removing a broken pipe nipple from the oil pan drain I should have also mentioned that after the connecting rod bolts were all in and tightened safety wires were installed on all bolts

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009011.jpg
The oil pump and govener are driven off of a gear on the end of the camshaft if you look at the bottom of this picture between the flywheel and block you can see part of the oil pump, the govener mounts on top of this

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009013.jpg
This is a shot of the cam follower diassembled most of these were stuck and had to be taken apart to get cleaned up an working freely again

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009014.jpg
assembled unit rady to go back into block

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009015.jpg
Wimpy is shown here taking the exhaust and intake manifold apart, the upper and lower parts are held together by the studs you can see in the center of the manifold It took almost all day of heating and cooling and careful use of a air hammer to get this done there are a few cracks that need to be repaired that could not be done with the manifold together

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009016.jpg
The manifold in peices ready for the next step

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityengine03-02-2009018.jpg
In this shot you can see the govenor is mounted cam followers are all installed and side cover is back on

[M Kerkvliet]

You guys have been busy Louie! If we ever get this Case done I will be right back down there!

Interesting that the pistons are installed on the crank before the cylinders are back on. The ring compressor must open up completely to get it off the piston as it is installed from underneath the cylinder?

Have the liners been pressed in yet? :picture:

[louie]

Mark
sorry I took so long to answer your question. I did not get any pictures of the liners being installed but I was there, the liners were set outside to cool off the cylinders were then heated up and the liners dropped in as they cooled a tight fit was acheived They were then taken back to the lathe cut close to the right diameter and a chamfer at the bottom of the cylinder was also cut in it As you will see from the following pictures we just used the overhead crane to support the cylinder carefully lower it on to the piston start the rings in the cylinder and lower it down

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityjugs001.jpg
Jim doing the final honing on cylinder

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityjugs006.jpg
A shot of me fitting piston rings to get the right end gap

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityjugs003.jpg
this sows the ring in the cylinder after the ends had been filed to get the gap

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityjugs010.jpg
This shows the cylinder being lowered on to the piston

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityjugs008.jpg
Jerry and Klinger setting cylinder down and installing bolts, Jerry seems to work well when he has something in his mouth on the work week ends he usually makes quite a few trips to the donut box So on these off weekend like this one I had some chocolate chip cookies to keep him happy:rof::rof::rof:

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityjugs009.jpg
Wimpy getting ready to weld cracks in exhaust manifold

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/twincityjugs011.jpg
Roger Meyer Brought the water pump back for the engine after doing some extensive repairs to it Many thanks for that:thumb:

[40avery]

Great posts Louie! It is really going to look neat to have that big beast mounted up on the trencher again.

[M Kerkvliet]

If you guys aren't careful, you might end up with a working display for the MSEA Spring Steam Up!

Thanks for the update Louie!

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/donuttasting3-14001.jpg
Mark is shown here cleaning out the threads for the headbolts

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/donuttasting3-14002.jpg
Vern cleaning threads on exhaust manifold so it can be assembled to the intake Jim, Clayton and Mike Making sure he does it properly:)

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/donuttasting3-14003.jpg
Mark P had a magneto that will work on this engine Pete is shown here giving it a a good cleaning

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/donuttasting3-14013.jpg
Tom S finishing mounting the water pump Mark is cleaning the side cover off for the blockRyan wiil help him hold it in place when they are ready to put it back on again

[louie]

http://i173.photobucket.com/albums/w54/louie14steam/donuttasting3-14016.jpg
The finished product or almost all that is left is the magneto, carbuerator, run the spark plug wires, Hopefully the next pictures will be a video of this engine being started and running

[louie]

:congrats:http://i173.photobucket.com/albums/w54/louie14steam/donuttasting3-14017.jpg
a view of the other side I forgot to mention that after it has been run so we can can check for leaks it will have a fresh coat of paint.
I would like to Thank everyone who donated funding and time to this to this project and to Jim and Lynette for the use of their shop and equipment with out which none of this would have been possible

[mrnewway]

Louie:
Thanks go out to you for all the photo's and keeping this thread going:thumb:
Also thanks to all that helped out on this project.
I would like to be back to see the first start up but will have to wait till June.
The TWIN CITY should make the trencher throw some serious dirt.
And I can not forget Jim and Lynette, they made it happen:thumb:.

[Jerry Christiansen]

Louie,

Are you going to have a flat belt pulley on the engine so we can belt it to a Prony Brake? Depending on the engine speed, maybe a 540PTO shaft could work.

Later,
Jerry Christiansen

[louie]

Jerry
That would be interesting to say the least

[Pete Mandt]

I finished the magneto this morning. I had to get a new coil for it. This required a complete disassembly of the magneto. Since it was apart it got completely cleaned, polished and painted. I was told by Jim and Mark that it has to be capable of "lighting a prairie fire on a damp morning". I felt safe testing it this morning since Wahpeton is in flood mode today. It works real well.

[Pete Mandt]

Thought I would post some pictures of the magneto repair.

http://i633.photobucket.com/albums/uu60/pmandt/100_2018.jpg


Picture of some of the cleaned up parts


http://i633.photobucket.com/albums/uu60/pmandt/100_2021.jpg

The coil was bad in this magneto. This picture shows the old coil and how the armature goes through the coil. The new coil is shown at right.

http://i633.photobucket.com/albums/uu60/pmandt/100_2023.jpg

This picture shows the armature with one of the rotors removed so the coil can be replaced. The rotors are held on with taper pins. I was given some advice by Lightning Magneto, I was told that when removing the taper pins I was to use nothing less than a 3lb hammer, hit it like I mean it and they will come right out which they did.

http://i633.photobucket.com/albums/uu60/pmandt/100_2024.jpg

This is a poor picture but you can see the missing leads on the coil on the left and the good leads on the replacement coil

[Pete Mandt]

More magneto pictures.

http://i633.photobucket.com/albums/uu60/pmandt/100_2029.jpg

Reassembled armature and coil ready to be installed in the base of the mag.

http://i633.photobucket.com/albums/uu60/pmandt/100_2030.jpg

Armature and coil installed in the base.

http://i633.photobucket.com/albums/uu60/pmandt/100_2036.jpg

Magneto base with both end housings installed. The black metal piece on top is where the magnets sit.

http://i633.photobucket.com/albums/uu60/pmandt/100_2041.jpg

Distributor block installed and coil primary and secondary connections made on the top.

http://i633.photobucket.com/albums/uu60/pmandt/100_2045.jpg

All connections made, just needs magnets installed and then see if it works.

http://i633.photobucket.com/albums/uu60/pmandt/100_2046.jpg

Recharged magnets installed and ready for testing. It works real well. Just need to install the impulse assembly and it is ready to go.

[M Kerkvliet]

"You Da Man" Pete!!! :not_worthy:

Looks outstanding! I can't wait to see it all together and running!

Hey... you got the carburetor done yet?

[40avery]

You really have the posting thing down Pete. Great job.:thumb:

I hope all is going OK with your flood fight. Our threat level is dropping daily here.

Rick

[louie]

http://s173.photobucket.com/albums/w54/louie14steam/?action=view&current=TwinCityEngine.flv

[M Kerkvliet]

Wow!!!

Congratulations to all who helped on on bringing this engine back to life!

Outstanding video Louie! Thanks!!

[louie]

I would also like to express my gratitude to all those who helped with donations for parts and donated time to bring this engine back to life again This video was taken a week ago on saturday The engine was probably ran about three and one half hours that day and it gobbled up 12 gallons of gas

[Olde Waterboy Ted]

And more familiar faces working on a major project! I,m really now more excited about the next June Work weekend at Rollag. This engine should be there -- right?? And Louie, thanks for all those good pics. That last one in motion w/ Pete & father Jerry was especially enjoyable. To hear that engine crank up! And Klinger sitting just sitting there like he knew it would happen -- very calm -- me 2000 miles away very excited. By the way using my Norwegian Two-handed Tachometer (NTT) estimated that engine was idling at 240 RPM between the bursts Pete gave it on the gov. Am I far off? I tho't it would run more in 350-425 range but ??
I can explain my NTT method here if you care but can wait & be patient until this June in Rollag.
Ted Johnson

[Jerry Christiansen]

Hi All,

I talked with Jim B. yesterday. A plate with a 540 PTO shaft has been made for the Twin City engine. We are going to hook the enigne up to a Prony Brake Saturday, June 20 at 11:00am.

We will run the engine for quite a while to give it some break-in time and see what it can do. Bring your camera.

Later,
Jerry Christiansen

[Mike Bennett]

Sounds like fun. Hope to make it up there.

[cjmlarson]

Sorry for having to do 2 short clips, but our internet connection forces us to keep things short. Here are a couple clips of Jerry (used to run the trencher for Haggert), giving us the history of the engine.

http://s155.photobucket.com/albums/s319/cjmlarson/?action=view&current=TCHistory.flv

[cjmlarson]

http://s155.photobucket.com/albums/s319/cjmlarson/?action=view&current=TCHistory2.flv


We also have video of the engine running on the prony brake and will post that tomorrow.

[cjmlarson]

We will be posting some of the run time on the brake tonight,It just got to late to finish the up load last evening

[cjmlarson]

Here's a couple clips of Pete showing us his expertise on priming and starting the Twin City while hooked up to the prony brake.

http://s155.photobucket.com/albums/s319/cjmlarson/?action=view&current=TCRunning.flv

[cjmlarson]

Under the watchful eyes of Wimpy & Jerry...

http://s155.photobucket.com/albums/s319/cjmlarson/?action=view&current=TCRunning2.flv