Author Topic: Project Roid  (Read 305 times)

2Ton46

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Project Roid
« on: December 05, 2017, 03:20:36 AM »
Hello everyone.  I am a new member, and must have been suffering from iron deficiency, as I ended up with a twin.  I'll be sharing some of my work here, I'm setting up the twin on a small cart to provide a mobile stationary power source for the farm.  Mainly because it seems like a fun way to spend some free time and maybe learn something along the way. This forum has been a valuable resource, and thanks to everyone for their contributions.

« Last Edit: December 05, 2017, 03:34:33 AM by 2Ton46 »

38ac

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Re: Project Roid
« Reply #1 on: December 05, 2017, 12:57:47 PM »
Welcome!
Looks like you have a PTO set up on there?  How does it behave on the cart? I had a 25-2 and at an RPM over real slow it shook the cart pretty bad.
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dieselgman

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Re: Project Roid
« Reply #2 on: December 05, 2017, 02:48:31 PM »
Welcome 2Ton! Glad to see that 12/2 Century up and running so fast! You are the first to post up a finished (or nearly finished) project with one of these from our Kansas warehouse. Your PTO drive is creative and fascinating for me. Please show us the fans and various drive-shafts you have devised.

dieselgman
Ford Powerstroke, Caterpillar 3304, Cummins M11, Too many Listers to count...

2Ton46

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Re: Project Roid
« Reply #3 on: December 06, 2017, 02:33:14 AM »
It was certainly a kit.  It had or has many of the issues commonly described, like sand/slag/iron in the case, and in my instance a big chunk of that stuff that was partially blocking the sump. Looked like a paper wasp nest but was mostly iron and sand. I ended up melting most of it out with a torch as it was not responsive to pounding or prying. Most of the bearings looked pretty good, I did pull a shim from a rod big end.  I'm not certain that all of the alignment is absolutely correct as far as the main and cam bearings, but everything feels good by my poking. I've felt far worse in running equipment. I didn't strip it and hot tank it, rather spent a day poking, brushing, washing along with some disassembly of the already assembled base. I probably missed something someplace but I feel that I got most of it. It's on its 3rd oil change with less than 3 hours of run time as well...Had a few minor bent or missing parts with the kit, one of the water manifolds had a hole drilled out of alignment, I simply enlarged the hole and it fit. Dieselgman was super helpful in hunting down a missing 9" stud from the kit and mailing it down. Also had a bottom oil ring and spring that was just loose in the cylinder instead of on the pistons like all the other rings, it probably was popped off when they packed it.  I used it, it didn't quite sit flat on the table the whole ring was a slight spiral, but looked ok otherwise and when put into the ring groove it looked ok, so we took a chance on it. On the bright side the cylinders both had a nice cross hatch and felt consistent when pulling the pistons through by hand so that part at least looked fairly well done. The idler gears felt pretty good by my hand as well, time will tell if they settle in properly or start to self destruct.

The cart is built purposely over heavy and wide to help with stability. Probably 500lbs of steel in it. Running it on the cart is ok after almost 3 lbs of lead weights. without them it was a jumper and a wiggler.  Interestingly, most of the hopping seemed to be on only one side. with the weights the cart remains in place with out any movement of the wheels on concrete. This is at rated engine speed, as well as most speeds down to off. I would not call it vibration free, but at least I can read the thermometer now lol.

The PTO shaft was designed to match up with some equipment we have as well as a couple of fans that we use around the shop or in the case of the larger one, the yard.  It also makes a convenient way to power the radiator fan. I also will have a 12" flat belt pulley on the crankshaft as well for power take off. PTO runs at 325 rpm.

The shop fan is a 60" propeller fan that has been adapted to accept either electric power or shaft drive power. Here it is on shaft drive:


The yard fan is an airfoil blower that has been mounted to a cart and accepts power via flat belt drive or shaft drive from either end. this also can function as a pass through, as seen above. This fan also has oscillating louvres I fabricated to sweep the airflow. This allows the fan to cover a much larger area. With the fan running by PTO it delivers enough wind to cover several thousand square feet of yard on a calm day, sweeping cycle is three times per minute.  Uses about 4hp at that speed, and isn't noisy. The fan is well under rated speed at this figure and if turned at rated speed (3625 rpm) it would sap nearly 70 BHP not counting driveline loss.  I think at that speed it would thrust itself halfway to the moon if all it was tied to was the little cart.

We use it while working on something out in the open or have set it up on one end of the yard for an event and cooled 100 people. (don't worry it gets fenced to help keep 'em out of the works)

glort

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Re: Project Roid
« Reply #4 on: December 06, 2017, 02:54:43 AM »

That's a new one!
I have seen and read of listers driving a lot of different things but never a big fan and with a drive shaft.

Nice engine and great setup.

38ac

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Re: Project Roid
« Reply #5 on: December 06, 2017, 12:30:11 PM »
Now that is interesting,  thanks for the update.  Funny you would mention that glob of slag and cold metal in the crankcase. My 12/2 of same nameplate  has yet to be uncrated so I dont know what awaits me there but an unfinished 16/2 kit engine that I have had in my procession for several years has that same glob right above the oil intake screen.  I would guess from the same run of castings?? I now know how to get rid of it if it resists my normal methods.

The twins are really hard to get settled down on a cart due to the balancing weights being on opposite sides of the crankshaft axis and a long ways apart. The engine wants to pivot around the center of mass (middle main bearing) in every possible direction. You have done well to get it settled down on a cart!

 The best twin I have in that respect is a TL which is (basically) the same bottom end as a CS twin only gasoline fueled and spark ignition. The TL has no balance weight in the flywheels at all. It is much better behaved on a cart when running at an  RPM it likes,,, but much worse at the RPMs its doesnt like, LOL.  It is strictly a show engine so we just run it at speeds where it will sit decently still.
Here is the TL at an RPM it likes
https://youtu.be/BEHiPaIBLig
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Willw

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Re: Project Roid
« Reply #6 on: December 09, 2017, 03:29:22 PM »
Welcome aboard 2Ton!
That's a really interesting project you have there ;D

BruceM

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Re: Project Roid
« Reply #7 on: December 09, 2017, 06:02:20 PM »
My friend Mark found that his biggest conical with round end carbide burr (about 2" diameter at base) in a die grinder worked very well in smoothing and shaping the openings and casting flash fins and such in my neighbors new Rajkot CS crankcase casting.  I gave it try and also found it worked a treat- controlled smooth cutting and shaping instead of the painfully slow grinding with stones.  I was going to buy one for myself until I found out it was about $160. 

Love your new portable twin CS PTO emulator setup, 2Ton.  Your portable monster fan is most impressive, too! 






gusbratz

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Re: Project Roid
« Reply #8 on: December 09, 2017, 11:29:19 PM »
I really liked my harbor freight needle scaler for needle gunning out the inside of my engine. I also liked how once it chipped out the slag it seemed to peen the surface and tighten it all up.

vdubnut62

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Re: Project Roid
« Reply #9 on: December 10, 2017, 03:34:54 PM »
Now that is the coolest setup I have seen in a long time! The only thing that would be cooler would be a maze of flat belts, but that would be liable to "eat" bystander that got a little too curious. Welcome and keep it up.
Ron
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glort

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Re: Project Roid
« Reply #10 on: December 11, 2017, 01:15:13 AM »
The only thing that would be cooler would be a maze of flat belts, but that would be liable to "eat" bystander that got a little too curious.

You seem to say this like it would be some sort of a problem?   ;D