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Messages - unimogr

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Other Slow Speed Diesels / Hopper cooled diesels made in Germany
« on: July 02, 2009, 04:43:59 PM »
I took the family to Germany to visit some relatives and while there we stayed at a farm and the owner there had a couple interesting tractors in his collection of junk.  One of them was a Kramer with a hopper cooled single cylinder horizontal diesel that looks remarkably similar to the engines from China.

Pictures of the tractors can be seen here:

For those of you on dialup you'll have to wait a long time for everything to download, I didn't thumbnail the images so they are pretty big.  If anyone would like a high res copy of any pictures send me an e-mail with the filename and I'll send them over.

There is a Youtube video of a similar Kramer running here:


Everything else / Re: Firewood Splitters
« on: December 29, 2008, 02:59:47 AM »

I read about a guy who built his own splitter or as he called it, a wood extruder and he says it takes three people to keep it running at full speed.  He included a couple pictures, I think the table on top idea is pretty smart.  It's the last posting on this page:


Changfa Engines / Re: Changfa-style clones?
« on: December 05, 2008, 01:18:31 AM »

His website is still active:


Other Slow Speed Diesels / Re: Detroit diesel gen set
« on: October 02, 2008, 09:15:18 PM »
There was a guy on eBay selling the 12.5 and 20KW units, I recall they were selling for less then $2000.  I just checked and he doesn't have any listed right now, but if you really want one of these screamers then I'd keep my eyes open over there.  You could also sign up to the DD list at Yahoo Groups ( ), some of the guys there have these gensets and they might know of places where you can still source them.



Likely came from these guys:

The mills are made in China, I was able to track down a supplier but I've since lost track of it.

I did the math and with the PP660 mill I think it would be possible to make a years worth of pellets in 48 hours or so, the biggest thing would be the feed stock.  Lots of grain farming in my area and usually the farmer just leave the straw on the field so if I had my own bailer I could likely have the straw for free, the biggest factor in all of this is the time needed to collect the straw.  From what I've been able to gather, straw will have less BTUs but if the stuff is free except for fuel and labour I could live with the loss.

One thing to keep in mind is that these mills need material that is 1/4" or less, saw dust would be ok, but wood chips would need to be run through a hammer mill to bring them down to size.  Looked into that problem and found that mix mills / feed grinders have hammer mills and can be bought fairly cheap:

I know these machine can grind up a square bale but they may not be build heavy enough for wood.  Having a built in hopper is a definite bonus too.

I'm thinking about buying a pellet boiler this year after spending over $5000 on heating oil and probably another $1500-$2000 on electricity to keep the house heated last winter.  Based on the calculators I've seen on some websites the boiler should pay for itself in 2-3 years provided pellet prices don't go through the roof, and even if they do a pellet mill would be my plan 'B'.


General Discussion / They don't build them like this anymore
« on: February 29, 2008, 09:09:27 PM »

An old water pumping station in England.  According to the article I read about this station it ran for 100 years non-stop basically before they shut it down.  They fire it up a couple times a year so that people can see it in motion.

If you click on the image galley link at the bottom of the page you can see some pictures of the internals.

One thing I do find interesting is the picture label Pivot.  You can see the massive brass/bronze bushing that holds the shaft, is that a gap or a shadow at the top of the shaft?     If that's 100 years with of wear that's pretty good I think.


General Discussion / Re: Semi-diesel
« on: September 06, 2007, 06:42:14 PM »

I was aware of the explosive cartridge but I could of swore they also made a hotbulb engine too at one time.  A quick check of Google didn't turn up anything interesting so I guess you're right.


Field Marshall wasn't a hot bulb diesel.  Started from cold with a modified shotgun cartridge or hand cranked

General Discussion / Re: Semi-diesel
« on: September 06, 2007, 02:13:06 PM »

Search for Lanz and you'll find a fair amount of stuff, most of it is in German but it's still interesting to watch.  Lanz (German), Urusus (Polish) and Field Marshall (UK) were some big names in the hotbulb tractor business.

I know of 1 Lanz over by Goderich and another over by Ottawa, keep meaning to go out and see them but never have time.


I recall seeing some farm tractors on You tube that were hot bulb as well.

General Discussion / Re: Semi-diesel
« on: September 05, 2007, 01:00:02 PM »
Semi-diesels are interesting engine that can run on a wide range of fuels. I've read that Lanz hotbulb tractors are able to run on anything between crude oil to butter milk.

The biggest problem with these engines is that they don't respond well to changes in load making them a poor choice for electricity generation. Hotbulbs also require load to keep them hot inside other the engine will stall or you have to run the external blow torch.


Other Slow Speed Diesels / Re: Princess Auto finally has Chinese diesels
« on: August 23, 2007, 03:13:17 PM »

I have two engines in my collection, a 10hp unit connected to a 5KW head, the unit is built by Launtop, and the other is a 4hp that I bought as a stand alone engine for next to nothing.

Neither engine have any markings as to who actually built them, but I will tell you that the 10hp engine is a FAR better engine.  The 4hp doesn't seem to run all that smooth, smokes a bit and can be a pig to start.  Both engines have a decompressor but the machining on the 4hp decompressor isn't perfect so it doesn't really work.  Another thing I noticed when I changed the oil in both of them is the screen in the serviceable oil filter was very poorly assembled in the 4hp engine but not the 10hp.  Clearly there are various levels of quality when it comes to these engines (like that's a surprise).

I think part of the issue with why the 10hp starts and runs better is because it's a lot heavier and had a lot more momentum when you pull it over.  I've pull started the 10hp with 1 pull at -10C but the 4hp likely won't fire at all at 10C, I'm sure I could get the 10hp engine running at -30C if I used the electric start.

If I had to by another engine I certainly wouldn't buy a 4hp engine unless it was dirt cheap like my engine was ( I think I paid $150 and it included shipping from BC to Ontario), I might consider a 6hp after careful inspection but I would buy another 10hp unit if it appeared to have the same quality as mine.

Rob, if you're passing by my place and would like to look at my engines just let me know.



Stopped by the show on Saturday, this was the third year I attended.  It's never a big show but one thing I do like about it is that's very relaxed, kids running around everywhere on modified lawn tractors, people touring around on their tractors and no one seems to be hurt, killed or even concerned.

Did you check inside the big white tent?  Off to one side was Ed Irwin, he's a model engine builder and his models are something else to behold.  He buys the basic castings as a kit but everything else he builds himself right down the to the spark plugs and magnetos.  He had a steam engine mounted on a rail car that I didn't see last year but didn't get a chance to talk to him and find out if it was a new addition or not.

My daughter wanted to look at the animals and while she was looking at them I was looking at the big steam engine that's sitting on the side of the main road in.  An old guy came up to me and started telling my about the 1/8th model he's building of this tractor in his basement.  You sure do meet some interesting people at these kind of fairs.



Did some digging on their website and the online price is $899, I think Pat at Altopro has some in the $600 range on eBay not too long ago so I think PA is gouging just a little bit.  These guys also have them for the same price and they are a lot closer to us:

I looked at the twins Mohamed was selling, my biggest concern is that this design is a home brewed Chinese idea and not a Yanmar clone like the 10HP engine is (to the best of my knowledge I could be wrong).  Some company in China just stuck two 10HP engines together and called it a 20HP.  I would be concerned about the amount of engineering and testing that went into this engine, sure would suck to sink $2000 into this engine and only find out after 500 hours the crank broke because they messed up the cylinder angle or something.  I seem to recall Cat made a V8 truck engine back in the '70s and the V was too tight and the engine ended up breaking cranks.

The price was $999.00 IIRC, Can dollars obviously plus taxes.  I have a Case 444 garden tractor with a ~16 HP cast iron single Kohler engine that just won`t quit.  When it eventually does I was thinking of one of the 20 HP, V-twin diesels that are the same ilk as the Lanmar clone at princess.  I first saw this twin diesel at Mohammed`s ebay site (motorsgeneratorsandstuff).


What was the price on the engine?  It's been a while since I've visited the Man Store, but I did see a growing number of knock-off gas engines and generators and I wondered how long it would be before the diesels would appear.

I have a 10HP on a generator and a 4HP on a pressure washer, they are no the most refined engines out there but the are ok engines, sure beat messing around with carbs.  I have a 19HP Briggs in a Sears lawnmower that I want to torch right about now but I can't afford to replace it, so I wait.

The 10HP is a better engine, a lot smoother running then the 4HP but they are both noisy.


Engines / Re: what is number 4 diesel
« on: June 05, 2007, 10:10:32 PM »

Sulfur is bad for diesels and bad for people too.  Back when they first dropped the sulfur limit (0.05% I think) the process the refiners used to strip out the sulfur also stripped out key lubricants from the fuel oil.  After injection pumps started to fail they realized their mistake and modified the process so that the lubricant was replaced.

All of my diesels were built between 1957 and 1980 and they all run fine on the low sulfur diesel, but I haven't run any ultra low sulfur diesel yet so I'll withhold judgement on that stuff.


Yes D4 is high in sulfur but isn't that good for lubrication in diesel engines??

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