This topic started as a post in the Components, Parts, Items of interest section. I thought it would be good to move it here.
Henry
http://cgi.ebay.com/Generator-End-Marathon-Pancake-/280653158195?pt=LH_DefaultDomain_0&hash=item41583b5733
Thanks for the tip. One less for sale now ;D
Hi gregger2k,
I got mine Monday. Wait until you open it up and see it. They are very nice units. They are primed so you can paint it to with what ever color you want. These are great deals for $400.00. I could not believe it when someone told me about it over a month ago. Another once in a lifetime deal? I would say it probably is.
Henry
Well they are all sold. Did any other members buy one?
Henry
Picture #1 The exciter rotor
Picture #2 SAE-5 Housing with SAE-6.5 Flywheel Flexplate. It also has a nice heavy aluminum fan that should push a good amount of air.
Picture #3 Top View. There will be a electrical box mounted on top with a 30 amp double pole breaker.
Pictuer #4 Back view with cover on.
Picture #5 Top and side view.
When I was checking it out I noticed the stator is pitched. I cant wait to see what it does.
This generator end will be mounted to the Kubota D1005 engine that I picked up a couple months ago.
Henry
Rating Tag Picture and two pictures of the AVR.
Cool, Thanks for the pictures and tip Henry. I can hardly wait for mine.
I will be putting it on my Kubota D905. It had a capacitor regulated 6KW pancake on it when I got it (old light plant) that i removed to lovejoy a ST10 to.
It is working good with a Stamford SX460 clone AVR But this deal was just to good to pass up!
Thanks Greg
Quote from: hwew on April 06, 2011, 02:38:32 PM
Well they are all sold. Did any other members buy one?
Henry
Henry, I ended up picking one up as well. I'll couple it to my D905 as we talked about awhile ago.
Wondering why this generator isn't listed on the Marathon site. Did you decide the unit was too good a deal to pass up for your engine? Initially you where thinking it might be a little undersized for your engine.
Although I did find this unit.
http://www.hardydiesel.com/kubota-generators/kubota-7-kw.html
Now they claim a d1005 is used, however it's a 3cyl engine my D905 is 3 cyl but I thought the D1005 was a 4 cyl engine.
Typo?
-RJ
Hi RJ,
The Kubota D1005 is a 5 series three cylinder engine.
The bore is 4mm larger than the D905. The stroke is the same. Pretty much everything is the same as the D905.
The D1005 engine has an aprox net cont. Hp of 11.7 at 1800 rpm with aprox 34 ft-lbs of torque.
The D1005 engine has an aprox gross int. Hp of 13.1 at 1800 rpm with aprox 43 ft-lbs of torque.
It should be a pretty good match for the 7.8Kw genhead.
The D905 engine is rated only 2 or 2.5 Hp less with aprox 4 ft-lbs less torque. Not much of a differance. I feel it will also be a good match for the 7.8Kw genhead.
Henry
Very bummed that I missed these!
Don't know when the thread got moved, but if it moved while they were still available, that is a problem imho.
Often, I skim the parts of interest thread very quickly and move on because I don't have time to read the whole forum.
HUGE bummer as I would have snagged a couple of them for my baby cat diesels.
Steve
Quote from: Apogee on April 10, 2011, 11:10:15 AM
Very bummed that I missed these!
Don't know when the thread got moved, but if it moved while they were still available, that is a problem imho.
Often, I skim the parts of interest thread very quickly and move on because I don't have time to read the whole forum.
HUGE bummer as I would have snagged a couple of them for my baby cat diesels.
Steve
Steve, I'm sorry you missed them. I mentioned them to Henry in a PM over a month ago when I noticed them first pop up on e-bay. We both have similar engines so I thought it might be a good match for his setup as well. I actually just saw this thread yesterday for the first time so I really don't have any idea when, or if it was moved. I wanted to get a few of them a well, but could only swing one at the moment.
Hi Steve,
I moved and modified the topic aprox. three hours after they were sold out.
I believe there were 11 available when I first looked at the link that RJ sent to me over a month ago.
I forgot all about them until stumbling upon them on March 31st because I had another genhead in mind.
There were 8 available on april 3rd and I had no idea they would sell all in a short time.
My fault. ::) I should of posted them when I stumbled upon them again on March 31st.
My apolagies,
I just stumbled upon something.
I will PM you about the find.
Henry
Quote from: hwew on April 10, 2011, 08:48:32 AM
Hi RJ,
The Kubota D1005 is a 5 series three cylinder engine.
The bore is 4mm larges than the D905. The stroke is the same. Pretty much everything is the same as the D905.
The D1005 engine has an aprox net cont. Hp of 11.7 at 1800 rpm with aprox 34 ft-lbs of torque.
The D1005 engine has an aprox gross int. Hp of 13.1 at 1800 rpm with aprox 43 ft-lbs of torque.
It should be a pretty good match for the 7.8Kw genhead.
The D905 engine is rated only 2 or 2.5 Hp less with aprox 4 ft-lbs less torque. Not much of a differance. I feel it will also be a good match for the 7.8Kw genhead.
Henry
Henry I think you hit it on the nail, I stumbled on this publication from Kubota and it should give us a good idea for these engines. This states the D905 is good for 8.9 KW Standby and about 8kw con't duty. It states the D1005 is rated for 9.8kw standby and about 9kw con't.
Hi RJ,
Thanks for posting the link.
Yes there is about a 1Kw differance in producing electrical power on the D905 and D1005 engines.
About Kubota's numbers, I feel they are high.
Most generator manufactures that use Kubota D905 and D1005 engines have more conservative numbers like:
D905: 7Kw continuous
D1005: 8Kw continuous
I feel the conservative numbers most manufactures use are still a bit high.
I would rate them:
D905: 6Kw continuous
D1005: 7Kw continuous
I feel it would be better to take the more conservative approach.
At least we know what these engines are capable of producing for standby power.
A word of caution!!! I spoke to an application engineer from Kubota about a month ago and he said he seen these engines on 1800 rpm generators have over 40,000 hours on them. :o
Back to the Marathon Genhead. I will start assembling it soon. I hope to have it ready to test run some time next month. I am looking forward loading it up and see how it does. I don't know what numbers we will be looking at but I think they will be pretty good.
Henry
I just talked to Marathon tech support and gave them the model and serial number of the generator head I have and I just found out the Starting Current Surge on these Generator heads are 75 amps @ 240 volts :o. That works out to be 18,000 watts surge.
Henry
I was given a Performance Data Sheet for this Generator head. The only differance is the head model number is for an OEM Genset manufacture. And the generator head is conservatively rated. So this Performance Data Sheet shows what this generator head is capable of producing.
Henry