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Author Topic: Kubota d905 17-20 ish hp diesel  (Read 557 times)

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Offline Linemanacdc

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Kubota d905 17-20 ish hp diesel
« on: March 10, 2020, 02:31:02 PM »
Hello all,

New to the forum here but think I found the right place to search some wisdom. My brother in law gave me a little 3 cylinder diesel d905 motor that his work was going to throw away. I understand itís somewhere around 17-20 hp. It runs and it has a generator bolted up to it but I donít have a use for that. I found out I could purchase a Norwood lm29 mill without a power plant(only company and model that I could get to be open to the idea). Anyone have any suggestions for me? Would it be a wise decision to try and go for it or do you think it would end up being a huge pain in the rear?

Thanks and good day!

Offline Southside

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Re: Kubota d905 17-20 ish hp diesel
« Reply #1 on: March 10, 2020, 02:40:16 PM »
Welcome to the Forum.  You would want to check the engine weight and the capacity of the mill and if those two line up and the engine is good you would have a very good power plant.  In sawmilling torque is king so diesels win every time.    
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Online Bruno of NH

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Re: Kubota d905 17-20 ish hp diesel
« Reply #2 on: March 10, 2020, 03:40:41 PM »
Did you check with Ez boardwalk and see if they would sell you a mill without the engine?
Their mill is built very heavy duty and would think it might handle the diesel engine better.
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Offline Nebraska

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Re: Kubota d905 17-20 ish hp diesel
« Reply #3 on: March 10, 2020, 05:03:28 PM »
 I Agree with Bruno, I think that would be a good combination.

Offline Linemanacdc

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Re: Kubota d905 17-20 ish hp diesel
« Reply #4 on: March 10, 2020, 10:29:24 PM »
Thanks for the advice, I thought the ez boardwalk was one I had tried to contact but didnít get a reply however I think it may have been by  email. I called and talked to a helpful feller that said they would be willing to sell one without the engine. It would be the ď40Ē model and the only thing I would possibly have to fiddle with would maybe be pulley size as the engine rpm may not be quite matched. I will kick it around a bit and see if that would be a good route to take to put the engine to good use. Thanks for the input, greatly appreciated!

Offline dgdrls

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Re: Kubota d905 17-20 ish hp diesel
« Reply #5 on: March 11, 2020, 09:14:07 PM »
Welcome

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D

Offline BargeMonkey

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Re: Kubota d905 17-20 ish hp diesel
« Reply #6 on: March 11, 2020, 09:56:30 PM »
 The only thing I would be leery with a generator engine is how the governor / idler control is set up, most of those small ones I've been around go high rpm out of the gate, be rough on belts. We had a deutz around 52hp ? In the sawmill originally, that wore out and we repowered it with a 70 ? Hp bigger turboed close to the same engine and honestly sometimes that lacks for power, you want to put the biggest engine you can in on a mill. 

Offline Linemanacdc

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Re: Kubota d905 17-20 ish hp diesel
« Reply #7 on: March 11, 2020, 10:54:40 PM »
That also looks like a good unit, and I like the idea of having more of a choice of options for purchasing. It looks like the dry weight of the engine is 205 lbs or up to 242 lbs with a flywheel and rear end plate mounted. Iíll give the guys at linns a shout sometime and get their opinions of the combination. 

Offline Linemanacdc

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Re: Kubota d905 17-20 ish hp diesel
« Reply #8 on: March 11, 2020, 10:57:14 PM »
Yeah you are correct about the high rpm out of the gate the way it is set up now. I would have to figure out a way of getting more of a control on the throttle, though I think it would be achievable as I can adjust it by hand when itís running at least. 

Offline BargeMonkey

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Re: Kubota d905 17-20 ish hp diesel
« Reply #9 on: March 11, 2020, 11:18:09 PM »
Another dumb thing to make sure on is rotation and how it matches up to the mill. I would ask someone who knows that model engine, I know on the small Cat excavators 301-303 you could literally wipe a crank out having the belts too tight, would want to make sure you dont have to much side load. My last employer put in some Mitsubishi's ? Around 30hp, had a gen mounted on 1 end, HPU on the other, it was a disaster. 

Offline Southside

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Re: Kubota d905 17-20 ish hp diesel
« Reply #10 on: March 11, 2020, 11:27:04 PM »
Yes - many a diesel was destroyed running a mill before they began to put on a crank support bearing.  Just too much lateral tension from the drive belt. 
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Offline Linemanacdc

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Re: Kubota d905 17-20 ish hp diesel
« Reply #11 on: March 11, 2020, 11:34:59 PM »
Yeah that makes sense. Must be because of the higher torque vs a gas Iím guessing? Ultimately I had visions of being able to just mount up a hydraulic pump to the motor and was hoping to run a hyd. motor to run a mill but Iíve kinda gathered there may not be any options to go that route

Offline BargeMonkey

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Re: Kubota d905 17-20 ish hp diesel
« Reply #12 on: March 11, 2020, 11:41:22 PM »
 Why mount a pump to run a hydro motor ? That's the expensive painful route I think ? Ours has a small hyd pump mounted off a drive belt to run the mill, be the way to go if you wanted hyd power. How much shaft is sticking out ? Enough to mount a pillow block and pulleys ? 

Offline Linemanacdc

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Re: Kubota d905 17-20 ish hp diesel
« Reply #13 on: March 12, 2020, 08:15:08 AM »
I guess the biggest reason I was thinking was simply because of reasons such as bending a crank and such. If I were able to avoid that side load it seems like it would make sense to me. I guess youíre right about the expensive part though. I remember buying a pump for a log splitter I built for just a 9 hp gas motor and it was speedy. It would make it a little easier to take beings I didnít have to give anything for the motor though. I actually havenít even unbolted the generator unit off it yet, I probably should do that. 

Offline gspren

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Re: Kubota d905 17-20 ish hp diesel
« Reply #14 on: March 12, 2020, 08:45:43 AM »
If the genny works maybe you should just try to sell the whole thing and buy a mill ready to go.
Stihl 041, 044 & 261, JD 2355 4X4 w/fel, JD 620, Yamaha Kodiak 400 & trailer, Kubota 400 RTV,  P&M OWB, 75 acres to play.

Offline pineywoods

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Re: Kubota d905 17-20 ish hp diesel
« Reply #15 on: March 12, 2020, 09:16:05 AM »
When you un-bolt the generator, you may find that the crank stub is tapered. Kinda hard to mount a pulley, but do-able. Sometimes a clutch assembley off a gas golf cart will fit the tapered shaft stub...
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Offline Linemanacdc

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Re: Kubota d905 17-20 ish hp diesel
« Reply #16 on: March 12, 2020, 09:38:27 AM »
Okay, thatís another thing I didnít think about being an issue(thatís why Iím here!) So with that being said if it in fact does end up being a tapered shaft crank that would also make it more difficult to incorporate a crank support Iím guessing?

Offline gspren

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Re: Kubota d905 17-20 ish hp diesel
« Reply #17 on: March 12, 2020, 05:07:46 PM »
If the shaft end is tapered and you cant find a straight adapter a machine shop could make one, cost dependent on whether or not you have a machinist buddy.  
Stihl 041, 044 & 261, JD 2355 4X4 w/fel, JD 620, Yamaha Kodiak 400 & trailer, Kubota 400 RTV,  P&M OWB, 75 acres to play.

Offline Linemanacdc

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Re: Kubota d905 17-20 ish hp diesel
« Reply #18 on: March 13, 2020, 08:10:18 AM »
Sounds good, Iíll have to see what happens when I get a couple more projects whipped out around here


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