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Alan,
How do you plan to cool the engine?
Lee
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SEZ right there he got a heat exchanger. Am I missing something???
On 9/25/09 5:53 PM, Lee Yonkers wrote :
Quote:Alan,How do you plan to cool the engine?
Lee
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Ah! But the devil is in the details. I have pretty much the same setup. . . a Kubota engine, turning a 150 amp alternator, a heat exchanger keeping everything cool. Where I am having trouble with my setup is the raw water pump that feeds the heat exchanger. I want a continuous duty 12 volt pump that is self priming and will last more than two years. The raw water pump I installed two years ago, a Flo-Jet, gave up the ghost and I doubt it had more than 20 hours on it. I don’t believe the pump needs to move more than 2 gallons per hour.
Lee
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Hi Lee,
You definitely need more than 2 gallons per hour. Try this: http://groban.com/Pumps_Water_Jabsco_Pump_1673-001.html I purchased two of these as spare water pumps for a W58. It is self priming up to 10 feet, I think, and your generator is well within that distance to seawater. You may have to drill holes in the feet and change the fittings for bronze, but for $89, you could screw one up and still purchase two more for less than an Oberdorfer.
Bob
PS, you'll probably waste a lot of time browsing through the Groban site because there is a lot of neat stuff…
On Sat, Sep 26, 2009 at 5:19 AM, Lee Yonkers < ([email][/email])> wrote:
Quote:Ah! But the devil is in the details. I have pretty much the same setup. . . a Kubota engine, turning a 150 amp alternator, a heat exchanger keeping everything cool. Where I am having trouble with my setup is the raw water pump that feeds the heat exchanger. I want a continuous duty 12 volt pump that is self priming and will last more than two years. The raw water pump I installed two years ago, a Flo-Jet, gave up the ghost and I doubt it had more than 20 hours on it. I don't believe the pump needs to move more than 2 gallons per hour.Lee
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Bob,
I would like to power the pump using the Kubota, but I just don’t see any practical way of mounting the pump up there. Do you believe a small 12V DC motor would suffice? My experience base with DC motors stops with starter motors.
Lee
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Robert,
WOW! what a find! I paid a lot more than that for the pump I used. Here is a photo of how I mounted it. The “oil pan” of the Kubota is replaced by a 3/8 thick aluminum sheet (which I home anodized after machining). There is a slight slot milled on the pump side of that plate, two screw slots, and counter slots for the heads of the bolts on the other side. The pump bracket, just a thick angle of aluminum, then can slide up and down a little in the slot to allow for the tensioning of the belt. I used a kevlar/poly belt.
Pete
Robert Fine wrote:
Quote:Hi Lee,You definitely need more than 2 gallons per hour. Try this: http://groban.com/Pumps_Water_Jabsco_Pump_1673-001.html I purchased two of these as spare water pumps for a W58. It is self priming up to 10 feet, I think, and your generator is well within that distance to seawater. You may have to drill holes in the feet and change the fittings for bronze, but for $89, you could screw one up and still purchase two more for less than an Oberdorfer.
Bob
PS, you’ll probably waste a lot of time browsing through the Groban site because there is a lot of neat stuff…
On Sat, Sep 26, 2009 at 5:19 AM, Lee Yonkers < ([email][/email])> wrote:
Quote:Ah! But the devil is in the details. I have pretty much the same setup. . . a Kubota engine, turning a 150 amp alternator, a heat exchanger keeping everything cool. Where I am having trouble with my setup is the raw water pump that feeds the heat exchanger. I want a continuous duty 12 volt pump that is self priming and will last more than two years. The raw water pump I installed two years ago, a Flo-Jet, gave up the ghost and I doubt it had more than 20 hours on it. I don’t believe the pump needs to move more than 2 gallons per hour.Lee
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Hi Lee,
There are definitely 12v continuous duty pumps for corrosive
environments. Look at Graingers, McMaster-Carr, or Tractor Supply
(used for fertilizer and herbicide/pesticide applications). There are
also a/c pumps for marine use that are not self priming, but are
continuous duty and can be mounted in the bilge.I can get model numbers, but so can you…
Bob
On 9/26/09, Lee Yonkers <> wrote:
Quote:Bob,I would like to power the pump using the Kubota, but I just don’t see any
practical way of mounting the pump up there. Do you believe a small 12V DC
motor would suffice? My experience base with DC motors stops with starter
motors.Lee
________________________________
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Lee:
Alan had asked the same question on the SSCA DB. Here is the thread:
http://www.ssca.org/phpBB3/viewtopic.php?f=4&t=8747
http://www.ssca.org/phpBB3/viewtopic.php?f=4&t=8747Paul
Quote:Date: Sat, 26 Sep 2009 12:05:41 -0400
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Pete,
Your solution will solve my problem perfectly. I checked my Kubota and where your engine driven drive is located I seem to have a plug of some sort. I stuck me finger in the hole and I felt a machined plug. Can you give me any more information on how you got the – for the lack of a better term – power take off to work? I appreciate any help/information you can give me.
Lee
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My Kubota had a provision for a hand crank. I used a disk
grinder/parting disk to cut away the housing around that shaft. Then I
sawed off and ground smooth the pins on that shaft where the hand crank
would have gone. I understand that there are versions of this engine
that do not have a shaft emerging from the case here but rather have the
hole plugged where the shaft seal would have gone. If your shaft does
not not emerge from the case, you might be able to swap out this shaft,
but that would involve a pretty extensive teardown of the engine.Pete
Lee Yonkers wrote:
Pete,
Your solution will solve my problem perfectly. I checked my Kubota and
where your engine driven drive is located I seem to have a plug of
some sort. I stuck me finger in the hole and I felt a machined plug.
Can you give me any more information on how you got the – for the lack
of a better term – power take off to work? I appreciate any
help/information you can give me.Lee
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The missing shaft is gear driven from the inside. If you did find the shaft, to install it you’d have to tear the engine apart.
My solution is to use a 12v water puppy for cooling. I’ll have it come on after the engine starts up ( oil pressure switch). I ve been working on it as I travel down the Hudson river.
I’ll let you know how I make out.
alan— On Sat, 9/26/09, Pete Dubler <> wrote:
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Hi Alan,
If the shaft you have is what I think you have then there is an
Obedorfer pump with the proper shaft to slip directly into that hole
and engage the shaft. There should also be two bolt holes near that
hole to mount the pump.Any Universal dealer will have the pump, but a Kubota dealer might,
too. Also, a Beta Marine dealer. It is as expensive as any marine raw
water pump (Panda Generators use that engine, too as does some other
generator manufacturer_)Bob
On 9/26/09, Alan <> wrote:
Quote:The missing shaft is gear driven from the inside. If you did find the
shaft, to install it you’d have to tear the engine apart.
My solution is to use a 12v water puppy for cooling. I’ll have it come on
after the engine starts up ( oil pressure switch). I ve been working on it
as I travel down the Hudson river.
I’ll let you know how I make out.
alan— On Sat, 9/26/09, Pete Dubler <> wrote:
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Sorry for the long delay in responding. Ive been traveling down the Hudson River and internet is spotty at best. I am in NYC now and have a good connection.
Some models of the E300 have that shaft and some model don’t. If you have the shaft than the pump you have suggested will work. If you don’t have that shaft, then the case will need to be opened and the shaft installed. It depends on which model you have.
Mine does not have the shaft. Just a hole with a plug in it. I have the shop manual.
Somehow Ive lost most of this thread. Who else besides Pete and I have been fooling around with a Kubota.
alan— On Sun, 9/27/09, Robert Fine <> wrote:
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Alan,
I have been trying to figure out how to cool my Kubota. I much prefer using an engine driven pump rather than a 12 V driven one. I would love to have a copy of the shop manual.
I pretty much have given up on the engine driven pump for this season. I called Depco pumps and told them what I needed from a 12V pump and they recommended one for me. It should be here this week and I’ll install it. Next summer I’d like to either add the shaft or try to see if I can get Phasor Marine to help me convert to their system.Are you going to Annapolis?
Lee
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