quote:

Originally posted by welder:
Great! Approximately how long have they been in use?

2 years on the galv. and 4 months on the nickel.

For those considering a pump purchase for the FF60, and I have been stewing on this for way tooo long, I would like to share that I just had an excellent shopping experience with Surplus Center on the many reccomendations of Flyboy. I didn't expect that they would have a tech dept there to help you out with ordering and matching up components. Here is the list of what I bought. They did not have the bracket for the motor: ie foot mount. If anyone sees a problem with the order, please let me know. Turned out a bit less than I expected. $202 + shipping. Look forward to moving on!


1 21-1246-C 100 PSI 2.5" LF LM GAUGE 1 $16.95 To Be Picked
2 9-6901-8-8 SAE 8M x 1/2 NPTF 90 SWIVEL 1 $5.50 To Be Picked
3 9-6901-6-6 SAE 6M x 3/8 NPTF 90 SWIVEL 1 $4.80 To Be Picked
4 9-7146-B 0.37 cu in DYNAMIC GPF1061PC HYD PUMP 1 $74.95 To Be Picked
5 10-2367 1/2 HP 1725 RPM 115/230 VAC MOTOR 1 $94.95 To Be Picked
6 1-1230 5/8" L-050 JAW COUPLING HALF 1 $1.99 To Be Picked
7 1-1229 1/2" L-050 JAW COUPLING HALF 1 $1.99 To Be Picked
8 1-1231 BUNA-N INSERT FOR L-050 JAW COUPLING 1 $.99 To Be Picked

Did you figure pressure into your calculations? Remember that the flow decreases under 100 psi. Might not have enough flow in a coupled setting... that pump is rated for 2.98 GPM at 2000 rpm. With that motor, you'll only get 1725 rpm, which will take you to 2.5 gpm at freeflow. Once you get your pressure up, that will drop more, maybe even by half. You'll have to try once you get the stuff and see how it goes. You may need to add pulleys to adjust the ratios. That's what's nice about getting a separate pump and motor.

Glad to hear that things went well with surpluscenter.

Yes; I am a bit concerned. I thought at about 95 PSI I should be right about 2.7 gpm that the pump specs show. Being close coupled doesn't let me allow for error. Anyone else think this will suck?

quote:

Being close coupled doesn't let me allow for error.

Pulleys might work okay.

If you are going to use close coupled set up
get a faster Electric motor or a Pump with a biger displacement
You can alway lower the flow using a relieve valve
But you will not be able to increase the flow
unless you change your set up to a pulley one

I'm in the same boat as you right now shopping around and getting ready to jump
I wish there was a one solution fit all
But the more I read the more I get confused as there is to many choices.
I will really prefer a close coupled set up
as it look cleaner and less space.

Get close coupled, its simpler and more compact. The key is to exceed the flow and have an adjustable pressure relief valve. Don't go faster than 1725, most gear pumps can't handle faster, especially with thick VO. My gear pump does almost double the flow I need and its no problem. Not enough flow is a big problem.

So there are at least 2 of us EL. I really don't want to spread my system out with belts & pulleys either.
Surplus Center had no problem with putting my order on hold while I go back to the drawing board. Since the ratings from Surplus Center do not indicate at what pressure they are measured, I asked a Techie there how that worked. He did not know. Actually, he thought it was around 1,000 psi; I knew we were in trouble then. So he gave me the name & # of Dynamic Fluid Components in S.C. which is the distributer for the Dynamic line in the US. (Chinese pumps of course...) They did not know either! However, they are willing to run a test for me/us at 95-100 psi with hydraulic fluid to find out which pump will give us a roughly 2.7 gpm supply from a 1725 rpm motor. I am guessing that VO would be a bit more viscous than hydraulic fluid but I hope that basis will be close enough.

WOW, you got someone who was willing to help you to that level? That's incredible. Please let us know what they have to say.

It's not the cheapest option, but to me, this Grainger 6PA32 seems to be the ideal close-coupled pump. Fryer-to-fuel carries it as well if you don't have a grainger account:
http://www.fryer-to-fuel.com/store/page14.html

Actual results from the Dynamic Pump folks for the .37 cu in pump running at 1725 RPM and 100 PSI were 2.7 gpm or pretty much as calculated. It seems that the 100 PSI was a very low number and didn't make much difference from their rated number which may have been at free flow. They said these pumps are cmmonly used at 1,000-1,500 PSI in their hydraulic applications.
That being done, I found two .40 cu in pumps of which I purchased Parker brand which might be made in the USA. It puts out 3.19 gpm @ 1725 RPM. For those down the line who might want all the part #'s, here is the order. @$300.00 this time since the coupling for a splined shaft is more expensive and they did have a Pump Mount for this one.
1 21-1246-C 100 PSI 2.5" LF LM GAUGE 1 $16.95 To Be Picked
2 9-6901-12-12 SAE 12M x 3/4 NPTF 90 SWIVEL 1 $5.95 To Be Picked
3 9-6901-10-12 SAE 10M x 3/4 NPTF 90 SWIVEL 1 $8.55 To Be Picked
4 9-6800 .40 cu in PARKER HYD PUMP 1 $89.99 To Be Picked
5 10-2367 1/2 HP 1725 RPM 115/230 VAC MOTOR 1 $94.95 To Be Picked
6 1-2000 5/8 24B KTR COUPLING HALF 1 $10.00 To Be Picked
7 1-2008 5/8-9 TOOTH SPLINE 24B KTR COUPLING HALF 1 $23.50 To Be Picked
8 1-2011 INSERT FOR 24B SERIES KTR COUPLING 1 $10.50 To Be Picked
9 933 2 BOLT PUMP MOUNT 1 $34.95 To Be Picked

Thanks to those who helped with this. Interpolating SunWiz's note, the maxim could be "Exceed the Need!"

Very good News I was almost giving up on the closed couple set-up
and starting to look at the pulley
I think I'm going to place my order this week-end
(it will be a copy of your list and some extra valve and High pressure Hose)
I just wanted to know what Relief Valves are you going to use
That's the one I'm thinking of ( Bronze EZ-Adjustable Relief Valves
mcmaste.com --> 8088K14 $21.76)
What do you think about this

Item# 21-1667 $ 1.99 200 PSI 2.5 BM LF GAUGE
I like this gauge as it has green graduation 80 psi to 120 psi
Item# 9-7148-D 0.48 cu in DYNAMIC $93.95 This may be overkill

quote:

Originally posted by EL:
Very good News I was almost giving up on the closed couple set-up and starting to look at the pulley

Or, as I've done (I have built 4 of them). Buy a 1725 motor off ebay, get a pump and connect them with a lovejoy connection. Low cost and works great.

Sam

quote:

Item# 21-1667 $ 1.99 200 PSI 2.5 BM LF GAUGE
I like this gauge as it has green graduation 80 psi to 120 psi
Item# 9-7148-D 0.48 cu in DYNAMIC $93.95 This may be overkill

EL- I like that gauge too except for the back mount and 1/8" NPT Sure is a lot less $$.
With the pump, I was aiming for minimal amounts of overkill. The .40 ci pumps at 3.19 gpm should be way more than sufficient.

Sam- I'd be with you on the DIY side normally but I didn't want to spend ages on getting parts and hoping they fit. For example, I don't believe the Lovejoy couplings work in a splined shaft. And getting the SAE-NPT fittings all in one fell swoop is worth a lot of time which I can't seem to find enough of anymore! I've got a different idea of a LoveJoy connector and need some time for it! And then I've still got my truck waiting to get finished converting!

quote:

@$300.00 this time since the coupling for a splined shaft is more expensive and they did have a Pump Mount for this one.

The pump I mentioned above is $323. For $23 more you don't have to assemble anything.

quote:

quote:
@$300.00 this time since the coupling for a splined shaft is more expensive and they did have a Pump Mount for this one.


The pump I mentioned above is $323. For $23 more you don't have to assemble anything.

--- That's true enough and a good setup I expect. This is just another option and you might note that about $30.00 of the $300 bill is a gauge and other fittings.

Does the stuff you collect from your rotor bowl look like this. This was all I could scrape out of the bowl after the second three hours of spinning. One overheaping teaspoon full. Very thick, like gum, it all stuck to the spoon. The stuff next to the bowl was the driest and seemed to have no liquid component. Is this about what you all get?

goop.jpg (15 Kb, 44 downloads)

Hi guys. I just ordered an FF60LE today. Mike said their shipment is delayed a bit, apparently demand for the FF60s was higher than expected. He said they'd send it out some time next week.

I was asking the fellas over on Sunwizards DieselCraft thread about motor/pump sizing, but so far I haven't got any replies yet.

Anyway, I can figure out the pump head sizing issue pretty easilly, but the motor HP requirement is a bit of a mystery to me. You see, DieselCraft sells a 1/3 HP motor/pump combo for their OC20 CFs and also use the same 1/3 HP motor for their OC50 motor/pump combo. Basically, I'm not sure if they overpowered the OC20 slightly and the OC50 combo has just barely enough power to do the job, or if the OC50 is well equipped and the OC20 is waaaaay overpowered.

I don't want to waste too much extra electrical power if I don't have to, but I also don't want a sluggish Fc. To complicate things, I am also thinking it might make sense to buy a stronger motor than what's needed in order to leave extra power capacity for future expansion. For example, even though DieselCraft sells 1/3HP mptors for their OC50s, I could buy a 1 HP motor and use the motors RPM rating to calculate the required "per revolution" displacement of hydraulic pump required to feed oil to my FF60LE. Because the 1 HP motor is overkill, this would allow me to simply buy a larger pump head when/if I ever need to add another FF60 (or two).

Should I buy a 1/3 HP, 1/2 HP, 3/4 HP, or a 1HP motor? Where I live, electricity is cheap, but I still don't need to waste it unecessarilly. I have found that the motors all seem to be about $100 or so. If $100 buys a 1/3 HP and $120 buys 1 HP, which is the smarter deal?

Here's some motors to look at:



1/3HP=$98.95
http://www.surpluscenter.com/item.asp?UID=2008041505343...tem=10-2370&catname=

1/2 HP=$103.95
http://www.surpluscenter.com/item.asp?UID=2008041505343...tem=10-2371&catname=

3/4 HP= $117.95
http://www.surpluscenter.com/item.asp?UID=2008041505343...tem=10-2378&catname=

1 HP=$124.95
http://www.surpluscenter.com/item.asp?UID=2008041505343...tem=10-2373&catname=



Any advice on Cf pump motors would be appreciated.

quote:

Originally posted by Muleears:
Is this about what you all get?

It all depends on the VO, sometimes I get much more, sometimes less than that.

quote:

Originally posted by Muleears:
Does the stuff you collect from your rotor bowl look like this.

Yes, that is the stuff. But wait! Before you clean that spoon, take a torch and burn off the flammables and take another photo!

Sam

I have a couple of questions regarding the Spin Clean. I am using it (FF60LE) to wash out the soaps and any residual water in my finished biodiesel.

The O-rings are clearly natural rubber, and my biodiesel has caused them to swell to the point where they won't go back into the sealing points. Does anyone know the sizes to get viton seals?

Also is it ok to set these up on a timer so they can be set to run for a few hours and then turn off on their own? I am not that worried about capturing anything on shutdown.