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Author Topic: Adding Oil Cooler to RPM  (Read 56461 times)

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Offline fabr

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Re: Adding Oil Cooler to RPM
« Reply #15 on: January 16, 2016, 04:25:29 PM »
Quote from: Nutz4sand on January 16, 2016, 07:08:51 AM
The only thing with that in the RPM Fabr is the bottom end does sling the oil but only when it is in motion.

But I guess you likely know that? 

Spinning the top shaft in neutral for a long while will hurt the top bearings due to no oil being thrown up from the non moving bottom.
The bottom timing chain gear slung oil as well,just not to the right area. The combination of the slinger and the outward bulge around the front seal directed the oil to where it did the job. The gear alone did not do that. In fact it directed the oil from where needed. IMO,this is a simple fix if it is indeed a lube issue and not an undersized bearing issue ........ I feel the top bearing would have to run for a very,very long time in neutral to cause it harm. Ball bearings can run with very little lube under no/very low loading. Just my .02.
« Last Edit: January 16, 2016, 04:27:50 PM by fabr »
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Offline fabr

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Re: Adding Oil Cooler to RPM
« Reply #16 on: January 16, 2016, 04:36:29 PM »
Quote from: dsrace on January 16, 2016, 09:03:28 AM
http://www.ebay.com/itm/Heavy-Duty-Rear-Mount-Turbo-Oil-Gear-Pump-12v-Scavenge-Replace-STS-NEW-/161429648578?hash=item2595f4f4c2:g:98cAAOSwpdpVYBL-&vxp=mtr

or modify something like this kawi oil pump
http://www.ebay.com/itm/Kawasaki-KZ440-KZ-440-Belt-Drive-5319-Oil-Pump-/361457819738?hash=item542890a05a:g:6qwAAOSwo3pWgccR&vxp=mtr

or a small belt driven hydrolic pump and replace the belt pulley with a small sprocket and run it off the chain or something?
Did Rube Goldberg join the thread?  You guys are over thinking this. ;) but  8)
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but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Offline BDKW1

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Re: Adding Oil Cooler to RPM
« Reply #17 on: January 18, 2016, 02:06:37 PM »
Quote from: fabr on January 15, 2016, 08:25:49 PM
Was this just off the top of your head or are there people doing that? The concept is cool but,does it work in the real world?

Very old trick used on many buggy's.

Single acting cylinder.
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Offline fabr

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Re: Adding Oil Cooler to RPM
« Reply #18 on: January 18, 2016, 07:07:17 PM »
What keeps a single acting cylinder from sucking air past  the seals instead of oil into the cylinder?  A standard o ring seal or a single directional seal like most single acting cylinders will suck air on the non pressure/return stroke. I tried that once on another project. Damn thing sucked as much air into the system as it pumped oil.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Offline Nutz4sand

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Re: Adding Oil Cooler to RPM
« Reply #19 on: January 18, 2016, 08:31:32 PM »
Quote from: fabr on January 18, 2016, 07:07:17 PM
Damn thing sucked as much air into the system as it pumped oil.


I wonder if it would hurt much in this instance since there is air in the RPM tranny anyways and it still needs a vent to burp the air out as it warms/cools.

We need to machine fins into the RPM case. Yah thats the ticket!

And a fan on the RPM brake shaft. lol.

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Offline fabr

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Re: Adding Oil Cooler to RPM
« Reply #20 on: January 18, 2016, 09:04:12 PM »
If air entered the cylinder , it would just cavitate and stop pumping. The cylinder idea will work but I think it needs a cylinder piston with opposing seals to work well. In other words a cheap POS might not be a good idea. Perhaps machine a custom piston from aluminum for opposing seals to use in a cheapo cylinder?
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
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the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Offline Carlriddle

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Re: Adding Oil Cooler to RPM
« Reply #21 on: January 19, 2016, 05:21:31 AM »
You're going to need a Johnson's Rear End Pump. Mr Johnson recommended a .25 gear if I remember correctly. Nascar takeoffs are all over Ebay for around $100.
^^^This was from post on other site^^^
http://johnsonsoilpumps.com/product_frame.htm

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Offline fabr

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Re: Adding Oil Cooler to RPM
« Reply #22 on: January 20, 2016, 07:59:07 PM »
Could be as easy as using the right lube as well. Here is a link to a very informative study of gear lubes. Very eye opening.
'
http://www.lastgreatroadtrip.com/wp-content/uploads/2010/11/gear-oil-comparison.pdf
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"There can be no divided allegiance here.  Any man who says he is an American,
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flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Offline dsrace

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Re: Adding Oil Cooler to RPM
« Reply #23 on: January 21, 2016, 07:26:45 AM »
now we only ever checked box temp with a temp gun on enemy's box so we never actually knew the temp of the oil inside and we only checked the box temp after he stopped, skid to a stop so to speak but still not an accurate reading on internal oil temp at speed under top load. several readings were just under 210* on the aluminum case and that dropped to i believe 175* by adding an additional 1/2 oil over what shawn at jeffco said fill level was. that 35* speaks for itself but i can see the oil slinger or 2 of them needed in the top of the jeffco box for bearings on both sides. i always thought or wondered if jeffco designed that box to be layed down on it's side so all gears were floating in oil. the design of the box and the way it was designed to line up with the counter shaft sprocket case to case leads me to think that.
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Offline Enemy

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Re: Adding Oil Cooler to RPM
« Reply #24 on: January 21, 2016, 09:57:47 AM »
Always wanted to put a temp probe in that damn box and get the actual reading, doesn't seem to holdup long enough to bother. >:(
The Idaho trip is the longest it has been under a sustained load and did run considerably cooler using Red Line 50w racing oil @ 3 quarts (I will NOT run the recomended thick gear oil ever again) The noise I heard at the end of the trip has not been identified yet, but DS and I are leaning toward axle/suspension bind of some sort (hoping so anyway..) It was something very different that the last noises of a failing Jeffco. Will know more in the next few weeks..
 
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Offline Carlriddle

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Re: Adding Oil Cooler to RPM
« Reply #25 on: January 21, 2016, 11:06:37 AM »
If noise was after you joined the inverted club, that make sense on suspension bind.  Just a bit of tweeking going on there. 
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Offline fabr

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Re: Adding Oil Cooler to RPM
« Reply #26 on: January 21, 2016, 05:20:38 PM »
Ya just had to rub it in huh. Lol!!! 
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I participate in your fantasy"

Offline Enemy

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Re: Adding Oil Cooler to RPM
« Reply #27 on: January 21, 2016, 08:26:10 PM »
I kinda expected it sooner or later!
And just for the record, the noise was heard  BEFORE I went all Superman... with a pocket full of Kryptonite.


Sorry for the hijack Jerz!
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Offline jersdunz

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Re: Adding Oil Cooler to RPM
« Reply #28 on: January 21, 2016, 10:53:28 PM »
Quote from: Enemy on January 21, 2016, 08:26:10 PM
Sorry for the hijack Jerz!

lol are you kidding me, I've been irritated i Got to miss the Cartwheel Sense it happened... I wasn't sure it was possible... lol   

I am digging the temp Probe Idea. It'd be easy to put a tee on the hot side, in front of the pump.

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Offline dsrace

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Re: Adding Oil Cooler to RPM
« Reply #29 on: January 22, 2016, 10:20:03 AM »
pic doesn't show it all lol so here ya go of course this is LS not st A

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