Just because it's been a while: Kawasaki Oil Coolers

Related:
Create New Tag

7/17/2019 3:47 AM

MXGP Factory Kawasaki Oil Cooler: beautifully done, short oil lines, good location, clean flow through the cooler.


American Factory Kawasaki: dumbest piece of equipment ever put on a bike

|

7/17/2019 4:21 AM

Im sure what were seeing is KHI trying two different designs. If the GP style works well im sure MEK will use it.

|

7/17/2019 6:26 AM

#434 wrote:

MXGP Factory Kawasaki Oil Cooler: beautifully done, short oil lines, good location, clean flow through the cooler.


American Factory Kawasaki: dumbest piece of equipment ever put on a bike

One of these bikes wins races

|

7/17/2019 6:30 AM

#434 wrote:

MXGP Factory Kawasaki Oil Cooler: beautifully done, short oil lines, good location, clean flow through the cooler.


American Factory Kawasaki: dumbest piece of equipment ever put on a bike

early wrote:

One of these bikes wins races

Hahahah!!

|

KTM Keys to the moto:
Get a good start
Don't blow it

7/17/2019 7:49 AM

Cooler oil helps the clutches last longer!

|

7/17/2019 7:52 AM

On topic, the stack plate type cooler that the US team uses is a more efficient than the tube style the GP team uses and cools more fluid faster. The tube style is cheaper and the least efficient of cooler designs and not as durable.

|

2018 KTM 250sx
Instagram CamaroAJ

7/17/2019 8:21 AM

Mav coming in with them receipts, you love to see it.

Also OP one of those bikes is consistently a threat to win and the other never sniffs the damn podium. But sick fucking oil cooler dude, you euros are just so advanced compared to us.

|

If it can't be fixed with a hammer, it's an electrical problem.

7/17/2019 9:29 AM

so what is that thing on the side of Eli's cylinder?

|

Never try to argue with idiots; they will only bring you down to their level.....and being more experienced, they will beat you at their own game!


2006 KX250

7/17/2019 10:11 AM

bvm111 wrote:

so what is that thing on the side of Eli's cylinder?

It's Kawi's new Push to Pass system. Been working really well this year.

|

7/17/2019 1:57 PM

AJ565 wrote:

On topic, the stack plate type cooler that the US team uses is a more efficient than the tube style the GP team uses and cools more fluid faster. The tube style is cheaper and the least efficient of cooler designs and not as durable.

In addition, the US Team's location on the left side of the bike avoids radiant heat from the header pipe, allowing for a slightly cooler surface temp on the oil cooler. It also doesn't impede the airflow from the right-side radiator, which has that problem itself. I bet the above results in a measurable difference in oil temps and water temps under any given load.

|

Braaapin' aint easy.

7/17/2019 3:01 PM
Edited Date/Time: 7/17/2019 3:02 PM

AJ565 wrote:

On topic, the stack plate type cooler that the US team uses is a more efficient than the tube style the GP team uses and cools more fluid faster. The tube style is cheaper and the least efficient of cooler designs and not as durable.

It‘s not a tube style cooler.
Here‘s anthor pic from GP Bits:


|

7/17/2019 3:11 PM

AJ565 wrote:

On topic, the stack plate type cooler that the US team uses is a more efficient than the tube style the GP team uses and cools more fluid faster. The tube style is cheaper and the least efficient of cooler designs and not as durable.

#434 wrote:

It‘s not a tube style cooler.
Here‘s anthor pic from GP Bits:


Ah, well in that case its still not as efficient of a cooler as a stacked plate cooler. The plate/fin cooler is better that the tube/fin cooler though.

https://transmissioncoolerguide.com/transmission-cooler-types/

|

2018 KTM 250sx
Instagram CamaroAJ

7/17/2019 5:32 PM
Edited Date/Time: 7/19/2019 3:43 AM

I'm wondering how long before bikes just come with an instrument panel to operate things. Builder was uncrating a new 2020 yz450f and the damn thing has 4 buttons spread out over the bars. Kill, map, tc and start button...lol

|

RIDEMPS.COM

7/17/2019 6:30 PM

AJ565 wrote:

On topic, the stack plate type cooler that the US team uses is a more efficient than the tube style the GP team uses and cools more fluid faster. The tube style is cheaper and the least efficient of cooler designs and not as durable.

Falcon wrote:

In addition, the US Team's location on the left side of the bike avoids radiant heat from the header pipe, allowing for a slightly cooler surface temp on the oil cooler. It also doesn't impede the airflow from the right-side radiator, which has that problem itself. I bet the above results in a measurable difference in oil temps and water temps under any given load.

Also, it's mounted lower which reduces the pressure drop across the cooler and places it closer to the center of mass of the motorcycle.

Think of it as a radiator lowering kit.

|

7/17/2019 11:07 PM
Edited Date/Time: 7/18/2019 1:13 AM

AJ565 wrote:

On topic, the stack plate type cooler that the US team uses is a more efficient than the tube style the GP team uses and cools more fluid faster. The tube style is cheaper and the least efficient of cooler designs and not as durable.

#434 wrote:

It‘s not a tube style cooler.
Here‘s anthor pic from GP Bits:


AJ565 wrote:

Ah, well in that case its still not as efficient of a cooler as a stacked plate cooler. The plate/fin cooler is better that the tube/fin cooler though.

https://transmissioncoolerguide.com/transmission-cooler-types/

Doesn‘t really matter if you don‘t flow air through it..
The cooler on Eli‘s bike is mounted parallel to the main flow direction and the air is funneled through a small air scoop coming from the water cooler.
So they take already hot air (which the other one does too) and try to force it to flow around a cooler that’s mounted 90 degrees to what it should be mounted. There just isn‘t any flow through the cooler and without flow, the cooler is more like an external oil tank just sitting there. Plus it exposes a large surface to the very close cylinder head which by itself radiates a lot of heat.
I get the point of mounting it low and closer to the center of mass of the bike. But if they would mount the cooler in a position where it could get a decent amount of air flow it could be half the size to do the job and therefore be lighter.

|

7/18/2019 6:00 AM

Which one is on the red background bike. That's the one i'd want.

|

2018 CRF250R

7/18/2019 6:17 AM

#434 wrote:

Doesn‘t really matter if you don‘t flow air through it..
The cooler on Eli‘s bike is mounted parallel to the main flow direction and the air is funneled through a small air scoop coming from the water cooler.
So they take already hot air (which the other one does too) and try to force it to flow around a cooler that’s mounted 90 degrees to what it should be mounted. There just isn‘t any flow through the cooler and without flow, the cooler is more like an external oil tank just sitting there. Plus it exposes a large surface to the very close cylinder head which by itself radiates a lot of heat.
I get the point of mounting it low and closer to the center of mass of the bike. But if they would mount the cooler in a position where it could get a decent amount of air flow it could be half the size to do the job and therefore be lighter.

Well it is in a carbon fiber box that directs air flow to it and vents it out of it, so I mean it looks like they have that covered. I feel you're over thinking things a bit here on how air flow works and where its coming from. Being towards the bottom of the radiator that should be the coolest spot (if the hot water flows in from top to bottom). Also being a more efficient design lets it work better than the other designs so even if it has less air flow its still transferring more heat to the available air that is going over it. I'm not saying either setup is better than the other here, I'm just saying the cooler the US team uses is a better design vs. the GP team.

|

2018 KTM 250sx
Instagram CamaroAJ

7/18/2019 6:22 AM

#434 wrote:

It‘s not a tube style cooler.
Here‘s anthor pic from GP Bits:


AJ565 wrote:

Ah, well in that case its still not as efficient of a cooler as a stacked plate cooler. The plate/fin cooler is better that the tube/fin cooler though.

https://transmissioncoolerguide.com/transmission-cooler-types/

#434 wrote:

Doesn‘t really matter if you don‘t flow air through it..
The cooler on Eli‘s bike is mounted parallel to the main flow direction and the air is funneled through a small air scoop coming from the water cooler.
So they take already hot air (which the other one does too) and try to force it to flow around a cooler that’s mounted 90 degrees to what it should be mounted. There just isn‘t any flow through the cooler and without flow, the cooler is more like an external oil tank just sitting there. Plus it exposes a large surface to the very close cylinder head which by itself radiates a lot of heat.
I get the point of mounting it low and closer to the center of mass of the bike. But if they would mount the cooler in a position where it could get a decent amount of air flow it could be half the size to do the job and therefore be lighter.

All of that is true. But if that cooler is getting them to the temps they need even tho its not maximizing efficiency, thats probably just fine.

|

7/18/2019 6:36 AM

#434 wrote:

Doesn‘t really matter if you don‘t flow air through it..
The cooler on Eli‘s bike is mounted parallel to the main flow direction and the air is funneled through a small air scoop coming from the water cooler.
So they take already hot air (which the other one does too) and try to force it to flow around a cooler that’s mounted 90 degrees to what it should be mounted. There just isn‘t any flow through the cooler and without flow, the cooler is more like an external oil tank just sitting there. Plus it exposes a large surface to the very close cylinder head which by itself radiates a lot of heat.
I get the point of mounting it low and closer to the center of mass of the bike. But if they would mount the cooler in a position where it could get a decent amount of air flow it could be half the size to do the job and therefore be lighter.

It’s a damn shame these teams don’t have really smart, accomplished engineers on staff to help them figure these things out.

|

7/18/2019 8:03 AM

AJ565 wrote:

Ah, well in that case its still not as efficient of a cooler as a stacked plate cooler. The plate/fin cooler is better that the tube/fin cooler though.

https://transmissioncoolerguide.com/transmission-cooler-types/

#434 wrote:

Doesn‘t really matter if you don‘t flow air through it..
The cooler on Eli‘s bike is mounted parallel to the main flow direction and the air is funneled through a small air scoop coming from the water cooler.
So they take already hot air (which the other one does too) and try to force it to flow around a cooler that’s mounted 90 degrees to what it should be mounted. There just isn‘t any flow through the cooler and without flow, the cooler is more like an external oil tank just sitting there. Plus it exposes a large surface to the very close cylinder head which by itself radiates a lot of heat.
I get the point of mounting it low and closer to the center of mass of the bike. But if they would mount the cooler in a position where it could get a decent amount of air flow it could be half the size to do the job and therefore be lighter.

kb228 wrote:

All of that is true. But if that cooler is getting them to the temps they need even tho its not maximizing efficiency, thats probably just fine.

You’re 100% right. It works, gets the temp down a little, adds oil volume. Why change what works?!
For me as engineer, the solution they come up with leaves a lot of question marks. And it‘s fun to debate about it

|

7/18/2019 8:25 AM

#434 wrote:

You’re 100% right. It works, gets the temp down a little, adds oil volume. Why change what works?!
For me as engineer, the solution they come up with leaves a lot of question marks. And it‘s fun to debate about it

What if the reason they put it there is that it is less likely to be damaged in a crash? A damaged oil cooler will put you out of a race quicker than a damaged coolant radiator. Not all decisions are 100% efficiency/performance based.

|

7/18/2019 8:41 AM

kb228 wrote:

All of that is true. But if that cooler is getting them to the temps they need even tho its not maximizing efficiency, thats probably just fine.

#434 wrote:

You’re 100% right. It works, gets the temp down a little, adds oil volume. Why change what works?!
For me as engineer, the solution they come up with leaves a lot of question marks. And it‘s fun to debate about it

early wrote:

What if the reason they put it there is that it is less likely to be damaged in a crash? A damaged oil cooler will put you out of a race quicker than a damaged coolant radiator. Not all decisions are 100% efficiency/performance based.

Totally possible! Like I said: it's fun to debate about it.
I think the put it there to get it closer to the center of mass. In the Villopoto days they put it behind the cylinder:

Source: MXA

|