RXV550 Oil pump

[starsky2013]

Hi,

does anyone know the flow rate for the RXV550 oil pump? I know it runs off the crank so the flow rate should vary with the RPM of the engine.

If some one could give the dimensions of the gerotor gears, the diameter of the outlet, and the gear ratio between crank and pump gear I may be able to calculate for it.

Thanks!!

[FORZA]

Why????

Dave Ward
Moto Italia
Aprilia-Ducati-Moto Guzzi

www.motoitalia.com.au

0432 441 985

[starsky2013]

Hi Dave,

I am in need of this data, because I am attempting to design the cooling system for a Formula SAE car.

Any information would be greatly appreciated.

[starsky2013]

So I've been studying the parts list and manual to see if I can work out the RPM relationship between oil pump and crank.

The first image shows the oil pump assembly, with the oil pump gear (no.14) with 12 teeth and this is meshed with the idle gear (no.19) which has 22 teeth. This can be clarified by the photo which was taken from the manual, and shows the oil pump gear which is located at the bottom of the picture in mesh with the gear above which it that has 22 teeth (the idle gear).

The third image shows the pinion gear of the crank (no. 9) which also has 22 teeth. Now I am unsure if I can simply consider just the oil pump gear and the pinion gear to find my needed gear ratio since these are my final driven and drive gear that I am interested; or are there more internal working gears that may be ganged which I don't know of since it is hard to tell from just all the given pictures in the manual.

From my understanding, it appears that the idle gear is somehow driven by the clutch? since the clutch housing had to be removed to expose the idle and oil pump gear that is shown in the photo. I believe that shaft in the picture is known as the primary gear shaft which is shown in the last image if that helps.
Attachment 192750

Attachment 192752
Attachment 192751

[matt_rider]

Hi,

Im assuming your with the Sydney Uni FSAE team,

With regards to cooling, are you talking just about oil cooling? because your water cooling system will need allot of attention too,

the main thing once you have a rough idea of what your water cooling systems operating temp will be (ie around a typical enduro stint) is to make sure your oil wont be cooled too low. Running your oil too cool will pose far worse problems that running it abit on the hot side, the reason why i say this, is that if you go with an oversized radiator design to be on the safe side, you could run into problems if you also have a well designed oil cooler and shroud.

I would also be interested in flow rates of the high pressure pump (capacity of the scavenger pump is around twice that of the hp pump to my understanding) as this could give an idea as to how low you could mount the oil tank. an issue that you guys and many other teams have run into with this engine as the oil inlet is at the top of the engine.

feel free to pm me if you need to talk things about fsae,

cheers,

Matt