Engine oil surge

[TeoAlfa]

Hello!
I will start this thread to speak about oil surge in motorcycle engines fitted to automobiles.
Let's say that we have 7-8 bar oil pressure after the oil pump. The main oil gallery is vertical and let's say that we turn with 2g lateral acceleration. How much the oil pressure is going to be lowered and what's the physical explanation and proof of this?
Thanks in advance!

 

[ivymike]

...except for the magnitude

 

[thundair]

http://www.legendscars.com/

http://www.pages.drexel.edu/fsae/history.html

http://purplesagetradingpost.com/sumner/bvillecar/construction page-2.html

I would consider changing to dry sump, they do it all the time with automotive after market.

Cheers

I don't know anything but the people that do.

 

[evelrod]

Pat's last post pretty well says it all. When the oil pickup is adjacent to a bunch of whirling gears it adds one more reason oil may not be at the pickup momentarily under certain cornering situations...that is why I use an oil accumulator (e.g., Accusump) on my wetsump race cars. My 48 Norton is dry sump and has no problems even with a side hack.

Rod

 

[thruthefence]

Motorcycle engine in a car?

here's a few:

http://www.youtube.com/watch?v=aEdmmWb9DhQ

http://www.youtube.com/watch?v=rbUaCct_Y9o

http://www.youtube.com/watch?v=O4AattlzskA

They use 'dedicated' electric motor for reverse.

I bet the mini is a blast.

 

[MechanicalChef]

Formula SAE also uses 600cc engines.

 

[Burnit]

I have read this over & over again & still the original question depends on some variables.
The oil gallery is small, enclosed & vertical with a pressure at 7-8bar.
A 2g lateral acceleration will have little or nil effect taking into account the small size of gallery under that kind of pressure.
It MAY be a different story if the gallery size was of huge size & volume but such a small cavity under that sort of pressure i believe speaks for itself unless air is trapped in the gallery somewhere maybe.

Pat & others have answered the pickup out of the oil syndrome, personally at 2g lateral force i would think changing the underwear would have more relevance in this senario than the oil issue.

If problems are encountered with this issue then counteract them with slightly more oil pressure--job done.

Thanks

 

[SomptingGuy]

You have to love the bike/car thing on this page:

http://www.boostbusters.com/motorutv.asp

- Steve