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Dry sump or Swivel on Hayabusa Caterham??
darth G-F - 18/4/05 at 04:37 PM

I am buying a Hayabusa powered Caterham. Since it is using a motorcycle engine, it is recommended to use a dry sump for track use. However, I found a guy that sells a special sump with a swivel for car equipped Hayabusas. Swivel pan picture.

I was wondering if some of you had any idea how good the swivel solution can be. The swivel is much cheaper and much more simple than the dry sump. A guy I know said they used that solution on their SAE Formula car. So it shouldn't be that bad.

What do you think??


Jon Ison - 18/4/05 at 04:40 PM

do a search on here

http://uk.groups.yahoo.com/group/bike-engined-cars/messages

they where disscussed at length recently, i cant comment, never used one.


Rorty - 19/4/05 at 04:53 AM

What are these swivels? Any links or pictures?


ned - 19/4/05 at 10:03 AM

are you referring to an accusump?

Ned.


ChrisGamlin - 19/4/05 at 11:28 AM

I dont think so, I assume it is one of these, basically the oil pickup pipe can swivel and because it is weighted it always swings away from the direction of acceleraration, a bit like a weather vane always pointing into the wind.
It may work fine but I can see potential problems if the swivel doesnt seal properly, cos as soon as you start sucking in air at the swivel its only a matter of time before it causes damage.


Rorty - 19/4/05 at 01:16 PM

quote:
Originally posted by ChrisGamlin
It may work fine but I can see potential problems if the swivel doesnt seal properly, cos as soon as you start sucking in air at the swivel its only a matter of time before it causes damage.

Exactly my thoughts. I couldn't believe it was actually a swiveling pickup, because, to be free enough to swivel reliably, it would be loose enough to suck air.
A weighted, swinging pickup with a flexible hose is something that could work I suppose.


locoboy - 19/4/05 at 01:25 PM

Am i reading this right Is it a pipe that tracks the surge of oil to ensure (theoreticaly) that it will always have oil to suck up?

Doesnt sound too convincing an arrangement to me .............. if i am reading it right that is.


ChrisGamlin - 19/4/05 at 01:28 PM

I guess it might not matter if the swivel sealing face was very close to the bottom of the sump so if it did leak then it would only in effect become a normal pickup and would usually be submerged in oil?


Rorty - 19/4/05 at 01:59 PM

quote:
Originally posted by ChrisGamlin
I guess it might not matter if the swivel sealing face was very close to the bottom of the sump so if it did leak then it would only in effect become a normal pickup and would usually be submerged in oil?

If that was the case, why bother with the swivel part at all?
It all seems a bit dodgy to me; like a Bandaid. It's the life blood of the engine and not something you'd want to take chances with.


darth G-F - 19/4/05 at 02:08 PM

Thanks guys. Yeah I know it is not the ultimate best solution. I was just wondering if anyone was using it.

They used it the SAE formula car with good success. So it might be a worthy solution. However, I agree that it is far from being the "best" solution.

If you know anyone that uses it, I'd like to have first hand opinion. If this can't prove reliable, I'll go dry sump and be done with it.


ChrisGamlin - 19/4/05 at 02:55 PM

quote:
Originally posted by Rorty
If that was the case, why bother with the swivel part at all?
It all seems a bit dodgy to me; like a Bandaid. It's the life blood of the engine and not something you'd want to take chances with.


Totally agree, I guess I was trying to say was how it might work (as in not make the engine go pop) rather than work as in be a good solution


ChrisGamlin - 19/4/05 at 08:49 PM

I just remembered, these were discussed as well on the Yahoo BEC list about a month ago, use the "Msg#" box to skip to message number 54918 on 23rd March