Gripenland
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| posted on 28/6/06 at 07:26 PM |
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Feedback on plans to baffle a Busa wet sump
Hi!
I would much appreciate some input on how to baffle my shallow sump 
This is how it looks standard:
I'll not use the orange foam.
I would like an oil trap (red) around the oil pickup (black) with trapdoors (blue lines) that will let oil in but not out.
In order to get oil down to the sump from the crank case I plan on using guide plates (blue) that protrudes up in to the crank case.
The guide plates have en incline of 45 deg down towards the oil trap. The plan is to get the plates to catch dripping oil from the crank and the
gearbox.
Oil that isn’t caught by the guide plates will end up on the “sump cover” and eventually drain into the sump.
What do you think? Will it work?
kokos-racing.com
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ChrisGamlin
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| posted on 28/6/06 at 08:20 PM |
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Its hard to visualise whats you intend but I would suggest it maybe looks a tad complicated, and on a £3k engine you don't want to take any
chances if you're not absolutely sure what each feature will achieve.
Have you spoken to Holeshot or Dax and see what they use?
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Gripenland
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| posted on 29/6/06 at 05:41 AM |
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Thx for you imput Chris
Dax uses standard or chopped standard sumps. I think Holeshot uses a baffled one.
I see what you meen by "a tad complicated". I think I can simplify the oil trap and just use one trap door. But I think that the
guideplates must be kept in order to lead oil past the sump cover in accelerations around 1g.
kokos-racing.com
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Phil.J
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| posted on 29/6/06 at 08:38 AM |
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Have you considered using a swivelling pickup which moves with the body of oil when cornering?
Have a look here for an example http://www.sbdev.co.uk/Hayabusa/Hayabusa_pistons_rods_valves.htm
Phil
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ChrisGamlin
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| posted on 29/6/06 at 11:11 AM |
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No probs, the other reason to keep it simple is because you get a shed load of high frequency vibration in any bike engine so you need to ensure that
anything you put in there is never going to fail. Just as an idea of what can happen, this is my standard blade baffle plate after about 2 years of
use, virtually destroyed by the vibrations and I was lucky that nothing broke off and block the pickup pipe and blow the engine. Jim Giblett also had
a similar failure with his R1 baffle plate and that did lead to an engine failure unfortunately.
 
Blade Baffle fatigue cracked
 
Blade Baffle fatigue cracked
You could imagine that the damage would be far worse if there was the additional weight of baffles etc hanging off it.
cheers
Chris
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Gripenland
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| posted on 29/6/06 at 12:26 PM |
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Phil- Yes I've seen the swivel pickup solution. It feels a bit to complicated though with moving parts and seals.
Chris- Interesting photos 
I'll be sure to polish my sump cover to help cracks from fatigue. I must also bere the vibrations in mind when designing the guideplates.
kokos-racing.com
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