Bart Vangampelaere
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| posted on 28/6/05 at 09:13 PM |
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quote:
Originally posted by stevebubs
quote:
Originally posted by Bart Vangampelaere
http://www.mcnews.com.au/NewBikeCatalogue/2001/Suzuki/GSXRimages/6_donk_600p.jpg
just have a look... oil is kept in the housings, not in a seperate sump as in a car engine.
Not meaning to be rude, but what's the sump-like plate at the bottom of the engine? A typical car engine has the sump integral to the engine,
too.
[Edited on 28/6/05 by stevebubs]
The plate under the engine can hardly be called a sump. It's not there to contain the oil, merely to cover the hole, yet be able to remove it
for inspections. A sump on a car is ONLY there for holding oil, it doesn't have any other purpose. But if you'd replace it by a flat piece
of steel, you're in problems. Replace that bike-engine cover by a flat piece and you wouldn't notice (if clearance allows, of course)
Actually the plate is under the (integral cast) gearbox anyway.
But you're right about the the fact that because most BEC having the engine in the "wrong" direction in comparison with the original
bike.
Nevertheless drysumping can end surge here too, it just won't help to mount the engine any lower.
Oh, and about car engines having integral sumps too: sorry, I just remembered I haven't looked at a normal piston engine for let's say 10
years. That's what happens when you are into rotary engines: sooner or later you forget piston engines exist 
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stevebubs
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| posted on 28/6/05 at 09:18 PM |
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quote:
Originally posted by Bart Vangampelaere
quote:
Originally posted by stevebubs
quote:
Originally posted by Bart Vangampelaere
http://www.mcnews.com.au/NewBikeCatalogue/2001/Suzuki/GSXRimages/6_donk_600p.jpg
just have a look... oil is kept in the housings, not in a seperate sump as in a car engine.
Not meaning to be rude, but what's the sump-like plate at the bottom of the engine? A typical car engine has the sump integral to the engine,
too.
[Edited on 28/6/05 by stevebubs]
The plate under the engine can hardly be called a sump. It's not there to contain the oil, merely to cover the hole, yet be able to remove it
for inspections. A sump on a car is ONLY there for holding oil, it doesn't have any other purpose. But if you'd replace it by a flat piece
of steel, you're in problems. Replace that bike-engine cover by a flat piece and you wouldn't notice (if clearance allows, of course)
Actually the plate is under the (integral cast) gearbox anyway.
But you're right about the the fact that because most BEC having the engine in the "wrong" direction in comparison with the original
bike.
Nevertheless drysumping can end surge here too, it just won't help to mount the engine any lower.
Oh, and about car engines having integral sumps too: sorry, I just remembered I haven't looked at a normal piston engine for let's say 10
years. That's what happens when you are into rotary engines: sooner or later you forget piston engines exist
I quite agree that dry sumping won't normally help you mount a Bike Engine any lower. Once running, there's not a lot of oil held in the
bottom of the engine at all - it's normally sucked back up in double quick time due to fancy bike-driven design.
PS Most Porkers are dry sumped, too
[Edited on 28/6/05 by stevebubs]
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madman280
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| posted on 28/6/05 at 11:15 PM |
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With regards to oil level in a bike engine, it should be remembered that the many use a wet clutch. It's imersed in and cooled by the oil. So,
low oil level would mean a toasted or inoperable clutch. Not all bike engines have wet clutches, just the majority. It needs to be taken in to
consideration when modifying the oiling system. I may be wrong in my thinking, but I do know what happens to the clutch if the oil level is low,
before the engine self disassmbles.
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Bart Vangampelaere
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| posted on 29/6/05 at 09:34 AM |
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quote:
Originally posted by madman280
With regards to oil level in a bike engine, it should be remembered that the many use a wet clutch. It's imersed in and cooled by the oil. So,
low oil level would mean a toasted or inoperable clutch. Not all bike engines have wet clutches, just the majority. It needs to be taken in to
consideration when modifying the oiling system. I may be wrong in my thinking, but I do know what happens to the clutch if the oil level is low,
before the engine self disassmbles.
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Bart Vangampelaere
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| posted on 29/6/05 at 09:37 AM |
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eh seems my post didn't get through???
Anyway, I wanted to say I agree. Most bike engines use wet clutches. If you'd dry sup these, the clutch might run dry.
But I'm not so sure it's needed anyway.
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gazza285
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| posted on 29/6/05 at 11:22 AM |
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http://www.allensperformance.co.uk/dry-sump-kit-suzuki-hayabusa.htm
Quote:
"enables engines to be fitted 75mm lower in the chassis. Stops oil surge and improves reliability."
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Hellfire
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| posted on 29/6/05 at 11:45 AM |
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The total cost of installing a dry sump is almost - if not more than - the cost of majority of motorcycle engines. If a wet sump on a motorbike can
cope with wheelies and heavy braking, then I'm sure there can't be a great deal of difference between that and cornering hard in a BEC. To
my mind, installing a baffle plate to prevent excessive oil surge should be sufficient. I guess only time will tell................ 
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