Dry Sump Engine - why have one?
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- čas přidán 7. 05. 2017
- In this video we look at some of the reason of why some bikes have dry sumps.
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![Dry Sumps, Wet Sumps AND Accusumps Explained | MounTune [TECH TALK]](/img/n.gif)
Love these videos. Makes it easier to understand with a visual representation. Dry sumps are also great for oil cooling if your bike doesn't have a set up to cool the oil separately
Very true - matt
Haha I have just been arguing in tiktok comments about dry sumps. The guy in the video reckons 35hp free gain from the crankshaft not churning through the oil. And all the commenters love it.
And the few that seem to know that the crank doesn't spin in the oil but say windage causes the losses can't explain how you could measure the difference on a Dyno.
Nice and short and very informative.. Enjoyed that.. :)
And I'm juat seeing this now. Love your channel!
Its been an education for me, never knew Ducatis had dry sumps
Not all of them do, but when people think of dry sumps they usually think ducati
I didn't even know ducati did that haha. I know some sports cars use dry sump systems. Along with Yamaha/arctic cat 4 stroke snowmobiles. The engines used in their snowmobiles were taken from sports bikes I believe and modified for winter use and fitted with a dry sump system.
When i think drysump. I think race car.
that is really trick, never knew that before about Ducati design. Cheers.
Fucking brilliant. I finally understand how my KTM's oil system works and why it's such a pain to change the oil compared to the Kawasaki. You should do a thing on the 990 SMT sometime and the things KTM did to lower the centre of mass. Even the tanks are split and go very low on the side to lower that CoM.
The company I used to work for owner had two KTMs. One X-Bow and the GT version. We used to kid him that KTM stood for Kraut Transportation Machine. He's German by the way.
Awesome! Keep it up!
Cheers dude - matt
One learns something every day
Can you also explain what a semi-dry sump is?
i have another question: do you think that rotating a v-twin engine (like HD's or Virago's) between 3° to 7° due to lifting the tail of the motorbike (say by replacing a dual shock system for a monoshock) will affect on a negative way? im not sure if the impact will be little or not, since considering the G forces (other than the BAR concept on itself) is an issue that you didnt addressed directly on the fluid dynamics series. thanks in advance and sorry for the troubles.
What model of ducati uses this sys? But I have heard they use thisbsystem on WSBK and MOTOGP
All of their v engines
This was a good video , is this the same as MXbikes have?
Ive always been so confused with oilsystems
Which bikes the 2 or 4 strokes?
4T of course Like the name says i currently run KX450f 2014
lol sorry - didn't really notice - too many comments - yes it does!
Like all Harleys.
sorry to bother matt, but i cant understand why honda used dry sumps on the bigger XR models, like xr500, 600, 650 and i think 400 too, having the oil reservoir inside the frame. what could possibly explain this on a single cylinder offroad bike? thanks and sorry to bother
You don't want anything on the engine to be vulnerable to accidental damage and a wet sump is a vulnerable component as well as adding height to the unit. Many off-road singles have used dry sumps and I had a XT500 Yamaha that was dry sump as well. In the past, Ducati had some good looking wet sump singles but they were one of the only ones and the main interest the factory had was in road racing at the time. I also had an early XR250 Honda with a wet sump, not too bad a thing on a small single but not the best choice for a large one.
I have a 1982 xl250r with a wet sump and a 1996 xr250r with a dry sump and oil in frame. The wet sump adds a huge load of metal to the bottom of the engine. And has less ground clearance.
Less oil in an engine = Sexy shit
i understand the logic of the oil path during acceleration but what about deceleration,
Unless youre revving the shit out of it in neutral and slamming the brakes from high speed, it shouldnt be a problem. The oil pump should be powerful enough to keep things lubricated at all times anyway. I imagine there would simply be more oil in the engine and less in the reservoir simply because the deceleration is keeping the oil from reaching the scavenging pump.
Is the thumbnail a Rotax 650?
my dirt bike uses a dry sump. Pain in the ass to get a correct reading when checking the oil level.
i know a good video, what happens if you have to much oil in your engine? happened to a friends guy who has a kawazaki drz 400. it has a dry sump to, he managed to put a tad to much oil in it
ATTL
Hey man , im a Fan of your Channel but i have to disagree with the dry sump ducatis. all ducatis use a wet sump system, with only one pump exept the v4 wich has 4 pumps in a wet sump. im guessing that maybe the motogp engines use dry sump, but thats only a guess with no proof. anyrod😀 keep up the good work
Harley-Davidson use dry sump.
They did not always have a dry sump system! I cant remember it on the 907ie I used to have and none on the 1993 900ss... that has to be invented with the 4 valve system.
onhawaii -The only dry sump Ducati I can think of is the Desmosedici racer. Even then when they sold a few road legal replicas they were wet sump engines.
I'm sure that my old Honda CB 750 four k7 model has a dry sump
well I live and learn. None of my Ducatis, wether belt or bevel, were dry sump.
not a ducatis have a dry sump, but it is becoming more common and when talking about dry sumps most people have encountered them with the Ducats
The Workshop Are you sure you're not talking about dry clutches? There are plenty of Ducatis with dry clutches but I can't think of any with a dry sump.
tomos polyester gp bike frames!!!
Sorry I was looking for an explanation in English :)
totall bull shit dry sumps r yes to lower c of gravity and to stop oil presser loss in hi g forces maneuvers i wood say on that bike at 10% angel its to stop the piston slamming into the oil whitch wood b bad coss ass you accelerate whear is all the oil gowning to go ?????
"piston slamming into the oil whitch wood b bad"
Let me translate that for you
"piston would slam into the oil, no wait, the crankshaft is in the way, no wait, what?
so your telling me the crankshaft is in the way, stops the oil from moving back towards the piston even in a oil filed sump even tho in a oil filed sum it wood b bad fore the crankshaft to hit the oil you need to stop smoking the weed ore whatever t is your smoking