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Oil tank position |
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IanG
Premium Member Joined: 04 Oct 2010 Location: N Wales Status: Offline Points: 10725 |
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Posted: 06 May 2017 at 12:28 |
AS I recall from that build he was on asking questions every now and again about how best to do things
So yes,like a few things on that very well built bike it was a compromise just to get everything in I saw that bike at the NEC show and tbh it didn't seem quite so nice in the flesh,somehow it looks so genuine but when close up the proportions are just a bit out which takes some of gloss off. Superb build though,very well engineered,it's just that a quart in a pint pot is always going to be a problem |
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www.apworkshops.co.uk
www.apriliaforum.co.uk www.apriliaownersclub.co.uk Looking forward to the next track day |
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davidrsurfer
Premium Member Joined: 22 Feb 2011 Location: North Devon Status: Offline Points: 2511 |
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I suspect position of the oil tank is more to do with packaging than any technical reason.
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Motorcycle friendly self catering holiday apartment Acorn Studio. See us at Air bnb.
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Af1
Moto GP Alien Joined: 29 Dec 2016 Location: Herts Status: Offline Points: 651 |
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The ally frame on the aprilia's is lovely. The engine is the horrible die cast aluminium that the japs made their engines out of... The japs added zinc to the aluminium to make stronger and more consistent casting. The downside is the aluminium and the zinc react to moisture and other things like salt. That's why most new bikes have painted engine casings. Everyone seems to have gone down the added zinc for casting. K Ps lovely gold star btw |
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redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
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Check out this build ... he has an under engine oil tank
http://www.taimoshancycleworks.com/bikes/super-cafe-racer/ |
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www.apriliaperformance.co.uk www.apriliaforum.co.uk www.apriliaownersclub.co.uk |
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redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
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You can't say the rotax v990 Is a beuatiful engine that's why they covered it in crap ha ha
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www.apriliaperformance.co.uk www.apriliaforum.co.uk www.apriliaownersclub.co.uk |
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Andy Higham
Premium Member Joined: 21 Feb 2017 Location: bolton Status: Offline Points: 167 |
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redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
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woo hoo special builds love it love love it
unfortunately my bike is a mile from my house in a lock-up with no power etc etc ..I rarely get up there...lazy old man syndrome finally got up the garage this week for half a day or so sorted the rear suspension linkage on the falco, rear tyres on both the mille and falco the mille now needs clutch bleeding or new line ,radial m/c and another slave which I have got before MOT ready for TT att eh end of the month Falco will probably be bolted back together MOT'd and sold to raise funds and at last the knobblies for the project falco at last have been mounted on the rims. 180 width knobblie woo hoo ha ha being that I don't get up there much and the project needs an engine swap its going to be a long project so a couple weeks a go a mate delivered 20 sheets of ply and osb enough to take down the shed and playhouse at home and build something so I can work on bikes at home project man-cave starts after I come back from TT although she is probably wanting project living room/bedroom/kitchen to start instead |
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Diablo
Premium Member Joined: 29 Sep 2010 Location: Upwell Status: Offline Points: 3126 |
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Ha ha, I know what you're up to Phil
I'll help you if you need. I have a similar plan, but not going to be able to start it for a year or so. We're due a meet up, can discuss then. Ive been laid up with my back again and got a bit down about it. I've had a word with myself and will bounce back like I always do |
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Question everything.
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Fugly
Moto GP Alien Joined: 18 Nov 2015 Location: Cambridgeshire Status: Offline Points: 754 |
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To early to announce yet as lots of research still to do, plus am just starting a fairly major fabrication project which has priority over a 37 year old pipe dream.
But the itch is strong and I fancy a having a scratch at it.
Will let you know when / if I get the ball rolling |
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Full Arrows system, 1060 Big Bore, PC5 and Evo Airbox. Bring on the big grin!
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redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
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Fugly
Moto GP Alien Joined: 18 Nov 2015 Location: Cambridgeshire Status: Offline Points: 754 |
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OK thanks for that.
Mmmmm doesn't kill the idea. Just need ot get my current project finished and will then be on the lookout for a cheap RSV
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Full Arrows system, 1060 Big Bore, PC5 and Evo Airbox. Bring on the big grin!
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redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
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schematic oil flow
1) Camshafts 2) Cam Chain Tensioner 3) Upper Balance Shaft 5) Piston Cooler Nozzle 6) Lower Balance Shaft 7) Oil Tank 8) Oil Cooler 9) Oil Filter 10) Oil Pressure Relief Valve 11) Clutch Shaft 12) Crankshaft 13) Oil Pressure Switch and a another |
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Spoonz
Admins Group Joined: 11 Feb 2008 Location: North Devon Status: Offline Points: 10726 |
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The aim is to have the feed lines as short as poss and that has more to do with it's location than pure height I would think. I suspect having it too low is worse than too high. Depsite being called a dry sump, some oil remains in the motor. If it didn't the engine would be dry at startup. If you had the tank lower than the engine, then gravity would drain 100% of the oil back into the tank. The longer the lines, the more pressure loss as it's further from the pump and the colder the oil gets especially on the return after it's been through the cooler.
The pressure on the return side is quite low anyway so in an extreme case location wise if you had long lines and colder oil etc maybe you could get problems with enough return to the tank to meet the supply side. |
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redratbike
Moderator Group The Collector Messiah Joined: 07 May 2008 Status: Offline Points: 16146 |
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I have a diagram of the oil flow somewhere hold tight
but this may explain it for you Dry-sump oiling system explanation A simple explanation of how a dry-sump oiling system works in the RSV1000 Mille, SL1000 Falco, RST1000 Futura, and Pegaso 650. This oiling system can also be found on all types of race cars (F1, Indy, circle-track, even NASCAR). This dry-sump oiling system frees up lost horsepower and prevents oil starvation problems associated with long wheelies and high G-forces. Aprilia is the only one to use this dry-sump oiling system in all of their 4-stroke motorcycles. I strongly feel that other manufacturers should also use this system. The basic dry-sump oiling system consists of two oil pumps, an oil filter, and an oil tank. We'll start at the oil tank, since most of you know where that is located. The oil tank always contains a minimum level of oil. The oil is drawn down the bottom hose to the first oil pump called the pressure oil pump. The pressure oil pump pushes the oil through the oil filter, and then to all major lubrication points (bearings, crankshafts, cams, transmission gears, etc.) thru oiling passages just like in all other engines. This pressure pump is analogous to the single oil pump in a wet-sump engine. Oil splashes off the moving parts and drains to the bottom of the crankcase. Here, is the main difference between dry-sump and wet-sump. In a typical wet-sump engine, the crankcase (oil pan) is very deep and full of oil. The crankshaft partly spins through this oil causing a HP loss. The single oil pump in a wet-sump engine has its pickup in the oil pan. Under certain conditions (high G-forces, long wheelies, stoppies, etc.), this oil pickup can be sucking in air and not oil. This will starve all the moving parts for oil. NOT GOOD!!! In a dry-sump Aprilia engine, the oil does not sit in the pan, hence the bottom of the crankcase is "dry" and very compact. A second oil pump, called the recovery or suction oil pump, returns this oil back to the oil tank through a hose. This hose connects to the top of the oil tank. With a dry-sump system the "oil pan" is effectively moved to the side of the engine (now called the oil tank). Remember, because the oil tank always has oil to feed the pressure pump, the pressure pump will not run out of oil. No oil starvation problems!!! This system allows the engineers to make a more powerful and compact engine, and provide adequate lubrication under all conditions (high G-forces, long wheelies, stoppies, etc.). It frees up lost horsepower by not spinning the crankshaft through several inches of oil. |
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Fugly
Moto GP Alien Joined: 18 Nov 2015 Location: Cambridgeshire Status: Offline Points: 754 |
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Hi all,
I have a (bizarre) question for those of a mechanical persuasion. Is there a reason for the position of the oil tank on the 990's? What I mean is, if it were higher would the oil drain through gravity into the engine causing start up issues or does the pump hold the level in the engine? |
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Full Arrows system, 1060 Big Bore, PC5 and Evo Airbox. Bring on the big grin!
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