ok on the new kawie 650 it has a wet disk in the rear. the way i understand it, it is several disk's that are sealed in a drum and the drum is filled with oil. i understand that it would last a long time because its sealed. i dont see how it would be better at stoping. wouldent the oil in the drum provide lubrication and require longer stops. i know they put these brakes on tractors but tractors go slow so breaks arnt a huge issue.

if the wet disk brake is so superior why dont they put them on cars and trucks?

later
jon

 

The wet disc brake is a good idea . They are quite durable . On a tractor the brakes are used as much for steering as stopping . They are quite effective and very durable .

I wonder if any manufacturers will use the old time *oil only * filtering systems some tractors use ? They use oil (a quart or so ) in a container . Air is bubbled through oil by the vacuum of the engine . (picture blowing in a soda staw in your drink your exhale would be dirty air going in the bubbles would be clean air to the motor ) That's right , no filter element what so ever. You just replace the oil and clean the container , they are very effective . I may have to make shift one and put it on a flow bench in my spare time , I don't know how free flowing they would be , but I do know they really filter well .

Know where the the supertrapp style discs came from originally ? They were designed for steam engines , no kidding .

 

Rick,

Older Land Rovers use oir air-filters (mine included ), and you can use any oil, including used oil. No dust can go through the oil. But I think they don't flow very well... (The 2.25 diesel doesn't need that much air, compared to a turbo diesel).

Pedro

 

I suspect you are correct about the flow .

 

Rick,

You probably could make a filter with enough flow for a high rpm gas engine, but I think the size of the resulting oil air filter would be impractical, and you also have to take into account the height the filter would need to have on an ATV, so it would still work and not spill the oil...

Pedro

 

wouldent the oil in the brake drum create lubrication and make for longer stops. isnt it the same idea as driving your car in water then pressing on your breaks. the water creates lubrication and u take longer to stop.

 

I ahve no real plans of making one to really use , but , still this makes interesting discussion .
A polaris 500 turns about 6000 RPMs . A 4 cylinder gasoline tractor with identical bore and stroke to a 500 Polaris would turn around 2500 RPMs . The airflow of our *imaginary * 4 cylinder engine would be the same as our 500 polaris running at 10,000 rpms (almost double ).
The oil filter would be practical on our *imaginary * 4 cylinder tractor engine .

I have seen a tractor back fire and send oil out the intake , I doubt folks would care for that kind of spew underneath the seat .

Hmmm , I wonder , would it be practical ?

 

Well , no , not really . The wet brake is similar a typical clutch found in most motorcycles . They work .

I haven't seen a new Kawasaki brake , but if it is like a tractor , it is several discs , like a clutch .

 

so it works like a clutch only in reverse right?the plates would held open until you hit the breaks then it would compress .

 

If you are serious about this, go to a salvage yard that deals in tractors. We have an IH 350 that has the 'oil bath' filter in it. Any of the 00 or 50 series internationals should have it (300, 350, 400, 450, etc.) Part of what makes them work is a kind of steel wool inside the air cleaner body that helps suspend the oil & let the air flow through it better. It is very effective, and simple. You can actually use the old engine oil in it when it is time to service it. They no longer use it in tractors for a couple reasons. It is very messy dealing with dirty oil & the muddy sludge that collects in it. I think it is simpler & faster to just change a paper element. And lastly (I saw this demonstrated in school) if you overfill the reservoir on a diesel engine, oil will be sucked in, sometimes atomized enough to ignite, causing the engine to over-rev with no way to stop it.
If you are truly serious about wanting one to experiment with in the shop & can't find one, we have a tractor salvage yard nearby I go to occasionally & am sure I can find one for $5 - $15 or so for the complete unit.

I think they would be impractical on an atv because of weight (our tractor takes about 2 quarts of oil in the filter) mess, and oops factor. You know, oops, I tipped it over, now my air filter doesn't work.
Farmr