Thread: Water ingestion R&D flat filter
06-24-2008, 03:35 AM #1
Water ingestion R&D flat filter
Guys we had another flooded ultra.
Ski had Riva perf air intake for a while without any problem even submerging the ski.
This weekend we tested the R&D flat filter and the ski flooded and ingested water.
Riding was not normal i must say ,the rider is an enduro rider with submerging habits...(offshore)
No damage was done to the engine.
Ski is alive and kickin now after 3 sets of plugs and the usual pain in the azz procedure.
I strongly discourage the combination unless riding straight and flat.
Someone mentioned about a custom water deflector which is a great idea.
I would love a pic if someone did it.
We had the cover of the Riva filter on.
Pic is just an example of my insane friends,i try to convince them they didnt purchase U-boats but jet-skis.(no luck so far)
06-24-2008, 05:04 AM #2
Basicly it was 2 bits of tin ( could be perspect if you like)
lower edge was approx 15mm wide than I bent it at 90 degrees from the deck , height approx 75mm .
they sit in front of the filter and basicly end up being positioned in an /\ shape in front of the filter,and extends down past the side of the filter area, so when water goes over the front and down the steering area it gets deflected around the fiter , doesnt stop every thing but does help dramaticly, at the end of the day if you submarine it all the time with the throttle on it will suck water from every external hole it can ,
supose you could put a deflector on the inside of the hull to direct the water towards the rear of the ski first.
but problem still remains if you sub it , it will fill with water !!
I didnt get any picks at the time I made it but intend to pull the top assy soon to do some more work, will take some pics then,
to cap off,
splash gaurd helps heaps but dont stop it all, ( jusy my findings anyway)
I am sure with more thaught it could be done much better.
I mean if the 2 deflectors were to be sealed to the front face of the glovebox water would be able to enter from the rear , so lessen the chance I guess.
06-24-2008, 05:10 AM #3
06-24-2008, 05:27 AM #4
Straight line will clear it i know.
Ski shut down while at periscope depth
I would love the pics of what u did.
06-24-2008, 05:56 AM #5
not that one wants to find out but has this happened on a STD ski with him riding it ,
As I would have thaught with that much water over the front , it still would have been sucked in the OEM vents ,
but I supose the difference is then, the water is directed away from the intake via the tubes , hence there reason for being fitted mmmm
it atill dows get somw water in my hull but no where as much as with out
I am hoping to look at the steering setup real soon so will get pic than
Sorry couldnt be more help
I still think a deflector on the inside of the hull would do similar effect as the tube , so when the water does come in it goes in the opposite direction as the air will being lighter, does that theory make sense??
06-24-2008, 06:31 AM #6
He had same ridestyle with stock and with Riva perf intake.
No problems at all.
Problems started with the R&D flat filter.
He kept the intake hoses,they are not cut off.
Tons of water coming in from the flat filter.
He is switching back to previous setup with just the Riva perf intake.
It wasnt a matter of hull water.
The riva is directly under the flat filter.
I am keeping the flat filter on my ski ,i ride mostly on surface
When possible send me a pic of what u did.
06-24-2008, 03:32 PM #7
was down oc,md couple weeks ago rough ocean water and hittin waves, my ski stalded twice and was blowing a lil white smoke after it did it the first time but went away quick and since bein home no problems but i have the exact set up and i can understand where your coming from
06-24-2008, 11:45 PM #8
This all takes me back to the question of whether the incremental advantage of increased air flow provided by flat filter is worth the risk of water ingestion? I'm starting to think maybe not if you ride in rough waters or like to do those submarine turns which can just be a kick.
06-25-2008, 12:01 AM #9
i'm thinking deflector in the hull might help with hot air from the engine a little as well.
06-25-2008, 03:07 AM #10
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