venting

[spunkyone]

I jumped my rotor lube lines around to each other meaning i put push locks on each eand of motor and used three eights tubing but what i also did was rebuild the motor and when i replaced the bearings and seal in rotor cavity i pumped grease onto the worm gear and opushed some into the bearings DO I still have to vent this even thou grease is in????:biggrinjester:

 

[Nate Surveyor]

I have never heard of simply pumping grease to the rotary gear... Most folks leave the oil lines intact for lubrication of the rotary gear.

I am curious as to how some of the more experienced persons on this forum reply. (Maybe you are outside the box, with a good idea!)

(Now, I am sort of joining in with you) So, here goes:

Did you leave the two hoses hooked up, and rig it so you could PUMP grease to it with a grease gun, and install a zerk in the end of one of those hoses? So you could grease it daily? This might be a good idea.... Then if somebody has a leaking rotary seal, simply disconnect the oil lines (No more oil leaking into the engine) and put a grease fitting on one line, leave the other for venting the used grease, and remove the oil pump, install a blocking plate over the hole, Pre mix and RIDE.

Ah, I hope this is a good idea!

Lets see what others say!

Nate

PS, I re read your post, and see that I read it wrong.

You did put grease in the gear, but you bypassed the tank, and simply have the IN and OUT side hooked together. Maybe you were using the term "grease" loosely, and mean oil.


Now, with that arrangement, what if your rotary seal leaks JUST A LITTLE, then could you run out of oil down there? (assuming you meant oil, not real grease). And, this little loop is NOT vented, and that is your question. Ya, I say it needs some sort of vent. maybe just install a T fitting, and run a hose up higher, out of the way, to vent it. If you don't vent it, it could make your rotary seals start leaking, as it searches for a way to VENT itself. What is going to make it "Breathe" is the change in temperatures down there. So, yeah, it needs vented, or it will make it's own vent, and that would not be in you best interest, if it chose the rotary seals...

HM

I wait and see too!

 

[seadoosnipe]

Grease?.......

Like you Nate, I have never heard of this being done. If this was possible, I think Seadoo engineers would have already thought of this as a better way of maintaining the rotary worm gear.

In my opinion, I don't think this is going to give you the protection you need for the rotary. The reason and concerns I have are for the amount of RPM generated by the crankshaft. Your looking at 7k rpm at this gear and I think the grease would make a hole while it was spinning, providing little or no actual protection from heat and friction.

I can't say for certain that it will work. But I can say, if it did, I think Seadoo Research and Devolpment engineers would have already thought of it because it would be more feasible.:cheers:

 

[Nate Surveyor]

Well, it has gotten me to thinking.... maybe the oil tank is a bit high... if the rotary seals are leaking, then lowering the tank, so that the static pressure is less, it could leak less, and thus reduce the quantity of leak, in the rotary seal....

Probably would not help, but you know, the mind does wander!


N

 

[spunkyone]

vent

ya nate , snipe the engineers never thought we would change the way they designed it to be :cheers:but as of all things engineers ways hve always been changed it modified they never thought of it ok grease yes like i was saying i took the seals that are on the bearings the inner ones only because they would never get much oil in them that and packed them with grease the camber is not totally full of grease because of expansion i also put small amout of lucas gear oil that is famous for creaping over gears . Nate thanks for agreeing on venting it :agree:I just needed some reasurance on my idea I am a maintenance mech. for over fourteen years so im allways thing and thank you snipe for your help during this project:grouphug::lurk::seeya:

 

[spunkyone]

vent

oh and thanks nate:cheers:

 

[seadoosnipe]

Engineers....?

I agree with you as for the way engineers designs can be found either insufficient or room for change. I've been an engineer myself for some 30 years. From my perspective, with the age of the motor, if this procedure would have been feasible, a revision would have been listed years ago. I would think this concept was thought of before.

If you look at the design of the worm gear, it's in the upper cavity of the chamber. It seems that if you fill this area with grease, it will settle in the lower extremities of the sump providing little grease to the rotary gear. As for grease expanding, it really doesn't. Oil expands with heat, grease remains pretty much the same state, little or no expansion.

The oil in your pre-mix will lubricate the rotary plate and bushing but not the inner gears.

I hope I'm wrong and only time will tell but I don't think this is a sound idea.

 

[Nate Surveyor]

O please! I did not say that I agreed with the whole idea... I am somewhat of a novice, and not at all willing to go on record as anything but an armchair general, on this subject! (It is not my ski, and they are so expensive to fix...) So, I was speculating, and having fun doing it!


But that I was trying to build on the concept, and that IF VIABLE, it could really be a help for some. I have a Sawmill. It has a gearbox. It is a swingmill. It is a Peterson. (WWW.petersonsawmills.com) There is a mill from Canada, that has the same basic design, (swingmill), but it's gear box uses GREASE! (Mine has synthetic oil) the Grease they selected is an interesting kind... it has cushioning built into it! The Mill in Canada can be found here: http://www.doublecut.com/

Anyway, they are doing kind of the impossible too... I think they resorted to grease so theirs could swing 180°. (Not for sure on that)

Anyway, I am curious as to how your experiment turns out! How many hrs you get on it, and if/and or when if fails. In either case, if you have found a way to extend the life of an engine with a leaking rotary seal, by 1,2, or more seasons, then it is certainly worth looking in to.

I still think you should consider place a zerk on one hose, (maybe the IN line) and vent the OUT one, so you can grease it daily. This could potentially replace grease, that works it's way out. Even if it is a closed system, with a T and a zerk on the 3rd leg of the T.

I am trying to place ideas on the table, but by no means am I paying for or responsible for my own ideas, hence the caveat!


And, I think it is great to see others OUTSIDE the box.

Trying to warn you (in the name of integrity, and honesty about me!)

Nate

PS, let the blind lead the blind, and they both fall into the ditch! (sometimes that is a good place to be, if a big truck is coming though!).

I hope you are not offended at me, for this, but trying to communicate honestly, and place what I say in the right category in your mind!
Nate

 

[seadoosnipe]

More time?

I agree Nate. If your engine is going to be in need of replacing those seals on the crank, you've got nothing to lose and everything to gain in doing this. Except the usable core in trade in. But, if you can get several more seasons, then wow.....what an idea.

Question? Maybe they have the oil in the chamber because it's compatible to burn with our fuel. What would combustion be like if the grease was introduced to it through some leaking out from the rotary chamber into the pistons....?

 

[spunkyone]

thanks guys but dont forget there is a little bit of lucas gear oil added oil stabilizer is what its called it climbs on gears You might remember the disply at your local autozone where when you crank the handle you can see the oil climb upward onto the gears thanks for listening:grouphug:

 

[sporsterjoel]

thanks guys but dont forget there is a little bit of lucas gear oil added oil stabilizer is what its called it climbs on gears You might remember the disply at your local autozone where when you crank the handle you can see the oil climb upward onto the gears thanks for listening:grouphug:

lucas gear oil mixed with grease, are they compatible with eack other? try and re creat that store display and mix up the ratio your going to use and see how well it work.

 

[spunkyone]

grease

HI GUYS REMEMBER THAT THE BEARINGS ARE PACKED THEY ARE SMALL 6203 FRONT 6201 REAR SMALL AND A SGUIRT ON THE WORM GEAR THE LUCAS OIL IS LIKE HONEY INTILL WARM AND FLOWS NICE THE TO MIXED IS NO CHANGE THE CLEAR PLASTIC HOSE THAT I HAVE JUMPED AROUND ACTS THE SAME AS A SITE LEVEL GAUGE YOU CAN SEE THE COLOR CHANGE WHEN STILL I AM SURE WITH TOSSING BACK AND FORTH ON THE WATER IT WILL GET A CHANCE TO GRAB ON TO SOMETHING AT ALL TIMES :cheers:

 

[seadoosnipe]

Cool........

Cool.........I think you should give it a try. You can be the test pilot. You've mixed oil and grease. Curious as to what the outcome will be. If it works, then maybe you can post in the forum for those who want to premix and dump the oil tank.

I know there was one member, a year or so ago, that bought a boat that had the rotary capped, tank removed. Her gear seized. We couldn't get a lot of info from her as to whether it was filled with oil before it was capped, etc...So, it will be interesting to see what you find out.

Good luck........oh, and please don't use all caps in the forum, unless your using it as exclaimation of a particular part of your sentence.........:cheers:

 

[spunkyone]

thanks seadoosnipe like said in my world of gear boxs and industrial machinery im going thru with this lucas is good oil and soforth right now she is sitting in the house the motor that is because i dont want to worry gets cold here buddy .I did almost everything possible to this project thanks to U and the forum it was a basket case. I have changed all lines filters new motor and did it myself except for machine work meaning the boreing is there anything else to do ?? :hurray::rofl:

 

[seadoosnipe]

Lucas oil....

I know about the Lucas oil but have never used it. Come spring time, when you take her out, make sure you post your results so we can all decide if it's worth it for us to try.

I would probably suggest some kind of daily inspection so that you could see a problem before it became catastrophic..............:cheers: