Which one rc boat ESC can use in out runner motor ?

[Shun Tung]

Very good job ! Thanks you tech me how to make waterproof in electric system . Another things is I saw your you tube . You telling us just direct spray in the ESC inside and edge and then let it dry is OK ! How about Servo and
Reciever . Is it same case do that ?
Thanks !!

[tlandauer]

Gentleman from IA is right on the money. Corrosion-X is a high quality water repellent product, used in aerospace as well as marine applications and not to mention industrial in general.
My take, and I emphasize it is my take that one needs to re-spray the item if said item has water encounter. Unlike epoxy or plastic-dip coating which is more of a permanent nature. I have three tunnels with outboard motors and I re-spray them after every run, regardless if the motors were submerged or not. Corrosion-X is like an oil, it will get washed away after repeated water immersion although it has superior penetrating and bonding ability.
As for the servo, one needs to take the case apart (upper and lower) and spray liberally with Corrosion-X on all the parts to achieve water resistant quality. Just taking the upper part out is not enough and different servo has different casing, I am not an expert on servo but I have taken them apart after water immersion and without the water repellent chemical water "sticks" to all the little gears and it takes days for the H2O to evaporate! I have seen people only seal the halves of the servo cases and it is not enough, one must spray inside first and then look for ways to seal the gaps between the casing.

[Billy Barnacle]

Tim,
It's not just your take, AQ says to do the same thing on page 8 of the SVR manual... http://manuals.hobbico.com/aqu/aqub23-manual.pdf - I do that to my PB marine motors when I get home or next day - FWIW I use CRC 6-56... http://www.crcindustries.com/auto/?s=06007

Regarding the servo, as you know most Trax servo's are waterproof, rubber o-ring / gasket type deal. I replaced that purple servo in my boat with a Trax 2080 waterproof digital micro servo.

The gears are plastic (Delrin - self lubricating - check Wikipedia) not metal, you still think there's a need to remove the base & shoot a small amount of oil (CRC or Corro-x) in there?? My concern is that some types / brands of oils become gummy after a while, creating more of a prob than what one started out to solve in the first place.

I cut the radio box out of my boat cause it became a major PIA, that's why I am so interested in learning from this thread and going out of my way to stay civil.

Regards,

Gentleman from IA is right on the money. Corrosion-X is a high quality water repellent product, used in aerospace as well as marine applications and not to mention industrial in general.

My take, and I emphasize it is my take that one needs to re-spray the item if said item has water encounter. Unlike epoxy or plastic-dip coating which is more of a permanent nature. I have three tunnels with outboard motors and I re-spray them after every run, regardless if the motors were submerged or not. Corrosion-X is like an oil, it will get washed away after repeated water immersion although it has superior penetrating and bonding ability.

As for the servo, one needs to take the case apart (upper and lower) and spray liberally with Corrosion-X on all the parts to achieve water resistant quality. Just taking the upper part out is not enough and different servo has different casing, I am not an expert on servo but I have taken them apart after water immersion and without the water repellent chemical water "sticks" to all the little gears and it takes days for the H2O to evaporate! I have seen people only seal the halves of the servo cases and it is not enough, one must spray inside first and then look for ways to seal the gaps between the casing.

[tlandauer]

I use Futaba Servo, perhaps it would have been helpful if I had been more precise with my general statement. Wasn't thinking any of the current crop of so-called water proof servos.
Thanks for pointing it out.

[Southwest]

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[Billy Barnacle]

Funny you should mention lithium grease

That's a great idea, specially in a metal gear servo

I've been using Labelle oils & 106 grease with PTFE for years... http://www.con-cor.com/Labelle.html - top of the line stuff. Might wanna try some 106 next time you service one of your servo's and see what you think.

FWIW: PTFE has been called "the slickest substance known to man" is the parent chemical of "Teflon" which is registered trademark of Dupont Chemicals.

...When the rudder gets jumpy or jiggers, time to replace the servo...
Yepper, that's why I replaced it Figured if I'm gonna replace it, might as well do it right. Boat came with a micro so the mount only needed minor mods.

Not sure what you consider a "big boat", think that's kinda one of those depends on what your used to type deals. First time I looked at my IM31 I was like... holy crap look at the size of that. People with 4 / 5-ft boats would probably say somethin like... get the F outta here with that overgrown toy boat

My other two boats are only 26"


Tim,
You sayin you coat your {boat} servo's with conformal coating (liquid tape) even if they're so called "waterproof"??

This is my take on servos. I went to metal gears in servos if they are in big boats on the torque side. I fill with white lithium and fill the arm full of grease to keep water out as much as possible. Next I put sealant on the seams and where bolts enter the body . When the rudder gets jumpy or jiggers, time to replace the servo. Those plastic gears are very expensive and don't look twice in replacing them.

[tlandauer]

Tim,
You sayin you coat your {boat} servo's with conformal coating (liquid tape) even if they're so called "waterproof"??


No, I have not done that. I have only two boats that use the Traxxas servo and neither one has seen water inside, can't vouch how good the Traxxas servo is. You can see the sealing between the upper and lower cases and I think it is resistant to water intrusion. If you look at this one,http://www3.towerhobbies.com/cgi-bin...?&I=LXBJCE&P=7 you will realize the HiTec is of higher quality than the Traxxas, I am not bashing Traxxas, but they both have pros and cons. The Hitec is just ever so slightly bigger than the average servo and I wasted my money because it will not fit the servo mount , and since it is a HV version, I have heard stories that there are issues with certain brands of Rx. The Traxxas is half the price, but it does not come with any servo horns and worse yet, it does not even give you a servo post screw!! You need to find a screw that fits and I have no luck so I jam whatever I find, luckily it is a nylon post, you can force your way thru.
Therefore I use Futaba S3305 MG (metal gear), at $29 a piece, like the Gentleman from IA said, when it starts to glitch, I will replace it, so far I have not. These servos would benefit from some treatment inside whether it is lithium grease or Corrosion-X. And yes, it will be good to seal the outside.
The servo I mentioned much earlier was a cheap Proboat servo and was in my FasTech boat that sunk half way for 30 minutes with the Seaking 180 ESC,
I took the servo out ( opened the case of course) and purposely observed how long it will take for all the water to evaporate, and it took a few days. I could have used a blower to dry it out, but I didn't, it was an experiment. That servo should have been sprayed with Corrosion-X but I was not knowledgeable enough at that time to use this product, and did not really work well afterwards---replaced with a Futaba.

Note to OP,
I am truly sorry for leaving the original topic, I think I have just exhausted my take(s) on the servo.
back to the topic!

[Southwest]

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[er8sr]

Great. Discussion , So is it better to pull shrink off esc and spray it with liquid tape or Corosion X?

[lenny]

All the Op info is in post #1 and #4 if you looked for it.

I'm like the Gentleman from CA., for butting in, but if it helps boaters in questionable areas, it matters. I'm no genius, but have been there done that. Now if things didn't work out correctly, I wouldn't have given advise on the subject. Advise on escs needs motor size, how big is boat, usage for boat like sport or racing, budget to stay in the ball park. Also, how much knowledge the asker has , so advise can be given. My winter project is to see if C-X works on escs in cheaper models. Also put in ventilation piping to exit for fumes. No need to reply, ok!

[er8sr]

Rustoleum Never wet is pretty amazing stuff