Waterproof servo

by Leong02 Tue 20 Sep 2011 - 18:54

Any idea to do so?

Found water inside the servo, my steering wheel go hairwire on the last trail. Crying or Very sad

by RTECH Tue 20 Sep 2011 - 19:29

Leong02 wrote:Any idea to do so?

Found water inside the servo, my steering wheel go hairwire on the last trail.

The trail trucks you saw that can go into the water , most of them have done waterproofing.
Normal servo are not waterproof, otherwise state so.
Since you have strip the servo, you should see a small electronic circuit board and a motor inside it.
You can use neutral cure silicone to cover up the board. As for the front servo gearbox, try to stuff grease inside. And put a O ring in between the servo horn and the servo gear head.

by boolean21 Tue 20 Sep 2011 - 20:58

Silicone the pcb would be best, but if lazy like me, just silicone the joints / seams of the servo..and grease the output shaft...

Hmm, oh ya... you in pcb line.... Should have access to the compound that is used to insulate the board?... Forgot what's that called...

by qks57 Tue 20 Sep 2011 - 23:15

just get a waterproof servo from Traxxas.. the 2075 is a good choice..

by **Harakiri** Tue 20 Sep 2011 - 23:40

You can also try Fitec Digital hitorque 21kg waterproof servo. I m using it on my Wraith it really waterproof proven. As price wise it the same as traxxass 2075 but traxxass is plastic n not digital.

by RTECH Wed 21 Sep 2011 - 17:06

Harakiri wrote:You can also try Fitec Digital hitorque 21kg waterproof servo. I m using it on my Wraith it really waterproof proven. As price wise it the same as traxxass 2075 but traxxass is plastic n not digital.

Bro, where on earth you get those monster servo?

by **Harakiri** Wed 21 Sep 2011 - 19:12

RTECH wrote:
Harakiri wrote:You can also try Fitec Digital hitorque 21kg waterproof servo. I m using it on my Wraith it really waterproof proven. As price wise it the same as traxxass 2075 but traxxass is plastic n not digital.

Bro, where on earth you get those monster servo?

I got it from Eric Cheng. Jet hobby also selling it bro but quite X lah. It metal gearing,digital hitorque 21kg servo n waterproof. You interested to put on your Wraith too.

by Leong02 Wed 21 Sep 2011 - 20:08

Thanks everyone.

RTECH mention the O Ring, but where can I find it ? The gap between the horn looks very small.

That pcb coating require heat cure, not good for general/common pcb.

I'm use wax to coat the pcb & cable, only the shaft not secure, I just stuff more grease, see how on next trail.

by RTECH Thu 22 Sep 2011 - 18:06

Leong02 wrote:Thanks everyone.

RTECH mention the O Ring, but where can I find it ? The gap between the horn looks very small.

That pcb coating require heat cure, not good for general/common pcb.

I'm use wax to coat the pcb & cable, only the shaft not secure, I just stuff more grease, see how on next trail.

The O ring is from the shock seal. The O ring is compressable . Compressing it , form a seal in between the horn and the gear head.

by Leong02 Thu 22 Sep 2011 - 19:35

Thanks RTECH, will try the O Ring.

by RTECH Thu 22 Sep 2011 - 20:03

Leong02 wrote:Thanks RTECH, will try the O Ring.

No problem , Leong. Hope it works for you.

by Jcdeme Sun 16 Oct 2011 - 1:06

Bro's, would the Traxxas 2075 servo work well as the steering servo for Tamiya Tundra?

by boolean21 Sun 16 Oct 2011 - 1:53

Jcdeme wrote:Bro's, would the Traxxas 2075 servo work well as the steering servo for Tamiya Tundra?

some of the bros are using 2075... my trucks are using the Blue Bird high torque servo BMS-620MG.... cheap and waterproof too.... ordered on hobbyking....

only thing i used is grease on the output shaft.... Smile

by Jcdeme Sun 23 Oct 2011 - 0:54

bro, pardon my ignorance but where to buy grease? And what type to buy?

by boolean21 Sun 23 Oct 2011 - 1:11

Jcdeme wrote:bro, pardon my ignorance but where to buy grease? And what type to buy?

Most hardware shops got sell.... Best would be marine grease I think... But I just used normal grease...

by RTECH Sun 23 Oct 2011 - 11:53

Jcdeme wrote:bro, pardon my ignorance but where to buy grease? And what type to buy?

Dun buy grease at hobby shop, dam F**K expensive. Just get from any motorcar spare parts shop. Get the lithum red rubber grease, repel water.

by qks57 Mon 24 Oct 2011 - 22:40

best to just get the Fitec waterproof servo. cheap and good. soak in water oso no problem.

by Jcdeme Tue 25 Oct 2011 - 20:51

Thanks bros for the many advice.

Just ordered from hobby king. Hope these work as claimed:

http://www.hobbyking.com/hobbyking/store/%5F%5F9440%5F%5FBMS%5F660DMG%5FHS%5FSuper%5FStrong%5FDigital%5FServo%5FMG%5F14%5F2kg%5F17sec%5F52g.html

http://www.hobbyking.com/hobbyking/store/%5F%5F8776%5F%5FBMS%5F620MG%5FHigh%5FTorque%5FServo%5FMetal%5FGear%5F9%5F1kg%5F15sec%5F50g.html

For some reason my Traxxas 2075 turned haywire.

Btw should I use metal servo horn on such servo with my Tundra?

by boolean21 Tue 25 Oct 2011 - 20:58

Bms 620mg is tested and proven liao...
Cheap and good... Only put some grease on the output shaft...

by RTECH Sun 30 Oct 2011 - 20:20

Burn my DIY waterproof Axial AS-2 servo. Dunno wat the hell happen. Was still working after the swim and today not even start crawling and the servo died. Took it a part found wires burn and burn carbon smell.
Waterproof servo 3y72_d67_u8vkf

by RTECH Sun 30 Oct 2011 - 20:23

boolean21 wrote:Bms 620mg is tested and proven liao...
Cheap and good... Only put some grease on the output shaft...

Boo, you connect any bec for the Bms620mg?

by boolean21 Sun 30 Oct 2011 - 20:54

RTECH wrote:
boolean21 wrote:Bms 620mg is tested and proven liao...
Cheap and good... Only put some grease on the output shaft...

Boo, you connect any bec for the Bms620mg?

Ya, last time use the 8A bec from jet hobby, $35... Burnout after few months....
Now all my trucks using cheap 2S-8S 5A bec from ebay.... So far so good....

I think your bec too solid liao.... Keep supplying when the servo stuck...
If the servo board Ok, try soldering the wires... Or use the spoilt servo for other projects....

by RTECH Sun 30 Oct 2011 - 21:03

boolean21 wrote:

Ya, last time use the 8A bec from jet hobby, $35... Burnout after few months....
Now all my trucks using cheap 2S-8S 5A bec from ebay.... So far so good....

I think your bec too solid liao.... Keep supplying when the servo stuck...
If the servo board Ok, try soldering the wires... Or use the spoilt servo for other projects....

The wires are still intact only insulation burn. And the white wire have a ring dunno where it connect, strange.... As for the servo PCB, hmm... there might be a problem reusing coz hv to remove the silicon and the silcon is quite strong.
Dun feel like using BEC any more. RX box also very small hard to squeeze in.
Hobbyking dun hv HV servo ley.

by boolean21 Sun 30 Oct 2011 - 21:06

The ring looks like grounding leh.... If ground wire, no insulation..

Hmmm, I tot I saw on hk before, maybe remember wrongly... I search again...

by RTECH Tue 1 Nov 2011 - 23:25

Xq-power stated splash proof . There are O rings all round, even the screws. Maybe they haven't test dipping the servo in water.

Waterproof servo Moz-screenshot

The BMS-620 looks exactly like Axial AS-2 servo but this one is waterproof.
The casing have rubber fittings. But the AS-2 have none.
Dun have the explode view, not sure whether the output shaft have internal O rings.
Plastic gears inside. AS-2 metal gears, maybe can swop.
Review no good , maybe not for bashing use.

by boolean21 Tue 1 Nov 2011 - 23:44

RTECH wrote:
Xq-power stated splash proof . There are O rings all round, even the screws. Maybe they haven't test dipping the servo in water.

The BMS-620 looks exactly like Axial AS-2 servo but this one is waterproof.
The casing have rubber fittings. But the AS-2 have none.
Dun have the explode view, not sure whether the output shaft have internal O rings.

i only opened the first bms620mg the i bought... the rest of the 620mg and 620, i only greased the output shafts...

hmm... that time when i opened, i remember there was a thin rubber gasket in between the rear casing cover, other than that, i didn't really check for other O rings at the other locations...

when i closed it back, i was worried that i didn't put the rubber gasket properly, so i just silicone in between the gaps where the casing closes... kiasu ma... Very Happy

that is the first bms620mg that i bought for my honcho... till now, the servo is still working great... swam, mudded, etc.... bms620mg gets my vote! Very Happy

by Amerkulai Fri 11 Jan 2013 - 23:13

Leong02 wrote:Any idea to do so?

Found water inside the servo, my steering wheel go hairwire on the last trail.

You can use plasti dip or electric liquid tape to waterproof your servo..you can check on youtube

by DWJL511 Sat 19 Jan 2013 - 15:00

boolean21 wrote:...that is the first bms620mg that i bought for my honcho... till now, the servo is still working great... swam, mudded, etc.... bms620mg gets my vote!

Hey boolean can i ask u if this is a direct fit for my stock honcho rtr? and do I really need a bec (what's that for?)

i bot the hitec 646wp waterproof one but seems too tall to fit leh. also AS-2 horn will not fit on the hitec as diff size. not sure wat to do now confused

by laneboysrc Sat 19 Jan 2013 - 15:27

DWJL511 wrote:i bot the hitec 646wp waterproof one but seems too tall to fit leh. also AS-2 horn will not fit on the hitec as diff size. not sure wat to do now

Strange?!? The 646WP is "standard size", exactly like the stock Honcho. Note that the servo mounts on the plate of the Honcho are adjustable.

The horn will indeed not fit. Hitec is a bit of an odd-ball and uses 24 splines on the output shaft. Bluebird uses 25 splines, as does the Axial AS-2, Futaba, Tamiya, Ace RC, and TowerPro.
JR, KO, Sanwa, Acoms, Feetech use 23 spline.

You should be able to use one of the horn that came with the Hitec servo, possibly you will have to cut one arm off the horn.

by DWJL511 Sat 19 Jan 2013 - 15:32

laneboysrc wrote:
DWJL511 wrote:i bot the hitec 646wp waterproof one but seems too tall to fit leh. also AS-2 horn will not fit on the hitec as diff size. not sure wat to do now

Strange?!? The 646WP is "standard size", exactly like the stock Honcho. Note that the servo mounts on the plate of the Honcho are adjustable.

The horn will indeed not fit. Hitec is a bit of an odd-ball and uses 24 splines on the output shaft. Bluebird uses 25 splines, as does the Axial AS-2, Futaba, Tamiya, Ace RC, and TowerPro.
JR, KO, Sanwa, Acoms, Feetech use 23 spline.

You should be able to use one of the horn that came with the Hitec servo, possibly you will have to cut one arm off the horn.

hi boolean,

It can fit in that I can mount it and screw it in, but the horn will not clear the batt mount bar tht is directly above it. i.e. servo ht is a bit too tall. If I remove that bar, then the batt mount will only sit on 2 screws side by side, ie. become like seesaw

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