Waterproof High Torque Brush-less Servo

[Tom G]

Anyone tried of these yet in a 1/8 FE Unlimited

ProTek RC 370TBL "Black Label" Waterproof High Torque Brush-less Servo (High Voltage/Metal Case)

Dynamic Torque
@ 6.0V 600 oz-in (43.2 kg-cm)
Dynamic Torque
@ 7.4V 650 oz-in (46.8 kg-cm)
Motor Type
Brushless
Output Shaft 25 Tooth
Gears Steel
Weight 72g
Pulse/Frequency
1520μs / 333hz
Dimensions 40x20x37.8mm
Length (Bottom to Mount)
28.4mm

[oscarel]

I haven't used that one, but have the ProTek RC 130T in a gas boat since first of the year and I have not had any issues with it.

[Tom G]

I haven't used that one, but have the ProTek RC 130T in a gas boat since first of the year and I have not had any issues with it.

I use to be a serious Hi Tech 7950's & 7980's guy in my other hobby RC Rock crawlers not the scale stuff, but serious Custom built 1/8 Comp Crawlers 2 ESC's & @ 1 motor on each axle 4wd @ 4ws but kept burning the HI-tech's up even a mild voltages so switch to ProTek 170t's and have not smoke a servo 1 in 2 yrs (just for a size comparison the wheels on the pictured are 8 " in dia)

I'm sure the What I posted up above will be just fine especially with 600 + oz of Tq. just was wondering if anyone had used them in a boat and gave them a wet test yet
IMG_1062.jpg
IMG_1061.jpg

[Fluid]

There is no need for that kind of power in an FE boat. Boats are not crawlers. Even half that torque is more than required ever for much larger boats. Rather than spend the money on unnecessary power, IMO spend it on a good digital servo in the 200-250 in-oz range. The digital will have strong centering power which is more important that brute strength.


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[CraigP]

I agree 100%... I worked out the torque requirement on a rainy weekend and a 35" boat going 60mph, using 4" of rudder water penetration, took about 158oz/in". I figured that was driving it pretty hard (I'm not at that level, YET). So I got a 215oz/in" unit in there. Another point about overpowered servos is that they can voltage spike your receiver. They have a very high current pull when they start to move. I put a capacitor onto my unused recv. channel to tame down the 215oz unit. The UBEC has a chock (ferrite ring) on the power feed wire giving some L, then the added C made a nice filter.

[CraigP]

That's "choke" not chock... have I mentioned that spell checkers are a PIA?!

[kfxguy]

I'll tell you something I just noticed. I have a radio post green servo which is 249in oz at 6v and 305in-oz at 7.4v and just sitting on the bench turning the rudder back and forth, you can see the voltage drop .1v

I can only imagine when it's actually working.

Link to the servo. It's in my 34" mono

http://www.ebay.com/itm/Radiopost-Multi-Servo-Green-2nd-Gen-RPS2207M-Gen-2-Green-servo-/291187070670

[CraigP]

Put a cap on your receiver... Do you want me to post a pic?

[oscarel]

Some of the savox servos come with them. stops brown outs.

http://www.savoxusa.com/Glitch_Buster_Power_Capacitor_p/rce2474.htm

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[CraigP]

Pic posted anyway!

[Tom G]

A lot of good info and I thank U all only issues are no one answered the 1 question that was at the hart of my post

"just was wondering if anyone had used them in a boat and gave them a wet test yet "

It only required a 2 or a 3 lettered word NO OR YES

TNX GUYS

[oscarel]

looks like you answered your own question and probably pissed off a few people in the process.

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[CraigP]

NO!! You try it and let us know, how about that?