steering servo

[seaducerpete]

Is a hitec 645 mg going to be torque and centering power for a 91 vac in a 42 inch seaducer

 

[Brian Sorgente]

Should be fine. I run one in a gas rigger and it works well.

Brian

 

[Lay26]

133 oz @6v what more do you want?

 

[bsmtboy2]

A boat and motor of that size should have at least 200 oz/in to keep the boat steering without stressing out the servo. A good low cost one is the hobbico cs160

 

[seaducerpete]

Jerry says that the 645 is way to small

 

[Chris Wood]

pete

if jerry says it is way to small then you answered your own question.. RUN WHAT THE GUY THAT DESIGNED THE BOAT SUGGESTED.

easy as that

 

[brett english]

it might be overkill but i use a hitec 5755 in our seaducer--380oz torque---ive use the basic 1/4 servo and somehow the boat still pulled..with this beast its

runs straight and turns perfect

ps-im not even sure that servo is still available

 

[P THOMAS]

Peter you just going tohave to cut that servo tray up and use a big servo.

how about this one $69 http://www.servocity.com/html/hs-5805mg_servo.html

 

[steve wood]

this is the one you need. http://www.servocity.com/html/hs-5765mh_servo.html

 

[Joe Warren]

Speedmaster makes servos mounts for 1/4 scale servos and for mini servos. They work perfectly in a seaducer radio box. Just glue to the floor of the seaducer radio box in line with your other parts. 1/4 scale is the correct servo.

 

[Brian Sorgente]

Well when it comes to torque, more is always better... But I will say, the 645 in my gas rigger turns the boat on a dime and I've flipped it several times at over 70 mph without issues... With the servo anyway lol... I would think a gas rigger steering servo would have a lot harder life than a 90 mono one but regardless if you can get a servo with a ton of torque without losing lots of turning speed do it.

Brian

 

[dwilfong]

The rudder dose not have to turn that far to turn the boat. Remember the longer the servo arm the more toque you lose. use a short arm instead of limiting the servo EPA. take advantage of the shorter arm and the leverage it gives. that way you don't need all that servo.

I turn my servo speed down all the way so a fast servo is not needed. fast servo speed will just make a Seaducer even more of a challenge to drive as thy turn on a dime as it is.

If you don't mind spending the cash a JR DS8711 can not be beat.

Their is more to a servo than the power how it centers every time is most important.

David

 

[seaducerpete]

The rudder dose not have to turn that far to turn the boat. Remember the longer the servo arm the more toque you lose. use a short arm instead of limiting the servo EPA. take advantage of the shorter arm and the leverage it gives. that way you don't need all that servo.

I turn my servo speed down all the way so a fast servo is not needed. fast servo speed will just make a Seaducer even more of a challenge to drive as thy turn on a dime as it is.

If you don't mind spending the cash a JR DS8711 can not be beat.

Their is more to a servo than the power how it centers every time is most important.

David

and what determines how that servo centers centering is why jerry says to use 1/4 scale servos

 

[dwilfong]

The rudder dose not have to turn that far to turn the boat. Remember the longer the servo arm the more toque you lose. use a short arm instead of limiting the servo EPA. take advantage of the shorter arm and the leverage it gives. that way you don't need all that servo.

I turn my servo speed down all the way so a fast servo is not needed. fast servo speed will just make a Seaducer even more of a challenge to drive as thy turn on a dime as it is.

If you don't mind spending the cash a JR DS8711 can not be beat.

Their is more to a servo than the power how it centers every time is most important.

David

and what determines how that servo centers centering is why jerry says to use 1/4 scale servos

Old school and old tec. Time to step into the present day.

My SGX 1.01 boat turns on rails at 90+ with the JR DS8711 solid as a rock. Bent the hanger 9 metal arm 90deg and the rudder mount last weekend. servo not a problem. Have riped the servo mount out of the boat, servo no problem.

This servo was the first one I ever bought 5years ago. only replaced the one plastic gear in it once this year.

Bin under water more times than I can count never opened it up till the gear change. looked like new inside.

If I can't kill it no one can.

This servo ROCK'S!!!!!!!!!!!!!!

 

[Ian Inverarity]

I have used a similar servo to David in my 90 Seaducer for many years (the JR part numbers are different in Australia). Worked very well.

 

[John Finch]

The problem is not how strong the servo can force the rudder to the right to make a turn. It is how strong the servo can go back to center and hold it there. A mono will keep turning into the course after you let off the steering wheel if the servo is not strong enough. Hitec 805bb is the ticket and only costs about $40.00 and will definitely do the job at 343 inch ounces at 6 volts Only problem is it is large. Any other servo at 300 inch ounces will do the trick, but don't skimp or you will have problems.

Been there done that with my seaducer.

John

 

[Joe Warren]

And to add what john is saying .. You can buy 1/4 servo mount from Speedmaster hardware guys and it glues into the bottom of the radio box and holds the new 1/4 servo nicely. very clean strong & orderly..... Do Not Use the AEOMARINE flimsy crap that is in the seaducer inst booklet.... it is a joke to hold a servo with 300-400 oz of torque

 

[Piston1]

Futaba 9157 or 9156. Std size all metal gears stronger than any 1/4 servo that ever existed. Expensive servo but worth it.

 

[BigChuck]

Sorry Jose............But I/ we are going with the largest torque available........for sterring. I don't care if it is over kill or not.

And it is not Futaba...............600oz @ 7.4 is what I have. If you look at all the servos they are going the way of high voltage.

 

[Piston1]

Sorry Charles but you do not need an exotic servo with 600 oz. that don't fit in the radio box. We don't have the boat that needs 600oz yet. The 9157 / 9156 servos are readily available. If you are talking about a Savox 555oz servo they are way to big. If not then name the servo because I have no idea what you are talking about.