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[frogman3]

HI ALL WILL A sail winch servo turn more than a normal servo ?


chris

[Martin (Admin)]

Not all, 2 types ( I know off );

Sail arm servo, much like normal server but usually much more powerful and longer arm,

Sail winch, has a drum on top, multiturn.

https://www.modelboatmayhem.co.uk/forum/index.php?topic=3259.0
https://www.theamya.org/single-arm-or-double-arm-sail-arm-setup.html

[frogman3]

HI Martin so will it turn more the one with the drum on it ?   as i want it to turn my gun turrests
cheers chris

[Martin (Admin)]

Sail winch are many, many turns & probably not accurate enough for gun turrets.....

How about normal servos, with something called a 'servo extender'!

https://shop.bristolbotbuilders.com/product/servo-extender/

https://modelradioworkshop.co.uk/shop/servo-control-devices/servo-travel-expander/

https://www.mr-rcworld.co.uk/shop/180-servo-camera-expander/

 

[Akira]

I have found that GoBilda servos work very well for turrets and the like. They rotate 180 degrees out of the box, and with a servo extender added to the circuit, will provide up to 300 degrees rotation, all protionally. As well, they can be programmed to continuous rotation with proportional speed and direction. They are available in three different torque/speed versions. The "torque" version I hve found to be perfect for rotating heavt objects, ie, turrets. The continuous rotation mode makes them ideal as power plants for small models as well as drive systems for radars.

https://www.gobilda.com/standard-size-servos/  The servo programmer, found in the "electronics" page is needed to swithc the programming of the servos from proportonal to continous rotation. $10 US. You need only one programmer.

They are available to purchase direct from the company, which is very fast.

[frogman3]

Sail winch are many, many turns & probably not accurate enough for gun turrets.....

How about normal servos, with something called a 'servo extender'!

https://shop.bristolbotbuilders.com/product/servo-extender/

https://modelradioworkshop.co.uk/shop/servo-control-devices/servo-travel-expander/

https://www.mr-rcworld.co.uk/shop/180-servo-camera-expander/

HI Martin many thanks for your reply  but ive already sent for a sail winch servo an a r/c 16th tank turret gear ring so i'll try it with my gears an see what happens
cheers
chris

[frogman3]

I have found that GoBilda servos work very well for turrets and the like. They rotate 180 degrees out of the box, and with a servo extender added to the circuit, will provide up to 300 degrees rotation, all protionally. As well, they can be programmed to continuous rotation with proportional speed and direction. They are available in three different torque/speed versions. The "torque" version I hve found to be perfect for rotating heavt objects, ie, turrets. The continuous rotation mode makes them ideal as power plants for small models as well as drive systems for radars.

https://www.gobilda.com/standard-size-servos/The servo programmer, found in the "electronics" page is needed to swithc the programming of the servos from proportonal to continous rotation. $10 US. You need only one programmer.

They are available to purchase direct from the company, which is very fast.

HI Akria cheers for your info also  BTH i dont understand half what you are saying as im in the uk
but thanks all the same for the link as i will look through it
chris

[Akira]

Frogman3,Most servo have 60 degree rotation from the factory. GoBilda's have 180 degree rotation, from the factory. Being digital servos, they can be made to operate in two different modes, proportional, ie, like a normal servo, or continuous rotation like a geared motor with a buit in electronic speed control. Sitchiing modes is done using the servo programmer I previusly mentioned.As well, wwhen in the proportional mode, the servos are capable of being made to rotate up to 300 degrees.(most turrets rotated around 270 degrees. To acheivee this 300 degree rotation, a servo extender( found in the electronics page of the GoBilda website) is added between the receiver and the servo. It allows for adjustment of total rotation, in degrees, as well as the degree of rotation to the right or left of center. If you are operating a computer radio, the range of motion either side of center can be adjusted on the radio, but the extender is still required to allow the servo to rotated greater than 180 degrees(up to 300 degrees.)I hope that this is helps a bit.Jonathan
 

[Martin (Admin)]

HI Akria cheers for your info also  BTH i dont understand half what you are saying as im in the uk
but thanks all the same for the link as i will look through it
chris

https://www.gobilda.com/standard-size-servos/

Link fixed!   

[Martin (Admin)]

 
The '2000 Series Dual Mode Servo (25-2, Torque)' looks very interesting! 

[Akira]

Thanks for fixing the link Martin. Sorry I goofed. yes the torque version is the way to go. I have no problem driving 1/4"/1' dual 5'/38 mounts with them. Those were found on late war USN DD's and as secondary AA mounts on BB's and cruisers. With speed regulation of the rotation rate, either thru a transmitter, or a servo slow, the effect is excellent.

[frogman3]

HI again Johnathan well ive tried to understand what you are saying regards this servo but for the moment ive ordered a sailwinch servo that does 6 turns if i understand it correctly as you will have to exscuse me as i dont know much about all these differnt servos as i have normaly just used the futarba a303 an they have done the job on my other warships but this turret on my tiger is the biggest ive ever done an ive also ordered a r/c tank  turret ring gear with large teeth so i only hope it will mesh in ok with my gears that i have as then i'll make up a gearbox how i have done on some of my big ships but many thanks for the info an i'll see how i get on 
all best to you Sir
chris

[Akira]

Chris,There is more than one way to skin a cat. (sorry cat). last point I'll make on the GoBilda servos, is that I use them direct drive, ie, no ring gear or such. Servo, shaft to the turret and that is all that is neede. Best of luck with your approach.

[frogman3]

Chris,There is more than one way to skin a cat. (sorry cat). last point I'll make on the GoBilda servos, is that I use them direct drive, ie, no ring gear or such. Servo, shaft to the turret and that is all that is neede. Best of luck with your approach.

HI  johnathan ok which servo is it the one you are talkin about the number of the servo please so i know which one to look at an price ? for derict drive then please as this is getting very costly
cheers
chris 

[Akira]

This is the one I have been using with success. I doubt that it would cost more than a descent sail servo.https://www.gobilda.com/2000-series-dual-mode-servo-25-2-torque/

[frogman3]

This is the one I have been using with success. I doubt that it would cost more than a descent sail servo.https://www.gobilda.com/2000-series-dual-mode-servo-25-2-torque/

OK johnathan  cheers for the link i'll see what happens with my idea  first  then try what you propose thanks
chris