12th scale servo?
09-28-2004, 11:06 AM
#1
12th scale servo?
I was Just wondering what servo should use on a 12th scale?
09-28-2004, 11:08 AM
#2
I use and like the JR 3550... There is a good digital Hi-Tec that people like, but I forget the model...
09-28-2004, 11:20 AM
#3
do you know the speed, tork, and prices for both of them?
09-28-2004, 11:30 AM
#4
09-28-2004, 11:55 AM
#5
I think this is the Hitec one you were thinking of : HS-5245MG Digital Mini servo.
http://www.servocity.com/html/hs-524...ital_mini.html
.12 at 6v... but in a 1/12th you only have 4.8v so .15sec and 61oz of torque.
http://www.servocity.com/html/hs-524...ital_mini.html
.12 at 6v... but in a 1/12th you only have 4.8v so .15sec and 61oz of torque.
09-28-2004, 12:28 PM
#7
Thank you everybody!
You all helped alot
You all helped alot
09-28-2004, 12:29 PM
#8
Originally posted by slots
Hitec also makes a non-digital ball bearing mini - inexpensive but good in a 1/12 - the number is HS225BB, I think they also make a metal gear version, too.
Hitec also makes a non-digital ball bearing mini - inexpensive but good in a 1/12 - the number is HS225BB, I think they also make a metal gear version, too.
09-28-2004, 12:58 PM
#11
I will be getting one of those.. I have a KO radio now and want a KO servo...
09-28-2004, 01:23 PM
#12
Originally posted by Scott Fisher
I would use either the KO servo (947 or 949 I believe) or the futabal (9602 is analog, 9650 is digital)
I would use either the KO servo (947 or 949 I believe) or the futabal (9602 is analog, 9650 is digital)
09-28-2004, 01:34 PM
#13
Originally posted by Tony Szep
I have heard that is a really good servo
I have heard that is a really good servo
You can get more information here: http://www.kopropo.com/servos.htm
from what ive seen in the pits.. its the most popular servo for the pan/direct drive and 12th scale guys here at socal raceway.
09-28-2004, 01:38 PM
#14
Multiplex also has a good digital mini servo
09-28-2004, 01:41 PM
#15
So if a KO PDS-947 has .09 transit and 38.8 oz/in of torque at 6.0v... what do you think it will have at 4.8v.
I have an airtronics 94145 that has .07 transit and 33 oz/in of torque at 6.0v but at 4.8v it can't hold center very well in my 1/12th scale. I can only imagine how weak it is when I'm accelerating and pulling a lot of amps and dropping the available voltage well below 4.8v.
I know I could solve that problem by using a receiver pack but I think I'd rather just get a Futaba 9650 that is rated for .14 transit and 50oz/in of torque at 4.8v not 6.0. Heck... at 6.0v it's rated at .11 transit and 62.5 oz/in of torque.
For easy reference here are all the 6.0v numbers since 6.0v is what I could find for all servos mentioned:
Futaba
9602
.09sec and 37oz/in
9650 digital
.11sec and 62.5oz/in
Airtronics
94145
.07sec and 33oz/in
Hitec
HS-5245MG digital
.12sec and 76oz/in
KO
PDS-947 OR PDS-949 both digital
.09sec and 38.8oz/in
hope that helps.
I have an airtronics 94145 that has .07 transit and 33 oz/in of torque at 6.0v but at 4.8v it can't hold center very well in my 1/12th scale. I can only imagine how weak it is when I'm accelerating and pulling a lot of amps and dropping the available voltage well below 4.8v.
I know I could solve that problem by using a receiver pack but I think I'd rather just get a Futaba 9650 that is rated for .14 transit and 50oz/in of torque at 4.8v not 6.0. Heck... at 6.0v it's rated at .11 transit and 62.5 oz/in of torque.
For easy reference here are all the 6.0v numbers since 6.0v is what I could find for all servos mentioned:
Futaba
9602
.09sec and 37oz/in
9650 digital
.11sec and 62.5oz/in
Airtronics
94145
.07sec and 33oz/in
Hitec
HS-5245MG digital
.12sec and 76oz/in
KO
PDS-947 OR PDS-949 both digital
.09sec and 38.8oz/in
hope that helps.
