LowProfile servo p
#5
What are you going to run them in, 1/10 or 1/8 buggy, car,truck, offroad or onroad?
The sanwa has better specs, and can run 6-7.4v. The Xpert is run on 4.8-6v
The sanwa has better specs, and can run 6-7.4v. The Xpert is run on 4.8-6v
Last edited by 1/8 IC Fan; 04-04-2019 at 08:01 AM.
#8
Tech Addict
iTrader: (8)
Joined: Jun 2009
Posts: 691
From: RC Track
Is $70 +/- your budget?
Close to $100
https://www.amainhobbies.com/bk-serv...ksbl10/p637011
or
https://www.amainhobbies.com/protek-...k-160t/p403453
Close to $100
https://www.amainhobbies.com/bk-serv...ksbl10/p637011
or
https://www.amainhobbies.com/protek-...k-160t/p403453
#12
Tech Master
Joined: Jul 2018
Posts: 1,011
From: Florida
Something sanwa does different that you may want to consider.
positive-the servo is programmable. In the world of servo control you send a command to the servo from the receiver. The servo interprets the command and tells the motor to move at a rate. The servo then compares the pot position to the commanded position and if it came up short or long as compared to what it internally predicted it compensates again to match the pot to the command. For example if it was on steering and the torque of the wheels was too much for the servo to make position it will internally add more command to get the commanded to match the actual position. Most servos do this. The sanwa is programable so you can tell it to hit the motor harder or softer in the compensation for initial, mid, and end positions. It is programmable so that a lack of load or more load than the model has set in it is right for your setup. This means less compensation for under or overshoot if you set it properly. To much in the low and it will oscillate. Too little in the low and it will be sluggish and take another small step to match the actual to commanded. Since you are using a throttle which will have very little load a servo that has an internal comparator expecting allot of load it may take a small step backwards to match the actual to commanded. It all happens in microseconds.
the bad-sanwa does not sell replacement gear sets but it may not matter to throttle control.
we know that some of the specs published dont mean anything. The CL is very fast but when servo mfgs publish specs you can bet they published them from a lab environment that enhances their product specs. What this means is that being able to adjust the internal servo compensations to match the response to the command makes it easier to account for the real world that doesnt exist in a lab.
positive-the servo is programmable. In the world of servo control you send a command to the servo from the receiver. The servo interprets the command and tells the motor to move at a rate. The servo then compares the pot position to the commanded position and if it came up short or long as compared to what it internally predicted it compensates again to match the pot to the command. For example if it was on steering and the torque of the wheels was too much for the servo to make position it will internally add more command to get the commanded to match the actual position. Most servos do this. The sanwa is programable so you can tell it to hit the motor harder or softer in the compensation for initial, mid, and end positions. It is programmable so that a lack of load or more load than the model has set in it is right for your setup. This means less compensation for under or overshoot if you set it properly. To much in the low and it will oscillate. Too little in the low and it will be sluggish and take another small step to match the actual to commanded. Since you are using a throttle which will have very little load a servo that has an internal comparator expecting allot of load it may take a small step backwards to match the actual to commanded. It all happens in microseconds.
the bad-sanwa does not sell replacement gear sets but it may not matter to throttle control.
we know that some of the specs published dont mean anything. The CL is very fast but when servo mfgs publish specs you can bet they published them from a lab environment that enhances their product specs. What this means is that being able to adjust the internal servo compensations to match the response to the command makes it easier to account for the real world that doesnt exist in a lab.
#14
Tech Addict
iTrader: (8)
Joined: Nov 2011
Posts: 717
It appears that replacement gear sets for the Sanwa PGS-CL servo are available (though expensive):
https://www.mibosport.com/en/sanwa-p...servo-gear-set
https://www.mibosport.com/en/sanwa-p...servo-gear-set



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