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Rotation Modification Difficulty List

1) Possible to Modify: This is either a Yes or No. In some circumstances, we have modified a servo listed as a “No” for some specialized applications.  If a servo listed as “No” is the only servo you can use, please contact us.

2) Difficulty: 1 is the easiest, 10 is the hardest. 
1-3 rating: Some very slight modifications.  Trimming of plastic with a knife or dremmel.
4-6 rating: Trimming of plastic with a knife or dremmel. Drilling out of final gear/spline.
7-9 rating: Pulling or tapping out of metal pin from metal spline gear.  Possible soldering.
10 rating: Drilling out of spline gear. Trimming inner case stops. Trimming spline gear stops. Possible soldering.

3) 4.8V RPM: Rotation per minute at 4.8 volts.

4) 6.0V RPM: Rotation per minute at 6.0 volts.

 Servo

1

2

3

4

 Sub-Micro Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-50

No

N/A

111

N/A

HS-55

No

N/A

58.8

71.4

HS-56HB

No

N/A

83.3

100

 Micro Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-65HB

No

N/A

71.4

90.9

HS-65MG

No

N/A

71.4

90.9

HS-81

No

N/A

90.9

111

HS-81MG

No

N/A

.990

111

HS-85BB

No

N/A

62.5

71.4

HS-85MG

Yes

8

62.5

71.4

 Mini Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-225BB

No

N/A

71.4

90.9

HS-225MG

Yes

6

71.4

90.9

 Digital Mini Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-5245MG

Yes

8

66.6

83.3

 Thin Wing Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-125MG

No

N/A

58.8

76.9

 Digital Thin Wing Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-5125MG

No

N/A

58.8

76.9

 Standard Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-311

Yes

5

52.6

66.6

HS-322HD

Yes

4

52.6

66.6

HS-325HB

Yes

3

52.6

66.6

HS-422

Yes

1

47.6

62.5

HS-425BB

Yes

1

47.6

62.5

HS-475HB

Yes

3

47.6

62.5

 High Torque Standard Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-545BB

Yes

3

43.4

58.8

HS-635HB

Yes

3

55.5

66.6

HS-645MG

Yes

7

41.6

50

HS-945MG

Yes

7

62.5

83.3

 High Speed Standard Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-525BB

Yes

3

58.8

76.9

HS-525MG

Yes

7

58.8

76.9

HS-625MG

Yes

7

55.5

76.9

HS-925MG

Yes

7

90.9

125

 Digital Standard Servos

Possible to Modify

Difficulty

4.8V Speed

6.0V RPM

HS-5475HB

Yes

3

43.4

55.5

 High Torque Digital Servos

Possible to Modify

Difficulty

4.8V Speed

6.0V RPM

HS-5645MG

Yes

7

43.4

55.5

HS-5945MG

Yes

7

62.5

76.9

HS-6635HB

Yes

5

55.5

66.6

HS-6985HB

Yes

5

62.5

76.9

HS-5955TG

Yes

9

52.6

66.6

HS-5998TG

Yes

9

43.4

52.6

HS-5995TG

Yes

9

66.6

76.9

 High Speed Digital Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-5625MG

Yes

7

58.8

71.4

HS-6965HB

Yes

5

100

125

HS-6975HB

Yes

5

76.9

100

HS-5925MG

Yes

7

100

125

HS-5996TG

Yes

9

76.9

100

HS-5997TG

Yes

9

58.8

71.4

 1/4 Scale Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-705MG

Yes

8

38.5

50

HS-755HB

Yes

5

35.7

43.4

HS-765HB

Yes

5

38.5

50

HS-805BB

Yes

5

52.6

71.4

 Digital 1/4-Scale Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-5745MG

Yes

7

55.5

66.6

 Specialty Servos

Possible to Modify

Difficulty

4.8V RPM

6.0V RPM

HS-77BB

Yes

5

55.5

71.4

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