Top 25 for Best Double Servo

 

3Racing 3R3RAC-HFD26BU 26mm Aluminium Double Servo Arm For Futaba - Blue

3Racing #3R/3RAC-HFD26/BU 2.6mm Aluminium Double Servo Arm For Futaba – Blue

3Racing #3R/3RAC-HFD26/BU 2.6mm Aluminium Double Servo Arm For Futaba – Blue - Expediated shipping is shipped by dhl or fedex arrives in about than 2-5 days major cities will receive orders earlier. Give your all a bit more power, agility and better handling. Takes 7 to 15 business days by standard airmail shipping 80% of packages arrive within 10 business days most packages ship within 12 hours please allow 1 extra day if order is placed during the weekend. Fits most rc cars and trucks lightweight upgrade instantly enhances overall performance in handling and durability. Color blue.

 

6 Double Servo Power Gearbox Arm

6″ Double Servo Power Gearbox Arm

6″ Double Servo Power Gearbox Arm - These power servo gearbox arms are made from 6061-t6 aluminum.  We recommend purchasing at least (4) 6-32 x 3/8″ machine screws.  The end hole on the arms is 0.  They will bolt directly to the aluminum hub on the servo power gearboxes. . 140″ diameter but can easily be drilled out larger for various applications and linkages.

 

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm Double Servo Arm 3in Fitting for Futaba Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 3in Fitting for Futaba Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 3in Fitting for Futaba Servos - The sizes of double arm 3in. The m3 internal threads make it easier to fix ball head, linkage stopper, or directly connect the wires which connect the servo. Cnc machined aluminum alloy anodic oxidation treatment on surface, artistic while anti-corrosion. Applications standard servos. Coming with 25 teeth, compatible with futaba servo.

 

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm Double Servo Arm 4in Fitting for Futaba Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 4in Fitting for Futaba Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 4in Fitting for Futaba Servos - The sizes of double arm 4in. Coming with 25 teeth, compatible with futaba servo. The m3 internal threads make it easier to fix ball head, linkage stopper, or directly connect the wires which connect the servo. Cnc machined aluminum alloy anodic oxidation treatment on surface, artistic while anti-corrosion. Applications standard servos.

 

3Racing RC Hobby 3RAC-HFD26SI 26mm Aluminium Double Servo Arm For Futaba - Silver

3Racing RC Hobby 3RAC-HFD26/SI 2.6mm Aluminium Double Servo Arm For Futaba – Silver

3Racing RC Hobby 3RAC-HFD26/SI 2.6mm Aluminium Double Servo Arm For Futaba – Silver - Genuine 3racing parts. 30-day return policy. Fast shipping with tracking number. Most orders processed same day. Ships direct from usa warehouse.

 

HobbyKing Aluminum Double Servo Arm For Hitec Servos 25 spline  Weight 85g

HobbyKing Aluminum Double Servo Arm For Hitec Servos (25 spline) / Weight: 8.5g

HobbyKing Aluminum Double Servo Arm For Hitec Servos (25 spline) / Weight: 8.5g - Specsweight 8. Perfect for large models requiring a closed loop system. Cnc machined aluminum double servo arm for hitec servos (25 spline), the holes are threaded for m3 bolts, double m2 spline locking bolt supplied. 5gdimensions 110 x 9 x 3mmspline count 25 id 026000010-0.

 

HobbyKing CNC Alloy Double Servo Arm X-Long JR

HobbyKing CNC Alloy Double Servo Arm X-Long (JR)

HobbyKing CNC Alloy Double Servo Arm X-Long (JR) - Esc choice look at the max amps figure given by the motor manufacturer in the data section and generally add 25% headroom, so, if a motor is rated to 15a, then choose at least an 18a esc, better still a 20a and so on if you are using a 4s lipo, that the esc is rated for 4s voltage also look at bec rating, if the servo count is over 2647, then consider purchasing an esc with a high amp rated sbec, or a seperate ubec, opto type esc’s (they have no bec, keeping the esc seperate from rx suply). Motor choice, kv or rpm per volt if you are used to ic, the simple analogy is to treat low kv motors as 4 stroke engine equivalents and mid-high kv motors as 2 stroke engine equivalents, if you are not used to ic then we can give you some examples example 1trainer/sport model, 1lb auw, we want 100w motor (3s 20c lipoly) mid kv for general flying, probably around 1200kv~1400kv, so around 8″ prop example 2warbird/scale model, 1lb auw 2763w motor, kv choice,. Motor power choice(auw, or flying weight of model choice) 1) vintage types many non-aerobatic indoor flyers -50w~70w per 1lb 2)trainers, gliders and high wing scale -70w~100w per 1lb 3)sport flyer with general aerobatic performance -100w per 1lb 4)warbirds -120w~150w per 1lb 5)multi engined models -100w per 1lb (thrust from multiple props gives in effect, more than 100w per 1lb performance) 6)edf jets -150w~200w per 1lb 7)3d, f3a and high performance models, 150w~200w per 2644lb. Lipoly voltage choice generally, to keep lipo’s in good order, try and keep max amps to around 50~60% of the capacity/c rating of the lipoly pack 1)up to 50w1s~2s 2)up to 100w2s~3s 3)100w up to 500w 3s 4)500w up to 800w4s (this is the 040~046 glow equivalent range favoured by many club flyers) 5)800w up to 1000w5s 6)900w up to 1500w6s (this is the 060~090 ic equivalent range) 7)8s~2653s packs are for very large and generally specialised models. Here is a rough guide to choosing the electric power train needed for various model types, bear in mind that over-powering is fine but the penalty is additional weight, and a good model is one that is balanced in terms of power, flying weight and build quality customer service is our top priority, and while some issues are beyond our control, we do our best to ensure your transaction exceeds your expectationsshould you have an issue, please contact us via messages and we are always there.

 

3Racing 3R3RAC-HFD26RE 26mm Aluminium Double Servo Arm For Futaba - Red

3Racing #3R/3RAC-HFD26/RE 2.6mm Aluminium Double Servo Arm For Futaba – Red

3Racing #3R/3RAC-HFD26/RE 2.6mm Aluminium Double Servo Arm For Futaba – Red - Expediated shipping is shipped by dhl or fedex arrives in about than 2-5 days major cities will receive orders earlier. Color red. Fits most rc cars and trucks lightweight upgrade instantly enhances overall performance in handling and durability. Give your all a bit more power, agility and better handling. Takes 7 to 15 business days by standard airmail shipping 80% of packages arrive within 10 business days most packages ship within 12 hours please allow 1 extra day if order is placed during the weekend.

 

3Racing RC Hobby 3RAC-HKD30PU 30 mm Aluminium Double Servo Arm For Ko PropoSanwa - Purple

3Racing RC Hobby 3RAC-HKD30/PU 3.0 mm Aluminium Double Servo Arm For Ko Propo/Sanwa – Purple

3Racing RC Hobby 3RAC-HKD30/PU 3.0 mm Aluminium Double Servo Arm For Ko Propo/Sanwa – Purple - Genuine 3racing parts. Ships direct from usa warehouse. Fast shipping with tracking number. Most orders processed same day. 30-day return policy.

 

HobbyKing CNC Alloy Double Servo Arm X-Long Futaba

HobbyKing CNC Alloy Double Servo Arm X-Long (Futaba)

HobbyKing CNC Alloy Double Servo Arm X-Long (Futaba) - Motor power choice(auw, or flying weight of model choice) 1) vintage types many non-aerobatic indoor flyers -50w~70w per 1lb 2)trainers, gliders and high wing scale -70w~100w per 1lb 3)sport flyer with general aerobatic performance -100w per 1lb 4)warbirds -120w~150w per 1lb 5)multi engined models -100w per 1lb (thrust from multiple props gives in effect, more than 100w per 1lb performance) 6)edf jets -150w~200w per 1lb 7)3d, f3a and high performance models, 150w~200w per 8528lb. Esc choice look at the max amps figure given by the motor manufacturer in the data section and generally add 25% headroom, so, if a motor is rated to 15a, then choose at least an 18a esc, better still a 20a and so on if you are using a 4s lipo, that the esc is rated for 4s voltage also look at bec rating, if the servo count is over 8531, then consider purchasing an esc with a high amp rated sbec, or a seperate ubec, opto type esc’s (they have no bec, keeping the esc seperate from rx suply). Here is a rough guide to choosing the electric power train needed for various model types, bear in mind that over-powering is fine but the penalty is additional weight, and a good model is one that is balanced in terms of power, flying weight and build quality customer service is our top priority, and while some issues are beyond our control, we do our best to ensure your transaction exceeds your expectationsshould you have an issue, please contact us via messages and we are always there. Motor choice, kv or rpm per volt if you are used to ic, the simple analogy is to treat low kv motors as 4 stroke engine equivalents and mid-high kv motors as 2 stroke engine equivalents, if you are not used to ic then we can give you some examples example 1trainer/sport model, 1lb auw, we want 100w motor (3s 20c lipoly) mid kv for general flying, probably around 1200kv~1400kv, so around 8″ prop example 2warbird/scale model, 1lb auw 8647w motor, kv choice,. Lipoly voltage choice generally, to keep lipo’s in good order, try and keep max amps to around 50~60% of the capacity/c rating of the lipoly pack 1)up to 50w1s~2s 2)up to 100w2s~3s 3)100w up to 500w 3s 4)500w up to 800w4s (this is the 040~046 glow equivalent range favoured by many club flyers) 5)800w up to 1000w5s 6)900w up to 1500w6s (this is the 060~090 ic equivalent range) 7)8s~8537s packs are for very large and generally specialised models.

 

Aluminum Double Servo Arm 4 FUT

Aluminum Double Servo Arm, 4″ (FUT)

Aluminum Double Servo Arm, 4″ (FUT) - Key featuresaccurate attachment to the spline ensures no slop surface movementspline-loctm ensures a no-worry connection to the servorecessed screws lock in place two ways at the spline and with the servo attachment screwblack powder-coated finish maintains a quality look and finish.

 

HobbyKing CNC Alloy Double Servo Arm X-Long Futaba

HobbyKing CNC Alloy Double Servo Arm X-Long (Futaba)

HobbyKing CNC Alloy Double Servo Arm X-Long (Futaba) - Here is a rough guide to choosing the electric power train needed for various model types, bear in mind that over-powering is fine but the penalty is additional weight, and a good model is one that is balanced in terms of power, flying weight and build quality customer service is our top priority, and while some issues are beyond our control, we do our best to ensure your transaction exceeds your expectationsshould you have an issue, please contact us via messages and we are always there. Motor power choice(auw, or flying weight of model choice) 1) vintage types many non-aerobatic indoor flyers -50w~70w per 1lb 2)trainers, gliders and high wing scale -70w~100w per 1lb 3)sport flyer with general aerobatic performance -100w per 1lb 4)warbirds -120w~150w per 1lb 5)multi engined models -100w per 1lb (thrust from multiple props gives in effect, more than 100w per 1lb performance) 6)edf jets -150w~200w per 1lb 7)3d, f3a and high performance models, 150w~200w per 8532lb. Esc choice look at the max amps figure given by the motor manufacturer in the data section and generally add 25% headroom, so, if a motor is rated to 15a, then choose at least an 18a esc, better still a 20a and so on if you are using a 4s lipo, that the esc is rated for 4s voltage also look at bec rating, if the servo count is over 8535, then consider purchasing an esc with a high amp rated sbec, or a seperate ubec, opto type esc’s (they have no bec, keeping the esc seperate from rx suply). Motor choice, kv or rpm per volt if you are used to ic, the simple analogy is to treat low kv motors as 4 stroke engine equivalents and mid-high kv motors as 2 stroke engine equivalents, if you are not used to ic then we can give you some examples example 1trainer/sport model, 1lb auw, we want 100w motor (3s 20c lipoly) mid kv for general flying, probably around 1200kv~1400kv, so around 8″ prop example 2warbird/scale model, 1lb auw 8651w motor, kv choice,. Lipoly voltage choice generally, to keep lipo’s in good order, try and keep max amps to around 50~60% of the capacity/c rating of the lipoly pack 1)up to 50w1s~2s 2)up to 100w2s~3s 3)100w up to 500w 3s 4)500w up to 800w4s (this is the 040~046 glow equivalent range favoured by many club flyers) 5)800w up to 1000w5s 6)900w up to 1500w6s (this is the 060~090 ic equivalent range) 7)8s~8541s packs are for very large and generally specialised models.

 

3Racing 3R3RAC-HFD26SI 26mm Aluminium Double Servo Arm For Futaba - Silver

3Racing #3R/3RAC-HFD26/SI 2.6mm Aluminium Double Servo Arm For Futaba – Silver

3Racing #3R/3RAC-HFD26/SI 2.6mm Aluminium Double Servo Arm For Futaba – Silver - Color silver. Takes 7 to 15 business days by standard airmail shipping 80% of packages arrive within 10 business days most packages ship within 12 hours please allow 1 extra day if order is placed during the weekend. Expediated shipping is shipped by dhl or fedex arrives in about than 2-5 days major cities will receive orders earlier. Fits most rc cars and trucks lightweight upgrade instantly enhances overall performance in handling and durability. Give your all a bit more power, agility and better handling.

 

3Racing RC Hobby 3RAC-HFD26PU 26mm Aluminium Double Servo Arm For Futaba - Purple

3Racing RC Hobby 3RAC-HFD26/PU 2.6mm Aluminium Double Servo Arm For Futaba – Purple

3Racing RC Hobby 3RAC-HFD26/PU 2.6mm Aluminium Double Servo Arm For Futaba – Purple - Genuine 3racing parts. Most orders processed same day. 30-day return policy. Ships direct from usa warehouse. Fast shipping with tracking number.

 

3Racing 3R3RAC-HFD26LB 26mm Aluminium Double Servo Arm For Futaba - Light Blue

3Racing #3R/3RAC-HFD26/LB 2.6mm Aluminium Double Servo Arm For Futaba – Light Blue

3Racing #3R/3RAC-HFD26/LB 2.6mm Aluminium Double Servo Arm For Futaba – Light Blue - Color blue. Give your all a bit more power, agility and better handling. Expediated shipping is shipped by dhl or fedex arrives in about than 2-5 days major cities will receive orders earlier. Takes 7 to 15 business days by standard airmail shipping 80% of packages arrive within 10 business days most packages ship within 12 hours please allow 1 extra day if order is placed during the weekend. Fits most rc cars and trucks lightweight upgrade instantly enhances overall performance in handling and durability.

 

3Racing RC Hobby 3RAC-HKD30LB 30 mm Aluminium Double Servo Arm For Ko PropoSanwa - Light Blue

3Racing RC Hobby 3RAC-HKD30/LB 3.0 mm Aluminium Double Servo Arm For Ko Propo/Sanwa – Light Blue

3Racing RC Hobby 3RAC-HKD30/LB 3.0 mm Aluminium Double Servo Arm For Ko Propo/Sanwa – Light Blue - Most orders processed same day. Genuine 3racing parts. Ships direct from usa warehouse. Fast shipping with tracking number. 30-day return policy.

 

HobbyKing CNC Alloy Double Servo Arm X-Long Futaba

HobbyKing CNC Alloy Double Servo Arm X-Long (Futaba)

HobbyKing CNC Alloy Double Servo Arm X-Long (Futaba) - Motor choice, kv or rpm per volt if you are used to ic, the simple analogy is to treat low kv motors as 4 stroke engine equivalents and mid-high kv motors as 2 stroke engine equivalents, if you are not used to ic then we can give you some examples example 1trainer/sport model, 1lb auw, we want 100w motor (3s 20c lipoly) mid kv for general flying, probably around 1200kv~1400kv, so around 8″ prop example 2warbird/scale model, 1lb auw 2791w motor, kv choice,. Here is a rough guide to choosing the electric power train needed for various model types, bear in mind that over-powering is fine but the penalty is additional weight, and a good model is one that is balanced in terms of power, flying weight and build quality customer service is our top priority, and while some issues are beyond our control, we do our best to ensure your transaction exceeds your expectationsshould you have an issue, please contact us via messages and we are always there. Motor power choice(auw, or flying weight of model choice) 1) vintage types many non-aerobatic indoor flyers -50w~70w per 1lb 2)trainers, gliders and high wing scale -70w~100w per 1lb 3)sport flyer with general aerobatic performance -100w per 1lb 4)warbirds -120w~150w per 1lb 5)multi engined models -100w per 1lb (thrust from multiple props gives in effect, more than 100w per 1lb performance) 6)edf jets -150w~200w per 1lb 7)3d, f3a and high performance models, 150w~200w per 2672lb. Esc choice look at the max amps figure given by the motor manufacturer in the data section and generally add 25% headroom, so, if a motor is rated to 15a, then choose at least an 18a esc, better still a 20a and so on if you are using a 4s lipo, that the esc is rated for 4s voltage also look at bec rating, if the servo count is over 2675, then consider purchasing an esc with a high amp rated sbec, or a seperate ubec, opto type esc’s (they have no bec, keeping the esc seperate from rx suply). Lipoly voltage choice generally, to keep lipo’s in good order, try and keep max amps to around 50~60% of the capacity/c rating of the lipoly pack 1)up to 50w1s~2s 2)up to 100w2s~3s 3)100w up to 500w 3s 4)500w up to 800w4s (this is the 040~046 glow equivalent range favoured by many club flyers) 5)800w up to 1000w5s 6)900w up to 1500w6s (this is the 060~090 ic equivalent range) 7)8s~2681s packs are for very large and generally specialised models.

 

3Racing RC Hobby 3RAC-HKD30SI 30 mm Aluminium Double Servo Arm For Ko PropoSanwa - Silver

3Racing RC Hobby 3RAC-HKD30/SI 3.0 mm Aluminium Double Servo Arm For Ko Propo/Sanwa – Silver

3Racing RC Hobby 3RAC-HKD30/SI 3.0 mm Aluminium Double Servo Arm For Ko Propo/Sanwa – Silver - Ships direct from usa warehouse. Most orders processed same day. 30-day return policy. Genuine 3racing parts. Fast shipping with tracking number.

 

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm Double Servo Arm 4in Fitting for JR Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 4in Fitting for JR Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 4in Fitting for JR Servos - Coming with 23 teeth, compatible with jr servo. The sizes of double arm 4in. Applications standard servos. Cnc machined aluminum alloy anodic oxidation treatment on surface, artistic while anti-corrosion. The m3 internal threads make it easier to fix ball head, linkage stopper, or directly connect the wires which connect the servo.

 

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm Double Servo Arm 4in Fitting for Hitec Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 4in Fitting for Hitec Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 4in Fitting for Hitec Servos - Coming with 24 teeth, compatible with hitec servo. Applications standard servos. The m3 internal threads make it easier to fix ball head, linkage stopper, or directly connect the wires which connect the servo. Cnc machined aluminum alloy anodic oxidation treatment on surface, artistic while anti-corrosion. The sizes of double arm 4in.

 

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm Double Servo Arm 3in Fitting for Hitec Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 3in Fitting for Hitec Servos

6STARHOBBY CNC Machined Aluminum Alloy Full Servo Arm/ Double Servo Arm 3in Fitting for Hitec Servos - The sizes of double arm 3in. Coming with 24 teeth, compatible with hitec servo. The m3 internal threads make it easier to fix ball head, linkage stopper, or directly connect the wires which connect the servo. Applications standard servos. Cnc machined aluminum alloy anodic oxidation treatment on surface, artistic while anti-corrosion.

 

OFNA Racing Aluminum CNC Double Servo Arm Blue JR Airtronics

OFNA Racing Aluminum CNC Double Servo Arm, Blue: JR, Airtronics

OFNA Racing Aluminum CNC Double Servo Arm, Blue: JR, Airtronics - Takes 7 to 15 business days by standard airmail shipping 80% of packages arrive within 10 business days most packages ship within 12 hours please allow 1 extra day if order is placed during the weekend. Expediated shipping is shipped by dhl or fedex arrives in about than 2-5 days major cities will receive orders earlier. Color blue. Ofna double arm servo horn is constructed of anodized blue aluminum spline adapters for universal applicationrequiresstandard sized servo. Give your all a bit more power, agility and better handling.

 

3Racing 3R3RAC-HKD30LB 30 mm Aluminium Double Servo Arm For Ko PropoSanwa - Light Blue

3Racing #3R/3RAC-HKD30/LB 3.0 mm Aluminium Double Servo Arm For Ko Propo/Sanwa – Light Blue

3Racing #3R/3RAC-HKD30/LB 3.0 mm Aluminium Double Servo Arm For Ko Propo/Sanwa – Light Blue - Color blue. Takes 7 to 15 business days by standard airmail shipping 80% of packages arrive within 10 business days most packages ship within 12 hours please allow 1 extra day if order is placed during the weekend. Give your all a bit more power, agility and better handling. Expediated shipping is shipped by dhl or fedex arrives in about than 2-5 days major cities will receive orders earlier. Fits most rc cars and trucks lightweight upgrade instantly enhances overall performance in handling and durability.

 

HobbyKing CNC Alloy Double Servo Arm X-Long HITEC

HobbyKing CNC Alloy Double Servo Arm X-Long (HITEC)

HobbyKing CNC Alloy Double Servo Arm X-Long (HITEC) - Applications standard servos. Cnc machined aluminum alloy anodic oxidation treatment on surface, artistic while anti-corrosion. The m3 internal threads make it easier to fix ball head, linkage stopper, or directly connect the wires which connect the servo. Coming with 25 teeth, compatible with futaba servo. The sizes of double arm 3in.

 

HobbyKing CNC Alloy Double Servo Arm X-Long Hitec

HobbyKing CNC Alloy Double Servo Arm X-Long (Hitec)

HobbyKing CNC Alloy Double Servo Arm X-Long (Hitec) - Motor power choice(auw, or flying weight of model choice) 1) vintage types many non-aerobatic indoor flyers -50w~70w per 1lb 2)trainers, gliders and high wing scale -70w~100w per 1lb 3)sport flyer with general aerobatic performance -100w per 1lb 4)warbirds -120w~150w per 1lb 5)multi engined models -100w per 1lb (thrust from multiple props gives in effect, more than 100w per 1lb performance) 6)edf jets -150w~200w per 1lb 7)3d, f3a and high performance models, 150w~200w per 8538lb. Esc choice look at the max amps figure given by the motor manufacturer in the data section and generally add 25% headroom, so, if a motor is rated to 15a, then choose at least an 18a esc, better still a 20a and so on if you are using a 4s lipo, that the esc is rated for 4s voltage also look at bec rating, if the servo count is over 8541, then consider purchasing an esc with a high amp rated sbec, or a seperate ubec, opto type esc’s (they have no bec, keeping the esc seperate from rx suply). Lipoly voltage choice generally, to keep lipo’s in good order, try and keep max amps to around 50~60% of the capacity/c rating of the lipoly pack 1)up to 50w1s~2s 2)up to 100w2s~3s 3)100w up to 500w 3s 4)500w up to 800w4s (this is the 040~046 glow equivalent range favoured by many club flyers) 5)800w up to 1000w5s 6)900w up to 1500w6s (this is the 060~090 ic equivalent range) 7)8s~8547s packs are for very large and generally specialised models. Here is a rough guide to choosing the electric power train needed for various model types, bear in mind that over-powering is fine but the penalty is additional weight, and a good model is one that is balanced in terms of power, flying weight and build quality customer service is our top priority, and while some issues are beyond our control, we do our best to ensure your transaction exceeds your expectationsshould you have an issue, please contact us via messages and we are always there. Motor choice, kv or rpm per volt if you are used to ic, the simple analogy is to treat low kv motors as 4 stroke engine equivalents and mid-high kv motors as 2 stroke engine equivalents, if you are not used to ic then we can give you some examples example 1trainer/sport model, 1lb auw, we want 100w motor (3s 20c lipoly) mid kv for general flying, probably around 1200kv~1400kv, so around 8″ prop example 2warbird/scale model, 1lb auw 8657w motor, kv choice,.