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RC-TEK

 

SJM325-C PRO SE Reference Manual 

 
 

Thank you for your purchase of the innovative SJM325. In order to ensure proper operation of this high performance helicopter in a safe manner, please read 

this reference manual completely before attempting to fly to the SJM325. Additionally, please observe all flying rules and flight precautions while fully 

understanding the capabilities and limits of the SJM325. Be sure to retain this manual for future reference, routine maintenance, and tuning.  

 
 

Assembly Tip: Use CA or loctite (#242) on all important screws throughout the SJM325 before fastening each screw. 

 

 

 

Important Notes:  

 

 

The helicopter is recommended for skilled intermediate to advanced RC helicopter flyers.  

 

Make sure to read and follow all the instructions in this manual, including all accessories.  

 

Should any uncertainty arise, please consult with an experienced RC helicopter hobbyist and/or instructor BEFORE any attempt is made to fly this 
helicopter.  

 

Always find an experienced and qualified secondary party to assist pre-flight inspection.  

 

Make sure the proposed flight vicinity is in an open space; free of crowds, obstacles, and buildings. Failure to abide may cause accidental and 
potentially hazardous encounters.  

 

Any introductory flight should incorporate only basic maneuvers (hovering, linear ascending, and descending) until the stick feel is mastered.  

 

Do not operate the stock SJM325 325mm plastic blades above 3100RPM and/or the RC-TEK 325mm fiberglass main blades above 
3300RPM.  

 
 

Precautions: 

 

 

Fly only in safe areas, away from other people. Do not operate RC helicopters within the vicinity of homes or crowds of people. RC helicopters are 
prone to accidents, failures, and crashes due to a variety of reasons including, lack of maintenance, pilot error, and radio interference. Pilots are 
responsible for their actions and damage or injury occurring during the operation or as of a result of RC helicopter models. 

 

 

Recommended Equipment NOT included in the SJM325 base kit: 

 

 

Radio Control System – 6 channels or more CCPM helicopter compatible transmitter or equivalent 

 

Receiver – 6 channels or more 

 

Gyro – RC-TEK 700/800 series, Futaba GY401, Logictech2100T 

 

Servos – (4) Servos – Hitec HS-81/85, Futaba S9650/S9257 or equivalent 

 

Battery – (1) 3S1P Li-Po Battery (2200mA 25C or more recommended) 

 

Copyright © 2008 RC-TEK/SGB Enterprises LLC. All Rights Reserved.

Summary of Contents for SJM325-C Pro SE

Page 1: ...lt 2 5mm x 240mm Tail Rotor Disk Diameter 150mm Using 58mm Tail Blades Main Shaft Size 6mm x 136mm Tail Rotor Shaft Size 3mm x 45mm Tail Boom Diameter External 15mm Main Drive Gear M0 6 125T Main Tail...

Page 2: ...t vicinity is in an open space free of crowds obstacles and buildings Failure to abide may cause accidental and potentially hazardous encounters Any introductory flight should incorporate only basic m...

Page 3: ...copter If no resulting movement is noticed when moving the directional stick do not attempt flight as either the helicopter or the remote control may be defective 5 Before any test flight it is recomm...

Page 4: ...and understanding Regular maintenance is required to keep the SJM325 helicopter in optimal and safe flying condition This helicopter requires precise configuration of the components and settings to be...

Page 5: ...elt from stretching or wearing out Check belt tension regularly and check for the wear on the teeth Replace as necessary Linkage Rods and Connecting Parts During assembly take special care to keep the...

Page 6: ...ile flying or after any hard landings Damaged tail blades can induce vibration Closing Reminder Maintaining and taking care of your SJM325 on a regular basis will result in the helicopter providing yo...

Page 7: ...of a short circuit initiated by moisture heat or blunt physical force Treat all batteries with care and safety in mind 5 This helicopter frame structure has a maximum revolving blade speed rating of...

Page 8: ...Y Specification No Part No Discription Q TY Specification 1 AL6016 Sliding shaft set 1 3 SJ80001 Tail sliding shaft screw 1 M1 6 10mm 2 SJ50006 Tail angel adjusting ball link 2 H16 4 SJ80001 Tail slid...

Page 9: ...l blade 2 6 SJ10010 Bearing 4 2 6 2 5mm 12 SJ20006 Cap screw 2 M2 16mm 7 AL6019 Tail blade clincher 2 13 AL6041 Tail blade clincher balance board 4 2 1 5 9 5mm 8 AL5020 Tail blade Center 1 14 AL6041 T...

Page 10: ...3...

Page 11: ...ard underlay stick 1 2 4 5 13mm 31 SJ70001 Nut 1 M2 20 SJ10015 Frange bearing 1 3 7 3mm 32 SJ20004 Cap screw 2 M2 8mm 21 CL5001 Underlay 1 3 33 CF6011X CF vertical parallel blade 1 22 CL5001 Tail shaf...

Page 12: ...3mm 45 SJ20005 Cap screw 2 M2 10mm 40 SJ20009 Set screw 2 M3 3mm 46 AL6036P Underlay 2 2 41 AL5015 Tail angel adjusting set 1 47 SJ20004 Cap screw 1 M2 8mm 42 SJ20004 Cap screw 1 M2 8mm 48 AL5048 Link...

Page 13: ...6...

Page 14: ...6036P Underlay 2 2 61 SJ20004 Cap screw 1 M2 8mm 53 SJ40001 Roundhead screw 2 M1 6 6mm 62 SJ30005 Countersunk screw 1 M2 8mm 54 AL6023 Connecting rod set 1 63 AL5048 Linkage ball 1 55 AL6022 Tail boom...

Page 15: ...8...

Page 16: ...ecification 68 AL6011 Flybar stand 1 72 SJ30005 Countersunk screw 2 M2 8mm 69 AL6012P Flybar copper ball 1 73 AL5048 Ball link 2 70 HS6001X Flybar rod 1 25 240mm 74 AL6012P Flybar copper ball underlay...

Page 17: ...cation 76 SJ50004 Ball link 2 81 CF6039 Flybar paddle 2 77 HS6005P Lingkage rod 2 2 10mm 82 SJ50005 Ball link 2 78 AL5004 Flybar mixing arm set subassembly 2 83 HS6005P Linkage rod 2 2 32mm 79 AL6044...

Page 18: ...100 SJ10017 Trust bearing 2 90 SJ40001 Roundhead screw 2 M1 6 6mm 101 AL6007 Main blade clincher 2 91 HS6005P Linkage rod 2 2 8mm 102 SJ10003 Bearing 2 4 7 2 5mm 92 SJ50005 Ball link 2 103 AL6007 Mai...

Page 19: ...NO part No Discription Q TY Specification No part No Discription Q TY Specification 112 SJ20005 Cap screw 2 M2 10mm 114 AL6036P Underlay 2 2 113 SJ10010 Bearing 4 2 6 2 5mm 12...

Page 20: ...n No part No Discription Q TY Specification 115 AL6014P Swash plate 1 119 AL5048 Linkage ball 3 116 SJ50004 Ball link 3 119 SJ30005 Countersunk screw 3 M2 8mm 117 HS6005P Linkage rod 3 2 20mm 119 SJ70...

Page 21: ...14...

Page 22: ...ervo mount 1 127 SJ20003 Cap screw 4 M2 5mm 128 SJ70001 Nut 4 M2 129 SJ20005 Cap screw 2 M2 10mm 130 AL3032P Horse link 2 131 SJ20003 Cap screw 3 M2 5mm 132 SJ70001 Nut 3 M2 133 SJ20004 Cap screw 2 M2...

Page 23: ...47 SJ20005 Cap screw 1 M2 10mm 148 SJ20004 Cap screw 2 M2 8mm 149 AL6036P Underlay 2 2 5 150 CF6017 Swash plate fixing device 1 151 AL3026P Underlay 1 2 5 13 6 5mm 152 AL3026P One way bearing stand 1...

Page 24: ...03 Anti loose nut 1 M3 160 SJ30005 Countersunk screw 1 M2 8mm 160 AL5048 Linkage ball 1 160 SJ70001 Nut 1 M2 161 SJ50004 Ball link 1 H20 162 HS6005P Linkage rod 1 163 SJ50004 Ball link 1 H20 164 SJ200...

Page 25: ...18...

Page 26: ...NO part No Discription Q TY Specification 165 SJ20005 Cap screw 2 M2 10mm 19...

Page 27: ...10mm 174 SJ70001 Nut 4 M2 168 AL6040 Beem linkage set 2 175 SJ50004 Ball link 4 H20 169 SJ20004 Cap screw 2 M2 8mm 176 SJ20003 Cap screw 4 M2 5mm 170 CF6007P CF Battery side board 2 177 CF6004P Tail b...

Page 28: ...link 2 184 AL6037 Landing skid link 2 185 SJ50002 Landing skid rubber 2 186 SJ20004 Cap screw 4 M2 8mm 187 SJ70001 Nut 4 M2 188 SJ20004 Cap screw 4 M2 8mm 189 SJ20004 Cap screw 2 M2 8mm 190 SJ20004 Ca...

Page 29: ...No Discription Q TY Specification 195 CF6006P CF Battery board 1 199 AL6042 Canopy mount 1 196 SJ20003 Cap screw 4 M2 5mm 200 SJ30012 Ball link screw 2 M2 10mm 197 AL3029 Canopy device 4 201 AL5048 L...

Page 30: ...NO part No Discription Q TY Specification 202 SJ20004 Cap Screw 4 M2 8mm 23...

Page 31: ...24...

Page 32: ...main blade pitch the SJM helicopter airframe and main blades should be facing TOWARDS AWAY from you Due to the 3 degrees of forward tilt on the SJM helicopter do not attempt to setup or adjust the pi...

Page 33: ......

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