RJ Speed Spec Modified User manual

2014 SPEC MOD KIT LESS ELECTRICS
THANKS FOR BUYINGTHE RJSPEED SPEC MODIFIED KIT. IT’S INTENDED TO BE A STEP UP FROM OUR R/C LEG-
ENDS CARS AND HAS A SIMPLE ADJUSTABLE REAR SUSPENSION.. YOU SHOULD BE ABLE TO ASSEMBLE THE KIT
AND INSTALL THE ELECTRICS IF YOU READ THE DIRECTIONS, LOOK AT THE PICTURES AND THE EXPLODED VIEW
DRAWING. YOU WILL NEED A 1/4” WRENCH OR SOCKET, A SMALL PAIR OF PLIERS, AND A 7/16 SOCKET WRENCH
FOR THE BODY POSTS AND THE DIFF NUT. HEX WRENCHES ARE INCLUDED FOR THE SOCKET HEAD SCREWS IN-
CLUDED IN THE KIT.
YOU WILL NEED A 2 CHANNEL RADIO CONTROL WITH 1 SERVO, A 540 SIZE MOTOR, BATTERY, ESC THAT WILL
WORK WITH THE MOTOR YOU HAVE CHOSEN, SERVO SAVER FOR THE BRAND OF SERVO YOU HAVE, AND PAINT
FOR THE LEXAN BODY.
OPEN EACH KIT BAG AS NEED TO KEEP FROM MIXING SCREWS AND HARDWARE THAT LOOK ALIKE AND DO NOT
LOSE EXTRA HARDWARE THAT MAY BE NEEDED LATER IN THE BUILD.
THIS CAR IS BUILT FOR LEFT TURN OVAL RACING ,BUT MAY BE SET UP FOR LEFT AND RIGHT TURNING BY RE-
PLACING THE OFFSET FRONT ARMS WITH 5247 EQUAL LENGTH ONES AND CHANGING THE DIFF TO A 5309 DIFF
HUB AND A 5311 OR 5314 SET SCREW HUB.
STEP 1 OPEN BAG M1 AND M1A ATTACH TWO 5245
CHASSIS SPACERS TO EITHER 5074 CHASSIS FRONT
WITH 5-40 X 3/8” WITH THE HEX WRENCH AS SHOWN.
THE SLIGHTLY LONGER ONES (1/2”)ARE FOR THE BODY
POSTS. HINT –THREAD THE HOLES IN ALL OF THE
CHASSIS SPACERS WITH A 4-40 TAP IF YOU HAVE ONE
AVAILABLE TO MAKE THE SCREWS HOLD BETTER.
STEP 2 OPEN BAG MIB ATTACH THE 5076 FLEX PLATE
TO THE CHASSIS SIDE WITH TWO 4-40 X 3/8” SCREWS
FROM THIS BAG. KEEP THESE SCREWS SEPARATE FROM
THE ONES IN MIA. PUSH THE TABS FULLY INTO THE
SLOTS AND THREAD THE SCREWS IN CAREFULLY. DO
NOT OVER TIGHTEN THEM.
STEP 1
STEP 2
STEP 3 OPEN BAG M1C ATTACH THE 5065 NERF
BAR WITH TWO 1 1/4 “LONG SCREWS AND TWO 3/4”
LONG SPACERS. INSERT THE SCREWS THROUGH THE
CHASSIS, SPACERS AND INTO THE NERF BAR.
STEP 4 INSERT THE 5246 FRONT AXLE PLATE FROM
BAG M1E, THE 5062 BATTERY TRAY , AND THE 5077
BODY MOUNT INTO THE CHASSIS SIDE. MAKE SURE
THEY ARE ALL THE WAY INTO THE SLOTS AND IN THE
DIRECTION SHOWN IN THE STEP 4 PICTURE.
STEP 3
STEP 4
1

STEP 5 SLIDE THE OTHER 5074 CHASSIS FRONT ONTO
THE TABS AND RETAIN WITH TWO 3/8 CHASSIS SPACER
SCREWS AND THE 5076 FLEX PLATE WITH THE THINNER 3/8
SCREWS FROM IT’S BAG.
STEP 6 ATTACH 3- 5245 CHASSIS SPACERS TO ONE OF
THR 5075 CHASSIS REARS.
STEP 5 STEP 6
STEP 7
STEP 7 ATTACH THE CHASSIS REAR ASSSEMBLY TO THE
FLEX PLATE WITH TWO SCREWS FROM THE FLEX PLATE
BAG. SLIDE THE REAR MOUNT INTO THE SLOT AT THE TOP
OF THE CHASSIS REAR .
STEP 8
STEP 8 ATTACH THE OTHER REAR CHASSIS WITH 3
SPACER SCREWS AND TWO FLEX PLATE SCREWS.
AS BEFORE, MAKE SURE THE TABS IN THE FLEX PLATE
ARE ALL THE WAY IN AND DO NOT OVERTIGHTEN THE
SCREWS. IF YOU SHOULD HAVE A PROBLEM STRIPPING
ANY OF THE FLEX PLATE SCREWS, OUR 7030 SCREWS
AS USED IN THE CHASSIS SPACERS ARE SLIGHTLY LAR-
GER IN DIAMETER AND WILL THREAD IN TIGHTER.
STEP 9 ATTACH TWO OF THE BODY POSTS TO THE
BODY MOUNT WITH TWO 1/2” SCREWS AND TWO 1/8
THICK SPACERS. ALIGN THE BODY CLIP HOLES IN THE
DESIRED DIRECTION BEFORE TIGHTENING.
STEP 9
STEP 10 ATTACH THE 5066 FRONT ARM (SHORTER ONE) ON TOP
OF THE FRONT AXLE PLATE WITH A 7025 1/4” SCREW IN THE FRONT
HOLE FROM THE BOTTOM AND A BODY POST WITH A 1/2” SCREW
THROUGH BOTH PARTS.
2
STEP 10

STEP11 INSTALL THE LONGER 5066 ARM UNDER THE
FRONT AXLE PLATE WITH A 1/4” SCREW IN THE FRONT
HOLE FROM THE TOP AND THE BODY POST WITH A 1/2”
SCREW.
WE SET UP ALL OF OUR CARS LIKE THIS DURING TEST-
ING AND IT PROVED TO PROVIDE MORE POSITIVE STEER-
ING BY PRELOADING THE RIGHT FRONT IN THIS WAY IN-
STEAD OF HAVING TO ADD MORE PRELOAD TO THE LEFT
REAR DAMPER FOR BETTER LEFT TURNING.
STEP 11
STEP 12 ATTACH THE BUMPER UNDER THE FRONT
AXLE PLATE WITH TWO 1/4” SCREWS. WE USED THE
SECOND HOLE FROM THE REAR AND MOUNTED THE
BODY ABOUT FLUSH WITH THE FRONT OF THE
BUMPER. STEP 12
STEP 13
STEP 13 OPEN BAG M1D THREAD THE TWO 2/56 BALL
STUDS INTO THE BODY MOUNT PLATE.
STEP 14 ATTACH THE TWO LARGER SET COLLARS ON
TOP OF 3/32 THICK NYLON SPACERS . ATTACH TO THE
REAR BRACE WITH 1/4” CAP SCREWS. ALIGN THEM SO
THE HOLES IN THE COLLARS POINT TO THE BALL
STUDS. YOU CAN ADJUST AS YOU PUT THE DAMPER
ROD IN PLACE. STEP 14
STEP 15 ASSEMBLE TWO DAMPER RODS BY THREAD-
ING THE BALL CUPS ONTO THE THREADED ENDS , THEN
SLIDING A SMALL COLLAR, SPRING, AND SILICONE TUBE
ON EACH ONE.
STEP 15
STEP 16 INSERT EACH DAMPER ROD THROUGH THE
COLLAR ON THE REAR BRACE AND SNAP THE BALL
CUP ONTO THE BALL STUD ON THE BODY MOUNT. ADD
THE OTHER SILICONE TUBE AND SET SCREW COLLAR
ON EACH SIDE. ADD THE SETSCREWS IN ALL FOUR
COLLARS. SLIDE THEM AGAINST THE SPRINGS AND
SILICONE TUBES AND TIGHTEN LIGHTLY. YOU CAN
ADJUST THEM MORE WHEN YOU GET THE CAR READY
TO RUN.
STEP 16
3

STEP 17 OPEN BAG L1B THREAD A 7206 THINNER NUT
ONTO EACH 5377 KINGPIN (SMOOTH ONE), INSERT IT
THROUGH THE FRONT ARM AND ATTACH WITH A 7207 LOCK-
NUT . HINT: BEFORE INSTALLING, HOLD THE KINGPIN BY
THE THREADED END IN A HAND DRILL AND USE VERY FINE
SANDPAPER, THEN METAL POLISH TO MAKE THE SURFACE
OF THE KINGPIN SMOOTHER.
STEP 17
STEP 18
STEP 18 PRESS A 5364 STUB AXLE PART WAY
INTO EACH 5351 STEERING BLOCK AS SHOWN, ADD
A 5221 E-CLIP AND PRESS IT IN THE REST OF THE
WAY. MAKE SURE THE HOLE IN THE STEERING
BLOCK IS CLEAN. HINT: RUN A 1/8 DRILL THROUGH
THE HOLE AND/OR TRIM THE OUTER EDGES OF THE
HOLES WITH A SHARP HOBBY KNIFE. MAKE SURE
THEY SLIDE FREELY ON THE KINGPINS. ADD A LIT-
TLE LIGHT GREASE OR SILICONE LUBE, INSTALL
THE STEERING BLOCKS, THEN THE SPRINGS, WASH-
ERS, AND E-CLIPS
STEP 19 OPEN BAG G2
PRESS A DIFF BALL INTO
EVERY OTHER HOLE IN
THE OUTER ROW OF
HOLES IN THE GEAR,
THEN LUBE THE BALLS
WITH LIGHT GREASE OR
SILICONE.
STEP 20 PRESS AN ADAPTOR INTO EACH SIDE OF THE
CHASSIS ASSEMBLY AND PRESS AN OILITE BUSHING
INTO EACH ONE. MAKE SURE THE ADAPTORS ARE IN THE
SAME WAY (WITH THE HOLE UP OR DOWN).
STEP 21 SLIDE A THIN WASHER ON THE AXLE AND IN-
SERT IT THROUGH THE REAR BUSHINGS. YOU MAY
HAVE TO MOVE IT AROUND A LITTLE TO GET IT
THROUGH THE FIRST TIME. HINT: GET YOUR AXLE
THROUGH THE BUSHINGS, ATTACH A DRILLTO ONE
END, LUBE THE BUSHINGS WITH LIGHT OIL AND RUN
IT FOR A WHILE TO BREAK THE BUSHINGS IN TO THE
SURFACE OF THE AXLE. MAKE SURE TO KEEP IT
OILED. AND SLIDE IT BACK AND FORTH A SMALL
AMOUNT WHILE RUNNING. ADD THE OTHER SPACERS
AND THE SET SCREW HUB. HINT: TIGHTEN THE SET-
SCREW LIGHTLY, REMOVE THE HUB AND GRIND OR
FILE A FLAT SPOT WHERE THE SET SCREW HITS THE
AXLE SO THE HUB WON’T SPIN ON THE AXLE UNDER
LOAD
STEP 20
4

STEP 22 ASSEMBLE YOUR DIFF AS FOLLOWS:
5752 DRIVE RING, GEAR WITH DIFF BALLS , 2ND DRIVE RING, 5740
ALUMINUM ADAPTOR, NYLON HUB, THIN FLAT STEEL WASHER, BLUE
BALL CAGE, 2 THIN FLAT WASHERS, 5736 SPRING WASHER AND 7218
DIFF LOCKNUT. MAKE SURE THAT THE DRIVE RINGS ARE IN PLACE
AND TIGHTEN THE NUT UNTIL IT ‘S HARD TO MAKE THE GEAR SLIP.
YOU CAN ADJUST LATER WITH THE CAR RUNNING.
HINT: YOU CAN SCRATCH THE INSIDE SURFACE OF THE HUB
WHERE IT TOUCHES THE ALUMINUM ADAPTOR A LITTLE WITH
COARSE SANDPAPER AND USE A LITTLE SUPER GLUE TO KEEP THE
HUB FROM SLIPPING ON THE ADAPTOR. ALSO TRIM AROUND THE
EDGE OF THE HOLE IN THE OUTSIDE OF THE HUB TO MAKE SURE
THE BALL THRUST BEARING SITS FLAT.
STEP 22
STEP 23 THIS PICTURE SHOWS THE 2424 BODY
POST NUTS INSTALLED, THE 2530 REAR TIRES AT-
TACHED WITH TWO SCREWS EACH AND THE 2520
FRONT TIRES WITH THE 5457 BUSHINGS PRESSED
IN AND INSTALLED ON THE FRONT AXLES AND RE-
TAINED WITH 7207 LOCKNUTS.
IT WILL BE EASIER TO INSTALL THE TIRES AFTER
YOU INSTALL THE MOTOR, BATTERY , AND RADIO
GEAR YOU HAVE PURCHASED.
WE WILL SHOW ONE WAY TO MOUNT THE ELEC-
TRICS AND RADIO GEAR, BUT YOU MAY WANT TO
MAKE CHANGES BASED ON WHAT GEAR YOU HAVE
PURCHASED. YOU MAY ALSO WANT TO SET UP
YOUR STEERING LINKAGE DIFFERENTLY DEPEND-
ING ON THE SIZE OF YOUR SERVO.
YOU SHOULD BE ABLE TO PAINT,TRIM, AND MOUNT
YOUR BODY NOW , ALSO.
STEP 24 YOU CAN MOUNT YOUR STEERING SERVO
WITH FOAM TAPE INCLUDED IN THE KIT, SCREWS IF
IT HAS THE RIGHT TYPE OF MOUNTS , OR INSTALL
MOUNT POSTS ON THE FRONT AXLE PLATE AND
SCREW THE SERVO TO THEM. YOU SHOULD SET
YOUR SERVO ON THE FRONT AXLE AND HOOK UP
THE LINKAGE TO SEE IF YOU WILL NEED TO BEND
THE LINKAGE WITH THE SIZE OF SERVO YOU HAVE.
THE OUTPUT SHOULD BE NEAR THE CENTER OF THE
CHASSIS. WE SHOW A SMALL SERVO WITH THE ARM
SETUP OR DOWN. ONE WAY REQUIRED BENDING OF
THE LINKS AND THE OTHER DID NOT. MAKE SURE
THAT YOU CHECK THE MOVEMENT OF THE LINKGE
BEFORE YOU ATTACH THE SERVO, ESPECIALLY IF
YOU ARE USING THE TAPE.
STEP 25 REMOVE THE DAMPERS AS NECESSARY AND IN-
STALL THE 540 SIZE MOTOR YOU HAVE CHOSEN WITH TWO
SCREWS AND WASHERS FROM THE M3 BAG. USE THE IN-
CLUDED PINION GEAR OR YOUR OWN IF YOU NEED A DIFFER-
ENT SIZE. LINE THE PINION UP WITH THE DIFF GEAR AND SE-
CURE WITH THE SET SCREW. MAKE SURE THE SET SCREW
HITS ON THE FLAT OF THE MOTOR SHAFT SO IT WILL NOT SLIP.
ADJUST THE MOTOR UNTIL THERE IS A VERY SMALL AMOUNT
OF PLAY BETWEEN THE GEARS. ROTATE THE AXLE A COUPLE
OF TIMES AND RECHECK THE GEAR MESH BEFORE TIGHTEN-
ING THE SCREWS. THE LARGE PINION GEAR (40T) YOU SEE IN
THE PICTURE WAS USED IN TESTING ON A LARGE CARPET
OVAL. IT IS NOT INCLUDED IN THE KIT. 5

MOUNT THE REST OF YOUR ELECTRON-
ICS ON THE TOP OF YOUR BATTERY TRAY
AS NECESSARY WITH THE SERVO TAPE IN-
CLUDED. THE PICTURE SHOWN IS OF ONE
OF OUR TEST CARS. WE MOUNTED THE RE-
CEIVER FORWARD SO THE WIRES FROM
THE ESC AND SERVO WILL REACH. THE ESC
CAN BE MOUNTED ON THE TOP OF THE
TRAY, BUT IN THIS CASE WE PUT IT UNDER
THE TRAY TOWARD THE BACK TO GET THE
WEIGHT LOWER.
MOUNT YOUR BATTERY BELOW THE TRAY
TO GET THE HEAVIEST WEIGHT LOW. WE
RECOMMEND A VELCRO STRAP LIKE YOU
FIND AT YOUR LOCAL HOBBY SHOP OR
HOME STORE. WE USED A VELCRO STRIP
BETWEEN THE BATTERY AND THE UNDER-
SIDE OF THE TRAY TO KEEP THE BATTERY
FROM SLIDING AND A VELCRO STRAP
AROUND BOTH. THIS ASSURES THAT THE
BATTERY WILL STAY IN PLACE. IF YOU
ARE GOING TO USE A LIPO BATTERY
AS SHOWN, MAKE SURE YOU REMOVE
IT FROM THE CAR AND PUT IT INTO A
LIPO SAFE BAG TO CHARGE OR DIS-
CHARGE IT.
NOTE ALSO THAT WE SLID THE BATTERY
TO THE LEFT SIDE AND USED SOME SCRAP
FOAM TO KEEP IT THERE. (NOT SHOWN).
MAKE SURE TO ROUTE YOUR WIRING SO
THAT IT WILL NOT GET TANGLED IN THE
WHEELS OR DRAG ON THE TRACK
NOTE ALSO THAT WE USE THE OPTIONAL
LEGENDS STEERING RODS ON THIS TEST
CAR.
NOW YOU NEED TO CHARGE YOUR BATTERY , PLUG EVERTHING IN, TURN ON YOUR TX AND CAR AND GO
THROUGH THE MANUFACTURER’S RECOMMENDED PROCEDURES FOR SETTING UP YOUR RADIO GEAR INCLUDING
THE THROTTLE AND STEERING. MAKE SURE THE DIRECTIONS ARE CORRECT, THAT THE STEERING OR THROTTLE
IS NOT REVERSED AND YOU GET THE AMOUNT OF THROW NEEDED. NOW INSTALL YOUR TIRES AND BODY AND GO
OUT AND HAVE FUN RACING!

5351 5228 5221 5377
7206
5364
5066 7207
5065
2426
5080
5246
5062
5245
5074
5076
5077 5078
5066 7026
7030 5730 5752
5581
5751
5740 5310 5735
5736
72185752
5310 STD. DIFF HUB 5313 SETSCREW HUB 5581 DIFF GEAR 81T 5735 THRUST BEARING 5736 CONE WASHER (2) 5740 ADAPTOR 5730 DIFF AXLE 5751 DIFF BALLS (8) 5752 DRIVE RINGS (PR)
7025
7031
5079
2014 SPEC MODIFIED KIT
1059 SPEC MODIFIED BODY 2403 BODY CLIPS (12) 2426 1.5 “ BODY POST (PR) 5062 BATTERY TRAY 5065 NERF BAR (PR) 5066 OFFSET FRONT ARMS (PR) 5074 CHASSIS FRONT (PR) 5075 CHASSIS REAR (PR) 5076 FLEX PLATE 5077 BODY MOUNT 5078 REAR BRACE 5079 DAMPER ASSY (PR) 5080 BUMPER 5188 AXLE HT. ADJUSTERS(4) 5221 E-CLIP (6) 5228 FRONT SPRING (PR)
5076
5245 CHASSIS SPACER (6) 5246 3 PC FRONT AXLE 5351 STEERING BLOCK (PR) 5364 STUB AXLE (PR) 5377 KING PIN (PR) 5452 REAR BUSHING (PR) 5457 FRONT BUSHING (4) 7025 4-40 X 1/4 CAP SCREW 7026 4-40 X 3/8 CAP SCREW 7030 5-40 X 3/8 CAP SCREW 7031 5-40 X 1/2 CAP SCREW 7150 4-40 X 1/8 SET SCREW 7160 10-32 X 1/4 SET SCREW (4) 7206 5-40 JAM NUT 7207 5-40 LOCK NUT
7030
7025