INTRODUCTION
1/15/2003
The “Super Universal Mounting System” is the result of several attempts to make motor mounts-for Electric motors. As I worked with different motors, on different models, I found that most of the parts were the same. Only the front plate would change if the motor mounting bolt pattern was different, or, the extension rod lengths would change if the model was different.
I thought it would make sense to sell only the parts that the modeler needs, instead of an entire package. So, if you already own a “SUM” mount, and wish to change to a different motor, you only have to buy the front plate that will fit your new motor.
Another example is if you wish to put your motor, and mounting system into another model, you probably only have to buy different length extension rods, and maybe a spacer package!
All components are machined from 6061-T6 Aluminum. Nothing cast. All of the screws for the mount have 6-32 threads.
The first design is particularly for the Hacker B-40 with Heat Sink. There is only one front plate and one back plate-for this mount. You also use the M2.5 Hardware package. The extension rods and the spacer package are the same for both designs.
The second design will fit virtually all of the motors and gearbox combinations out there.
There are three front plates to choose from. (Frontplate.PDD)
Far left. – Used primarily for Hacker B-50 (No extra holes-very strong)
Center – Fits Astro Gearbox (Also very strong)
Right – Universal Front Plate. Fits Hacker B-50, Mega, Axi, Mec Gearbox, Robi Gearbox, Model Motors Gearbox and more.
The extension rods are from extruded bar. Machined clearance on the side of the rods allows for additional clearance-and offset motors (from gearbox). They also have a 6-32 tapped hole in both ends. They are available in lengths of 2½”, 3”, 3½”, & 4”. Special lengths available upon request.
Spacer.pkg.PDD We have a spacer package available that includes three of each of the following: 1/4, 1/8, & 1/16 inch long aluminum spacers. Used for fine adjustment of extension rods.
We also have hardware packages available. The M3 and the M2.5
M3 Contents: 4pcs 6-32 x 1 SHCS
6pcs 6-32 x ½ FHCS
3pcs 6-32 x ¾ FHCS
4pcs M3 x 10 SHCS
4pcs 6-32 Tee Nuts
M2.5 Contents (for B-40 Mount)
3pcs 6-32 x 1 SHCS
6pcs 6-32 x ½ FHCS
3pcs 6-32 x ¾ FHCS
3pcs M2.5 x 10 SHCS
3pcs 6-32 Tee Nuts
Choose the Front Plate that fits your motor.
Use the following to determine the length of the extension rods:
Measure from the back of the propeller to the mounting face of your motor. “A”
Determine the distance from the firewall, to the back of the propeller. (Most ARF instructions have this dimension) “B”
“B” minus “A” = Distance from firewall to motor mounting face.
Now subtract 1/8” (thickness of back plate) and you have your rod length (if not even ½” increment, round to next shorter rod, and buy a spacer package)
Comp.PDD Step 1: Mount the front plate to the motor using the hardware package. Be sure that the countersinks for the flat head screws are on the correct side. (See picture)
Assylowereods.PDD Step 2: Assemble the two lower rods to the back plate – as shown. Be sure that the countersinks for the flathead screws are on the correct side, and that the flats are in a position to clear the motor when installed. When (spacers3.PDD) using spacers, be sure that you use the 6-32 x ¾ FHCS to maintain proper thread engagement.
Lastrod.PDD Step 3: Assemble the motor to the two rods and the back plate then assemble the last rod as required.
Firewallinstall.PDD Step 4: Mount motor and assembly to the firewall of your model much as you would a glow motor. Using the four 6-32 x 1 SHCS and four 6-32 Tee Nuts.