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OFNA Racing OB4 RTR User Manual

Page 17

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5 x 11mm
Ball Bearing x1

37130

5 x 11mm
Ball Bearing x1

37430

2 x 8.8 Pin x1

5 x 11mm
Ball Bearing

37430

2 x 8.8
Pin

37400

Brake Disc
Mount

38055

39451
2 Speed
Main Shaft

Plastic
Washer

39415

2 x 8.8
Pin

37400

37280
15T Pulley

5 x 11mm
Ball Bearing

37430

Pulley Mount

38050

* Insert the 2x8.8 pin into shaft
and keep the pin in the center of
the pulley.

3 x 10mm
Flat Head
Tapping Screw

3 x 10mm
Flat Head
Tapping Screw

38050
Pulley
Mount

39413
Main Shaft
Bearing Bulkhead

3 x 10mm
Flat Head
Tapping Screw x4

25

26

ASSEMBLY OF THE MAIN SHAFT

ASSEMBLY OF THE MAIN SHAFT ONTO
CHASSIS

* Insert the rear belt onto
pulley before assembly.

OPTION PARTS: 37943
Alum. Pulley
Mount

OPTION PARTS: 37943
Alum.15T
Pulley

OPTION PARTS: 39464
Alum. Main shaft
ball bearing block

Use the LONGER Disc Mount found in bag #5 or
plastic tree #39415. There may be a similar part that
is shorter and not correct. This is due to the 2-speed
shaft and dual brake configuration.

Figure not shown in Dual
Brake OFNA
configuration!

Figure not shown in Dual
Brake OFNA
configuration!

Figure not shown in Dual
Brake OFNA
configuration!

37400

Do Not Use!

• If assemblied correctly no shims
or spacers are need.

OPTIONAL ASSEMBLY OF THE DUAL BRAKE CAM SHAFT
AND BRAKE DISK

38030
Brake Cam
Shaft

39407
Brake Pad

3 x 15mm
Screw

0.5mm

Leave

39413
Main Shaft
Bulk Head

*Insert brake disk between
two brake pads.

37929
Carbon Brake Disks

3 x 15mm Screw x2