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The PB Racing model car company produced the Mustang X3 quite some time ago and we have decided to republish the manual on-line as a reference. |
This will help both those who still have one of these cars as well any other modeller who is interested in cars from the past. |
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| Centre Drive With Two Speed Transmission |
Pack No. PB32C
Fit the 6mm x 13mm bearings (22/315) to the plummer-blocks (43/245) using a vice to ensure that the bearings are fully home.
Fit the second gear clutch cam (3/329) to the layshaft (43/246) so that the M4 x 5mm grub screw (22/284) is correctly located on a flat on the shaft and so that the cams is 74.8mm from one end of the layshaft with the recessed side facing the short (74.8mm) end. |
Bigger Version |
| Use high strength thread locking compound and clean both the cam and the screw before assembly. When the grub screw is fully tightened it may be slightly proud of the cam, this excess should be filed off. |
Bigger Version |
Now assemble the gearbox as detailed in the separate sheet.
Fit a 6mm x 11mm collar (13/336) to limit the end float on the 1st gear carrier. |
| Place a plummer-block on the short end of the layshaft with the bearing facing away from the gearbox. Fit the 20T gear (43/243) to the hexagonal carrier (43/108) (with one-way roller clutch) and secure with a circlip (22/259). A second collar may be loosely fitted to the flat at the short end of the layshaft. Now place a plummer-block on the long end of the layshaft with its bearing facing the gearbox. |
Bigger Version |
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Note:- Check that you have a thrust washer (12/204) positioned between the gearbox and the plummer-block. A further plummer-block should now be fitted to the long end of the layshaft, but this time the bearing should face away from the gearbox. Loosely fit the hexagonal driver (43/235) to the end of the layshaft with an M4 x 6m grub screw (22/212), the circlip groove in the carrier should face away from the gearbox.
Fit the whole layshaft to the chassis and correctly position the rear hexagonal driver to give minimum end float to the assembly, use thread locking compound when finally tightening the M4 x 6m grub screw in the rear hexagonal driver. The layshaft may now be fitted and the 37T gear (43/242) fitted to the rear hexagonal carrier and fixed by means of a circlip (22/259). The assembly is now ready for final installation in the car. |
| Centre Drive |
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| The assembly should be fitted to the chassis by means of six No.4 x 3/8" screws (22/238). See photographs for correct orientation. |
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Bigger Version |
| Please remember that the variable front to rear ratios have been manufactured to eliminate the need for the centre drive to be moved to adjust the gear mesh and experience has shown that it is important that the drive is accurately located. In view of this, the chassis mounting holes are not elongated to allow adjustment and we ask that you not to attempt to alter this situation. If everything does not line up correctly then there is an error in assembly, so please re-read the instructions. |
| Further Information |
| If you have any comments or suggestions about this or any of the other R/C car content on the RcTek site, please feel free to ask them on our On-line Forum |
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