New gear for a Oxford Rail Janus
Customer commission to replace damaged nylon drive gear for an Oxford Rail Janus.
Lima EuroSprinter final drive gears
Customer commission to replace split nylon final drive gears in a locomotive bogie.
Refurbishment of a 'O' Gauge gearbox
Customer commission to replace the original Nylon gears with new brass ones due to wear and damage.
The gears in the gearbox are a mix of 40 dp for the helical gear and 0.4 mod for the two spur gears. The gears that were replaced are a 16 tooth 40 dp 2 start helical gear, a 16 tooth 0.4 mod pinion and a 48 tooth 0.4 mod spur gear. This gives an overall ratio of 24:1.
One of the changes that was made to the gears was the 16T pinion was changed to a 15 tooth pinion. This was done to stop the undercutting on this gear which would have made the gear teeth weak at the root of the tooth. This made a small change to the overall ratio of the gearbox which is now 25.6:1.
Another change was that a brass thrust washer was added to the face of the 15 tooth pinion, this was done to reduce the chance of the 15 tooth pinion cutting into the Nylon face of the gearbox side.
Lima continental Rae-TEE final drive gears
Customer commission to replace split nylon final drive gears in a locomotive bogie.
Brass gears for SAM gearbox
Customer commission to replace split nylon idler gears in a locomotive bogie.
Brass gears for locomotive gearbox
Customer commission to replace split nylon gears in a locomotive gearbox.
Brass gears for 'O' Gauge Heljan Class 42 'Warship'
Customer commission to replace split final drive gears on a Heljan Class 42 'Warship'.
Brass gears for 'O' Gauge Heljan Class 37
This was another customer commissioned job. This time to replace split gears on a Heljan Class 37. The only gears replaced this time were the ones that split.
All brass gear train for 'O' Gauge Heljan Class 33
This was a customer commissioned job following some of the original nylon moulded gears splitting.
All gears were replaced whether they had split or not, along with new shafts and axles. This was done to avoid the possibity of any of the other gears from splitting later. At the same time the spur gears that are meshing with the worm were replaced with the correct helical gears with a wider face width, this now allows the worm and wheel gear set to mesh at their pitch diameters. Also the end float in the helical/spur gear cluster was also reduced. The two spur gears that mesh with this gear cluster also had their face widths reduced to allow for the increased face width of the helical gear. As all the gears are manufactured from brass the reduction of the face with on some of these gears should not cause any problems in performance.
Replacement brass final drive gear for KISS G Scale locomotive
The original final drive gears had split in two across the holes for the gear drive pin locations. Out of the four final drive gears in the locomotive, all but one had split.
Unlike the original gears the new replacements have been fitted directly to the axle, without the need for the original drive pin setup. The new gears also had the face width reduced to increase the clearance between the final drive gear and the worm wheel.
One of the completed bogies with two new final drive gears fitted.