Got home from work yesterday and a package was waiting from Comet (thanks Geoff!)

So I kinda forgot about doing more connecting rods and waded into putting the DE38 drive extender together for the gearbox.

Here is is in all it's glory attached to the GB5 and Sagami motor.

I took Comet's advice and have not used the grub screws on either of the gears fitted to layshafts. a spot of superglue holds the layshafts in place and the gears are free to rotate on the shafts. This does seem to help these gears run true.

It spent most of the night running in but I think the final gear on the drive axle is a little tight in it's bearings. A few stokes with a flat file should sort this tonight.

The sideplates of the DE38 just fit between the frames although I will need to cut slots to accommodate the larger 1/8" layshaft. This will serve to hold the whole gearbox in place though

Once fitted the motor might still not clear the boiler lower if fitted horizontally, so a slight upwards angle might be in order.