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LB&SCR E2 EM Chassis.
Note: This is a fixed chassis so reaming out the axle holes downwards and allowing the bushes to move freely may help things. The dummy hornblocks have 'etched' lines cut into them to aid a saw should you wish to remove these and add real brass sprung hornblocks in their place. If using a FUD chassis the chassis will be weak until the replacement hornblocks are properly installed. Chassis more readily set up for springing are being worked on as a future development.
If building the original / standard E2 then 1mm of material will have to be filed off the front of the chassis frames as the later versions were 3 inches longer here.
The axle holes will need 1/8th / 3mm 'top hat' bearings glued in place. Either side of the holes are slight 'etched' blocks or compensation etc.
The brake pads are already in position for the wheels, the brake rodding is sprue joined on the top and needs to be carefully cut off and added after the engine is running nice. To make this easier very carefully hand drilling the holes in the brake pads will make locating and dislocating the brake rigging much easier.
A spacer is sprue joined to the side of the chassis and needs to be added inside the frames where ever you choose. The choice depends on what gearbox you are using and the sapace it takes up. If using a gearbox thinner than the space provided then thickening the frames with some thin plastic will make everything flush.
The chassis joines to the body by slotting the rear protrusion into the space on the body then angling the whole chassis upwards, if it is a little tight then filing in the recesses will alleviate this. The hole at the front is for fitting to the body, a 10 or 11BA cheese head bolt is reccomended, you don't need to add a nut to the top as it will self tap easily in both WSF and FUD and can easily take repeated handelling, however, a space inside the smokebox saddle on the body is provided should you wish to add a nut. If the hole is a little tight then drilling or reaming it out to a wider diametre is fine.
Assemble motor, gearbox, wheels etc as per most locomotive kits.
For wheels, axles, crankpins etc Alan Gibson is a great resource
But of course you can use whatever suits your needs and preference best, the above has been typed out to hopefully aid you should you be new to kit building. The advantage of these 3D printed kits is 90% of the work is done for you, both on the body and the chassis.