EASY-BUILD DERBY LIGHTWEIGHT CLASS 108 DMU Assembly Instructions Manual Download Page 4

CAB ENDS PREP

17)

The underside of the roof gutter (where the roof gutter meets the door opening) is slightly

angled (a production process aid), carefully file this angle square in order to accurately fit the sides.
Check the fit of the sides against the cab ends - make sure you’ve got the correct end of the side to
work with, i.e. the non-baggage, and non-toilet ends. The sides should be level with the bottom edge
of the cab.

**TIP- Number the ends and sides on the inner surfaces to ensure each side mates with it’s appropriate
end later on. 

18)

Prototype photographs reveal that not all units carried windscreen wipers on both left and right

cab windows (the centre window never has a wiper). Drill two 0.4mm dia. holes in the centre of both,
or right hand side window only (your choice) directly above the upper window beading to mount the
windscreen wipers later.

19)

Cut from scrap styrene 4 desk mountings as shown here (right), fix to the

floor of the cab against the cab front with the tallest side forward. See photo:
Craven inside cab for example (Cl. 105 model).

20)

Cut glazing to fit the windscreens now as this is very difficult to do once the body has been

assembled. Start with six pieces 15.5mm x 24.5mm and then round the corners sufficiently to clear
the moulded inside corners of the glazing recess inside the cab. DO NOT FIT just keep safe for now.

If you intend to illuminate the end lights these should now be drilled out as required. No provision is made
for this in the kit and so it is up to the builder to determine how best to achieve the installation.

NON-CAB ENDS PREP

These are our standard BR Mk1 coach ends and so have some details not required on a these units.

21)

Remove the moulded on end step mounting pads (raised rectangular details up the left hand

side), connector details (the two round ‘blobs’) and communication cord details flush with the surface
of the end. 

22)

(DMBS only) Remove the pipe retainers at the lower edges of the end. 

These operations are best achieved by shaving small amounts off with a sharp blade, followed by a fine
file and finally fine abrasive paper. See photo: End prep (Cl. 105 model).

23)

With a fine razor saw, cut off the moulded on bufferbeam level with the bottom of the end.

Use the underside of the end as a fence to guide the saw blade and finish off with a flat file to remove
any burrs.

24)

Give the ends a final inspection and rub over with fine abrasive paper before moving on.

BODY ASSEMBLY - NOW FOR THE FUN PART!

Whilst the solvents used to assemble the components evaporate very quickly the joints they produce take
considerably longer to achieve maximum strength. DO NOT RUSH THESE NEXT STEPS. Leaving ample
time for the joints to harden is essential and you will be rewarded for your patience by not having
unsound joints later on.

25)

(DMBS) Fix a cab end to one side at the opposite end to the baggage compartment and the

non-cab end to the other side adjacent to the baggage compartment to form an ‘L’ shape half box
as shown right. 

4

14 mm

13 mm

10 mm

Summary of Contents for DERBY LIGHTWEIGHT CLASS 108 DMU

Page 1: ...will also find numerous additional prototype and model images to assist you create an outstanding model GETTING STARTED The basic steps are the same for both car types so unless there is an operation...

Page 2: ...ype without the butterfly mounting part E11 It is probably unusual for this arrangement to have survived throughout the unit s working life so if possible check photographs of your chosen unit before...

Page 3: ...es not need marking because the motor cut out in the floor makes orientation obvious 13 Check the floor molding for flatness if it appears too distorted some curvature is quite normal gently bend it i...

Page 4: ...should now be drilled out as required No provision is made for this in the kit and so it is up to the builder to determine how best to achieve the installation NON CAB ENDS PREP These are our standard...

Page 5: ...it but not sloppy if necessary clean hole with a 2 5mm drill Do not fix in position as adjustments will be made later 28 3 Using a pin add a tiny drop of oil NOT WD 40 into the bearing surface 28 4 Pl...

Page 6: ...ogie stretcher While the basic bogie assembly sets identify and remove the bogie front channel guard irons speedo drive mount and bogie steps from the etched sheet 28 14 Fold up the bogie channels E3...

Page 7: ...is might need further adjustment later on 29 5 Bolt one sideframe assembly to the bogie stretcher plate with 2x 2mm nuts and bolts provided 29 6 Insert the wheelsets into the assembly ensuring the set...

Page 8: ...mm x 0 7mm 30 thou step treads and fix to the step supports as required BODY ASSEMBLY CONTINUED NOTE BEFORE PROCEEDING MAKE SURE YOU HAVE GOT THE CORRECT ROOF AND BODY PAIRED TOGETHER DMBS WITHOUT WAT...

Page 9: ...loor molding 37 Check the floors will fit within the sides and end molding It is likely that you will have to adjust the floor width to gain the best fit Do this carefully removing the minimum amount...

Page 10: ...U cables some method of attaching cables is necessary if not the castings can simply be fitted as is with the exception of C1d which should always be prepared as described 43 1 After cleaning up the c...

Page 11: ...connection the final position being approximately as shown right The bottom mounting bracket should be 17mm from the bottom of the end 48 Decide whether to fit the small destination box C6 or the larg...

Page 12: ...90o and fix solder glue into the half etch pads in the rear cab walls so that the folded projection forms a slot with the fold at the bottom of the cab partition See photo Partition with floor support...

Page 13: ...See photo mid body strengthener and cab walls Cl 129 model for this additional much wider support as used on the Cravens Class 129 54 Cut a piece of 1mm 40 thou styrene 15mm wide to fit between the mo...

Page 14: ...le assemblies have been mounted the exhaust stub on the diesel engines can be soldered or glued to the rear of the exhaust flexible canister the round cylindrical bit to give extra support to the exha...

Page 15: ...e installing the etched window frames check the fit of the window glazing within the openings Carefully file the edges of the glazing panels until they fit snuggly but not sloppy nor tight Using a slo...

Page 16: ...floor to be fitted Paint and fit toilet cubicle as appropriate FINAL ASSEMBLY 69 Find the windscreens you put in a safe place some time ago and fit using small amounts of adhesive If you have some RC...

Page 17: ...and secure as before 79 Assemble the underframes onto the appropriate bodies and secure in place 80 Mount the bogies and ensure they are free to rotate The speedo drives can be connected to the soleba...

Page 18: ...mm taken from rear of roof 99 8 8 237 21 Water filler DMCL only 46 5 DMBS BAGGAGE AREA ABS DIVIDER PARTITION WITH DOOR SEATING ARRANGEMENTS SHOWING FACING DIRECTION HALF PARTITIONS DMCL DTCL PARTITIO...

Page 19: ...4 C15 C32 C13 C26 C30 C27 225mm 235mm 242mm 249mm C30 C31 C26 C13 C23 C19 C14 C11 C24 C15 C32 C13 C29 E8 C22 C25 C10 C17 C13 C18 C26 C31 100mm 104mm 132mm 146mm 156mm 181mm 203mm 220mm 230mm 242mm 245...

Page 20: ...20 DMBS DMCL CASTINGS CONTROL DESK DETAILS...

Page 21: ...EIVER BACKING for small casting C6 E14 SPEEDO SENDER BACKING for large casting C6 E15 LARGE HEADCODE BOX E16 LARGE HEADCODE BOX FRONT E17 LAMP IRONS E18 BRAKE WHEELS E19 2 DIGIT HEADCODE FRAME E20 HEA...

Page 22: ...o with the round aluminium mounting is securely in place as described in the main text file or cut off the edge of the floor motor opening and mounting sufficiently to allow the motor to move through...

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