EASY-BUILD DERBY LIGHTWEIGHT CLASS 108 DMU Assembly Instructions Manual Download Page 8

of the stretcher plate. DO NOT GLUE TO EITHER SIDEFRAME. As before, the bottom of the channel
should be level with the bottom of the sideframe end, you might need to adjust the stretcher-plate
extension a little to achieve this.

29.9)

Finish off detailing the bogie assembly as outlined for the DMCL (rear) non-powered bogie, not

forgetting the central bolster details, which are superglued to the inside of the sideframe mountings.

29.10)

The guard’s door have additional steps fitted to the rear of the bogie in a similar manner to

those at the front. Two extra step mountings are provided for the purpose. Align the steps with the
guard’s door. Fold the step mounting as for the main step, but fold over the top of both mounting legs.
Follow the same construction methods as for the main bogie-mounted steps noted earlier - photo:
Bogie Showing Guard Steps.JPG.

29.11)

Fit the motor to the frame stretcher and glue the pick-ups to the stretcher underside ensuring

the wipers have a good contact with the backs of the wheels. Trim back the pick-up wires as
necessary.

29.12)

Align the worm wheel with centerline of the gear and clip the drive chain in place. DO NOT

MAKE THE CHAIN TOO TIGHT AS THIS WILL CAUSE EXCESSIVE GEAR NOISE AND WEAR IN
THE COMPONENTS AND THUS PREMATURE FAILURE.

29.13)

Lightly lubricate all moving parts and test.

29.14)

There are two different types of axle box covers supplied in the kit, use the slightly domed

Timken covers. Fit covers to all remaining axle boxes - photo: Bogie speedo drive.jpg.

29.15)

Cut 8 (or 12 if fitting guard door bogie steps) 15mm x 5mm 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 WATER FILLER DETAILS TO THE REAR, DMCL AND THE
ROOF WITH THE WATER FILLER.

30a)

An alternative method of securing the body to underframe is described in 

step 53.

Read that

step now before proceeding and decide which method you wish to adopt

30b)

Fit the floor fixing captive nuts into the moulded channel on the underside of the roof. Slightly

reducing of the width of the captive nuts will make their fitment easier, however don’t overdo it as you
don’t want them sliding about when trying to screw the floor in place, nor have them dropping out! A
third captive nut is included as an alternative method of preventing the floor from sagging in the middle
once all the underframe castings are in place, .

31)

Assuming everything has been assembled accurately the roof should fit neatly against the cab

molding at the front with the rear overhanging the end. When the roof is in place the top of the sides
will locate in the groove under the gutter. You may find the central moulded channel on the underside
of the roof needs trimming back to enable to roof to fit between the cab and the rear end moulding.
Fix the roof in place by initially applying solvent from the inside along the joint of the cab/roof moulding
then along the joint between the roof and the side molding, again from the inside. Be very generous
with the solvent here as the ABS can be reluctant to soften.

32)

To make a very secure job, reinforce the sides/roof joint with 30thou (0.7mm) micro rod again

with liberal amounts of solvent. This method can also be applied to the non-cab ends to great effect.

8

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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