Jump to content
 

Brunig Bahn/BVZ middle entrance coach guide - the 1:22.5 models take shape...


Satan's Goldfish
 Share

Recommended Posts

The first one :)

 

post-9147-0-27834500-1520605896_thumb.jpg

 

post-9147-0-46539800-1520605906_thumb.jpg

 

More rigid than expected so it's bolt count has been reduced to 12 and the ugly strengthening bar at the bottom has been cut out.

 

post-9147-0-38070400-1520605939_thumb.jpg

 

Coupling height and mounting height are as good as I'll ever get :)

 

More after the days cutting fest has finished (if all the material actually arrives)

  • Like 1
Link to post
Share on other sites

Massive pile of parts!

 

post-9147-0-82964200-1520625237_thumb.jpg

 

Enough for 2x BVZ 2nd class, 1x ex-SBB 2nd class, and alteration parts for the prototype ex-SBB composite behind which needs stripping back down and rebuilding with new sides, glazing, ends, door steps, and bogie mounts. Productive day!

Link to post
Share on other sites

Ends, doors, and sides are added. Doors have received a coat of humbrol 'aluminium' spray paint before having their glazing added. These are just the inner side parts showing where the tables between the seats fit and how the sides are held in the correct place by the chassis and the top frame.

 

post-9147-0-70052900-1521821077_thumb.jpg

 

 

 

 

From the other side, showing the tables and basic interiors.

 

post-9147-0-07425900-1521821198_thumb.jpg

 

post-9147-0-12957500-1521821240_thumb.jpg

 

 

 

 

Glazing added. The glazing for the toilet compartment has been sprayed white on the inside. Glazing lines up with the same mounting points as the inner side parts.

 

post-9147-0-31414300-1521821275_thumb.jpg

 

post-9147-0-12439200-1521821493_thumb.jpg

 

 

 

Outer sides are screwed over the top to hold everything in place.

 

post-9147-0-25156800-1521821565_thumb.jpg

 

 

 

 

The screws help hold the sides in line with frame so they narrow at the coach ends. Half the trick was taking into account how much the different materials expand during laser cutting, the diagram length for the plastic sides ended up needing to be shorter than the mdf frame to compensate.

 

post-9147-0-71425200-1521821776_thumb.jpg

 

 

 

 

The roof frame is then carefully put back on to make sure it still fits. There's many more parts for it to fit around now so it's not as easy as before.

 

post-9147-0-21294800-1521821892_thumb.jpg

 

post-9147-0-99101000-1521821919_thumb.jpg

 

 

 

 

That was a BVZ 7 window 2nd, I also got the sides on an ex SBB 9 window 2nd before running out of tiny screws.

 

post-9147-0-41236900-1521822016_thumb.jpg

 

 

 

 

I need to try moulding the roof skins again now I've had them cut from a more flexible material. Wish me luck!

  • Like 1
Link to post
Share on other sites

  • 3 weeks later...

I now have an ex SBB 7 window 1st to build as well. This is the last one I want to make* and leaves me with one of each of the 3 types of ex SBB coach, and 2 of the short BVZ 7 window 2nd coaches.

 

I figured I'd better photograph and document how this one goes together just in case anyone else ever asks for a kit of parts.

 

Part 1: MDF parts and plastic seats.

 

Join the 2 parts of the access steps together using 2x 16mm long 3mm self tapping screws through the pre-cut holes.

 

post-9147-0-36568900-1523179504_thumb.jpg

 

post-9147-0-19150700-1523179537_thumb.jpg

 

Repeat for the second set.

 

 

 

 

Fit both sets of steps into the underside of the carriage base. Raised tabs locate into holes on the base, then fix in place using 4x 16mm long 3mm self tapping screws.

 

post-9147-0-49238400-1523179636_thumb.jpg

 

 

 

 

Insert 2x 30mm m6 bolt through the bogie mount holes (with a washer each side) in the carriage base so that the bolt head is on top. Tighten with m6 nuts so the bolts can not move.

 

post-9147-0-53050700-1523180026_thumb.jpg

 

post-9147-0-83506200-1523179681_thumb.jpg

 

 

 

 

Fit the bogie mount blocks over the exposed bolt threads, nuts, and washers on the underside. Check the flat part of the semi-circular mount is facing towards the end of the carriage. Fix in place with 4x 16mm long 3mm self tapping screws through the pre-cut holes each side of the bolt heads.

 

post-9147-0-11956400-1523180173_thumb.jpg

 

post-9147-0-55261300-1523180451_thumb.jpg

 

 

 

 

Loose fit the 4x interior partitions on top of the carriage base. There is a partition for each side of the entrance vestibule (one of these will have the toilet door etched onto it) and the 2 other walls of the toilet cubicle. The walls for the entrance vestibule locate into notches on the base each side of the doors. The walls for the toilet locate into holes cut into the base.

 

post-9147-0-08729100-1523180670_thumb.jpg

 

post-9147-0-65661400-1523180959_thumb.jpg

 

post-9147-0-55836800-1523180984_thumb.jpg

 

Note; the toilet walls in the composite and 2nd class coaches do not span the whole carriage width to create an extra space. The space next to the toilet in those carriages has more 2nd class seating instead.

 

 

 

 

Add the 8x mounting tabs to the underside of the top frame. There are 4 tabs on each side of the carriage, 2 along the middle and 1 at each end, that locate into notches in the frame next to a screw hole. Add a small amount of wood glue to the part of the tab that will be under the screw hole. The tabs are a very tight fit to the top frame.

 

post-9147-0-90425500-1523181181_thumb.jpg

 

post-9147-0-81208700-1523181417_thumb.jpg

 

 

 

Drill a 1mm pilot hole into the tab through the top frame screw hole. Hold in place with a 6.5mm long 2mm self tapping screw. Repeat for all 8 tabs. Then loose fit the top frame on top of the interior partition locating tabs to check alignment.

 

post-9147-0-10938500-1523181793_thumb.jpg

 

post-9147-0-23685300-1523181959_thumb.jpg

 

 

 

 

Check for correct quantity of plastic seat parts. There are 3 types made up of an upright and either 1 or 2 seats; 1st class single, 1st class double, and second class double. There is a protective film on each side of the plastic that needs removing first. Different colours are available but due to variations in the manufacturing process they are not always the same thickness of material and the locating holes in the uprights may need filing out slightly to accept the seats (the plastic can snap if forced).

 

post-9147-0-77143900-1523182092_thumb.jpg

 

post-9147-0-73648500-1523182505_thumb.jpg

 

 

 

 

Add a small amount of plastic/super glue just inside the locating tab on the seat then insert it into the upright. Single seats have 1 tab, double seats have 2. For back-to-back seating, add a second seat to the upright in the spare locating holes.

 

post-9147-0-47328500-1523182706_thumb.jpg

 

post-9147-0-86198200-1523182732_thumb.jpg

 

post-9147-0-18613500-1523182765_thumb.jpg

 

post-9147-0-05664100-1523182785_thumb.jpg

 

post-9147-0-60166300-1523182816_thumb.jpg

 

post-9147-0-19545500-1523182854_thumb.jpg

 

 

 

 

Remove the loose fitted top frame and interior partition from the carriage base. The seats locate into holes cut in the base, these can be very tight and may require filing out to allow the seat to fit. Once all the seats are in, refit the interior partitions and top frame.

 

post-9147-0-67321400-1523183132_thumb.jpg

 

post-9147-0-24488400-1523183167_thumb.jpg

 

post-9147-0-56532400-1523183244_thumb.jpg

 

 

 

 

The roof frame is made up from a centre length, 2x side lengths, and 3 different types of cross ribs (ends, inners, and vent inners) quantities of which depend on the carriage being built. They slot together and are tight enough not to require glue. Not gluing them also allows the ribs move slightly locating them onto the rest of the carriage.

 

post-9147-0-33746700-1523183269_thumb.jpg

 

 

 

 

Fit the appropriate ribs to the centre of the centre length.

 

post-9147-0-39167300-1523183490_thumb.jpg

 

 

 

 

Add the 2x side lengths.

 

post-9147-0-29774200-1523183526_thumb.jpg

 

 

 

 

Fit remaining ribs.

 

post-9147-0-43653100-1523183551_thumb.jpg

 

 

 

 

Loose test fit onto carriage to ensure the ribs locate correctly into the top frame.

 

post-9147-0-18036000-1523183804_thumb.jpg

 

Note: the roof is handed and will only go on 1 way round. Do not glue the roof to the carriage top frame, it is designed to be removable for adding figures and lighting.

 

 

 

 

That's it for the moment. Part 2 coming when the weather improves so i can go outside to do some spray painting. Big thank you to Tim Horn again for time on the laser cutter and helping create these.

 

 

 

*I could draw up the BVZ 7 window 1st and 7 window composite easily enough if someone really wants them, but I don't.

Edited by Satan's Goldfish
Link to post
Share on other sites

The question whether or not someone wants that kit of parts depends on price, I'd reckon. Any indication possible?

Back of napkin calculations:

 

£25 of 1.3mm clear perspex

£15 of 3mm acrylic sheets

£20 of 1.3mm red/white laminate plastic sheet

£25 of various 3mm, 6mm, 9mm, mdf (Tim Horn off cuts (guesstimate cost))

£5 plasticard

That makes £90 total in cut parts, plus Tim's time on the laser cutter (up to £100 depending on quantity being cut (4 coaches took an entire day when still under development))

 

Screws, nuts, bolts, and glue are all easily found off the shelf 'cheap' items so builder can provide them. LGB wheel sets, couplings, and any other detail parts required to be sourced by builder (designed to accept LGB bogies and end corridor connectors, but I've also had my own cut due to lack of supply). Plus paint and graphics, seated figures, lighting etc as required.

 

So, maybe £120 including postage per coach for the kit of parts at a guess, plus price of builder supplied parts would vary.

Link to post
Share on other sites

Part 2; doors and ends.

 

It stopped being wet long enough to make some progress (The wife draws a line at me using spray paints in the house).

 

 

 

Side doors.

 

4 doors with an etched join down the middle on the red side:

 

post-9147-0-41969200-1523720009_thumb.jpg

 

 

 

 

Paint the red side silver. In this case, Humbrol Aluminium.

 

post-9147-0-21055700-1523720039_thumb.jpg

 

 

 

 

Remove clear protective film from the white side:

 

post-9147-0-16206300-1523720104_thumb.jpg

 

 

 

 

Use the guide lines on the side door frames to line up the position of each door, held in place with a small drop of superglue top and middle (if you forget to take the protective film off the white side they won't stick)

 

post-9147-0-18872200-1523720178_thumb.jpg

 

post-9147-0-07643400-1523720305_thumb.jpg

 

 

 

 

Turn door frames over. Remove protective film from both sides of door glazing panels and fix in place on the back of the doors with small drops of superglue:

 

post-9147-0-34330500-1523720345_thumb.jpg

 

 

 

 

Find notch in top frame to slide doors into, slide them down until the door frame rests on the carriage base (top of the doors should align with the top of the carriage top frame). Fix doors in place with a 6.5mm long 2mm self tapping screw through the bottom hole in the door frame into the carriage base.

 

post-9147-0-60313600-1523720451_thumb.jpg

 

post-9147-0-85804800-1523720707_thumb.jpg

 

Fit a pair of doors to each side.

 

The 2x 1.5mm holes between the doors and in the partitions each side of the doors are for fitting 1.5mm metal rod into to create hand bars.

 

 

 

 

Carriage ends and end doors.

 

Mask red side of the end door panels so that the masked lines run roughly in line with the notches and top tab, leaving just the centre portion exposed. Spray exposed area silver (Humbrol Aluminium).

 

post-9147-0-59113900-1523720877_thumb.jpg

 

post-9147-0-33710700-1523721169_thumb.jpg

 

 

 

 

Remove masking tape. Remove protective film from the white side of the door panels. Remove protective film from both sides of a piece of door glazing. Superglue glazing into place centrally over the window cut out on the white side.

 

post-9147-0-48636700-1523721201_thumb.jpg

 

Repeat for both ends.

 

 

 

 

Locate the door panels into the cut outs on the carriage base ends and top frame ends. It should be a tight fit onto the base ends with tabs ending up flush with the door panel. The next part is easier with the roof frame removed.

 

post-9147-0-14033700-1523721398_thumb.jpg

 

post-9147-0-15748300-1523721612_thumb.jpg

 

 

 

 

The coach end fits over the door panel. It is held in place with 3x 6.5mm long 2mm self tapping screws. Fit the bottom one first into the carriage base. Of the top 2, fit the one on the left* next; this needs to pass through the carriage end, the door panel, and into the top frame mounting block. A 1mm pilot hole needs drilling into the block before adding the screw. Once the left one is fitted, do the same for the right screw.

 

post-9147-0-81107500-1523721668_thumb.jpg

 

This sounds easy enough, but you really need about 4 hands to hold everything in line while the holes are drilled and screws are fitted.

 

*Fitting the upper 2 screws will try and add rotational torque to the top frame. By doing the left first it forces the top frame down into it's end mounting position on the right. If you do the right first it makes the top frame lift away on the left and is then much more difficult to align for drilling and screwing.

 

 

 

 

 

Coach now has side doors and ends.

 

post-9147-0-42620600-1523722356_thumb.jpg

  • Like 1
Link to post
Share on other sites

Part 3, sides;

 

The sides are made up of three parts; inner, clear, and outer. So let's start with the window tables! This coach requires 12 of them, remove protective film from each side of all the tables.

 

post-9147-0-96760100-1523731856_thumb.jpg

 

 

 

 

There are 4x inner sides made from red/white laminate, they will all only fit in 1 position. Remove the protective film from the white side.

 

post-9147-0-92444200-1523731889_thumb.jpg

 

 

 

 

 

Add a small amount of superglue each side of the window table tabs. Add the tables on the white side, locating the tab into the notch beneath each window.

 

post-9147-0-65279400-1523731977_thumb.jpg

 

post-9147-0-86819400-1523732036_thumb.jpg

 

Repeat for all 4x inner sides.

 

 

 

 

 

Find the clear sides with an etched vertical line and select just 1.

 

post-9147-0-38609800-1523732175_thumb.jpg

 

 

 

 

This clear side will fit where the toilet cubicle is, the etched line is an aid to painting the cubicle window white. Work out which side will be inner most and peel back the inner protective film from the toilet cubicle portion. Use masking tape to hold the remaining protective film and mask off where the guide line is. Spray the exposed area with white paint (I've used a generic transit van white, other commercial vehicles are available).

 

post-9147-0-87342600-1523732238_thumb.jpg

 

post-9147-0-18523400-1523732454_thumb.jpg

 

 

 

 

 

Remove the protective film (And masking tape from the sprayed portion) from both sides.

 

post-9147-0-60661800-1523732569_thumb.jpg

 

 

 

 

 

Add inner sides to one side of the carriage. As mentioned previously, each inner side is unique to 1 position. This is easier with the roof frame removed. These locate onto tabs on the side of the carriage base and top frame and are a tight fit. There should be excess tab exposed through the holes in the sides.

 

post-9147-0-00986100-1523732672_thumb.jpg

 

post-9147-0-21908100-1523732805_thumb.jpg

 

post-9147-0-81806500-1523732861_thumb.jpg

 

 

 

 

Add the clear side parts over the top. These locate onto the same tabs on the side of the carriage base and top frames, the tabs should sit flush with outer side of the clear parts.

 

post-9147-0-73556600-1523732897_thumb.jpg

 

 

 

 

Find the outer side for the side you're working on. Handle with care, the thin section above the doors is quite flimsy. Remove the protective film from the white side.

 

post-9147-0-43655900-1523733018_thumb.jpg

 

 

 

 

Each side is held on with 8x 6.5mm long 2mm self tapping screws that must be fitted in a certain order to get correct alignment. Line the upper outer side holes up with holes along the top of the clear and inner sides. Drill 1mm pilot holes into the top frame mounting blocks and fit the screws to the 2x upper holes closest to the carriage doors.

 

post-9147-0-00135700-1523733121_thumb.jpg

 

post-9147-0-89198600-1523733302_thumb.jpg

 

 

 

 

Next drill 1mm pilot holes and fit the upper screws at the outer ends.

 

post-9147-0-81441700-1523733330_thumb.jpg

 

 

 

 

Finally fit the 4 lower screws. These tap straight into the carriage base and do not pass through holes in the clear and inner sides so can not be relied upon for correct alignment until the upper screws were fitted.

 

post-9147-0-02400500-1523733482_thumb.jpg

 

Repeat for the other side of the coach.

 

 

 

 

Coach now has sides; white inside and red outside. The seats are still accessible with the roof removed for adding figures or other interior details.

 

post-9147-0-96322200-1523733624_thumb.jpg

 

 

 

 

 

Re-fit the roof frame. This now has to fit into notches in the sides as well as holes in the top frame so can take a bit more effort to get back onto the coach. However, it lines up a bit easier each time it is taken off and put back on again.

 

post-9147-0-72639800-1523733722_thumb.jpg

Edited by Satan's Goldfish
Link to post
Share on other sites

Not done quite enough work yet to write part 4, but I've added some spare LGB corridor connectors to the BVZ coaches. Ignoring the (still) lack of roof skin, adding just that 1 detail looks great to me. Less like something I've been screwing together and more like a model coach :)

 

post-9147-0-36119200-1523791459_thumb.jpg

Link to post
Share on other sites

  • 6 months later...

A quick up date as it's been a while. As some may know, Mrs SG and I moved house a few months ago so diy, moving furniture, and unpacking has eaten a lot of my modelling time. The carriages survived the moved safely, but then the dog found the 7 window 1st to jump on in excitement...

 

The roof frame has suffered damage on both long side pieces, and the carriage top frame has also been broken, but I have all the parts still and just need to decide whether to get new parts cut or fix the broken ones.

 

post-9147-0-81970000-1541413195_thumb.jpg

 

All 5 together waiting for attention... or Mrs SG telling me to get them out of her new living room... let's see which happens first! Hoping I find the box of spare parts soon so I can start building bogies. Experiments with plasticard for the roof still haven't worked so may end up being normal card suitably protected.

 

post-9147-0-57738500-1541412933_thumb.jpg

  • Like 1
Link to post
Share on other sites

  • RMweb Gold

Have you explored making a roof master and getting it vac formed somewhere? Even if you split it in two to fit a smaller machine there’s only one join to smooth out.

If you can find somewhere local ask what thicknesses of plastic they can do and shape a block of wood, or fill one of your frames in and support with a plaster block, less that dimension thickness. I’d settled on that when I was thinking of cheap full length EW’s for G. Never got past the basic etch artwork though as I decided on the HSB layout in G ;)

Edited by PaulRhB
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...