Carrying on where we left off its time to look at the running gear. I’m not a big fan of repetitive work so I like to spread the task of wheel and track clean up over a few bench sessions, so this work continues at a glacial pace.
Meanwhile, let us look at the kit’s dodgy sprockets! As already mentioned, they have two big issues. The main one is simple to remedy, if not a little time consuming. Trumpeter have not offset the inner rollers so when you attach the tracks to the sprocket, they don’t sit flat against the track pads. The second is that they have bevelled grooves on the face. Similar marks can be seen on the face in the resto vehicle image below, but they are not deeply grooved. These marks/grooves don’t show in the Panzer Tracts book or appear in any period image that I have seen to date.
I am sure there will be some 3D printed 1/35 Sd.Kfz 7 sprocket files out there somewhere. If you are lucky enough to own or know somebody who owns a 3D printer, then if they can be made specifically to fit the Trumpeter kits that really is the way to go.
The kit front wheels are offered as rubber tyres with plastic hubs. I’m not a big fan of rubber tyres on kits. I know they are mini replicas of the real thing and although the kit ones are OK and the pattern usable, they dont tend to take weathering products too well. I plan to use a set of Quick Wheel resin items. Whilst their wheel spokes are a little ‘off’ in terms of shape, the overall size and wheel tread pattern is authentic. I’m not sure these are that easily available in the UK as they once were. There are, however, many other manufacturers of resin/3D printed wheels in 1/35 scale nowadays. They include Def Model, Panzerart, and ET Model to name a few.
The tracks links are made up of three pieces. The main link, part TR2, the pad holder, part TR1, and the track pad, part TR3. Although this appears an overly complicated design, apart from the tedious clean-up and construction process, they look good and will, if omitting the rubber pad part, represent a cool looking set of burnt out tracks. Use a thicker glue in construction to avoid sticking links together and you have a nice strong set of articulating tracks. So, with this time consuming track and wheel work on steps 13 to 15 still ongoing, let’s come back to these and move on to the bodybuilding steps
With the reworked seat layout and new battery box added during the cab assembly construction step 16, lets look at how the cab assembly aligns onto the chassis. Don't be tempted to add it to the chassis on its own at this point as there are no alignment marks on the chassis rails for it to fit precisely. The front bodywork assembly does have a precise fitment onto the chassis (see step 17) so use this and it will dictate where the cab assembly locates on the chassis.
Step 17 instructs the fit of both the front bodywork moulding, part (WA4) and the cab assembly to the chassis. I have an alternative to this build sequencing which can keep both cab and front bodywork assemblies seperate to aid airbrushing tasks. I will explain my method shortly but if you follow the instructions to step 18 this is where the steering wheel shaft must be added because both cab and bulkhead assemblies effectively ‘trap’ it in place. As shown in step 17 fitment of the front bodywork moulding onto the chassis will also confirm the location of the cab assembly. This is is due to the front bodywork moulding having a precise connection by way of a keyed connection in the chassis rails. The cab assembly just butts up against the fuel tank brackets at the rear and doesn’t actually sit on the chassis rails at all! The only mating surfaces are with the lower front frame (as per pic above) to the chassis, and connection to the front bodywork moulding, around the angled track guards.
As for my alternative build sequencing, having built a few of these I now find it much easier to build the bodywork into sub-assemblies off the chassis until I get some paint on. If you do follow the instructions through these steps, it will make adding a decent coverage of paint to both cab interior and areas below the two assemblies tricky.
Alternative build sequencing (steps 17 through 22)
First attach the steering wheel shaft to the bulkhead assembly. It is connected by way of photo-etch bracing to the inside of the bulkhead and attaching it to the bracing must be added before adding the instrument panel. The only fiddly aspect to this method is if you are displaying the engine panels open. You will then need to ensure the bottom of the steering wheel shaft aligns perfectly with the steering box part which fits onto the chassis rail! It's just a matter of test fitting with components dry fitted. If the engine panels are to remain closed, as I intend with this build, simply snip the shaft in half and connect the lower half to the the steering box. This way you can still attach all the steering linkages.
This alternative method of construction will also keep the radiator housing, engine panels, and bulkhead all snugly connected. Assembling it in this manner means you can also add a painted engine to a painted chassis before adding the painted bodywork and still be sure everything lines up perfectly.
Completed sub-assemblies awaiting paint
Test fitted together
In step 17, we also had assembly of the two exhaust pipes halves. They thread through the various holes and apertures in the chassis frame. The joint is engineered to be hidden inside the exhaust box. I recommend adding the rear section first to get the correct spacing. Although not pointed out in the instructions, there is a small hole in the rear pipe half, just behind the box, that aligns with a pip on the horizontal tube sat underneath the winch.
The front pipe half fits up through a hole in the front bodywork moulding and attaches to the manifold. It is a tight fit next to all the steering linkages. In my alternative method of construction it is far easier to add the front section of the pipe after the front bodywork assembly is added to the chassis. The front pipe to manifold connection point is hidden so if the engine bay panels are closed you can simply snip the angled portion up to the manifold connection short. It is a little more of a challenging process if the engine is visible, as you have to successfully wiggle it into position and align it to the manifold.
Front pipework route.
Step 18 is where you attach the engine bulkhead to the cab assembly. As already mentioned above I’m not a fan of this assembly sequence so devised my own method of construction between the main body sub-assemblies in steps 17 through 22. I have found that if the instructions are followed to the letter, it is all too easy to misalign these main component parts. Adding the bulkhead to the cab floor effectively ‘traps’ the steering shaft. The final placement of the bulkhead determines the position of the cab front panel (part WD18 in step 19), which in turn determines the spacing of the engine bonnet/hood and side panels against the radiator housing, so you can see how easily things could go pair shaped! One of the kit's parts that will almost definately conspire again you is the triangular shaped reinforcing braces, parts WB5 & 6, sat on the engine bay side of the bulkhead. These are crudely moulded and have prominent mould seams. If not fixed in exactly the right position they can have a knock on effect of screwing upon the alignment of all the major sub assemblies. Nice one Trumpy
Step 18 and 19 is where you begin to add all the photo-etch.
If you have at this point kept the engine separate for painting, bear in mind that it will not fit in the engine bay once both the bulkhead (part WD12) and radiator housing (A27) are added.
In step 19 we add all manner of cab and engine parts. The long horizontal instrument panel Trumpeter have bestowed us with includes a full complement of instrument dial decals but beware, the positioning is at odds with period images and resto vehicle pics.
Step 20 just adds the front mud guard/fender lower reinforcing braces which are provided on the photo-etch fret. They don't align to the underbody very well and have to be manipulated to fit. Again, ref pics will help in this area. Step 21 builds up the radiator and housing, engine panels, and bonnet/hood, which all fit well. At this point it is worth noting Trumpeter have included angled witness marks to place the angled armoured front plate, which provide additional protected to all the Flak variant vehicles. This should be removed on this variant.
Steps 22 and 23 finish off the cab and adds all the small accessories like lights, width indicators and tools. Trumpeter have provided a thin clear plastic screen to sit in the windscreen/sheild frame, so is easily added after paint. The whole frame will hinge with care, but it is only by way of photo-etch hinge brackets, so won’t stand up to continuous movement.
PE windscreen/shield frame brackets
Until the next update
Los