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technique

Something a little different!
Building Crescent Models' Williams FW23B
by Chris Clay

Saturday morning is the day new orders arrive more often than not, so when the eagerly awaited Crescent Models Williams FW23B and Z-Model Jordan (more on this at a later date!) arrived, I felt like a child in a toyshop.
Crescent Models are very much a 'multimedia kit' with resin main body, white metal undertray, front wing and smaller accessories. Photo-etching is either stainless or nickel steel (not sure which) for small parts, wheel centres, rear wing endplates and suspension. The wheels are turned aluminium with nice rubber tyres.
The brake discs are turned brass, to which will be added white metal brake callipers. The front wing is a very complex shape, and as with recent Tameo kits, produced in cast white metal.
The decals are quite acceptable to the standard of Cartograph. The main criticism here is that the carbon fibre used to portray the inner surfaces of the front and rear wing end plates are not at all convincing.
Instructions are a double sided A4 sheet similar to SMTS, adequate but a little vague on part placement diagram. A second sheet is provided showing the finished model from several angles in full colour.
A colour chip and specification for the Williams Blue is attached to the main instruction sheet. There is also a black and white photograph showing the position of the turning vanes under the front suspension arms.
An interesting inclusion is a template that requires cutting for masking the rear body before the Blue is airbrushed. On the main body, around the airbox top and from the cockpit to the lower nose, there are fine panel lines to aid masking.
Generally, everything is as it should be, but not to the quality of say a current Tameo kit. The white metal castings remind me very much of how Tameo produced white metal casting a few years ago. Not bad at all, just a little rough and they clean up quite nicely with fine wet & dry. The photo-etching is much the same and looks acceptable. The etched parts lack the almost three-dimensional feel of more recent Tameo items. They are however no worse than Provence Moulage.
The wheels and tyres are particularly well done and remind me very much of Tameo.
The kit is generally up to the standards expected by most model builders these days and the resin body is cast in a similar resin to Marsh Models. It does not have the complexity of a recent Tameo or BBR and in many ways will suit the novice builder. So that is a brief look at and comparison of the kit components.
Before I start a new model, I usually spend hours looking in books, magazines and photographs or indeed any reference material that I can find. This is where my first reservations of the model started to creep in.....
The exhaust outlets are entirely in the wrong position, fig.1. They are too far inboard and replicate the position at which they were finalised prior to the USGP.



The initial position of the exhaust outlet first tried by Williams was at Spa and then the Italian GP two weeks later. Page 40/41 volume 9 of Formula 1 magazine clearly shows the rear view and the true position of the exhaust outlet. To rectify this is a fairly easy procedure. Firstly, with a sharp scalpel (I used Swan Morton #11), cut around the edges of the exhaust outlets. This is so that when filled it will be easier to blend into the rear bodywork. As a matter of interest, I always use Plastic Padding elastic car body filler for filling as it sets hard enough and is easy to rub down. The next bit is a little more difficult as a certain amount of 'guesstimation' is required. I am not in a position to have scale plans of the FW23B so I relied only on photographs as a reference to drill the new positions.





Using a 1mm drill, positioned as shown in fig.2, but DO NOT drill too deep otherwise you will break through the lower rear body just under the 'flip up'.
The hole that is produced will then require opening out as per fig.3. As a reference, beg, borrow or whatever, F1 Magazine Vol. 9 pages 40/41 and 130/131 and you will see what I mean.
The front wing is also questionable. The instructions show that there are two air deflectors under the front wing. Not only are they shown to be straight which is incorrect, but also I can find no reference at all that they were used for the Italian GP. The same goes for the deflectors on the end plates. I am not disputing these were used at some stage, but not for this race. They were duly removed. If I am indeed wrong on this score, it will be easy to fit them later.
The front wing aerofoil section is also on the rather heavy side. I rounded all leading edges and thinned all trailing edges.
The instructions show that one of the aerials is fitted to the right hand side pod just behind the radiator inlet. This is also incorrect. There should be three aerials on the top of the body centreline just forward of the cockpit. Nearest to the cockpit should be the flat blade aerial, black for Montoya. Moving forward, the next is a black 'round' aerial and close to it the pitot tube.
The white metal undertray was the next area tackled. This includes small aero devices ahead of the side pods which I didn't find totally convincing, so I modified them slightly. Be careful here because the metal is soft, I can't recall how many times I bent the things!

After the ends were glued on, I smoothed these parts as best as I could with a small Swiss file and a tiny amount of filler where necessary. As these pieces are of an aerofoil section in the conventional sense (albeit very shallow) and not reversed as on the front and rear wing elements, not too much work was required. However the outer edges did not look quite right so I filed the upper section to slope down 4-5 mm from the end face. The lower (under) side, I filed until almost parallel with the upper profile. There is an excellent example of this part on page 87 of the brilliant Giorgio Piola book 'Formula 1 2001 Technical Analysis' (ISBN8879112791). Once I was happy with the profile and shape, I searched the spares box for some scrap photo-etch. I cut off two pieces to length and glued them to the end face so that the lower edge was flush with the lower aero profile; this produces an upper edge fence that stands proud by approximately 0.5mm.
The assembly of the turning vanes is very awkward, and at the time of writing I still have not yet fitted them to the model. There is no template as a guide to bend them to. This is in effect another problem area, as the turning vanes are a three-dimensional profile form and difficult to replicate. Again, study photographic evidence, or better still Giorgio Piola's book pages 34, 86, 87, 89. As to the colour of the vanes, the instructions suggest that they are blue. This is very difficult to confirm from photographs, but in the Giorgio Piola illustrations the suggestion is that they are black, indicating natural carbon fibre.
While the paint on the main body was hardening, I completed all remaining painting. I used Halford's Satin Black for the suspension, undertray and all ancillaries but then a big mistake was made!
After finishing the body in Halford's Appliance White and leaving it to harden for three days or so, I masked off the white as necessary to airbrush the blue. As Tamiya have produced the later generation Williams, I thought that the blue recommended, Deep Metallic Blue, would be ideal. How wrong could I be, it's far too dark. I airbrushed four light coats on the front wing, rear wing assembly and the main body.

 
After removing all masking, and viewing it in strong sunlight (it was hot the first week of assembly) it looked okay, but in subdued light the blue looked positively purple/black. I was not happy with the panel engraving either, as even when painted they still looked far too deep and wide to my eye.
At this point I made the decision to strip off all the paint and start again. I have always used acetone to remove old paint of both resin and white metal with no ill effects at all. Unfortunately the Crescent resin is considerably different to anything I've encountered before. Although the paint came off very easy as it always does, the resin has not exactly started to melt, but it was now very soft and pliable and not as hard as it had been, so be careful. Depression quickly sent in!
After further preparation, the body was eventually re-sprayed with Appliance white again. Searching through Halford's Blue stock, the nearest colour match I could find was VW Pearlecent Indigo Blue. Although darker than the included sample chip, when airbrushed on, the Indigo blue looks convincing-particularly in natural daylight.
As a suggestion, cut narrow BareMetal foil (BMF) strips to mask off all straight lines as required. Then use the paper template to make the top of the side pod masking profile again using BareMetal foil.
This will leave a much lower demarcation line after the blue has been sprayed. By doing so it will be easier to feather the edges before the silver decals are applied. (Like I didn't do!)
After three days I airbrushed on Gipgloss single pack lacquer, for some reason I cannot get on with using Halford's aerosol clear lacquer. All suspension components were treated to carbon fibre decals (BBD014), as were all the replacement sections for the wings. I also added some to the top of the airbox camera and the aero features in front of the radiator sidepods. I did not apply the carbon fibre decals prior to lacquering but afterwards, as I think this gives a far more realistic finish. After a few hours, I applied some silver decal strips to the lower rear wing.
The wheels were assembled, then sprayed with Halford's gloss black. When dry I airbrushed on two coats of Alclad II Aluminium (ALC001). This gave the impression of slightly dirty wheels without the brightness of plain aluminium. As I had no intention of using the kit wheel mounting parts, (they look over scale to me) I filed the short pins that locate the wheels on the brake disc assembly until they were just a little proud of the wheel centre. The brake assembly was then glued onto the suspension. When hardened, I fitted the wheels to the brakes and added Tameo wheel pins (TMKPG20) to the centre position. The pins were then painted using Humbrol Metallic Blue and Metallic Red.


So, in conclusion, how does this kit compare?
The general execution of this kit is very good but there are areas like the aero features on the rear body that could have been photo-etched. The wheels and tyres are very good, but the same cannot be said of the kit wheel nuts that are grossly over-scaled.
The resin body is very nice in general, but the panel lines on my kit did not look so good when painted. I feel I made the right decision by filling them, though this is personal preferance.
The decals are particularly interesting, generally well printed except for some of the very small ones. They are extremely thin and are reminiscent of some of the North American aeroplane decals. No solvents are required and I certainly would not even think of using Solvaset (SS). I did however use Micro Set (MSSET) just to keep the decals wet enough when positioning them, and had no ill effects at all. The ineffective carbon decals were used as templates for a better option as described earlier.
What is important is does it look right when completed? I have to say yes it does. Crescent Models are a new manufacturer and must be applauded and encouraged for their effort.
Without modification the finished model will look good, with a little modification, the final result will be even better. It was an easy build with the exception of my own mistakes, and when completed does look convincing. In my opinion, no kit is perfect.

1/43 scale is always about compromise because of manufacturing techniques and final product cost; so all things considered, Crescent have done a reasonably good job.
Would I buy more? Yes most definitely and I have done so. At last I have an alternative to die-casts (uuuggggggghhhh!) for recent Williams subjects in my collection. Let's just hope that Crescent will continue to produce and develop good quality models; there is little doubt that they will get better with experience.
Thanks to these new Crescent releases we are now nearly up to date with current Williams' but what about some of the older ones. I would love to have the Iso IR01, FW02, FW03 and FW04. FW05 was a bit of a dog; so don't hold out much hope of that reappearing! I do have a John Day of the Hesketh 308C that I modified into a FW05, but was never too happy with it because I had to hand paint some of the markings as no suitable decals were available. Here's hoping!