Sunday, 28 March 2010
Saturday, 27 March 2010
Thursday, 25 March 2010
Wednesday, 24 March 2010
My model has been built using an unpainted MMK resin shell. I’ve removed a few ‘body’ extensions and smoothed things down a bit to represent the number 6 car raced at Goodwood. It was also missing a few ‘accessories’ (I didn’t purchase it as a kit), but I’ve managed to gather most bits from my spares box. I’ll be entering it in the April Tendring Tourist Trophy Sports Car event; therefore running gear will be based upon PCS chassis components as required by the regulations. The wheels are the very well made PCS wire examples and the bodywork is finished in several coats of Halfords Sunburst Red. Mike himself is made from a cocktail of various body bits, again all from the spares box.
The stainless wheel etches obviously vary a fair bit. One of todays efforts for the first time broke a spoke, so I now have failures in 3 different areas using the same tool and method, that is, spoke failure, fracture of the inner ring (which is trying to expand) and deformation of the outer ring (which is trying to contract). None of course cause any problem, since the fractures are so small and the distorted rim is modest, and out of sight.
As an aside, it was interesting to note that the edges of the brass etches were much cleaner, and of course just one tiny nick creates a weak point.
The brass etches form perfectly
There has been much changing of angles of tools which is a very labourious process, mainly because my lathe (old Myford) has two operating modes. Normal, where the quick change tool post can be used with its' nice easy tool height adjustment, or abnormal, which is required to make the forming tool angles, where an adaptor plate is required and the quick change post can rarely be used.
The 18" tools are nearing completion, partly because I have three Astons which need them, LM14 in post Le Mans stripped and supercharged form, CMC 614 in a similar state, and a 1935 Le Mans private entry.
Pictures over the weekend?
Friday, 19 March 2010
Below are a few press tools. The parts on the top are the components of a tool to dish the large Penelope Pitlane etches which I will use on my SSKL. The centre part is the female former which is lightly recessed to locate the etch, the centre spigot being to help giude the male former (to left) and also to keep the etch true. To the right is the clamp ring, the main purpose of which is to clamp the outer ring of the etch in order to avoid distortion, though it is made to help guide the male former.
The tool at the bottom is a new double ended one which will be for the 15" etches. The tools take only a short time to actually make, but setting up takes a bit longer. Thus tools for the 18" and 19" etches must be made whilst the set-up is there.
Below is a standard 15" wheel which shows the layout well. It is actally for an early Austin Healey, though pretty well standard for all cars fitted with the type of wheel. inner spokes are at an approx. 5 degree angle, though outer spokes are more extreme at approx. 15 degrees. The only wheels I have seen with dished spokes are Slot Classic, I'm sure most are just flat.
As will be seen the spokes are all toward the outer face of the wheel, indeed they are actually outside the wheel well, a situation dictated by the need to have the wheel bearings pretty central.
I reckon I can get a king pin in as shown....
Thursday, 18 March 2010
Friday, 12 March 2010
Thursday, 11 March 2010
After gazing at it for hours it became obvious that something major was wrong. But I could'nt put my finger on it. The only way to suss it was to take measurements and check that all the reference points were in the right positions. Out came the trusty calipers and I measured everything again. And there it was. For some reason the length had gained 3mm from somewhere. And it was all at the rear of the car. The boot was just too big, too long, which did'nt allow the roofline to terminate where it should.
Wednesday, 10 March 2010
There's nothing really special about this model, other than it being one of the early Scalextric models. It went quite well in its day and if I remember correctly, was a proper slider!
Monday, 8 March 2010
The first image shows those in progress at the moment. The chassis and body on the left are actually a rebuild of the first 'Ulster' I made a few years back. One of the good, or bad things about Matchbox plastic is its' reluctance to be stuck by polystyrene adhesive. I strip paint from polystyrene using old/used brake fluid, proper vegetarian stuff, not the silicon. It also makes a good effort at dissolving/de-stabilising polystyrene adhesive, thus when I stripped the paint off, the body pretty well became dismantled. The centre and right hand cars are new builds, the centre one to be in stripped form, the left hand will have road attire.
The Matchbox Aston is one of a small number of cars for which I have gone to the effort of making a special chassis. The front axle is lightly sprung and carried the front mudguards/wings on road equipped cars.
The Matchbox model is of an Ulster, though can be adapted to represent works racers which were not actually Ulsters. The Ulster is an official copy of a works racer.
Tuesday, 2 March 2010
The right hand car which is actually nearing completion is inspired by the car belonging to a friend from way back, an ex-Le Mans 1965 MGB. I like the car as it is now, not with the awful droop snoot which it raced with, thus this model will be built as a Marathon de la Route car. Probably.
The centre car is the beginnings of a Sebring MGC, or to use its' correct designation, MGC GTS.
The left hand car is simply a body on which to make the 'Special Tuning' spoiler, an extra fitted to most racing B/C/V8 cars today, and will probably end up as an open top racer.
The 'works' hardtop is made from styrene sheet cut into 3mm strips, then built up over the original Airfix hood, basically using the original part as a jig.
The old Airfix model was pretty dire from the day it came out, but is basically correct. The more recent the moulding, the worse they are, so goodness knows what the latest ones are like.
The body sides below the trim strip and the front valence have a fair bit of filling, then a new trim strip is fitted. The paint is basic Humbrol, the trim strip is covered in aluminium foil, the headlamps and radiator grille are from John at Classic Slot.
The chassis half hard 16g aluminium and will have a modified Airfix steering unit fitted.
That makes 8 so far. I think there are rather more than 12 to go......