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technique

It All Started Here
Building Marsh Models’ McLaren M1A
by Wayne E. Moyer

By 1964 it was obvious to European drivers that while fame could be won in Europe, fortune was most easily found in American racing. “Professional” sports car racing was coming of age in the United States, where the “West Coast Races” at Riverside and Laguna Seca paid big money by European standards and Indianapolis paid really big money by any racer’s standards. Most Americans hadn’t seen a foreign driver until Jimmy Clark came to Indianapolis in 1963, but more and more “sporty car” drivers made their way across the Atlantic as first the United States Road Racing Series and then the Can-Am series made it possible for a driver to earn more in one or two races than he could in a full season of Formula One.
One of the first to see the light was Bruce McLaren. By 1963 McLaren, a works Cooper driver, had aspirations of building his own car and had pulled together a small team of dedicated “car nuts”. Roger Penske had run away with the 1963 West Coast races driving a barely legal “two seat Formula One car”, the Zerex Special Cooper Climax. McLaren bought that (after all, he understood Coopers!), made it comply with the new 1964 rules, and replaced the Climax engine with an aluminium-block Oldsmobile V-8. It was a good idea, but the early 1964 “Pro” races showed it to be a year or two too late.
Not daunted, Bruce and his friends quickly designed and built a simple tube-frame rear engine chassis that was both lighter and stiffer than the old Cooper and raced the “McLaren Mk 1” in the final 1964 USRRC races. Although the McLaren-Olds was usually the fastest car in the field, it failed to win a race against Chevy and Ford-powered Anglo-American hybrids and Jim Hall’s new Chaparrals. By now there were quite a few would-be racers who wanted a competitive car for the USRRC and for the Can-Am races on the horizon. Hall made it very plain that there would be no “customer” Chaparrals, and the next-best thing appeared to be the McLaren.

McLaren didn’t have any “production” capability, so a deal was struck with Elva Cars to put a slightly revised Mk 1A into production. The team cars remained “McLaren Mk 1’S” while the Elva-built cars would be sold as “McLaren-Elvas”. There were two changes; McLaren-Elvas would have fibreglass bodies instead of aluminium and they would be built to accept Chevy and Ford engines as well as the small-block Olds. Elva built and sold 24 Mk 1A’s before switching to the more aerodynamically effective Mk 1B and the stiffer Mk 1C. Although in truth there were only two “true” McLaren Mk 1’s built, all marks of the McLaren-Elvas were simply called “McLarens” over here in the USA until Bruce unveiled the M6A that would make everything, including the lovely Lola T70s and those early McLaren Mk 1’s, obsolete.
Given the number of McLarens (OK, McLaren-Elvas) built expressly for American racing, it’s not surprising that many racing stars were seen in one of them at one time or another. That includes Graham Hill, who qualified John Coombes’ “McLaren- Chevrolet” (yes, it was really a McLaren-Elva) in fourth place for the 1965 L.A. Times Grand Prix at Riverside and was holding his own until the car shed a wheel on lap 24. Having already modeled Roger Penske’s original “Zerex Special” Cooper-Climax and Bruce’s more legal Cooper-Olds, Marsh Models has now released several multi-media kits of McLaren Mk 1’s and 1A’s. This one (MM066) is the car driven by Graham in that 1965 USRRC “Times Grand Prix”.
The kit’s contents should be no surprise to anyone who’s built a Marsh kit in recent years; I counted 65 parts starting with a very smooth, well-detailed resin body. In addition there are 20 white-metal castings, 4 black resin wheel/tyre castings, 4 turned alloy outer wheel halves, 6 chrome-plated pieces, 22 photo-etched parts including 4 heavier “chassis tube” pieces, vac-formed windscreen and headlight covers, and the usual screws and axles.

The decals are quite simple but include excellent period “Firestone” sidewall logos complete with yellow circles— more about these later. Finally, there’s a double-sided instruction sheet with an exploded view, complete parts listing with painting information, three color photos of the complete model, and a real paint chip.
It took only a couple of minutes to get the body ready to be washed; there was a tiny mould line under the tail and some “ragged edges” inside the radiator exit duct. The white-metal castings were equally good and took only a few more minutes; I found no problems of any kind here. I glued the rear spoiler to the body before priming everything, and was delighted to find that a single primer coat was all that was needed. No filler of any kind was required. I didn’t find an exact match for the paint, described as “ghostly grey” in “Riverside Raceway, Palace of Speed”. It’s very definitely an “off white” but with a grey tint rather than the brown hue of the much more common Ford “Wimbolden White”. I mixed a very small amount of black into some “refrigerator white” to match that very handy colour chip.
The interior tub is folded up from a single photo-etched piece with the seats, “chassis tubes”, dash and other details added. Although the instructions indicated building this up on the baseplate, I found it was easier to fit the tub to the body (check to make sure the baseplate will fit) and then add the rest of the interior before attaching the baseplate. Everything else fitted just as it should until I hit the wheels— or more specifically, the rear wheels. The inner diameters of the rear wheel/tyre castings were about a millimeter greater than the outer diameter of the machined wheels, leaving a noticeable gap between the wheel and the sidewall when the wheel was glued in place. After scratching my head for a while, I mixed some Testor’s Model Master acrylic flat black into a couple of drops of Kristal Klear (MSKK) and used that to fill the gaps. It worked like a charm, and I’d think that Tamiya paint would work for those who live where Testor’s water-based paints aren’t available.
I drilled holes to mount the mirror supports in the windscreen before cutting it from the vac-formed sheet. Once cut free the big windscreen fitted well, as did the tiny headlight covers.

The decals were very simple and easy to apply but the side number disks were slightly too large and had to have a “notch” cut out for the fender scoops. It wasn’t until after I had the model completed per the instructions that I found an excellent photo of Hill and this car in the “Riverside” book mentioned above. I don’t like to disagree with John (I invariably lose!) but that photo shows somewhat different markings and two more small rear fender scoops just above the black lower panel; brake cooling scoops, I’d bet. The number disks (same number) are on the door, not the rear fenders (there are no “G. Hill” decals), and there are three small sponsor decals on the rear fenders, with the “extra” one being a Goodyear badge, making those beautiful Firestone sidewall decals somewhat out of place. That photo shows the fresh-air cockpit ducts that are on the model and a large “ding” on the bottom of the nose, so I suspect it really is a Riverside race-day photo. My guess is that the model is based on the car as it showed up at Riverside. Practice (it was always hot at Riverside) showed the need for more brake cooling. The added scoops required moving the numbers to the door, replacing Hill’s name, and evidently either Goodyear tyres were faster or they paid more sponsorship money. Like I’ve always said, race cars change, not from race to race, but from practice session to practice session!
(We’ve checked with Marsh and they say that the information they had was supplied by an avid Graham Hill collector who was sure that the photographs were from Riverside. They are now looking into it in even more detail and we’ll let you know what the outcome is. Ed)
The overall lines and other details match that photo (and in major details, photos of other McLaren-Elvas of the time) and all dimensions are within 0.05 inch or less of perfect 1/43 scale. Except for the rear wheels, this was pretty much a “shake the box” kit and with that photo in hand it would be easy to add the rear fender scoops and move the decals to model the car “as raced”. Marsh’s excellent multi-media kit is available from GPM, of course.

Lists of all CanAm or McLaren subjects are available on request from GPM.