Broadspeed & beyond


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First of all I want to wish everyone a great 2011, and safe motoring to all.

Secondly a Broadspeed update:

The weather has forced me to move indoors, and work on small parts of the car. Mainly making technical drawings for special parts, that are no were to be found. The hard part of making a proper replica of a car that is so obscure, is getting the information, and exact specifications.

I was lucky enough to be able to get the opportinity to see the real car in the museum and take lots of pictures and measurements of several significant parts that are unique to the two 1977 cars. Actually only to the Number 3 car, because the Number 4 car is the dry sump car, and is different as well, but the basis is the same.

First part on my list was the intake manifold, as I already had the exact specification for that, so that made it a lot easier. They are totally different to the stock intake manifolds, as they have a 4 throttle body set-up.

The manifold also incorporates parts of the mechanical Lucas fuel injection, but that is a really big problem, because I do not have this particular injection system. The second problem is, as you can see in the picture, everything that is normally in between the intake manifolds. I have seen how they did that, and I will tackle that task later when I’ll build up the engine.

The fuel injection system is somewhat of a crude version of the modern systems these days, with the principle of a diesel injection system. It uses a metering unit that is driven by the camshaft, and that distributes the fuel to every cylinder separately, through the hoses you can see in the picture. In fact it’s much easier to understand because it doesn’t use sensors or any electronic settings .

The start of the manifold fabrication

 

I then began working on the fuel tank, also lots of aluminium. I had a freind mill me the filler caps on his lathe, and I am in the lucky position to be able to weld aluminium at work, so in my spare time I can do most of the fabricaton there. The actual fuel cell is made of stainless steel, and was professionally welded by someone who does this kind of work for a living. I cut a hole in it to be able to acces the tank, to put foam in it, and do maintanace on it when needed.

The stacks seen here, still need some holes cut into them for easy acces and lightening. Then the bowls need to be adjusted to fit the bootlid and the filler necks need to be installed. After it’s all mounted as it should be, it will look like this!

I also made the oil tank for in the boot of the car that holds the oil for the differential. The differential is cooled by one of the radiators in the rear tank covers.

That is as far as the indoor work has progressed.

Some other Broadspeed news now………..

The replica XJ Coupe built by Mr Dennis Robinson has been sold to the Uk again, and will be taking part in several races next year all over the country.

This, I was told by the previous owner in Belgium, who was so kind to let me have a drive in it!

Text and pictures supplied by Mitch Verheyen, Netherlands, January 2011