build diary

November 11, 2005: I received an email from Scott Whitehead yesterday.
He'd been looking through my pictures and this one caught his eye. He strongly recommended a diagonal brace to prevent the box section joining the lower control arms from twisting. The front mounting points are well anchored to the bulkhead but there's nothing stopping the rear from being forced out of shape. Makes sense. Since most Sevens are built with a live axle it's not usually an issue. The upper arms should be well located due to the large plate joining them. One more thing to add to the winter refurb list.

In the meantime, I've been designing front suspensions in my head. In the shower this morning, I was working on the new fuel tank design. Baffling of the wide tank is going to be a challenge. Do I put in hinged flaps to allow fuel in to the compartment with the pickup but not out? Caterham apparently uses this trick. Maybe just a swirl tank. A cool trick I read about is to have the return line from the fuel injection dump back into the swirl tank. That makes sense to me, although I can there's potential for the fuel to start to heat up. How do I make all these changes and keep the weight under control? All this design is fun.

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