Learning how to build Lotus Seven replicas...together!
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 Post subject: Re: The Pamilcar
PostPosted: December 10, 2017, 1:06 pm 

Joined: May 17, 2008, 10:55 pm
Posts: 302
Location: canada
As far as the coupe model: I think you've sacrificed outward-upward visibility too greatly, in favour of looks.
...Something I think you are already considering judging by the sightlines.

Unfortunately you are at the aesthetic limit of increases in greenhouse height.
IE, moving the existing dimension windshield upward off the cowl (and raising side window/greenhouse height to match) would look funny.
Extending the actual height of the windshield glass, same.
Leaning back the windshield more might allow you greater upward sightlines. Initially, I thought not ideal aesthetically but "hmmm..." you might get a windblown, expression of speed effect that could be ok, or more than OK.

But, here's what I'd do. I'm keeping in mind yours (and mine, as it happens) vintage airplane inspired "vibe"

Put approx 1/4 round (ie a 90* section of a pipe) polycarbonate additional viewing areas (not legally windshields), comprised of 2 or 3 adjoining partitions above the windshield header. WW2 style plane-reference, you know?

Also, what about giving up on the boat tail, & doing the roof as a roll back? To explain what I mean, look at the overall outline of the Voisin Aerosport and imagine using some type of insulated/corrugated roll up door (can include back window, maybe?). Nice days it would drop back into a roll which would form a rear bumper of a kind. Track days, take it off and leave the weight in the pits. Just brain storming, but... how 'wedded' to the boat tail are you?

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 Post subject: Re: The Pamilcar
PostPosted: December 12, 2017, 1:51 pm 

Joined: August 12, 2012, 6:38 pm
Posts: 1841
Location: worcester county, Massachsetts
yes, I'm giving away some upward visibility, but I'm not especially concerned about that. worst case I'll have to lean forward a bit to see traffic lights that hang above intersections, and I've had a couple cars where I already had to do that. I drive a Chevy HHR as my DD and often I can't see the hanging traffic lamps because of the lowered front roofline. its not that big a deal.

As far as the boat tail, well, yeah, that's a stylistic thing for me. I'm going for that same kind of 1930's vibe that the B-3 styling embraced, and the tapered tail is very much a part of that. I want to maintain the 1930s/hotrod/aircraft mashup styling that the B-3 embodies, and have a definite familial resemblance between the two vehicles.

I'm going back and forth about the body construction, and attaching the flat panels to the frame and roll structure. while it would be nice to keep the full cage of .095 wall 1.5 DOM, its going to make it difficult for me to mate the sharp corners of the top and sides. It would be a whole lot easier to make the body structure out of square tubing, with a braced roll bar at the rear, which the body structure would weld to, and then to which the aluminum body panels would be riveted and RTV sealed. It doesn't necessarily need an SCCA competition legal cage, and I could certainly up the tubing width and wall thickness to increase the crush strength thru the front part of the roof...

In fact, I think I've talked myself into that just now.


My build log: http://www.locostusa.com/forums/viewtopic.php?f=36&t=13941

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