My 72 Europa SS

[Sofa King]

Sandyman, I think I could make the type 62 hood work. I like that it has Lotus DNA.

Certified, you are probably right. I will probably need a combination of both.

Since I have a spare hood, I can experiment with vents without disturbing my already painted hood.

[dakazman]

  Picture this bonnet inset. Keeping body lines too.
Dakazman

[gideon]

Banks list a ducted bonnet in their online catalogue at 271.40 gbp.  I think it is probably what Nick74R used for his build.  There's a good pic of the bonnet in this post

http://www.lotuseuropa.org/LotusForum/index.php?topic=2365.msg24476#msg24476

The other advantage of this arrangement, aside from increased airflow over the radiator and cooler brakes, is that it provides some downforce at the front with little drag penalty.

[Sofa King]

I like the look of the Banks hood. I think that I can duplicate the look using my spare. I would be hesitant to buy the Banks hood due to the structure of my frame.

I have also looked at the Elise and Evora vents. Both might work!

[Certified Lotus]

You need to remember that racing aero dynamics are much different from street aero dynamics. In racing your always moving at a rate of speed that creates pressure and air flow. Street driving not so much. Be careful on designing ducting systems that don’t do anything unless your at speed. Electric fans are important solutions for a street car.

[Sofa King]

The engine runs very cool, so the problem is just getting rid of the heat generated by the radiator. I think that the Banks style vent would take advantage of the fan that I already have. I plan to run it without the hood for a drive on a warm day, to make sure that opening up the hood solves my problem. Then I’ll worry about building a vent that duplicates any success that removing the hood generates.

[Sofa King]

Finally had a chance to put the car on a scale. It weighed in at 2075 lbs. it’s about 200 more than what I estimated / hoped.

[BDA]

That's still A LOT lighter than any current car!

[jbcollier]

Front to rear ratio?

[Sofa King]

I just put it on a scale at a local mulch and stone place. I probably could have weighed just the front or back wheels, but I didn’t have any to wear out my welcome.

[Sofa King]

I’ve seen estimates that GKN 47D weighed in at about 2000 lbs, so I didn’t do too bad.

[Rosco5000]

Was the weight with you in it?  How much fuel do you figure you had on board?  Most weights that are posted are dry weights I believe.

[Sofa King]

That is definitely with fluids. Probably about 5 or 6 gallons of gas. I don’t believe that it included me, but I was wondering the same thing after the fact. I pulled onto the scale and then got out to look at the readout. I assume that it was showing the weight as it sat and not the weight as I pulled on.

[Sofa King]

Made it to Cars and Coffee this morning at Corsa Performance. Great people great cars! I had a blast.

[BDA]

I'll bet you turned quite a few heads - straddling between the sports car and hot rod worlds!