Pedal Box Modification

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L66TEY
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Pedal Box Modification

Hoping someone could help me understand what the purpose/use is for "wedge" shaped part of the pedal box?

To me it looks redundant, hence I can't understand why it features two rivnuts and a sealed blanking plate on the face not shown below. 
 



With thanks

Chris 

Wrightpayne
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Fly by wire throttle?

L66TEY
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Didn't think fly by wire was used on RHD (non EU5 reg)?

Or are there specific models eg 620 that features fly by wire??

Either way I plan on removing part of this "excess" metal to make room for footwell venting via NACA duct fitment. 

simon_h
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That is where the electric throttle pedal bolts to. Used anywhere the eu spec went to rhd markets, Australia, Japan etc and with the 160/170 everywhere 

L66TEY
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Thank you Simon,

Thats given me the peace of mind I was looking for to modify the pedal box as applicable, for NACA duct clearance. 

Wish me luck with this mod over the Xmas period Xmas

Chris

Wrightpayne
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Is the duct to let air out or in? Just wondered which way around it should go as don't understand how they work!

Jonathan Kay
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"Is the duct to let air out or in? Just wondered which way around it should go as don't understand how they work!"

It's a "submerged inlet duct". The original intention of the design was to pass air into the duct with the minimum disturbance to the external flow. This was because they were developed for aircraft, and most commonly the ducted air was needed for cooling.

What is happening to the air at any point on the surface of a Seven is up there with:

There be three things which are too wonderful for me, yea, four which I know not:
The way of an eagle in the air; the way of a serpent upon a rock; the way of a ship in the midst of the sea; and the way of a man with a maid.

: - )

Jonathan

From the original 1945 paper:

L66TEY
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Intention is for the NACA duct to take (suck) air out of the footwell.

In this orientation (pointy part backwards) it will (should) work the opposite to when the pointy part is forwards (like the air intake on the 485 model).

There are lots of comments on a separate thread regarding this - fair to say not everyone thinks it will work.....

https://www.caterhamlotus7.club/forum/techtalk/naca-duct-installation-advise

Chris

TomB
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fair to say not everyone thinks it will work.....

It'll look cool though Thumb Up 

OldAndrewE
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There must be some way of testing if this will work (i.e. that it will work as an extract duct) without taking the irreversible step of cutting the bonnet.

Andrew

1985 S3 1700 XFlow.  Undergoing full restoration

Wrightpayne
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Could always look for a damaged but useable bonnet to test it?