L66TEY

Hi Neil,

PM sent - first dibs 

Chris

Yes Simon,

Ive had the same thought train about having the NACA Ducts positioned symmetrically to each other - but have decided "function over form" will apply. 

I believe you are spot on re LHD and the flat pedal box is due to needing the space for the airbox. 

I suggest this approach could also be applied to RHD, but I guess Caterham have not applied this change as there is no requirement to do so - apart from me wanting the space for a back to front NACA Duct 

As it happens my Caterham has the "aftermarket K&N" approach.

Thank you for the tip on the "death wheel", was thinking of using a Dremel or Fein Multi-Master. 

Either way, I'm going to need a bucket load of luck 

I've not cut any metal, but have "placed" the NACA duct in its likely position. 
 

Simon,

Another point....

In relation to cutting the awkward shaped hole in the bonnet - being a novice at this - what tool is best to use?

Hi Simon,
Ah, that explains it, great to know we've got an ex CTI'r amongst us. 
I've got the NACA Duct and also access to a 485 bonnet. 
This has confirmed that there is symmetry across the two sides, but only if installed at the same distance from the bulkhead. 

However, the dept of the NACA Duct in that position on the RHS won't work - as the pedal box means there is not enough space for the NACA Duct. 

So as far as I see it, I have two options;

1) Risk trying to fit the NACA Duct further away from the bulkhead - albeit the curve of the bonnet reduces along its length, hence may not be a good fit. 
2) Seek to reduce the size of the pedal box - ideally flat as per the LHD Caterhams (eg 485). 

Hence, any input on this also appreciated, eg why is the pedal box "flat" on LHD, yet "boxed" on RHD. 

With thanks

Chris 

Hi John,

I'm interested - please do post or dm some pics and price. 

With thanks 

Chris

Hi Simon,

Now I'm intrigued, when did you fit one (or more) of these?

As I'm about to embark on cutting the hole, having established that Arch Motors don't cut it when the manufacture the bonnet. Instead, I've understood the NACA duct hole is cut at Caterham Cars. 

Do you have any insight on this?

Having eyed up a NACA duct against the RHS the contour works - albeit need to be careful about where along the bonnet it is positioned as the radius of the bonnet front to back is not constant. 

All help/input v much appreciated. 

Chris 

Yes, its quite an awkward shape, however the one on the RHS for the Drivers footwell venting will be facing "backwards" so as to draw air out.

I started another thread on this some time back, ref;

NACA duct installation advise | Caterham and Lotus Seven Club (caterhamlotus7.club) 
https://www.caterhamlotus7.club/forum/techtalk/naca-duct-installation-advise

Chris

You know me too well Al  

Can never have enough Carbon, and hence I intend on adding not one but two Carbon NACA ducts 

One for footwell cooling, and one to feed cooler air to the air filter/plenum 

Thank you all for your comments. 

I've since established that Arch have not made this type of airbox, however Boss Racing have - hence I've contacted Rob. 


Though you are quite right Stu, it just needs a bit of analogue CAD attention. 

In regards to the inlet, as I have no side holes of my bonnet (2010 R300D), id be looking to adding the Caterham NACA Duct that the 485 model features. 

Though it will mean bravely cutting a hole tricky shaped hole in the bonnet. 

Has anyone created an airbox like the one in the image below, I'm looking to replicate it  

Hence, hoping someone would be kind enough to share the CAD Drawing for the sheet metal. 

With thanks

Chris 

Has anyone created an airbox like the one in the image below, I'm looking to replicate it  

Hence, hoping someone would be kind enough to share the CAD Drawing for the sheet metal. 

With thanks

Chris 

My "small" plate measures 340mm x 90mm

Hi Richard,

The paper work I have from Classic Additions gives the following description;

"Super Soft Stretch Indoor Car Cover"

Chris

Hi Richard,

Sorry I've had a change of heart on this and will be keeping the cover. 

But highly recommended Classic Additions. 

Chris 

Hi Terry,

As I've only fitted mine once - I'd be happy to consider letting it go. 
The cover features a custom print and is presently in the bag it was delivered in from Classic Additions.
Could do with the funds to pay for some work on the Diff.
Please DM me if you are interested

Chris 

Thank you David and Ian,

Having removed the metal filings from the scored area with a magnet, I'm definitely going to change the Diff Oil - as expect there could be more inside. 

Now need to decide on syringe or Diff removal approach.....

Chris 

Hi David,
As per your suggestion I checked for the grooves and Im pleased to confirm they are intact, albeit the bush is a little pitted. 
Based on this pic - what are your thoughts?

Chris 
 

Thank you David,

Whilst not great news, appreciate your help on this. 

Just spoke to Quaife and understandably their Lifetime Warranty doesn't cover the bushes in the Ford Housing. 

Sounds like I'll need to remove the Diff after all and get this sorted.

Chris 

PS Hand on heart, Im not guilty of the suggested "donut" cause :O

Hi Kelvin,
Shame to hear you are selling - hope to see you back in a Caterham again one day. 
For now, please share some pics for us to appreciate your car, also interested in whether you got the half doors fitted?
Chris 

Driver side Driveshaft finally removed 

However, it's become clear why it was a struggle to remove. 

Does this mean a new Driveshaft and/or Diff Rebuild??
I hope I'm not kidding myself but I'd like to think it's simply been caused by some crud getting stuck between the driveshaft and Diff Housing. 

As always, all feedback/input appreciated??

Sorry Matt,

Another member got there before you. 

I bought my replacement from Caterham - at great expense 

Chris

Progress made, with the passenger side driveshaft now removed (with ease). 

On the basis of the Quaife ATB Diff being "fit and forget" I'm inclined not to remove it - adopting a "if it ain't broke, don't fix it" approach. 

Chris 

I should add the mount is for a "Pitking" mirror and it's attached to the screen via two 3M sticky pads. 

Hers some more pics 

Hi Dennis,

Im not Caterham Joe, but have been referred to as Caterham Chris  

Happy to assist as applicable. 

If you like the mirror mount I designed, then I'd be more than happy to share more info including the CAD file if you wanted to have one made. 

Chris