Welcome

Welcome to my Cobra Replica build blog.
Please contact me if you would like to know more detail as i progress."CR3514@live.com.au"
Regards
Dave

Sunday, April 29, 2018

Getting Towy - Front Tow Hook

Managed another day in the shed, this time to make and mount a bracket to fit a Tow Hook.
I bought an approved tow hook from RaceTech to fit a Mitsubishi EVO, very nicely finished 15mm thick CNC Aluminium profile powder coated in red.

Not too many places strong enough to mount on the CR, particularly on the back which i am still working on, but other CR owners have installed on the front with an angle bracket on the chassis extension frame to the radiator mount, which is more than adequate.


All mounted up, the front Tow Hook exits from under the body between the Quick Jack and the Brake Cooling Duct.









Bracket mounted through the Chassis extension rail with anti-crush tubes inserted.










Originally, I intended to cut out the shape using  good old band-saw and cleanup with a file, but i broke the band-saw drive belt and couldn't buy the right size off the shelf, so clamped the 90x90x10mm aluminium angle scrap to the CNC and cut the profile in 2 runs by flipping the angle to cut bottom and side.

Next time i'm back, i'll put in the tumbler for a day and give it the smooth mottled Titanium look i like.

Bit more thought needed for the rear Tow Hook mounting, but working on it.

Wing and a Prayer

So, its no secret I like the "427" road cars that have done some track duty, One of the road car features ? or inclusions, was the radiator air deflector. The jury seems to be out between it purposed for cooling, or high speed stability, it wasn't homologated with the original race-cars so couldn't be used at the time, but is claimed it assisted the down-force improving stability.


Particular favourite of mine is Bruce Cambern's Infamous CSX 3170.
Photo Credit - Screen Capture From Falken Tyres Video.

In this photo you can see the "Wing" through the radiator opening.




The panel was a folded sheet metal with an aluminium strip bezel along the leading edge.

Photo Credit - Picture of CSX 3170 1/10/2004 from David Borden Collection

I dont have any photos of mounting, but it was adjustable based on other pictures of SCs' with the air deflected towards the top or over the radiator.





My aim was to recreate the look, but not really accuracy of design, what ever the reason was.

Here is my effort.



The "Wing" is an aluminium aerofoil extrusion.
The profile is extruded with provision for a 10mm rod to slide through it, which i then have located in some custom mounts I made to fit the chassis.
The wing is adjustable to deflect up or down by a cam on either end of the shaft which is locked in place to the bracket with a bolt.



In this pic you can see all components,
Body Bracket which is adjustable to centre the assembly in the radiator opening.
Cam bracket which is screwed to the shaft & the Wing with the shaft through it.








The wing is locked to the shaft by screws along the length. of the wing.










The finished installation.











Milling out the Chassis Mounting Brackets on my CNC Router.










Finished Brackets after a tumble to round the edges.