Door Locks

[SydneyChris]

I have a set of Eberhard 400 series door locks and pins with my kit, which are compliant with the US safety standard (FMVSS206) for door latches and locks on passenger vehicles of 10,000 lb or less.

There was a harmonization process which occurred in 2007, after the standard with released in 2006, which was approved to align the testing requirement of SS206 with the EU regulation 11, covering the same components and classes of vehicle.

ADR 2/01, SS206 and EU Regulation 11 are all based on the requirements that were initially developed:

• SAE J839, September 1998 - Passenger Car Side Door Latch Systems
• SAE J934, September 1998 - Vehicle Passenger Door hinge Systems


Questions.. now having become way too knowledgeable about door locks and their testing requirement

1. Is whether there are any known kit cars in Aus which use the Eberhard 400 series locks
2. Are there any vehicles which are on sale in Aus that use the above lock or....
3. Beyond the purchase of the now obsolete (does anyone know where to source a new pair of) Ford Falcon XD - XF door locks what is the recommended alternative..?

With thanks

Chris

[Modena]

what kit do you have

[SydneyChris]

Factory Five - Coupe 65

[Trickycoupe]

Chris
I had used those locks on my coupe with no issue. I am also pretty sure dave (albanycobra) did too.
You could always contact the ffr rep in aus for clarification as they are supposed to be offering an adr approved kit base and if that is the case would have supporting detail if required

[SydneyChris]

thanks Ricky,

The local agent opted out of the sale for my Coupe, I purchased direct from FFR, as had a number of others at the time I was ordering. The Coupe kit wasn't ADR approved.

I have asked the question to FFR.. awaiting their reply.

The requirement I need to satisfy as detailed by the local engineer..



a) a substantive comparison, by way of part numbers for all the main parts, between a full volume reference vehicle and the subject vehicle,

this would be much easier though,

2/01 Side door latches & hinges Can be sourced from a production vehicle known to comply with this Rule. Must be connected in a manner that will support the applied loads – calculations are sufficient to verify the connections.


Did you have any basis to support the approval to use the Eberhard latches..? Was there an equivalent vehicle in the US or an OEM application that you were required / able to identify to support their installation.

Chris

[SydneyChris]

Ok.. did the calcs.. interested in any thoughts..

Weld joint calcs show nominal stress (less than 15MPa), the retaining plate deflection however is key.

I have used 11,000 and 9,000N loads applied to the structure as per ADR 2/01 and FMVSS 206.

The worst case calc for the deflection of the latch retaining plate, WITHOUT the latch installed, with an unsupported span as to 75 mm in 2.5mm plate gives a calculated deflection of 1.66mm.

With the latch installed and assuming it acted as a supporting member for the purposes of the test with an effective span of 40mm, the deflection reduces to 0.297mm

I do have images of the calc tables, but they wont load.. !

Table 1 - 40mm span


Support: Propped
-----
Beam cross section:
B: 50 mm
H: 2.5 mm
Iy: 6.51E-3 cm^4
-----
Material: Low Carbon Mild Steel, Mild Steel
Young's modulus: 80 GPa
Maximum stress: 370 MPa
-----
Load 1: Point force.
F: 2500 N
A1: 25 mm

= = = = = = = = = = = = = = =

Maximum deflection: 0.2981 mm
At position: 24.04 mm
Maximum rotation: 0.0281 rad
At position: 40.00 mm
Maximum stress: 334.0 MPa
At position: 25.00 mm

Deflection at Y: 0.2966 mm
Rotation at Y: 3.08E-3 rad
Stress at Y: 334.0 MPa


Table 2 - 75mm span

Support: Propped
-----
Beam cross section:
B: 50 mm
H: 2.5 mm
Iy: 6.51E-3 cm^4
-----
Material: Low Carbon Mild Steel, Mild Steel
Young's modulus: 80 GPa
Maximum stress: 370 MPa
-----
Load 1: Point force.
F: 2500 N
A1: 32 mm

= = = = = = = = = = = = = = =

Maximum deflection: 1.66 mm
At position: 39.60 mm
Maximum rotation: 0.0705 rad
At position: 75.00 mm
Maximum stress: 692.8 MPa
At position: 0 mm

Deflection at Y: 1.54 mm
Rotation at Y: 0 rad
Stress at Y: 483.5 MPa

[SydneyChris]

Would look forward to any advice re options for door locks for my Coupe which meet the requirements of ADR 2/01.

Cheers

Chris

[Treeve]

Mk1 / NA MX5?

[SydneyChris]

thanks Treeve... is a good choice if I can get some new ones..