When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I tried to to an estimative calculation on the force, which pushes the upper arm forwards during braking.
Using
g=10m/s
car weight=1700kg
brake load front = 65%
0.5 for one front wheel
wheel diameter=630mm
Brake diameter=355mm (estimating the distance upper-lower balljoint the same)
I get 10 x 1700 x 65% x 0.5 x 630 / 355 / 2
10 x 1700 x 65% x 0.5 (for the brake force at one wheel)
630 / 355 (force ot the brake rotor) - that force must be counterheld by the arms ball joints
/ 2 (force at the upper arm) where the 2 is for the upper & lower arm carrying both 1/2 load.
Sums up to 4'900 Newton, no wonder the bushing closes the gap...
Of course this is estimative only, but shows the ballpark figure.
In real life there will be several things reducing the number slightly, like caster, antidive, friction in bearing & bushing.
The majority of the load must be carried from the front bushing - especially when the rear bushing aready slipped.
on my car,
gaps in front of upper front arms are 1.5mm and rear gaps of front arms are 1mm !
gaps in front of upper rear arms are 1.5mm and rear gaps of rear upper arms are 2mm !!
I will try those Silicone washers (inner hole diameter 26mm - external diameter 60mm)
Prices is for five washers.
, ............
look for the mistake :
i didn't see ANY gaps front and rear OEM upper arms on a Rapide !!!
Last edited by Phil57DBS; Aug 9, 2023 at 09:05 AM.
I would however go for something harder than Silicon with 60 shore.
Basically POM (which is Delrin) or anything else with >80 shore , water-, wear-, and oil/gasoline resistant.
Teflon is probably also a good choice - minimal friction.
Any chance of a photo of the Situation in the Rapide?
Have not gotten anything sorted and have not thoroughly researched for available information.
Based on Marks responses I think the airbag delete will be straight forward. The seat sensor is another issue, but I am feeling more confident about figuring it out. If it all goes to hell I'll have Stuart fix it when he installs the 4 point --- hellooooo Stuart.
Rich - I know you have had the consoles apart. Do you see any reason I could not remove the seat switches and fabricate some blocking plates for the console? I would prefer not to leave the seat switches. If you have the right resistors, mighty as well send me a couple In one of Marks responses he stated the resistor is 2.3 ohms.
TR - thanks for the help - I am making headway . I need to do some more study. Pretty sure I am going to order a set. Deciding on trim level.
Leaning towards matching the Aston stitching in all black.
It's a track car -
chr
I do still need help with that. Even with the resistors installed I get an SRS service warning. From what I understand this is because of the seat position sensors. Is it possible to buy a spare sensor alone or do i need some of the wiring to? To which wire do I have to connect the sensor?
I have not gotten it sorted yet. I purchased a tool out of the UK to check the resistance needed, but have not seen it yet. Once (if) the tool shows up we plan to pull the chairs and wire one of the stock chairs back to OEM and then we will check the other to try to figure what is needed. I'll post our results if we can get it figured out.
An issue with the missing information of the seat track position sensor turns on the SRS light. I now bought a spare part. I'll let you know if this turns out to be the solution.
We installed the seat belt and air bag resistors this week and I finally got to test yesterday. When I started the car (yesterday) to check the electronics I got the "SRS Airbag Service Urgent" and the red triangle on the dash.
My issue is with the airbag. Not sure how the seat position sensor interacts.
As I understand it, the seat position controls the amount of force that the airbag system uses to deploy. If close, less force is used. This is due to some shorter people being injured/killed by sitting too close to an airbag when it deployed.
Seat weight sensor to disable the passenger airbag if light weight is detected on seat. 2006 Vantage was the only one to have a manual "off" switch on the side of the dash. 2007> uses the weight sensor in the seat rails.
Seat weight sensor to disable the passenger airbag if light weight is detected on seat. 2006 Vantage was the only one to have a manual "off" switch on the side of the dash. 2007> uses the weight sensor in the seat rails.
Are you sure this is responsible for an SRS Airbag failure Code? mine didn’t show this code after the seat exchange. Only the seat track position failure was listed.
Seat weight sensor to disable the passenger airbag if light weight is detected on seat. 2006 Vantage was the only one to have a manual "off" switch on the side of the dash. 2007> uses the weight sensor in the seat rails.
Hey this could possibly help me. If I turn the passenger side off I would only need to chase the Drivers Side?
I spent some time during the lock-down to install the V12S arms with shims made from POM C (=Delrin).
First I measured the width of the gap, which turned out to be slightly larger than 1.60 mm on the front bearing (1mm on the rear).
Then I ordered plates of POM C with 1.0, 1.5 and 2.0mm thickness and made some shims.
Mounted it up for testing with the 1.5 mm shims and measured the resulting gap = 0.15mm, which I thought beiing perfect.
There was a unpleasant surprise, when I took out the first arm.
It was apperent that the rubber ring of the original bushing had worked itself a little bit (~0.2mm) into the aluminium of the mounting surface.
In order to prevent the shim from rotating (and further working itself in) I made D-shaped shims for the front.
They suppose to prevent rotation by locking against the inner shoulder of the carrier.
Thus the rotating bushing will rub against the POM C shim.
I will check if they withstand the test of time...
The nice thing was after torqing everything down on all 4 corners, there was still a easy 0.1 mm gap all around.
That should prevent any binding.
First impression after a short "drive to the office" - feels nicely tight and composed...
Thomas
Last edited by TR-Spider; Apr 8, 2020 at 08:00 AM.
In one of Marks responses he stated the resistor is 2.3 ohms.
. I need to do some more study. Pretty sure I am going to order a set. Deciding on trim level.
