6a Front Suspension - back to standard height?!

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RichM
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6a Front Suspension - back to standard height?!

Post by RichM » Mon Aug 19, 2019 8:29 pm

I phoned the Wheel Alignment Centre in Southampton this morning and booked it in for 3pm this afternoon. What a great company. They do a lot of work on classics and sports cars and have done plenty of Scimitars. I thoroughly reccommend them. Th process was quick and pain free, with a nice cup of filter coffee thrown in. And it only cost me £30.

My guess at the shims/ camber proved right, it was pretty much spot on, but my guess at the tracking was way off! A quick adjustment and a spin around the industrial estate showed a massive improvement.

It now steers and tracks properly with much improved ride and handling. Job Done!!!!!!!!!!!!!!
IMG_4262.jpg
Up on ramp
IMG_4262.jpg (259.68 KiB) Viewed 413 times
IMG_4263.jpg
Camber good, toe wrong!
IMG_4263.jpg (296.96 KiB) Viewed 413 times
IMG_4276.jpg
All good
IMG_4276.jpg (296.08 KiB) Viewed 413 times
IMG_4277.jpg
IMG_4277.jpg (241.26 KiB) Viewed 413 times
Thanks for reading, hope my mistakes are of use to someone!



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6a Front Suspension - back to standard height?!

Post by MrGoldtop1960 » Tue Aug 20, 2019 1:54 pm

Good work Rich! Would be great to see you and the car tomorrow at Noggin!
Cheers mate
Kev O


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6a Front Suspension - back to standard height?!

Post by RichM » Tue Aug 20, 2019 10:47 pm

scimjim wrote:
Mon Aug 19, 2019 7:53 pm
Good job :D

I don’t understand why the PO would have fitted 1/2” shims - PAS/non PAS doesn’t affect the camber that much :shock:
Hi Jim, I’m not sure either but he (Badger) did post on here about it some years back. Maybe lowering it by 50-60mm on shortened dampers causes the camber to change?
Either way I’ve now got an inch worth of shims in the spares box! :lol:



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6a Front Suspension - back to standard height?!

Post by RichM » Tue Aug 20, 2019 10:53 pm

MrGoldtop1960 wrote:
Tue Aug 20, 2019 1:54 pm
Good work Rich! Would be great to see you and the car tomorrow at Noggin!
Cheers mate
Kev O
Thanks Kev, I am 100% committed to getting to the noggin tomorrow, I just hope the car is!! :P



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6a Front Suspension - back to standard height?!

Post by Dennis Nicholas » Wed Aug 21, 2019 12:40 am

Ahem......sorry to burst bubble a bit but CASTOR 2 DEG 40 MINS is for MANUAL steering.
POWER is 11 degrees. so you will need to swap some shims from rear to front keeping same number overall to keep camber the same. ( 0 to 1 deg positive camber)
Adding shims to front bolts increases CASTOR.
Tracking should be parallel......no toe in and no toe out with track rods being of equal length. To ensure rack is centralise count number of turns full left to full right then back half the number of turns........with rack centralised, to check "remove plug from cover plate over damper slipper. The guide hole in the rack should be seen in line with the central hole through the slipper" (Quote from Reliant workshop manual).
Perhaps I am not reading the big screen results correctly?

Next repaint where any paint scratched off :D

Dennis
OH and CASTOR not castEr.
Last edited by Dennis Nicholas on Wed Aug 21, 2019 1:16 am, edited 3 times in total.


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6a Front Suspension - back to standard height?!

Post by Roger Pennington » Wed Aug 21, 2019 12:49 am

RichM wrote:
Tue Aug 20, 2019 10:47 pm
Maybe lowering it by 50-60mm on shortened dampers causes the camber to change?
Yes, lowering the front by an appreciable amount will change the camber (it'll go more negative). It will always happen, the same will apply if the springs get old and sag. It's a consequence of the wishbone geometry. So if you've now restored it to standard, it probably will need adjusting.


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6a Front Suspension - back to standard height?!

Post by scimjim » Wed Aug 21, 2019 9:15 am

You seem to have a PAS rack with non PAS trunnions and non PAS caster settings?


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6a Front Suspension - back to standard height?!

Post by RichM » Wed Aug 21, 2019 9:30 am

scimjim wrote:
Wed Aug 21, 2019 9:15 am
You seem to have a PAS rack with non PAS trunnions and non PAS caster settings?
When I bought the car it had:
PAS Rack
Manual Trunnions
Reversed Top Wishbones
Upside down Lower Wishbones
Lowered ride height on adjustable dampers.

Now it has:
PAS rack
PAS Trunnions
Standard orientation Top wishbones
Standard orientation Lower Wishbones
Regular (ish) ride height on adjustable dampers.



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6a Front Suspension - back to standard height?!

Post by RichM » Wed Aug 21, 2019 9:43 am

Dennis Nicholas wrote:
Wed Aug 21, 2019 12:40 am
Ahem......sorry to burst bubble a bit....
Tut, and there I was foolishly starting to research and plan the next job on the list!
I hadn't spotted the CastOr angle on the screen, and assumed (must stop doing that..) that he had loaded up the correct specs into the machine. Perhaps he loaded up the specs from a previous non pas Scimitar. I'll give him a call and get it checked again.
The beauty of this forum is having so many eagle-eyed comrades to check everything over and to make sure that after every Peak of Achievement there is a re-assuringly familiar Pit of Despair :lol:

Somehow I knew this process would never actually end..........................................



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6a Front Suspension - back to standard height?!

Post by RichM » Wed Aug 21, 2019 9:47 am

Booked in again at 4pm, let you know what happens!



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6a Front Suspension - back to standard height?!

Post by AJL Electronics » Wed Aug 21, 2019 10:35 am

RichM wrote:
Wed Aug 21, 2019 9:43 am
The beauty of this forum is having so many eagle-eyed comrades to check everything over and to make sure that after every Peak of Achievement there is a re-assuringly familiar Pit of Despair :lol:
Another point is that you seem to be spraying stuff with Water Dispersant for some reason? I would recommend a good penetrating oil for your workshop in preference. You don't have to buy commercial products (although PlusGas is good). One of the very best is a mix of 50% ATF, even used and Acetone. Otherwise many people suggest neat diesel gives a good account of itself. A Water Dispersant has extremely limited function as anything else although I believe it does remove sticky labels quite well.


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6a Front Suspension - back to standard height?!

Post by philhoward » Wed Aug 21, 2019 11:02 am

GT85 isn’t bad either - but WD40 is sadly only slightly better than nothing at freeing seized components. Because it is better than nothing it appears to work :lol:


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6a Front Suspension - back to standard height?!

Post by Roger Pennington » Wed Aug 21, 2019 11:17 am

RichM wrote:
Wed Aug 21, 2019 9:43 am
I hadn't spotted the CastOr angle on the screen, and assumed (must stop doing that..) that he had loaded up the correct specs into the machine. Perhaps he loaded up the specs from a previous non pas Scimitar. I'll give him a call and get it checked again.
It shouldn't matter what he put into the machine, that's only the reference data, the actual measured data from the car is absolute. I'm surprised that given all the changes you've detailed (see below) that the measured castor angle (if I'm reading your screenshot correctly) should be so low?
RichM wrote:
Wed Aug 21, 2019 9:30 am
Now it has:
PAS rack
PAS Trunnions
Standard orientation Top wishbones
Standard orientation Lower Wishbones
Regular (ish) ride height on adjustable dampers.
I think the difference is a lot more than you could adjust with shims, the main castor-setting device is the trunnion?

Where did you source the PAS trunnions?


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6a Front Suspension - back to standard height?!

Post by scimjim » Wed Aug 21, 2019 12:12 pm

I don’t believe you could physically get the caster that low with PAS trunnions fitted. The pictures also look like non PAS trunnions to me?


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6a Front Suspension - back to standard height?!

Post by AJL Electronics » Wed Aug 21, 2019 12:17 pm

scimjim wrote:
Wed Aug 21, 2019 12:12 pm
I don’t believe you could physically get the caster that low with PAS trunnions fitted. The pictures also look like non PAS trunnions to me?
Some photos do and some don't! If they are stamped "Stanpart" though, wouldn't that make them manual as Triumph didn't use anything else?


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