|
PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
Information |
|
suspension angles/geometryViews : 442 Replies : 3Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Sep 1st, 2017, 14:38 | #1 |
Junior Member
Last Online: Yesterday 16:06
Join Date: Jun 2009
Location: worcester
|
suspension angles/geometry
hi
what suspension angles do you recommend-? I have an estate car so light to drive that over 50mph is dangerous, you can steer with one finger and I'm on 195/65 -15 tyres at 24 psi at front 28 rear. it is supposed to be in spec but the angles are tiny compared to modern cars- I have asked the vehicle inspectors at the annual MOT test to find any play in bushes- they can find none. help steve- I have had car 22 years by the way. and I have had this trouble for about 5 years. Last edited by ciderman; Sep 1st, 2017 at 14:39. Reason: clarity |
Sep 1st, 2017, 16:26 | #2 |
Premier Member
Last Online: Oct 23rd, 2023 21:39
Join Date: Apr 2007
Location: EXETER
|
I'm surprised to hear there is no play in any of the bushes, but there are a few that I would most definitely recommend changing prior to making any adjustments. I make this recommendation not because of wear, but they go brittle and don't do their job properly!
Firstly and most importantly, the upper control arm bushes (upper wishbone). From inside the bonnet, you can look down to them and where they are located, particularly the ones next to the hot exhaust manifold - means they turn to brittle old nothingness in very little time. Their purpose is to control the camber of the front wheels and when bad, the front wheel camber changes too easily giving a vague feeling and quite sensitive to going off straight ahead with undulations in the road. If the camber is wrong, you will be able to set the toe correctly in the straight ahead position, but it's likely to be wrong once you turn the steering wheel! If you can be bothered, looked up the Ackerman angle. Doing a bit of advertising for our man Dai on this forum, these are the best out there as they are the same hardness as the standard rubber ones, but being polyurethane last well: http://www.classicswede.co.uk/Top_Wi..._11087428.aspx Once you've done that I recommend camber at 0 degrees, but some prefer 0.5 degrees negative. You should sort your camber out prior to doing the toe which should be 0 - 2mm toe in. Mine is at 0. At the back, the estate rubber bricks as I call them last OK, but not indefinitely and neither do any of the little trailing arm bushes or control arm bushes. The trailing arm bushes, if worn, can give some affect on straight ahead vagueness, but not a lot. The control arms are more to do with rotational stability of the axle, so if bad they just make it noisy back there. However, the Panhord Rod bushes do not last and they wear oval shaped. Once oval, they allow are certain amount of side to side movement of the whole back axle. They're cheap and I'd just change them. You can't adjust the toe on the back axle or any other angles.
__________________
2006 XC70 D5 Manual 1968 Amazon Estate, B18A + Overdrive 2019 V60 D3 Momentum Pro Manual 1970 Amazon 2-Door 1970 142DL Last edited by swedishandgerman; Sep 1st, 2017 at 17:10. |
Sep 1st, 2017, 17:36 | #3 |
arcturus
Last Online: Yesterday 07:40
Join Date: Mar 2006
Location: Sagres Portugal
|
On this subject, just how good are gauges like these.
https://www.ebay.co.uk/sch/i.html?_f...gauge&_sacat=0
__________________
life's too short to drink bad wine |
Sep 2nd, 2017, 09:14 | #4 |
Senior Member
Last Online: Oct 4th, 2023 06:43
Join Date: Dec 2008
Location: Banbury
|
Camber gauges
To be of any use the car needs to be on a level patch of ground.In my old workshop (which was by no means level)I would mark where the car was sat,remove the car,and then check the level of floor with a long steel beam and a spirit level.I usually levelled it up by using old Perspex number plates to shim the floor level,and the roll the car back onto them.Took some time but at least I knew where I was starting from!
|
The Following User Says Thank You to davidw6092 For This Useful Post: |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|