Questions tagged [suspension]

Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. -Wikipedia

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6
votes
1answer
556 views

Why are shock absorbers in wishbone suspension systems mounted on the lower control arm?

Is there any particular reason (relating to the sprung mass) for having this kind of setup? I am yet to see a wishbone suspension with the shocks on the UCA.
7
votes
1answer
2k views

Alignment and Lower Control Arm Bushings

I replaced my struts, strut mounts and tie rod ends, then went and got an alignment before taking my car to it's inspection. At the inspection, they found that the nuts for the tie rod ends hadn't ...
10
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4answers
11k views

Effects of sway bar stiffness on rough, uneven roads

I just read a really nice write-up on sway bar physics. I also watched a video discussing suspension behavior on rough roads. Let's assume the following: A front-wheel drive vehicle being driven ...
7
votes
1answer
7k views

How bad is this strut mount damage?

I noticed a crack in the strut mount rubber of my 1999 Volvo v40. The suspension often creaks when going over speed bumps (and sometimes it doesn't) though I'm not sure it's the fault of this mount. ...
1
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0answers
203 views

Lower control arm mounting bolt replacement size. 2004 Mazda B3000

Need to know what size bolt for Mazda B3000 lower control arm mount
5
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0answers
132 views

Is a parallel 4 link safe compared to a triangulated 4 link?

After researching the topic the closest article I've ever been able to find was written by Ridetech: "What’s the difference between a triangulated 4 link and a parallel 4 link?". However, a concern ...
7
votes
1answer
3k views

When installing air ride suspension how is pinion angle set on the axle?

Saw we had a Motor Vehicle Stack and I thought it would be fun asking some hot rod related questions. One issue I've always faced in building a hot rod truck is determining how the pinion angle ...
4
votes
2answers
9k views

My Ride is Still Very Bouncy after Changing the Struts and Strut Mounts

I just changed the front struts and strut mounts on my 98 Mazda 626. The old ones were completely shot. While I noticed an improvement in the ride, it wasn't nearly as much as I expected, and quite ...
11
votes
1answer
5k views

Motorcycle Speed Wobble - How do I figure out the problem?

I have a 2005 GSXR 600. I took it for a test drive and the head shakes around 65mph or so and then goes away when I go past that. It's worse when I'm slowing down without the front brake. When I ...
8
votes
1answer
3k views

Ohlins Rear Motorcycle Shock - How do I setup, care for and tune it?

I have a 2005 GSXR 600 I'm getting on the road. I bought an Ohlins rear shock for it and ordered the spring to match my weight. I can't figure out the low/high speed or the rebound/compression ...
11
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3answers
32k views

What are the advantages of upside down forks?

Recently, I have come across many bikes which have upside down front forks. From browsing around the internet, I was not able to get a concrete answer for why it is preferred over conventional ...
3
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0answers
202 views

What Damage may Accompany a Broken Axle

I was looking at buying a 98 Honda Shuttle with a broken right side axle, and was wondering what other damage I should keep my eyes open for which might normally be seen together with a broken axle.
11
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2answers
13k views

How Important Are the Rear Shocks / Struts

When people talk about changing the shocks or struts, it's usually the front ones due to comfort, handling and safety reasons. But what about the rear ones? How much of a problem are worn out rear ...
10
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2answers
16k views

Do I need to replace both front struts if one is OK

I have a car that is 7 years old and unfortunately hit a curb which bent the front strut on the drivers side. Do I need to replace both struts? Or just the damaged strut? It is similar to this ...
8
votes
1answer
2k views

How do I get the sway bar link to line up with new strut and spring?

I am swapping the struts and sway bar links on a 2006 Toyota Sienna AWD. I got the first strut in place and started to put the sway bar link on but it does not want to line up with the mounting hole ...
5
votes
1answer
3k views

What Front End Work Requires an Alignment Afterwards

What Front End Work Requires an Alignment Afterwards and in what case can you take measure to avoid having to do an alignment? For example the Haynes manual says you can mark the strut mount and the ...
7
votes
1answer
349 views

Displacement sensors for car wheel and datasheets

Probably title says it all, but I am on my design work for car suspension and cannot find a good displacement sensor for each of the wheels of the car. I tried to look up for accelerometers, which can ...
9
votes
3answers
629 views

Magnetic Active Suspension or Magnetorheological Damper

GM developed magnetic dampers for the Corvette several years back. What is magnetic active suspension and how does it work? I understand there is a magnetic fluid in the shocks but how, deep down, ...
11
votes
3answers
2k views

How Urgent is it to Replace Worn Out CV Boots

I recently noticed that what I think are the inner CV boots on my 99 Nissan Almera have started coming apart: They were still in one piece this past August when I took the car for inspection, so this ...
7
votes
1answer
138 views

Identifying Suspension Parts on my Mazda 626

This is a continuation of my question regarding What to Check When Replacing Struts, but specific to my 98 Mazda 626 2L. I want to make sure: I've correctly identified the parts What is their effect ...
7
votes
1answer
3k views

What makes a worn car shock spongy and soft?

I'm unfamiliar with car shocks. In motorcycles many rear shocks are charged with nitrogen which acts like a spring. I've seen motorcycle shocks that I've rebuilt have the correct amount of nitrogen ...
4
votes
1answer
192 views

Wheel Positioning - Camber and Toe

I have a baseline of information regarding camber and toe. Why would I add more or less camber to my wheel unless I'm a NASCAR drivier making only left hand turns and want better traction for that ...
7
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2answers
1k views

1988 Jeep Wrangler - How do I do a DIY alignment?

Have a friend with a '88 YJ. He wants us to tackle an alignment job on it. It's pulling to the right. We can see the rear axle is not aligned and tire rubs on one side. It looks like it might be ...
11
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1answer
534 views

1968 Beetle Front Shocks (Koni)

What are the correct size Koni front shocks for a 1968 Beetle at stock height? I purchased the (red) Koni D 80-1787 which Koni's site recommended as a stock shock replacement. My mechanic says ...
6
votes
1answer
441 views

Load on bed of pickup for extended period of time

I just got a Toyota Tacoma 2012 Sport long bed. I'm an artist and I make driftwood horse sculptures. I have two horses on the bed of the truck currently which comes to about 500 lbs. I intend to ...
5
votes
1answer
3k views

Differences between pullrod and pushrod suspensions - Pro's and Con's

Can someone please explain the differences between a pullrod and pushrod suspension and provide the pro's and con's of each configuration? Typically these suspensions are used on open wheeled ...
4
votes
1answer
26k views

Consequences of failing to replace bad struts and sway bar bushings

My car is kind of a beater and I don't want to pour money into it. Apart from a bumpy ride, is anything really bad going to happen if I don't replace these parts? For example, will this put a ...
3
votes
1answer
837 views

How to remove front forks on motorcycle

I've got my motorcycle up in the air about to pull the frame up off the engine but I need to remove one last thing. I got everything taken apart except this center bolt holding the front forks on. ...
3
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0answers
116 views

Terminator 2 1990 Harley Davidson Fatboy FLSTF technical information [closed]

I am doing a project for class about the Harley Davidson Fatboy, and I need to find the values for the spring constant of the bike used in Terminator 2, and whether or not it used a custom suspension. ...
2
votes
1answer
3k views

How do I stop my shock spring from rubbing?

I replaced the passenger side front shock on my 2009 Mazda 5 almost a year ago. It has been making noises, and upon inspection I see the coil is rubbing on the nearby metal. I don't know how to check ...
2
votes
0answers
87 views

How involved (crazy) is it to lift my Pontiac a couple of inches?

I'm a pretty experienced DIY-er, but I'm not familiar with the process for lifting a car. How involved is the process for just 2-3 inches, and can it be done for a vehicle that doesn't necessarily ...
6
votes
2answers
2k views

Fixing vibrations caused by replacing springs?

I am slowly restoring a 2000 Jeep Cherokee Sport with 97K miles to use as a winter/light towing vehicle. I had some sag in my coil springs and leaf springs and the shocks were shot. So I had my ...
4
votes
1answer
82 views

Coil Spring Load and Ride Quality

Is there a difference in coil spring load between different engine options for the same model truck? For example, I have a 1993 C1500 with a 5.7L. Can I use coil springs from another 1993 C1500 but ...
6
votes
1answer
4k views

How can I increase the ride height of my vehicle?

2001 Buick Regal It already has a naturally low ride height, And I feel like I've lost some over the years. The suspension is stock with the exception of new shocks I installed about 6 months ago. ...
2
votes
2answers
7k views

Does hitting the exhaust on bumps (Bottoming Out) damage my car?

I see hundreds of exhaust scrapes on speed humps and things, or general gashes in the direction in which cars travel over them. Does hitting the exhaust on bumps damage the car? It's probably ...
1
vote
2answers
1k views

Does “bumping” up and down a kerb damage my car?

My driveway does not have a dropped kerb, so every day I have to bump up and down the kerb. Does this do any damage to my suspension or tyres doing this every day? If I do it quickly (say at 5mph), ...
2
votes
1answer
946 views

Is it safe to lower the S550 (2015+) Mustang by 1" in the northeast US?

I have seen 5.1" and 5.9" listed as the ground clearance on the S550 (2015+). I don't know which is true, but I would like to lower the one I have ordered by 1" to improve handing. Is this safe to do ...
3
votes
2answers
6k views

How to make ride less bouncy?

In my 2003 Opel Agila, the ride is really bouncy. Whenever I go over bumps in the road, it feels like I am almost out of control. It is generally a bouncy car, but it this one seems to be worse than ...
0
votes
2answers
105 views

05 jeep wrangler rear sway bar connection is broken

05 jeep wrangler .The link that connects my rear sway bar to the rear end housing. What's it called. where can I buy a replacement. To be welded or fit in.
7
votes
5answers
26k views

Car pulls to right when letting go of accelerator?

I'm driving an old Grand Voyager minivan temporarily, and notice that when I accelerate then let go of the accelerator, the car pulls slightly to the right, and I have to correct it by steering a ...
3
votes
1answer
85 views

Repeated rear bearing hub assembly failure

('04 Cavalier; 120K miles) I'd been having a whining noise on (highway) left turns. I found significant play in the right rear hub assembly, which I replaced. In less than 200 miles, the same ...
3
votes
7answers
38k views

severe tire shake at highway speeds under acceleration

I have a 2005 Honda Odyssey with 201000 miles. At speeds above 60mph there is a heavy vibration from the front wheels. It is gets worse when accelerating and will smooth out immediately upon lifting ...
2
votes
2answers
20k views

Crackling/popping when wheels move at slow speed (e.g., rolling forward in drive)

My suspicion is that there is something loose (pebble, rock, or some other small, foreign object) behind the hub cap, but I hear a crackling or popping sound (almost like Pop Rocks or Rice Krispies) ...
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2answers
419 views

Which cars are more comfortable? [closed]

If you're driving for around 4 hours continuously which types of car would stand out in comfort? For example sedan or suv, or any other type. Definition of Comfort: Less noise Ease of getting in and ...
1
vote
1answer
177 views

When to get an alignment

Sometimes it can be hard to tell when your vehicle needs an alignment other than when there are obvious warning signs. For example, steering wheel off center when driving straight, car veering to one ...
1
vote
1answer
74 views

turn-sensitive road noise

'04 Cavalier, 115K. Tires are decent, and don't seem to be wearing unevenly. Low-pitch droning noise at highway speed. Originally, this was only when steering left; but now, also when going ...
5
votes
1answer
725 views

Rust underneath rear of car (Toyota Mk1 MR2)

I have recently acquired an old (1989) Mk1 Toyota MR2 and took a few photos of the underside rear of the vehicle. There seems to be a fair amount of rusting on the rear axle and gear box: gear box/...
2
votes
1answer
87 views

Suspension broken - attempting triage

My wife's Honda Jazz hadn't been driven for a few days, and on driving out of our street yesterday there was a large clang and the front right corner dropped an inch. Turning the wheel lock to lock I ...
1
vote
2answers
142 views

New struts on a 2000 model year car with 225k miles, replace coils?

Should the suspension coil springs be replaced on a Toyota Celica that is 15 years old and has 225k along with the struts or do the coils never really go bad? How about the top bearing plate?
15
votes
3answers
10k views

What are the Advantages of a Single Side SwingArm on Motorcycles?

I have noticed that Ducatis , Honda and Triumph have bikes with a Single Sided SwingArm Much like most of the scooters. Are there any advantages of following this design , if so why are not all ...