Front springs rubbing wishbone
I have already got two new front wishbones from Mark Mathews, which made absolutely no differance. I have set the ride height, and the front springs are rubbing on the inner wish bones, has any one had the same issue, and if what was done to cure it.
Thanks Steve |
Yep, mine rub when on the build stands, and when I had the car on wheels the other week it looked as though there will be problems in use.
I've not raised it with marlin, as I've got a number of other ill-fitting parts (exhaust, gearcable bracket, driveshafts....) to get sorted, and I'm just starting to work through them....... |
Mine is rubbing but it is still on axle stands
I am hopefully getting me brake discs this week so i will find out if it still rubs when it is down on the wheels this weekend I will post the out come when that happens Jerry |
Firstly I'm assuming your using standard GAZ shocks and springs from Marlin....if so then there should be no fouling at all. The springs are pretty close to the susp wishbones when the car is on the deck but they do clear easily.
Have you got the upper wishbones on the right way round?...have a look at pictures on the gallery..there is a shot of the silver demo car and my orange one showing correct orientation. Otherwise...not sure, post a picture up of your installation so I can see it. Rich |
Hopefully it's clear to see my wisbones go inside the coils.
http://www.johndry.com/gallery/main....avId=x8671e3f2 |
Mmmmm....looking at your pics the assembly looks correct.
From memory mine were very close when on stands but once on the deck the clearance increased and is OK. Rich |
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To put the situation with my car in perspective, when on the deck, i have to rotate the springs so that the arm can slot between the coils. Admitedly the front of my car is still pretty light, but to get around this I set the ride height at a "reasonable" level, and still the spring were too close........ especially when one accounts for the fact the arms move either side (up and down) of the static position. I'm watching what happens with Steve's situation before doing anything about mine. |
Springs issue
I spoke to Mark Mathews last week over the issue, and he has reccomended a change in spring lenght to be the best way he can see to overcome the problem. He is working on a car or has recently been working, not sure but the upshot is, he has used 7.5 inch 300LBS springs. I will be looking down this route myself now, so I can move on.
Steve |
My car is still on the build trolley but springs catch on arms aswell, like John's my arm travels through spring!
Steve if the answer is new springs does that mean we will be supplied with new ones from Marlin if we contact them? Free of charge obviously!! Craig |
I don’t think any of us should be happy with that “fix”. If shorter springs are fitted, then the effective suspension travel will be reduced, and the chance of unseating and fully compressing the spring will be increased.
If our cars don’t work with the gaz shocks and springs, and every chassis preceding our has been fine, then the reason for this needs to be determined, and proper remedial work undertaken. A shorter spring shouts “bodge” to me, and is not acceptable. |
just a thought guys, but could u measure the outside diameter of the springs?
are they 2.25"? the assembly in the picture looks correct to me. however you have you're top camber rod end wound out quite a long way. when on the road the upper wishbone does not clash with the springs on mine. HTH John |
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Perhaps one of the people with non-clashing arms could take some pictures with a good ruler / digital vernier in the shot? |
Spings issue
I had not considered the suspension travel issue, I do tend to feel this is a bodge, but I have found trying to get the answer I am looking for so difficult, my initial reaction was one of, on well another hurdle crossed. Judging by the responce of others this is something that will not go away in a hurry, and Mark needs to sort it out. I know some of you have had issues, it would be intersting to contact Mark and see how he deals with your concerns.
Steve. |
Spring issue
I did get a reply from two other buiders who when they measure their wishbones in relation to the chasis the gap was about 180mm to where the two arms weld, in my case this was about 170mm ish, I tried several times to convince Mark of this, but he said that was the template used on all the cars. I personally do have reservatons over that.
Steve |
Some more pictures of my car's nearside front suspension:
http://www.johndry.com/gallery/main.php?g2_itemId=2431 I'll get in touch with Marlin later this week. |
http://img245.imageshack.us/img245/441/fuafmu3.gif
Before calling Mark, measure you're front upper wishbone. If the dimensions are as shown then carry on with you're build, as this works fine. Re-assess this when you have wheels on, ride height and camber/toe settings correct. John |
Cheers John.
The 149 mm on your drawing, is more like 144 mm on my left arm. The other dimensions appear to be the same, which makes sense given what Mark Matthews told me yesterday. Apparently the hard points are jigged, but the diagonal (for want of a better description) "...if cut a bit short, or a bit long, gets placed where it fits best..." Whilst there are more features that dictate the co-ordination of the components, I beleive there is at least one error on my car. Incidentally I've had the car on the ground, and have played with ride height and bounced the car. The geometry isn't perfect but it's not rediculous, and my springs audiably 'pop' past the arm! John. |
My experience seems to show that the "jig" or template that MArlin use must be made of elastic...
Not many of the parts on John's car are aligned properly. P1ss poor IMO. |
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Robin |
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