Qu1ckn1ck Posted September 22, 2016 Author Report Share Posted September 22, 2016 Suspension now rebuilt with a replacement wishbone, spring spacers fitted to front springs and trunnions cleared of grease and refilled with gear oil. A lazer alignment check and adjustments was then undertaken followed by a short test drive. Very relieved to find that the problem with the tyre fouling the bulkhead appears to have been resolved. 1 Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted April 25, 2019 Author Report Share Posted April 25, 2019 Having believed that we had resolved the front tyre to bulkhead interference on lock some 2.5 years ago by fitting spring spacers we now find that it is happening again. I can only assume that the springs have settled after the pounding they have taken from our pot-holes. Would replacement Gaz height and damping adjustable dampers be a possible (expensive) answer ? Once again, any ideas and suggestions gratefully received. Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 25, 2019 Report Share Posted April 25, 2019 Is this the inner wheel on full lock. Of only on max lock fit a lock stop on the rack end ball socket Pete Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted April 25, 2019 Author Report Share Posted April 25, 2019 Very difficult to tell when it is happening, Pete, but the scuffing on the bulkhead suggests it could even be happening in the steering straight ahead position too, possibly when pot-holing with two up. All the contact evidence is on the bulkhead with no damage obvious on the tyre suggesting only momentary contact. In unloaded static condition there appears to be ample clearance between tyre and bulkhead so difficult to visualise how it is happening. Link to comment Share on other sites More sharing options...
JohnD Posted April 25, 2019 Report Share Posted April 25, 2019 Surely you can hear it?? And know when. Pictures might help. J. Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted April 25, 2019 Author Report Share Posted April 25, 2019 27 minutes ago, JohnD said: Surely you can hear it?? And know when. Pictures might help. J. Don't hear anything other than the crunch as we hit another pot-hole, just see the evidence later on the bulkhead. This was the pic taken originally and we are now getting exactly Similar scuff marks again. Link to comment Share on other sites More sharing options...
JohnD Posted April 25, 2019 Report Share Posted April 25, 2019 I'd check your bushes. If it were merely that excess steering angle was turing the wheel into the bulkhead it would happen then, but a pothole pushes the wheel back. JOhn 1 Link to comment Share on other sites More sharing options...
Gully Posted April 25, 2019 Report Share Posted April 25, 2019 Can't get to the near side of mine under the car port, but measuring the offside I've just over 6cm clearance between tyre and bulkhead in the area of your marks - that's with 13x5J wheels and 175/70 R13 tyres. If my tyre travelled in a straight up deflection courtesy of a pot hole, it would clip the inner lip of the wheel arch before getting near the bulkhead. As JohnD has indicated - you must be getting a significant amount of rearward deflection in particular circumstances to cause the interference. Are you on Sunday's bunker run? If so, we can compare geometry - something seems awry still. Gully 1 Link to comment Share on other sites More sharing options...
thescrapman Posted April 26, 2019 Report Share Posted April 26, 2019 Remove the spring assy, you can then easily move the suspension through its entire range to see where it may get touch 1 Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted April 26, 2019 Author Report Share Posted April 26, 2019 16 hours ago, Gully said: Can't get to the near side of mine under the car port, but measuring the offside I've just over 6cm clearance between tyre and bulkhead in the area of your marks - that's with 13x5J wheels and 175/70 R13 tyres. If my tyre travelled in a straight up deflection courtesy of a pot hole, it would clip the inner lip of the wheel arch before getting near the bulkhead. As JohnD has indicated - you must be getting a significant amount of rearward deflection in particular circumstances to cause the interference. Are you on Sunday's bunker run? If so, we can compare geometry - something seems awry still. Gully Sorry Paul, we are not on the Bunker Run. Thanks for helpfully advising your clearance of 6cm, our worst affected side is only 4.6cm and the minimally affected side is 5.5cm so perhaps our body tub is slightly too far forward? Our tyres are also 175/70 R13 but on Triumph 5.5J wheels. When admiring your very nice new wheels on Monday we noticed that the offset was noticeably different to ours which could explain why ours don't hit the wheel-arch as yours might. Might be a clue that our wheels possibly have an incorrect offset? Still scratching our heads but I guess the next step is to follow thescrapman's very sensible suggestion. Nick Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 26, 2019 Report Share Posted April 26, 2019 Nick reckon your 175/70 is as the near to original as you can get used by many if you remove a front body bolt im sure the one in the front outrigger is a sized fit all others have clearance has the body bracket been opened up to get fit ??? you know you love nighmares !!!!! Pete 1 Link to comment Share on other sites More sharing options...
Adrian Posted April 26, 2019 Report Share Posted April 26, 2019 May be a daft question but are the wheel arches and bonnet aligned / constructed correctly? If it has the rubber strips on the wheel arches they can easily foul on the bulkhead. 1 Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted April 27, 2019 Author Report Share Posted April 27, 2019 Thanks for the suggestion but definitely the wheel that is making contact with the bulkhead. Link to comment Share on other sites More sharing options...
Mark B Posted April 27, 2019 Report Share Posted April 27, 2019 Hi I had this on my Vitesse on full lock, fitted with 175, 70, 13 tyres. My Vitesse sat very low initially after restoration, the look I like, just about clear speed humps, but on full lock with a passenger I could hear the tyre rubbing, with resulting witness marks. The bulk head slopes inward, the lower down the bulk head you go until you reach the outrigger. A little height adjustment makes a lot of difference to clearance. I made up some slider plates when setting up the suspension so it was easy to turn from lock to lock adjusting the height to give the clearance. Spring rate obviously has an effect on the amount it dives on hard braking so maybe worth upping the spring rate. Also worth checking front suspension bushes for movement, flex and that the lower wishbone mounts to chassis are torqued up correctly. Mark 1 Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted April 27, 2019 Author Report Share Posted April 27, 2019 Mark, You have described our problem exactly. We overcame it for 2.5 years by adding 3/8" spring spacers. My guess is that either our springs have settled, potholes have got bigger or I and my passenger have put on weight. Perhaps a combination of all three. Nick Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 27, 2019 Report Share Posted April 27, 2019 wsm gives 8.06" +- 0.09" as a fitted length free length 12.46" working coils 9.5 unladen castor 3.5 + - 1deg silly castor could move the wheel centre rearwards ??? Pete 1 Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted April 27, 2019 Author Report Share Posted April 27, 2019 My fitted spring length is a gnat's less than 8" plus a 3/8" spacer so approx 8.25" total and there appear to be 9 working coils. When I had 4-wheel total alignment done on 22.09.2016 the best they could achieve on castor was 2.33 deg left front and 3.23 deg right front. To increase the castor angle do I remove shims from the front wishbone mount and add them to the rear? Nick Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 27, 2019 Report Share Posted April 27, 2019 But they are pretty close to being in tolerance. Will have to look up effect of a shim shift Pete Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted May 12, 2019 Author Report Share Posted May 12, 2019 The front suspension has now been totally dismantled and rebuilt with Spax height adjustable shocks, all wishbone bushes replaced with poly bushes and hub bearings and seals replaced. With a slight increase in front end ride height and after an extensive test run we finally appear to have overcome the problem of tyre to bulkhead interference as no witness marks are showing on the white target patch. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted May 12, 2019 Report Share Posted May 12, 2019 I think that if you're replaced the bushes then John was initially correct way back near the top of the page - it's the bushes. It's the only thing I can think of that would allow the wheels to move backwards so much that they hit the bulkhead; either that, or your entire turret is moving about. BTY just a thought - is there a grommet over the loom where it goes through the bulkhead, above the fuel filter in that pic? It's a sharp edge to have a loom resting on without padding, but I can't see if that's rubber in the pic, or just the blackness through an ungrommetted hole. Link to comment Share on other sites More sharing options...
NonMember Posted May 12, 2019 Report Share Posted May 12, 2019 24 minutes ago, Colin Lindsay said: BTY just a thought - is there a grommet over the loom where it goes through the bulkhead, above the fuel filter in that pic? It's a sharp edge to have a loom resting on without padding, Ouch, yes, indeed! I'd also be tempted to suggest running the loom the other side of the fuel hose, with the tacho cable, or maybe shorten the hose and re-angle the inlet pipe on the pump so it's out of the way. Link to comment Share on other sites More sharing options...
Pete Lewis Posted May 12, 2019 Report Share Posted May 12, 2019 you have got the rear wishbone pivot on the right way up front its pivot high rear is pivot low??? Pete Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted May 12, 2019 Author Report Share Posted May 12, 2019 4 hours ago, Pete Lewis said: you have got the rear wishbone pivot on the right way up front its pivot high rear is pivot low??? Pete Like this Pete? Link to comment Share on other sites More sharing options...
Pete Lewis Posted May 12, 2019 Report Share Posted May 12, 2019 Yes , i was just thinking out the box that wishbone doesnt look central in the bracket or is that just the photo pete Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted May 13, 2019 Author Report Share Posted May 13, 2019 21 hours ago, Colin Lindsay said: I think that if you're replaced the bushes then John was initially correct way back near the top of the page - it's the bushes. It's the only thing I can think of that would allow the wheels to move backwards so much that they hit the bulkhead; either that, or your entire turret is moving about. Certainly the bushes may well have been an important factor but the fact that the offending nearside was sitting 1/2" lower than the offside probably did not help either. Thanks everyone for your help and advice Nick Link to comment Share on other sites More sharing options...
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