barrytr4 Posted December 15, 2020 Report Share Posted December 15, 2020 Hi Mates Other problems from my first test run, I think the front suspension is too hard, I'm about 75 Kgs and can only press the wind/mudguard each side down about 5 mm 1/4" ( even that might be tyre movement) first thought the bottom/outer whish-bone bushes were too tight ( the castlated nuts) they were, slackened them off a bit , at the time I thought it was better?, the car drove/ steered well, so how much should I be able to press down each side to get a rough guide and could some of the suspension parts be on the wrong side , thanks for the ongoing help--Barry Quote Link to post Share on other sites
Geko Posted December 15, 2020 Report Share Posted December 15, 2020 I don't think there's a "press down" threshold (that's funny). New suspension are often a bit weird until everything falls into place, drive it onto potholes and speed breakers and make sure everything is lubricated. Now What springs specs to you have? Quote Link to post Share on other sites
barrytr4 Posted December 15, 2020 Author Report Share Posted December 15, 2020 Hi Geko--Thanks for that, while I was out on my test run, I went to a local Triumph dealer/repairer , he drove it and he thought they were too soft at first?, any ideas how to test for hard/ soft?--Barry Quote Link to post Share on other sites
RogerH Posted December 15, 2020 Report Share Posted December 15, 2020 Hi Barry, hopefully it is the spring resistance you are trying to overcome when bouncing up and down on the wing. The original springs are about 390lbs/inch so you 75Kg may move it something less than 1/2" if the system was freely suspended. When the wing goes down the wheel/tyre wants to go outwards - it can't if stationary - so your 1/2" becomes a little less. Are you sure that top ball joint, TRunnion, wishbones are all free(ish) to move? If the front ed is too soft then cornering at and decent speed can be interesting. Take it for a good run ad see what it does. As Geko states - it will settle down. Roger Quote Link to post Share on other sites
TR4Tony VC Posted December 15, 2020 Report Share Posted December 15, 2020 Hi all To my mind and experience it sounds like you have fitted stiff fast road / race type spring ratings, but also this might be a matter of the springs being compressed a little too much by spacers or polybushes etc so that they are not actually compressing that much in use - So very hard - have you got short springs and alloy spacers fitted ? in the case of bushes they will settle a bit for sure but the spring and solid spacer situation won’t change much. You may need to change them. It may also be that the shock absorber settings might be too hard on rebound (particularly). I deliberately run my own TR4 relatively stiffly sprung at the front (410 lbs) and baggy at the back (165 to 170lbs) and it handles beautifully. Softly sprung but stiffly damped at both ends with 9/16th ARB at the front only. Fatter bars just gave me more understeer as I turned in. There are a couple of other things to consider in terms of what I would call hard ride and feedback, being solid rack mounts and a stiff / thick anti roll bar. Both give more ‘bang / crash’ at the front and the perception of a hard ride. It’s worth disconnecting the ARB and seeing how things change, especially as you turn the car in on a sharp corner. regards Tony Quote Link to post Share on other sites
trchris Posted December 15, 2020 Report Share Posted December 15, 2020 Hi Barry I removed the front ARB and it softened the suspension no end at the front not needed in my view and you'll be surprised how much it stiffens the front when fitted Chris Quote Link to post Share on other sites
Malbaby Posted December 15, 2020 Report Share Posted December 15, 2020 Barry, Some contradiction there. Triumph repairer says too soft, you say hardly any give in the suspension. Do you know the history of the front suspension, any new work or replacement parts? Quote Link to post Share on other sites
barrytr4 Posted December 17, 2020 Author Report Share Posted December 17, 2020 Hi Mates found the problem the damper's were sticking after standing too long, thanks for your help--all the best for the holiday season Barry Quote Link to post Share on other sites
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