Pdv Posted October 20, 2022 Report Share Posted October 20, 2022 Does using a lowering block stop the rear end tuck. I have just refurbished the spring and wondered if it was worth fitting one at this point. The car is a 13/60 and I am pretty sure it is original so although refurbished is obviously a little weaker now. Any thoughts welcomed. Thanks Steve Link to comment Share on other sites More sharing options...
johny Posted October 20, 2022 Report Share Posted October 20, 2022 No, rear tuck under is still possible but less likely if the back end is lower. A weaker spring also helps as it also makes wheel camber more negative... Link to comment Share on other sites More sharing options...
JohnD Posted October 20, 2022 Report Share Posted October 20, 2022 "Rear end tuck" is aka "jacking". It is a known problem with a swing axle suspension. It occurs if you do all the wrong things,like brake as you go into a corner too fast. So, when Triumph announced their new, "All Independent Suspension" Herald, and the motoring Hacks, sorry, respected and knowledgeable motoring journalists, discovered that this meant swing axle, they set out to cause it, as soon as they were let loose in an example. And wrote about it. Ignoring the fact that many other cars, with names that they should have known well, like Mercedes (350SL) VW Beetle, Chevrolet Corvair, all had swing axle suspension. And the fact that when not driven in a lunatic fashion it works well. Triumph produced the swing AXLE in response to this unwarranted criticism, which was a brilliant modification, easy to produce, and implement on your earlier Triumph. A raised spring lowers the suspension, putting it into more negative camber at rest, so that it has further to go before it gets into grossly positive, which is 'jack up/tuck'. It works, but at the cost of a lower ride height. John Link to comment Share on other sites More sharing options...
Pdv Posted October 21, 2022 Author Report Share Posted October 21, 2022 Thanks for the replies, I don't want to reduce it by much was thinking of one of the 1/2 inch blocks from Canleys. That and the weaker spring may help. Thanks Steve Link to comment Share on other sites More sharing options...
NonMember Posted October 21, 2022 Report Share Posted October 21, 2022 9 hours ago, JohnD said: Triumph produced the swing AXLE in response to this Ooops, typo, methinks. The swing SPRING was the response (well, after the much more expensive Rotoflex setup) Link to comment Share on other sites More sharing options...
PeteH Posted October 21, 2022 Report Share Posted October 21, 2022 There was some "discussion" in an earlier post?. Ref; the installation of the Swing Spring. Which if i recall correctly, advised an upgrade to the Front Anti roll bar too. Pete Link to comment Share on other sites More sharing options...
NonMember Posted October 21, 2022 Report Share Posted October 21, 2022 The swing spring has significantly less roll resistance than the fixed one, so the factory also beefed up the front anti-roll bar to compensate for that. It's not strictly necessary - the car will handle fine with the thinner one, you just get more body roll. Link to comment Share on other sites More sharing options...
JohnD Posted October 21, 2022 Report Share Posted October 21, 2022 Thank you, Non-Member! Brain farts allowed (expected?) at my age, but to EMPAHASISE THEM IN CAPS?? John Link to comment Share on other sites More sharing options...
Wagger Posted October 21, 2022 Report Share Posted October 21, 2022 This has been discussed many times before. I just carry the spares around with me. It adds the necessary weight over the axles and gets me out of trouble should I break down. Also useful for exchanging surplus bits at meet ups. Unless you are going to race your car. Leave well alone. Most of us never experience 'Tuck under', even with spirited driving. Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 21, 2022 Report Share Posted October 21, 2022 a lowering block is the cheapest and simplest way to improve the rear camber , i had awful experience when we added a swinger to the viteese6 just went lower and lower sat on the shocker bump stops and rolled like apig witht eh thicker ARB the swinger came off and a courier fitted witha 1" lowering block now that was on rails in comparison many do get on witha swinger but if you run 4 up and boot full its just hopeless (this was a Vitesse Kit from well known ) so my view remains just add a block you do need to remove the studs to drop it in but it will make a good contribution to the look of the silly camber and its cheap Pete Link to comment Share on other sites More sharing options...
DVD3500 Posted October 21, 2022 Report Share Posted October 21, 2022 Always wondered why the "lowering" block was bigger .... probably because I didn't really think about it...:-D Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 21, 2022 Report Share Posted October 21, 2022 what you mean by "bigger" its an alloy block machined to replicate the top of the diff case spring location paint it black an its almost a secret Pete Link to comment Share on other sites More sharing options...
68vitesse Posted October 21, 2022 Report Share Posted October 21, 2022 Fitted half inch lowering block to my Mk1 Vitesse after fitting lower springs to the front as I didn't like the appearance with standard springs. Thought the front was to high, the gap between top off tyre and bottom of wheel arch just looked to big. Regards Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 21, 2022 Report Share Posted October 21, 2022 as aside there are fitted length dimensions in the WSM spring data and just to add so many replacement shockers had the spring pads in the wrong place giving rise to ride height problems Pete Link to comment Share on other sites More sharing options...
johny Posted October 21, 2022 Report Share Posted October 21, 2022 8 hours ago, Wagger said: This has been discussed many times before. I just carry the spares around with me. It adds the necessary weight over the axles and gets me out of trouble should I break down. Also useful for exchanging surplus bits at meet ups. Unless you are going to race your car. Leave well alone. Most of us never experience 'Tuck under', even with spirited driving. Certainly good driving technique is the best way to avoid the problem👍 Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 22, 2022 Report Share Posted October 22, 2022 bit like engine start up knock if drivers managed to induce any tuck under in any normal driving we wouldnt have any triumphs left to play with you do have to be a complete nut to power into a roundabout and lift of through the turn inducing some serious roll loads that very few drivers would ever get themselves into unless they were confronted with that hopeless situation adding a block to improve the stance and road holding of the silly POSITIVE camber is a well worth while improvement we dont know why Triumph started witha high negative other than it does keep aligned with full loaded droop of the arc the axle travels under various loads from my playing a 1/2" gives you 2deg pos a 1" gives you 0 deg that was on a courier spring camber corrected Uncle P Pete Link to comment Share on other sites More sharing options...
johny Posted October 22, 2022 Report Share Posted October 22, 2022 14 minutes ago, Pete Lewis said: you do have to be a complete nut to power into a roundabout and lift of through the turn inducing some serious roll loads that Guilty as charged but I was a novice driver... Link to comment Share on other sites More sharing options...
Steve P Posted October 22, 2022 Report Share Posted October 22, 2022 I hate to correct uncle Pete, but he keeps saying silly Negative camber when i think he means positive camber,(runs away and hides). S 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 22, 2022 Report Share Posted October 22, 2022 its an age thing !!!! i could edit but coffee time calls ha ! Pete slurp !!! edited Thanks for the heads up Steve it just shows memebers do read this stuff ha !! Link to comment Share on other sites More sharing options...
daverclasper Posted October 23, 2022 Report Share Posted October 23, 2022 On 22/10/2022 at 11:08, Steve P said: I hate to correct uncle Pete, but he keeps saying silly Negative camber when i think he means positive camber,(runs away and hides). Do it myself. I think with me, it's because the factory camber can have "negative" results. 1 Link to comment Share on other sites More sharing options...
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