nigethomas Posted June 5, 2018 Report Share Posted June 5, 2018 Hi everyone Was wondering if anyone out there with 4a solid axle could advise me on something.i dont seem to have any bump stops on my 4a chassis the ones i presume screw in directly underneath shocker lever arm.i have the ones on the body fitted at the back but not on chassis.where is exact position these need to be fitted?there are no captives on the chassis as looks like its been plated over at some stage.i think due to these being missing its caused splits in the areas around where shocks mount. Kind regards Nige Quote Link to post Share on other sites
Lebro Posted June 5, 2018 Report Share Posted June 5, 2018 This may not be true for 4's but on a '3 the bump stop rubbers are on the axle. Bob. Quote Link to post Share on other sites
nigethomas Posted June 5, 2018 Author Report Share Posted June 5, 2018 Hi ya bob hope your well.looking at moss book it looks like there is bump stop under lever arm damper which it says is for chassis.mine has never had these so just not sure of correct position of them. Nige Quote Link to post Share on other sites
stuart Posted June 5, 2018 Report Share Posted June 5, 2018 Here you go, picture from mine. Stuart. Quote Link to post Share on other sites
nigethomas Posted June 5, 2018 Author Report Share Posted June 5, 2018 Nice one stuart ???? Nige Quote Link to post Share on other sites
Motorsport Mickey Posted June 5, 2018 Report Share Posted June 5, 2018 Stuart, does the additional Spring leaf clamps stiffen up the rate at all ? Mick Richards Quote Link to post Share on other sites
stuart Posted June 5, 2018 Report Share Posted June 5, 2018 (edited) Stuart, does the additional Spring leaf clamps stiffen up the rate at all ? Mick Richards Oh yes, well spotted! I started with four of them per side as there is only one flavour of spring for those cars but eventually settled on the current two per spring which works really well.Picture below of intermediate setup with 3 clamps 9" and wires, now gone to 2 per side with 10" Alfins and Minilites. Stuart. Edited June 5, 2018 by stuart Quote Link to post Share on other sites
BrianC Posted June 5, 2018 Report Share Posted June 5, 2018 OK, I will show my ignorance as I've never heard of them before: How do the leaf clamps stiffen the rate? [Preferably in layman's terms!] Quote Link to post Share on other sites
Hamish Posted June 5, 2018 Report Share Posted June 5, 2018 I think they provide greater resistance to sliding on one another. Quote Link to post Share on other sites
Motorsport Mickey Posted June 5, 2018 Report Share Posted June 5, 2018 I think they provide greater resistance to sliding on one another. +1 but they also reduce the length of the individual "beams" in the spring configuration hence increasing the mechanical advantage to bending. ie the unfettered Spring length is between the axle beam and the Spring attachment to the chassis at either end, clamping the leaves together in one or two places as Stuart has halves or Quarters the "lever length" of the Spring leaves and reduces it's bending power, it can't bend as much. Mick Richards Quote Link to post Share on other sites
Hamish Posted June 6, 2018 Report Share Posted June 6, 2018 So an easy and reversible modification for those odd days of competition to stiffen up the rear. Hhhmmmmm interesting ......... Quote Link to post Share on other sites
BrianC Posted June 6, 2018 Report Share Posted June 6, 2018 Thanks Hamish and Mick - even I can understand that. Quote Link to post Share on other sites
stuart Posted June 6, 2018 Report Share Posted June 6, 2018 So an easy and reversible modification for those odd days of competition to stiffen up the rear. Hhhmmmmm interesting ......... Just make sure you place them correctly as it is possible for them to foul the inner tyre edge and use high tensile bolts, It takes a bit of trial and error to get it how you want but thats the same with any "Tuning" Stuart. Quote Link to post Share on other sites
nigethomas Posted June 6, 2018 Author Report Share Posted June 6, 2018 Hi stuart Ive had car jacked up today and there doesnt appear to be any mounting points on chassis for the bump stops to attach to.ive tried to upload pictures but keeps saying size to big so gave up with it.is there anyway you could find me dimensions of these brackets as looks like im going to have to make these up.its no wonder its been banging about over bumps. Cheers Nige Quote Link to post Share on other sites
nigethomas Posted June 6, 2018 Author Report Share Posted June 6, 2018 Have just looked in moss book and the brackets are listed but no longer available.part numbers 140194 Lh and 140195 Rh Nige Quote Link to post Share on other sites
stuart Posted June 6, 2018 Report Share Posted June 6, 2018 Talk to Colin at CTM as they make new chassis so will be able to supply them http://www.ctmengineering.co.uk/ Stuart. Quote Link to post Share on other sites
nigethomas Posted June 6, 2018 Author Report Share Posted June 6, 2018 Ok thanks stuart. Nige Quote Link to post Share on other sites
Lebro Posted June 6, 2018 Report Share Posted June 6, 2018 Or the TR shop may have some 2nd hand ones Bob. Quote Link to post Share on other sites
stuart Posted June 6, 2018 Report Share Posted June 6, 2018 Or the TR shop may have some 2nd hand ones Bob. Unlikely as they are part of the chassis and welded on. Lukas usually like to sell you a complete chassis. Stuart. Quote Link to post Share on other sites
nigethomas Posted June 6, 2018 Author Report Share Posted June 6, 2018 Sorted stuart all ordered thanks again ???? Nige Quote Link to post Share on other sites
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