Area Representative marcos59 Posted June 16, 2015 Area Representative Share Posted June 16, 2015 I'm currently rebuilding an early S2 with BMC engine.I need to give spring rates to shocks suppliers (mainly road use) and have no idea of values.What are you advice ? I found values for Xflow / Rover engined car but not for lighter car as this S2 will be.Perhaps Fireblade cars could be good for comparaison too as they are L.A too ?Thanks for you help !RegardsNicolas Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 16, 2015 Member Share Posted June 16, 2015 I'd talk to Simon Rogers at Meteor Motorsport.JonathanPS: What sort of BMC engine, please? Link to comment Share on other sites More sharing options...
Area Representative marcos59 Posted June 16, 2015 Author Area Representative Share Posted June 16, 2015 Thanks for your answer Jonathan.I will go for cheap for protech shocks...difficult to ask advice to Meteor motorsport I'm affraid 1293cc Midget engine (Originaly 1098cc A serie but upgrade was too tempting) Link to comment Share on other sites More sharing options...
Mankee Posted June 16, 2015 Share Posted June 16, 2015 How much do you think it will weigh once complete? Link to comment Share on other sites More sharing options...
Area Representative marcos59 Posted June 16, 2015 Author Area Representative Share Posted June 16, 2015 Between, 430kg and 450kg depending screen or brooklands and with/without doors and tonneau. Are 180/Front and 130/Rear realistic ? Link to comment Share on other sites More sharing options...
simonpa Posted June 16, 2015 Share Posted June 16, 2015 James Whiting is an expert on early 7s - give him a call (make sure you have a cuppa and at least 30 mins) Link to comment Share on other sites More sharing options...
Area Representative marcos59 Posted June 16, 2015 Author Area Representative Share Posted June 16, 2015 Good idea as he is aslo BEC specialist Link to comment Share on other sites More sharing options...
Simon.Rogers Posted June 16, 2015 Share Posted June 16, 2015 Why is it difficult to ask me for advice? I own a 7, I drive a 7 and I sell parts. You may not want to buy dampres from me buy you will tell your friends what good advice you had off me and he may buy some dampers from me. Link to comment Share on other sites More sharing options...
elie boone Posted June 16, 2015 Share Posted June 16, 2015 A std K series had 150 LBs springs on the front and give that the A seies weigh about the same but has a lighter gearbox i would say spring rate between 125 LBs and 150 LBs.At the back it depends a bit on the reinforcement plate on the axle but the wheels/brakes will be lighter than a Ital axle my guess is between 90 LBs and 120 LBsJust my 2p Link to comment Share on other sites More sharing options...
Area Representative marcos59 Posted June 16, 2015 Author Area Representative Share Posted June 16, 2015 Well done Simon perfect answer Note it is not "I do not want to buy from you" just read "for a 90bhp road car I do not want put a lot of money for shocks" I think you sell upper range shocks and do not want to waste your time if I do not buy from you finally. But I will get in touch with you now as you friendly offer Link to comment Share on other sites More sharing options...
Area Representative marcos59 Posted June 16, 2015 Author Area Representative Share Posted June 16, 2015 Hi Elie Thanks for advice. If I take middle of your suggested values we have 130 front / 100 rearI forget to say: It will be rebuild with an Ital axle (Not Standard10) so do you think it will need stronger rear springs ? Link to comment Share on other sites More sharing options...
Area Representative marcos59 Posted June 17, 2015 Author Area Representative Share Posted June 17, 2015 Finally ordered 170 front / 110 rear as per much appreciated Simon Rogers / Meteor Motorsport advice Link to comment Share on other sites More sharing options...
elie boone Posted June 17, 2015 Share Posted June 17, 2015 Do you go 5link for the rear ? Link to comment Share on other sites More sharing options...
Area Representative marcos59 Posted June 17, 2015 Author Area Representative Share Posted June 17, 2015 In fact I will go for 4 long radius + A frameI will post pics Link to comment Share on other sites More sharing options...
Ivaan Posted June 17, 2015 Share Posted June 17, 2015 My R1 BEC Ital live axle weighs in at 380kgs.Spring ratesFront 150Rear 90.Using Protech one way adjustable shocks.Great on the road, maybe a bit soft on track. Link to comment Share on other sites More sharing options...
Area Representative marcos59 Posted June 17, 2015 Author Area Representative Share Posted June 17, 2015 Wahoo 380kg is VERY impressive...there is already twice less chassis tubes on my S2 to be around 430kg ! Link to comment Share on other sites More sharing options...
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