James.Burton Posted June 9, 2019 Share Posted June 9, 2019 I keep scraping my sump, and the exhaust.ride height is I think kind of standard with about 6cm under the sump (VXi).I have the street Nitrons on. Can I just wind up the stops under the springs to give me another 1 cm, or am I being dumb? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 9, 2019 Member Share Posted June 9, 2019 ride height is I think kind of standard with about 6cm under the sumpA widely recommended minimum is the ability to roll a Coke can under the lowest point. That's 66 mm. But there are many experiences in the archives describing 75 mm as being needed to clear obstacles.Jonathan Link to comment Share on other sites More sharing options...
Tazio Posted June 9, 2019 Share Posted June 9, 2019 Without intending to be rude, yes you are being a bit dumb, just raising the front adversely affects the rake of the car, the front to rear balance and has a detrimental affect on the cars handling. To do the job properly take the car to someone who knows how to set a 7 up properly, there are a number of places you can go depending where you are. Don't make arbitrary changes, you can make your car truly terrible to drive. Link to comment Share on other sites More sharing options...
elie boone Posted June 9, 2019 Share Posted June 9, 2019 If you wind up all 4 platforms equally it should be ok. For the best road holding and brake performance you will need to have it flat floored set up but then it only will be at it's best the way it's set up, i.e. for you as a driver only or for you and with a passenger of a certain weight. Link to comment Share on other sites More sharing options...
Area Representative Golf Juliet Tango Posted June 9, 2019 Area Representative Share Posted June 9, 2019 JanesObviously in the Austrian Tyrol, Caterham specialists will hard to find but you may know people in LSOS who can help.As above, you do need to keep the rake from front to back consistent and the coke tin test is commonly used for sump clearance. Link to comment Share on other sites More sharing options...
Tazio Posted June 9, 2019 Share Posted June 9, 2019 James , if you contact Simon Rogers at Meteor Motorsport, he can provide you with some set up notes of how to set front and rear ride heights, it works for him. Link to comment Share on other sites More sharing options...
James.Burton Posted June 9, 2019 Author Share Posted June 9, 2019 Thanks all.Coke can showed me to be 1cm too low, so I adjusted all corners up (taking notes so I can return it if required). I`ll look to find the suggested settings as there isn't any specialist nearby. I looked in the technical blog and didn't see details of set up suggestions (not just ride height but toe in/out, etcetera). I would have thought that to be one of the most obvious topics to have there.Looking forward to the test drive tomorrow morning, over the FachinaJoch pass Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 9, 2019 Member Share Posted June 9, 2019 I looked in the technical blog and didn't see details of set up suggestions (not just ride height but toe in/out, etcetera). I would have thought that to be one of the most obvious topics to have there.Start here, but NB different settings have been recommended at different times as discussed there.JonathanPS: Have you already got the appropriate Assembly Guide? Please let me know if you haven't and would like a copy. Link to comment Share on other sites More sharing options...
James.Burton Posted June 10, 2019 Author Share Posted June 10, 2019 Jonathan,Thanks that's great.If you could send the assy guide for a European VXi (1996) that would be much appreciated.James Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 10, 2019 Member Share Posted June 10, 2019 Please send me a Private Message with your email address and the details: model, year, engine etc.Jonathan Link to comment Share on other sites More sharing options...
Area Representative Geoff Brown Posted June 10, 2019 Area Representative Share Posted June 10, 2019 But do not forget to put the equivalent of your weight in the drivers seat before adjusting the basic ride height fore & aft........Remember for every adjustment made the rake will change so go round every corner to ensure the basic chassis to floor measurement has not changed. Link to comment Share on other sites More sharing options...
Leadership Team Midas Posted June 10, 2019 Leadership Team Share Posted June 10, 2019 James, you might want to check whether you have the right front springs on the Nitrons. Mine came with 18cm front spring lengths which left the car riding dangerously low on the road. I enquired with Nitron and they sent me longer correct front springs. Just a thought. Link to comment Share on other sites More sharing options...
elie boone Posted June 10, 2019 Share Posted June 10, 2019 Ride height and rake is set without driver or co-driver, corner weights are mostly done with driver with or without co-driver Link to comment Share on other sites More sharing options...
nutty7 Posted June 10, 2019 Share Posted June 10, 2019 Yes as Midas said spring lengths should be checked, just winding up the collars could cause to much pre-load. Link to comment Share on other sites More sharing options...
Area Representative Geoff Brown Posted June 11, 2019 Area Representative Share Posted June 11, 2019 elie - So you set the basic ride height & rake with an empty cockpit then get in (80Kg+). Instantly the set ride height is no more? Link to comment Share on other sites More sharing options...
elie boone Posted June 11, 2019 Share Posted June 11, 2019 Caterham doesn't state that the ride height and rake should be set with anyone in the 7. If you do 2 turns up ( linear springs ) on the drivers side ( courtesy of freestyle ) compared to the other side you are really close in diagonals with a driver in the 7 if you put it on scales. I always sit in the 7 when i check the display as you can't replicate the human body with a bag of sand. Link to comment Share on other sites More sharing options...
Area Representative Geoff Brown Posted June 12, 2019 Area Representative Share Posted June 12, 2019 After my build I used 80Kgs on the drivers side & 20Kgs on the pax side then set the basic ride height, toe & camber. Adjusting the ride as necessary again.When I had the car professionally set up they were surprised how close it was & only required 'tweaking' to get the diagonal & rake spot on fighting against variable rate springs on the rear! That took nearly four hours.My current setting for the rear shocks is 14 threads showing RHS & three showing LHS. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted June 13, 2019 Share Posted June 13, 2019 ALL suspension checks and adjustments should be done with the correct level of ballast applied - otherwise its pointless Link to comment Share on other sites More sharing options...
Simon.Rogers Posted June 14, 2019 Share Posted June 14, 2019 James. You are really going to struggle to get to your required ride heights using the Street Series. The springs are too soft for the VX. Can you tell me when you purchased them as we had to get them extended before we could sell them.Unfortunately the SS only comes with set spring rates/valving and lengths.Again its its likely you will run out of thread on the damper body at the front with the standard 7" spring.You will have loads of preload on each end particularly the front and the ride will be very bouncy! Please give me a call if you need more information or advice. Link to comment Share on other sites More sharing options...
JP Posted April 30 Share Posted April 30 Just picking up this thread from the one on coil over adjustment. I need to get my suspension ride heights into the correct ballpark before a longer drive to get it properly flat floored / cornered. My question is where does one measure the ride height at the rear? I am sure I have seen a diagram of this somewhere but cannot find it ion my assembly guide or owners manual. So, do I set the front with, say, 75mm sump clearance, then measure the front ride height under the chassis say at the rear leg of the front suspension wishbone, then add 15mm rake but then measure the rear height where? At the front A-frame mount? Where is the reference point for measuring rear ride height? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted April 30 Member Share Posted April 30 Measuring rake: and https://duckduckgo.com/?q=site:caterhamlotus7.club+measure+rake Jonathan Link to comment Share on other sites More sharing options...
JP Posted April 30 Share Posted April 30 Thank you! I had tried the search...honest... Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted April 30 Member Share Posted April 30 Always happy to discuss searching... : - ) Jonathan Link to comment Share on other sites More sharing options...
SM25T Posted April 30 Share Posted April 30 15 minutes ago, JP said: Just picking up this thread from the one on coil over adjustment. I need to get my suspension ride heights into the correct ballpark before a longer drive to get it properly flat floored / cornered. My question is where does one measure the ride height at the rear? I am sure I have seen a diagram of this somewhere but cannot find it ion my assembly guide or owners manual. So, do I set the front with, say, 75mm sump clearance, then measure the front ride height under the chassis say at the rear leg of the front suspension wishbone, then add 15mm rake but then measure the rear height where? At the front A-frame mount? Where is the reference point for measuring rear ride height? Do it all with the equivalent of your weight in the car. Link to comment Share on other sites More sharing options...
JP Posted April 30 Share Posted April 30 Will do! Right now I just want to make sure I can get to PT safely and without grounding my sump! My car is currently as I have rebuilt it - with components fitted out of the box and applying the general guidance from the build manual. Looking forward to getting it properly set up... Link to comment Share on other sites More sharing options...
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