Mark Durrant Posted January 15, 2014 Share Posted January 15, 2014 I have used a set of two way adjustable Ohlins dampers on my R500 K for the past 4 years which I removed before selling the car. On removal there were no signs of any leaks and all adjustments appeared to be in good working order. However, I decided that before fitting them to the Busa I would ask Simon at Meteor Motorsport to test them on his suspension dyno as I was interested to see if the dampers were equally matched as there are 24 adjustments for both bump and rebound. Simon tested the dampers and identified that the O/S/R was not working properly and the rebound adjustment was not working despite the adjuster moving freely. Simon arranged for the dampers to be rebuilt and serviced by Aurok, UK agent for Ohlins. I collected the dampers today which have been fitted with shorter hoses for the front remote reservoirs (necessary for the Busa) and the rears were rebuilt with one requiring the gas to be topped up. So how well matched are your dampers, Simon has found other makes to be 4 clicks different and I would suggest a check on a dyno is value for money. I will obviously now need another excuse for any poor results this season. Edited by - mark durrant on 15 Jan 2014 18:56:18 Link to comment Share on other sites More sharing options...
BBL Posted January 15, 2014 Share Posted January 15, 2014 Good point - probably time to check mine. Lots of good excuses at just go faster forum, but even if you don't prefer any of those, you can always blame the Americans. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted January 15, 2014 Share Posted January 15, 2014 I had AVO check mine, the before and after results on the dyno sheet when they were return made interesting reading. Also worth checking the springs rates too - these quire often get overlooked. Link to comment Share on other sites More sharing options...
Mavic82 Posted January 15, 2014 Share Posted January 15, 2014 2 years ago I decided it was time to update my 15 year old steel body AVO dampers with nice new alloy AVO units. I took both into work and tested them, not only were the steel bodied units identical Lh to Rh, they were also identical to the new units. The only variance was a slight differential in damping for each adjustment old to new. So from a performance perspective there was little point changing, but they looked nice :-) Link to comment Share on other sites More sharing options...
Mark Durrant Posted January 16, 2014 Author Share Posted January 16, 2014 BBL Thanks for the excuses 😬 Link to comment Share on other sites More sharing options...
charlie_pank Posted January 16, 2014 Share Posted January 16, 2014 If you can't tell by driving, does it matter? :) Link to comment Share on other sites More sharing options...
Mark Durrant Posted January 16, 2014 Author Share Posted January 16, 2014 If you can't tell by driving, does it matter? :) When competing in sprints and hillclimbs places are often separated by fractions of a second so yes I want the handling to be at its optimum. Link to comment Share on other sites More sharing options...
charlie_pank Posted January 16, 2014 Share Posted January 16, 2014 you'd better wear your lightest pair of underpants then... If your dampers aren't working optimally, then you'll have less grip at your disposal. You're making the assumption that you're always driving only just under the maximum grip available to you at any time. You'd be doing very well if that were the case :) Link to comment Share on other sites More sharing options...
Mark Durrant Posted January 16, 2014 Author Share Posted January 16, 2014 Charlie I am not going to disclose the style my underwear on this forum 😳 however, I believe in attention to detail. Why go to the trouble of setting up a car correctly and then not check it is working properly. I apply the same to engines where I will look to ensure the cams are timed correctly etc and that the engine mapped to ensure it is operating at its optimum. I use my car for competition and enjoy the preparation as much as the driving. Link to comment Share on other sites More sharing options...
Z3MCJez Posted January 16, 2014 Share Posted January 16, 2014 Whatever speed you drive at when you compete, it's 100% to you. So if your car isn't right then you will be slower. It's like saying, it's understeering, but I don't believe in changing the roll bar settings so I'll live with it Jez, wondering whether his 3yo suspension should be tested ... Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted January 16, 2014 Share Posted January 16, 2014 You would be amazed at what I have seen from a set of 2000 mile Billies 😳 Link to comment Share on other sites More sharing options...
Mavic82 Posted January 16, 2014 Share Posted January 16, 2014 I agree Jez, you may not be at the limit of the car but you are likely to be close to your own limit which would not be sided by poorly performing components. When I was racing you could instantly tell the difference 1 click made on the adjusters, you become attuned to the car. Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted January 16, 2014 Share Posted January 16, 2014 Yes but what if the damper was different from the beginning - would you have felt that????????????? Link to comment Share on other sites More sharing options...
Gary Stone Posted January 16, 2014 Share Posted January 16, 2014 After having a chat with the very knowledgable Simon Rogers the other day my Nitrons will be winging their way to him tomorrow. Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted January 17, 2014 Share Posted January 17, 2014 Hi Gary Edited by - Simon.Rogers on 17 Jan 2014 00:11:03 Edited by - Simon.Rogers on 17 Jan 2014 00:11:37 Link to comment Share on other sites More sharing options...
Z3MCJez Posted January 17, 2014 Share Posted January 17, 2014 Simon If someone put a set of, say, race Billies as used on the Supersport, in the post to you what would it cost to get them tested? Jez Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted January 17, 2014 Share Posted January 17, 2014 £100.00+vat Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted January 17, 2014 Share Posted January 17, 2014 Sorry - I should add that you will get a full plot of the test. Link to comment Share on other sites More sharing options...
Z3MCJez Posted January 17, 2014 Share Posted January 17, 2014 And this may be a really dumb question but I presume you test the complete unit - I.e. Spring and damper? Link to comment Share on other sites More sharing options...
david nelson Posted January 17, 2014 Share Posted January 17, 2014 I have now seen Simon using his dyno, well in pressed. The spring is removed and the damper is attached to the dyno. it does its stuff and you see the graph. What is interesting is the effects on 2 ways the compression or damping does. On normal dampers it just good to know they are the same. Simon you need to do a ytube thing... Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted January 17, 2014 Share Posted January 17, 2014 Thats the plan David. I need to line up a very pretty looking presenter who can point in an informative way at the dyno whilst in action. I have jusf had the first set of Penske's 2 way delivered today so thats tomorrows job! Link to comment Share on other sites More sharing options...
Mark Durrant Posted January 17, 2014 Author Share Posted January 17, 2014 I need to line up a very pretty looking presenter Why does someone called Debbie spring to mind Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted January 18, 2014 Share Posted January 18, 2014 There is a song that "springs" (see what I did there) to mind…….. There may be trouble ahead.... Link to comment Share on other sites More sharing options...
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