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Post by howardb66 on Jun 7, 2017 16:37:57 GMT
Tried in the paddock but it was very reluctant. Didn't want to damage anything so left it be. Now giving it regular soaks in oil & will have another go at freeing the little critter off. I tried it last time out at Gurston and found it helped a lot with the hairpin wheel lift then wheel spin scenario  No understeer as far as I could tell, managed to be flat thru hollow! I've concluded that once you get up to the spring rates a lot of the track orientated shocks are at the rear ARB isn't contributing much roll resistance but is reducing the amount of droop at the rear. I'm set up with 550lb front 335lb rear and a front RB ARB for reference Ah ha, flat thru hollow is quite a headrush!! Definitely going to try the arb thing at Silverstone in a few weeks. I've got 336F & 280R on Meisters which seem ok. as I'm on list 1A tyres. If I go to 1Bs I have to go 2.5% quicker but as all the sticky 1Bs are now 1C I don't see the advantage. |
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Post by sandys on Jun 7, 2017 21:47:50 GMT
Definitely going to try the arb thing at Silverstone in a few weeks. I've got 336F & 280R on Meisters which seem ok. as I'm on list 1A tyres. If I go to 1Bs I have to go 2.5% quicker but as all the sticky 1Bs are now 1C I don't see the advantage. Found that myself, my 1Bs (AD08R ) don't offer a tangible increase worth having over the 1A (Contisports) I ran before, if I was doing 20 lap stints they would be awesome where the CSC would melt but in all other aspects its more of a side grade with a longer warm up, perhaps have a touch more lateral grip but not so much longitudinal grip for a short sprint, certainly not worth a points penalty. It was a compromise choice as I do a lot of road mileage, probably should of just got something like Sport Cup 2s |
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jimb
New Here
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Post by jimb on Jun 8, 2017 11:53:51 GMT
Out of interest, where does the 2.5% come from? Is this a result of the target times for a championship?
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Post by sandys on Jun 8, 2017 12:27:19 GMT
Points scoring in classic marques has a weighted algorithm, scores based on power to weight with penalties for tyre type and if you have an advanced ECU etc. 2.5% is what they reckon you'll get for 1Bs but a lot of the good 1Bs moved to 1C.
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jimb
New Here
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Post by jimb on Jun 8, 2017 13:17:06 GMT
Yes, I know about the 1C's, my Dad used the supersoft Kumho's on his Mini Cooper S, and they were superb!
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Post by howardb66 on Jun 8, 2017 22:12:52 GMT
Points scoring in classic marques has a weighted algorithm, scores based on power to weight with penalties for tyre type and if you have an advanced ECU etc. 2.5% is what they reckon you'll get for 1Bs but a lot of the good 1Bs moved to 1C. Classic Marques is purely based on a power to weight formula. Which is why I like it as you compete against all sorts of interesting stuff- some are bog standard, some aren't. Different ECUs themselves don't make any difference to the factor. Tyres are the only thing that my alter your %age performance factor. Road going cars post 1992 have to run list 1A or B tyres- list 1B add 2.5% to your figure. To be honest the MX5 is such a great handling package, they are able to beat a lot of more exotic cars outright anyway. The other week the (outright) scalps included- E-type Jag MR2 TR7 V8 on slicks S2000 Ginetta G20 etc |
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Post by howardb66 on Jun 8, 2017 22:14:24 GMT
Yes, I know about the 1C's, my Dad used the supersoft Kumho's on his Mini Cooper S, and they were superb! Yeah, they're epic. I used them on my Griffith. In fact I've got 4 sets in my garage that I don't know what to do with!! |
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Post by sandys on Jun 9, 2017 0:00:27 GMT
Different ECUs themselves don't make any difference to the factor. I read the technical regs as I thought about joining you and saw this as a penalty for me as I have traction and stability control, do you read it another way? being a quick fat git in a lardy car with little power I could do quite well  Ultimately there wasn't enough overlap this year for me to do it. Which is a bit crap as I turn it off due to the amount of power it robs, Add that to the 1B bump and I could face an upto 5.5% penalty, not good. |
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Post by howardb66 on Jun 9, 2017 10:09:34 GMT
Different ECUs themselves don't make any difference to the factor. I read the technical regs as I thought about joining you and saw this as a penalty for me as I have traction and stability control, do you read it another way? being a quick fat git in a lardy car with little power I could do quite well Ultimately there wasn't enough overlap this year for me to do it. Which is a bit crap as I turn it off due to the amount of power it robs, Add that to the 1B bump and I could face an upto 5.5% penalty, not good. Just tell them that you don't run with it. That's what the bloke in the competition with the Boxster S does (it has PASM). However, the jury's still out on the cheating PDK gearbox as sequential gearboxes aren't allowed. Come & join us big man, use your figure to an advantage...... |
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Post by sandys on Jun 9, 2017 10:39:36 GMT
I'll look at the calendar next year and see how it syncs up, with my next season mods plan it is likely I will loose all the electronics anyway, probably my last stage of mods with this car before it goes on a diet and sheds 500kgs, in other words broken up to become a kit car donor vehicle (GBZero/MNR Vortx etc), for my next performance project. |
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No understeer as far as I could tell, managed to be flat thru hollow! 
Ultimately there wasn't enough overlap this year for me to do it. 
le sigh