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Post by Rickster on Aug 31, 2017 11:57:54 GMT
Anyone running 195 45 15 - should give slightly lower gearing can you tell the difference (puts the speedo out by 1mph at 30mph)? Diff is a long term solution that is not easily reversible so a smaller rolling circumference could be a good temp solution and it appears to be only slightly less than what you get from 4.3 diff?  |
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Post by wannabe on Aug 31, 2017 16:03:15 GMT
Should indeed increase acceleration - don't forget smaller sidewalls will make the ride even harder than it already is lol, and lower it slightly!
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Post by Rickster on Aug 31, 2017 17:06:50 GMT
Should indeed increase acceleration - don't forget smaller sidewalls will make the ride even harder than it already is lol, and lower it slightly! Yes the ride is not important - wont be using them on the road - might give it a try next season, its basically for a particular corner!! |
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Post by minty on Aug 31, 2017 19:32:43 GMT
Should indeed increase acceleration - don't forget smaller sidewalls will make the ride even harder than it already is lol, and lower it slightly! Yes the ride is not important - wont be using them on the road - might give it a try next season, its basically for a particular corner!! That's commitment š |
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Post by sandys on Aug 31, 2017 20:09:43 GMT
For fun you can plot all the specs in here and do some sims www.optimumg.com/software/optimumlap/its not perfect as it doesn't do gradients but and interesting thing to play with, seemed to come out well for me. |
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Post by Rickster on Sept 2, 2017 8:11:12 GMT
For fun you can plot all the specs in here and do some sims www.optimumg.com/software/optimumlap/its not perfect as it doesn't do gradients but and interesting thing to play with, seemed to come out well for me. Cheers Sandy, I built a sim of the Gurston hill - seems pretty accurate, with my car I'm getting about 39.5 secs with no elevation which sounds about right. ill try it with the smaller tyre as well it's a fun bit of free software! |
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Post by sandys on Sept 2, 2017 16:08:08 GMT
It does have hooks for gradient etc in the software but that is probably only enabled for the non free version, the software came out quite well for my 5 at Combe too.
Just a note when you change tyre sizes make sure it takes, it doesn't always.
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Post by Rickster on Sept 4, 2017 13:38:48 GMT
It does have hooks for gradient etc in the software but that is probably only enabled for the non free version, the software came out quite well for my 5 at Combe too. Just a note when you change tyre sizes make sure it takes, it doesn't always. Hi Sandy go to File>options>advanced and you can turn on track elevation! standard tyre size gives me 41.42 smaller tyre 41.34 Dont think i'd notice the difference!! |
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Post by sandys on Sept 4, 2017 13:53:52 GMT
Yes but it doesn't do anything, there are no changes to times calculated if you pick a hilly circuit, which is why I would say it doesn't work.
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Post by Rickster on Sept 4, 2017 15:54:51 GMT
Yes but it doesn't do anything, there are no changes to times calculated if you pick a hilly circuit, which is why I would say it doesn't work. it worked for me added nearly 2 secs to the times |
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Post by sandys on Sept 4, 2017 19:02:22 GMT
Maybe there is an update, I have had it for a while. Going to go and have a play.
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le sigh