stuka
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Re:The MR2 Australia SW20
2014/01/10 14:43:25
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Well done with the lap time at Wakefield Glenn. How effective is the aero on the car?
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track_mr2
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Re:The MR2 Australia SW20
2014/01/10 18:49:53
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I saw your lap times on NATSOFT for Wakefield, what a weapon. Well done on the build, looks the part too.
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Admin
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Re:The MR2 Australia SW20
2014/01/10 19:37:27
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stuka
Well done with the lap time at Wakefield Glenn. How effective is the aero on the car?
Thanks Pat. To be honest, I haven't noticed a difference. The car does however seriously need a splitter on the front. At high speeds - i.e. Eastern Creek straight, the front gets very "floaty" to the point of it being scary. I need more down force on the front. You can even start to feel it becoming unstable at Wakefield. I've tried putting sand bags in the frunk though they make no difference. To be sure about aero effectiveness, you really need to do wind tunnel testing with load sensors etc
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Admin
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Re:The MR2 Australia SW20
2014/01/10 19:38:42
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track_mr2
I saw your lap times on NATSOFT for Wakefield, what a weapon. Well done on the build, looks the part too.
I can thank the new Hoosier R6 tyres for the good lap times. They are the best tyres I have ever bought. Great grip and they didn't overheat. Cheap too.
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track_mr2
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Re:The MR2 Australia SW20
2014/01/10 21:21:18
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Admin
I can thank the new Hoosier R6 tyres for the good lap times. They are the best tyres I have ever bought. Great grip and they didn't overheat. Cheap too.
Your idea of cheap and mine might be different, lol. I'm running Federal RSR's as they were the cheapest track oriented type tyre I could find. They grip well enough for the track but will definitely look into those R6's when I finally wear them out. I'm just kicking around for a bit of fun on the track, not too serious about my lap times at this stage.
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track_mr2
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Re:The MR2 Australia SW20
2014/01/10 21:28:48
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Admin
Thanks Pat. To be honest, I haven't noticed a difference. The car does however seriously need a splitter on the front. At high speeds - i.e. Eastern Creek straight, the front gets very "floaty" to the point of it being scary. I need more down force on the front. You can even start to feel it becoming unstable at Wakefield. I've tried putting sand bags in the frunk though they make no difference.
To be sure about aero effectiveness, you really need to do wind tunnel testing with load sensors etc
I run a front splitter (and have a spare carbon fiber one) on mine and no rear wing and the front doesn't get floaty at all, even at very high speed. Could your rear wing be unbalancing the car? I definitely feel that I lack down force though on the back section of phillip island though, would love to have a ton more down force pushing me down for the high speed sweepers. Straights are golden though and the car always feels balanced.
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kameleon
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Re:The MR2 Australia SW20
2014/01/10 22:06:26
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WIDEMR
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Re:The MR2 Australia SW20
2014/01/10 22:22:28
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Admin
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Re:The MR2 Australia SW20
2014/01/11 11:11:52
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Great photos! Many thanks
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Admin
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Re:The MR2 Australia SW20
2014/01/11 11:13:33
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track_mr2
I run a front splitter (and have a spare carbon fiber one) on mine and no rear wing and the front doesn't get floaty at all, even at very high speed. Could your rear wing be unbalancing the car? I definitely feel that I lack down force though on the back section of phillip island though, would love to have a ton more down force pushing me down for the high speed sweepers. Straights are golden though and the car always feels balanced.
You may be right. I haven't driven the car enough to remember what it felt like before the wing was fitted. I'll make and fit a front splitter and report back here on how the car handles after.
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Admin
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Re:The MR2 Australia SW20
2014/01/12 13:04:16
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Admin
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roryh
What turbo have you got? If it is ct20b you need different turbo or somehow get an external gate - you can't port the stock one large enough to stop creep. EC main straight for instance - you are just producing too much exhaust gas at 200kmh+. And the faster you go the worse it gets.
Thread revival! I fixed the boost creep issue with my CT26 by enlarging the wastgate holes as well as porting the internals of the turbo so the gas can more easily turn the corner and flow out of the wastegate. There you go - it can be done! :-)
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Admin
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Admin
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Here is the latest video from Eastern Creek. Yes the car is still going! woohoo! I've finally built a reliable SDUB. There were 60+ cars on the track at the same time.
post edited by Admin - 2014/10/22 20:39:41
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rikkir
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Great car and great driving!
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