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Norcal Lemons update!!!! 187whp 246torque :>)

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Old 11-02-2009, 02:46 AM
  #61  
heinrich
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Originally Posted by vwdmc16
... working on transforming the rear into something unique.
Kamm tail.
Old 11-02-2009, 04:31 AM
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something 942-esque
Old 11-02-2009, 10:48 AM
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Bill Ball
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Originally Posted by heinrich
Kamm tail.
+1.

As proven on the Leman winning Ford Cobra Daytona Coupe. Found to reduce drag, increase top speed and improve fuel efficiency by 20+%. Top speed on the M1 was 150 before and 185 after the tail mod. If you remove the rear bumper cover you'll see there is room to create something close to the Kammback. Some will think it is "butt" ugly perhaps, but I think it's beautiful. Plus it works.

Here's the designer Pete Brock with the Kammback.
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Old 11-02-2009, 10:54 AM
  #64  
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Welcome back Bill
Old 11-02-2009, 11:03 AM
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Originally Posted by heinrich
Welcome back Bill
Thanks, H'man. Over all I am VERY, VERY well and if today's doctor visits straighten out my reluctant tummy and problems falling asleep, I will be damn near perfect. Not bad for 12 days after getting run over by a surgical train. I can't tell you how happy I am.
Old 11-02-2009, 12:38 PM
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Originally Posted by Bill Ball
Over all I am VERY, VERY well and if today's doctor visits straighten out my reluctant tummy and problems falling asleep, I will be damn near perfect.
Old 11-02-2009, 12:41 PM
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PorKen
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Originally Posted by heinrich
Kamm tail.
+2
Old 11-02-2009, 12:44 PM
  #68  
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Originally Posted by Bill Ball
Thanks, H'man. Over all I am VERY, VERY well and if today's doctor visits straighten out my reluctant tummy and problems falling asleep, I will be damn near perfect. Not bad for 12 days after getting run over by a surgical train. I can't tell you how happy I am.
I am happy as well Bill. Thast is a lot to go through and be back in living colour so fast (sorry for the hijack Brian!)
Old 11-02-2009, 12:45 PM
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Hadn't thought about it but WikiPedia (I think correctly) states that many cars have Kamm tails ... the fugly Honda Insight for example.....
Old 11-02-2009, 07:39 PM
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Originally Posted by Bill Ball
+1.

As proven on the Leman winning Ford Cobra Daytona Coupe. Found to reduce drag, increase top speed and improve fuel efficiency by 20+%. Top speed on the M1 was 150 before and 185 after the tail mod. If you remove the rear bumper cover you'll see there is room to create something close to the Kammback. Some will think it is "butt" ugly perhaps, but I think it's beautiful. Plus it works.

Here's the designer Pete Brock with the Kammback.
Hmm
I also like the Kamm tail concept.....plus it would sure look cool....and better aero to boot!!

Clint I think we should work on this....
Old 11-02-2009, 09:11 PM
  #71  
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Plus, imagine if you came up with something cool we fellows could do to our 928's
Old 11-02-2009, 09:22 PM
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Originally Posted by heinrich
Plus, imagine if you came up with something cool we fellows could do to our 928's
I wonder exactly what are the requirements to achieve the better aerodynamics...like how high the rear tail needs to be in relation to the roof..the angle from roof to tail...angle from tail to bottom of car, etc....

We won't have time to get it done before the 1st race....but should get it going for the next lemons race at Infineon in March!!!
Old 11-02-2009, 09:29 PM
  #73  
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AFAIK, the tail is separate from the Kamm-back. The flat rear is for less drag, the tail is for more drag/downforce.

Basically, you want to cut off the end of the car where the body starts to curve inward. Airflow after the cutoff acts as if the empty space was the tail of a teardrop.
Old 11-03-2009, 03:41 AM
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Originally Posted by IcemanG17
Hmm
I also like the Kamm tail concept.....plus it would sure look cool....and better aero to boot!!

Clint I think we should work on this....

nope cant do, already made it into a wagon.


making a kamm *** on this car would deadly stupid in lemons where accidents happen quite often, we would have to install a fuel cell farther forward into the car, i sure as hell wouldnt drive it with just a inch of crumple room before the plastic fuel tank, no thanks. maybe later we can make a wagon kamm tail that sticks out a few more inches, that might look really good

also the car now has most of a cage!!, not much left to go, not much time either before the test day
Old 11-03-2009, 02:25 PM
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I think you can do this and not loose any tank protection. My thought was not to discard the tail, but to cut into and work in a dished out surface similar to the Kammback section. I wish I could do a photoshop.

They got 20+%. Just fooling around you should be able to get 8-10%. Now, this is a high-speed benefit. Not sure it applies to Lemons as it did to the Mulsanne at Leman.


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