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Author Topic: Rear Engine Modified Roadster Build  (Read 290797 times)

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Offline Captthundarr

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Re: Rear Engine Modified Roadster Build
« Reply #345 on: November 18, 2011, 12:59:39 PM »
Tony, would that be high pressure or velocity under the section in front of the cockpit. I have a '27 roadster hot rod project that never got past the roller stage and I have been contemplating a RMR build for the OHIO Mile, After I get the wife LSR Camaro done of course. So I follow folks build closely.
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Offline WOODY@DDLLC

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Re: Rear Engine Modified Roadster Build
« Reply #346 on: November 18, 2011, 02:02:23 PM »
The plots are relative pressure on the flow trajectories.
Red is above atmospheric and blue is below.
Try that with your wind tunnel smoke!  :-o
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Offline Stan Back

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Re: Rear Engine Modified Roadster Build
« Reply #347 on: November 18, 2011, 02:15:21 PM »
Don't remember the '27s looking so v-shaped from the front?
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Offline 4-barrel Mike

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Re: Rear Engine Modified Roadster Build
« Reply #348 on: November 18, 2011, 02:17:45 PM »
That's a '27??  :-o

 :cheers:

Mike
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Offline Dynoroom

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Re: Rear Engine Modified Roadster Build
« Reply #349 on: November 18, 2011, 02:31:47 PM »
Tony, Those are not the same pictures you sent to me! WTH?
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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #350 on: November 18, 2011, 02:38:58 PM »
Quote from: Dynoroom on November 18, 2011, 02:31:47 PM
Tony, Those are not the same pictures you sent to me! WTH?

Sh, Sh, Sh   Tony
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Offline Tman

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Re: Rear Engine Modified Roadster Build
« Reply #351 on: November 18, 2011, 03:44:16 PM »
That computer modeling is cool. Wish I knew enough to do it for our lakester AND know what the heck I am looking at!
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Offline Stan Back

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Re: Rear Engine Modified Roadster Build
« Reply #352 on: November 18, 2011, 04:11:22 PM »
Maybe it's a Pierce-Arrow with both the pierce and the aero.
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Offline Sideshow

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Re: Rear Engine Modified Roadster Build
« Reply #353 on: November 18, 2011, 04:38:01 PM »
Quote from: Tman on November 18, 2011, 03:44:16 PM
That computer modeling is cool.
Copy that Tman. I recently scored a copy of solidworks, and man, just getting through the tutorials has me scratching my head!

Looks sweet Tony! :mrgreen:
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Offline JamesJ

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Re: Rear Engine Modified Roadster Build
« Reply #354 on: November 18, 2011, 04:38:27 PM »
Tony,   On your pictures in front of the nose is shows an increase in pressure then reduces as it moves further away from the car, I guess that is because of the pressure build up off the nose?  
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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #355 on: November 18, 2011, 05:16:23 PM »
Quote from: 4-barrel Mike on November 18, 2011, 02:17:45 PM
That's a '27??  :-o

 :cheers:

Mike

At speed the air makes it look like a '27.  :-D :-D :-D Tony
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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #356 on: November 18, 2011, 05:21:49 PM »
Guys, I cant take credit for this.  All of it is Woody's hard work, and without him none of this would be possible.  Tony
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Offline Peter Jack

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Re: Rear Engine Modified Roadster Build
« Reply #357 on: November 18, 2011, 09:22:43 PM »
Tony or Woody:

Would there be an advantage to widening the front axle so that the front and rear wheels were lined up? I realize that it would present more frontal area or at least different frontal area from the wider front end components but would aligning the tires with the backs directly behind the fronts be an advantage?

Tony, you need to use a different avatar for the posts where we're supposed to concentrate on the subject contained in the post. :evil: :evil:

Pete
« Last Edit: November 18, 2011, 09:25:48 PM by Peter Jack »
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Offline WOODY@DDLLC

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Re: Rear Engine Modified Roadster Build
« Reply #358 on: November 18, 2011, 10:43:37 PM »
Quote from: Peter Jack on November 18, 2011, 09:22:43 PM
Tony or Woody:

Would there be an advantage to widening the front axle so that the front and rear wheels were lined up? I realize that it would present more frontal area or at least different frontal area from the wider front end components but would aligning the tires with the backs directly behind the fronts be an advantage?

Tony, you need to use a different avatar for the posts where we're supposed to concentrate on the subject contained in the post. :evil: :evil:

Pete

Pete, we did an ANOVA study on the wheel tracks narrow and/or wide. ANOVA is short for Analysis of Variation.

Turns out they are pretty happy where they're at! But this will always be case-specific based on the neighboring geometry!

F1 & Indy car body shapes are roughly based on the flow around the 4 open wheels or in their case "spinning round bricks"!

Tony, I think these guys are starting to get wise to us!  :cheers:
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Offline krusty

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Re: Rear Engine Modified Roadster Build
« Reply #359 on: November 19, 2011, 08:15:45 AM »
   
     Tony - wow! Make sure I know when you take that thing thru tech so I can listen to the whining and watch the headscratching. Sorry I missed you @ Speedweek.

     @Tman - "AND know what the heck I am looking at!"  You and me both! It also applies to data acquisition analysis.

     vic
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