Toms under panel diffuser
Does not look like a good aero piece so not really worth molding...nothing exceptional there.
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Driver
Joined: Jun 2006
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From: texas
I have spent several years investigating diffuser aerodynamics because I am working on one for the IS300. I am not an expert by any means, but I do recognize the design trends set by F1 racing and how they impact functionality. I did not mean to downplay your purchase, because I know it was expensive. I was just saying that it does not look like a complicated design with any secret sauce in it. Its just a coverplate with some fins that will look a little better. Just not worth copying IMO, but then again I am not one to copy any one else's designs.
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Thread Starter
Driver
Joined: Jun 2006
Posts: 146
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From: texas
The issue I see is the fin design is not a cutting design, the pieces are blocky and non divergent. You can see the OE version has a foil design which is better at cutting through air.
I have spent several years investigating diffuser aerodynamics because I am working on one for the IS300. I am not an expert by any means, but I do recognize the design trends set by F1 racing and how they impact functionality. I did not mean to downplay your purchase, because I know it was expensive. I was just saying that it does not look like a complicated design with any secret sauce in it. Its just a coverplate with some fins that will look a little better. Just not worth copying IMO, but then again I am not one to copy any one else's designs.
I have spent several years investigating diffuser aerodynamics because I am working on one for the IS300. I am not an expert by any means, but I do recognize the design trends set by F1 racing and how they impact functionality. I did not mean to downplay your purchase, because I know it was expensive. I was just saying that it does not look like a complicated design with any secret sauce in it. Its just a coverplate with some fins that will look a little better. Just not worth copying IMO, but then again I am not one to copy any one else's designs.
I agree with what your saying too! I'll take more detail pics of this diffuser later. IMO I think the TOMS diffuser causes less drag cause it sits closer to the frame. The OEM diffuser sticks out a lot from underneath.
The design looks less than optimal. It definitely needs to have some sort of air foil design like the OEM. The Tom's fins are probably good enough for a rudder on a toy boat though. Anyone who understands fluid dynamics can take a look at this diffusser and see how lacking it is. I can't believe Tom's is able to sell products like these for a big profit margin.
BTW I have been working on this for longer than I can remember..but getting closer to the final version.
results from more final detail work today. The fins are slightly foiled and the will be closed at both ends, welded and ground to smooth. This is the entire rear end undertray for the IS300. It keeps air going where it should be
results from more final detail work today. The fins are slightly foiled and the will be closed at both ends, welded and ground to smooth. This is the entire rear end undertray for the IS300. It keeps air going where it should be
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Last edited by FIGS; May 25, 2010 at 05:33 PM.
__________________
Redefining Lexus Aftermarket Parts Since 2001
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BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
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RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
Redefining Lexus Aftermarket Parts Since 2001
-- We are your Lexus suspension experts--
BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
Links - Arms - SuperPro Poly Bushings - Solid Bearing Conversions - Motor Mounts
RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
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