Splitters and accouterments - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Aerodynamics Splitters, spoilers, and all the aero advice you can handle.
Sponsored by:
Sponsored by:

Splitters and accouterments

Old 01-08-2019, 01:58 PM
  #21  
Supporting Vendor
Thread Starter
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 5,894
Total Cats: 1,641
Default

If I am reading your plans correctly, the step between the two plates will be 1/2". I don't think that's enough to matter on a structure as aerodynamically "dirty" as a Miata underbody. On an Indycar or NASCAR, both very finely tuned aerodynamic shapes, yes.
I think 1/2" is overkill for the two plates. That's 1" on birch. If clamped together over a wide enough area, they effectively become one. That's a lot of mass. I'd consider doing both plates of 3/8" and making the lip section a bit less area. Just to save mass. When it's all bolted together and on the car, it should still support your weight when it's extended around 4" from the dam.
__________________


www.facebook.com/SuperMiata

949RACING.COM Home of the 6UL wheel

.27 SNR
emilio700 is offline  
Old 01-08-2019, 02:58 PM
  #22  
Junior Member
 
Join Date: Sep 2010
Location: Dallas, TX
Posts: 68
Total Cats: 3
Default

Thanks for your advice. I will do my best to minimize the mass. I went with 1/2" for two reasons.
1. I only wanted to buy one sheet of plywood.
2. I was worried that after countersinking the grooves in the splitter with 3/8", there would only be about 1/8" of material clamped under the washers. That seemed like a bit thin. 1/2" gives me more like 1/4" of material.
Another option would be to use 3/8 on both panels, but not countersink the grooves. The bolt heads would protrude but not by much.
Or, if you think 1/8" of material at attachment points (using 2 layers of 3/8") + cables out front would still suffice, I will try that.

Thanks again.
pcormier66 is offline  
Old 01-08-2019, 03:15 PM
  #23  
Senior Member
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 911
Total Cats: 33
Default

I would think dome head bolts and the thinner lighter ply would be better,IMO anyway.

Thanks for the post, it reminds me to make a better version of our basic splitter as well. Same reason, adjustability/fine tuning but mostly for getting on and off the trailer as well
mx5-kiwi is offline  
Old 01-08-2019, 03:22 PM
  #24  
Junior Member
 
Join Date: Sep 2010
Location: Dallas, TX
Posts: 68
Total Cats: 3
Default

Thanks.
pcormier66 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JimAtFSU
General Miata Chat
107
09-19-2012 08:56 AM
mazda/nissan
General Miata Chat
33
01-30-2009 03:53 PM


Thread Tools
Search this Thread
Quick Reply: Splitters and accouterments


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.