Miata buttsexes Third Gear - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Media Got any pics or vids to share?

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 05-10-2016, 09:53 AM   #21
Junior Member
 
Join Date: Sep 2008
Location: Chicago, IL
Posts: 235
Total Cats: 4
Default

Nice runs! What's your setup?
Slider is offline   Reply With Quote
Old 05-10-2016, 11:04 AM   #22
Elite Member
iTrader: (4)
 
Join Date: Sep 2006
Location: Charlotte, NC
Posts: 3,052
Total Cats: 8
Default

Quote:
Originally Posted by Braineack View Post
we used to change drifting to buttsexing.
One of the reason why I heart this place so much...

Title change ftw
Efini~FC3S is offline   Reply With Quote
Old 05-10-2016, 11:06 AM   #23
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,199
Total Cats: 2,584
Default

Quote:
Originally Posted by Braineack View Post
we used to change drifting to buttsexing.
you don't say?
18psi is offline   Reply With Quote
Old 05-17-2016, 01:42 AM   #24
Newb
Thread Starter
 
Join Date: Dec 2015
Posts: 7
Total Cats: -36
Default

Its really weird...i'm still rocking the broken hood and I haven't overheated yet. I guess everyone was wrong

Event from last week (below):
The Drifting Miata is offline   Reply With Quote
Old 05-17-2016, 06:31 AM   #25
ʎpunq qoq
 
Join Date: Jan 2014
Location: Western Australia
Posts: 502
Total Cats: 100
Default

Ignore them all...

The pressure zone at the base of the windscreen does exist when you are running on a race track at decent speeds. However, at lower speeds there isn't enough airflow to make much difference in pressure, especially given the airflow isn't directly passing over the car from front to back like on a track. My guess is that the radiator fan will be making a larger pressure differential than the airflow over the windscreen. Just make sure you run the stock under-tray at least.

No one has actually done any testing at slower speeds so here is your chance to prove them wrong. Do a couple of runs back to back with the hood down and up and datalog coolant temps and post the results. If you're really keen add a couple of tethers along the trailing edge of the bonnet and see which way they go. If they get sucked into the bonnet you know you're wrong.

I personally don't like the lifted hood, but hey if you like the look, run it.
Madjak is offline   Reply With Quote
Old 05-17-2016, 10:03 AM   #26
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,199
Total Cats: 2,584
Default

Quote:
Originally Posted by Madjak View Post
Ignore them all...

The pressure zone at the base of the windscreen does exist when you are running on a race track at decent speeds. However, at lower speeds there isn't enough airflow to make much difference in pressure, especially given the airflow isn't directly passing over the car from front to back like on a track. My guess is that the radiator fan will be making a larger pressure differential than the airflow over the windscreen. Just make sure you run the stock under-tray at least.

No one has actually done any testing at slower speeds so here is your chance to prove them wrong. Do a couple of runs back to back with the hood down and up and datalog coolant temps and post the results. If you're really keen add a couple of tethers along the trailing edge of the bonnet and see which way they go. If they get sucked into the bonnet you know you're wrong.

I personally don't like the lifted hood, but hey if you like the look, run it.
What makes you think it hasn't been done?
The fact that you didn't see it?
18psi is offline   Reply With Quote
Old 05-17-2016, 12:06 PM   #27
ʎpunq qoq
 
Join Date: Jan 2014
Location: Western Australia
Posts: 502
Total Cats: 100
Default

Quote:
Originally Posted by 18psi View Post
What makes you think it hasn't been done?
The fact that you didn't see it?
Well yes. Has anyone seen testing done at low speed or whilst drifting? I haven't.
Madjak is offline   Reply With Quote
Old 05-17-2016, 12:53 PM   #28
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 2,407
Total Cats: 200
Default

I did. I used a manometer at a bunch of different speeds. Not drifting though. Although miniscule in psi. There was always positive pressure at the base of the winshield. Miniscule psi could still be a tremendous amount of CFM.
ryansmoneypit is offline   Reply With Quote
Old 05-17-2016, 10:20 PM   #29
ʎpunq qoq
 
Join Date: Jan 2014
Location: Western Australia
Posts: 502
Total Cats: 100
Default

The windscreen base will always cause a low pressure zone with forward movement. That doesn't mean that air in the engine bay isnt at a higher pressure though. You need to measure both sides of the bonnet to see which way air will flow.

My guess is that at lower speeds the engine bay is at a higher pressure due to the mouth and radiator fan than the base of the windscreen. At what speed it switches over is anyones guess but I figure its somewhere between 10 and 40 mph.
Madjak is offline   Reply With Quote
Old 05-18-2016, 06:56 AM   #30
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 2,407
Total Cats: 200
Default

I measured inside the washer/cowl area.
ryansmoneypit is offline   Reply With Quote
Old 05-18-2016, 07:53 AM   #31
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 2,407
Total Cats: 200
Default

This thread reminds me of my local autocross. Three years ago, one guy was frantically spraying his tires and wheels after a run. He explained to me that he was "stopping his tires from heat cycling ", and that he didn't want the tires to overheat. I started to wonder if he understood what a cycle was. Then I asked if I could measure the temp of his tires after a run. He agreed to let me and I measured across the tire width.

Run 2: tires were 25 degrees under operating temp. Scratched his head and ran another lap without watering his tires.
Run 3: tires were still 5-10 degrees under temp. He had run his two fastest times of the day, with still slightly under temp tires.

Run 4: He couldn't take it and had to spray his tires, just had to. Ran slower, blamed on driving.

Two years later that same dude is still watering his wheels and tires.

Moral of the story: You can lead a horse to water, but you can't make them drink.
ryansmoneypit is offline   Reply With Quote
Old 05-18-2016, 09:10 AM   #32
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,684
Total Cats: 1,562
Default

Hyper reroute.
sixshooter is online now   Reply With Quote
Old 05-18-2016, 10:00 AM   #33
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,199
Total Cats: 2,584
Default

Quote:
Originally Posted by ryansmoneypit View Post
This thread reminds me of my local autocross. Three years ago, one guy was frantically spraying his tires and wheels after a run. He explained to me that he was "stopping his tires from heat cycling ", and that he didn't want the tires to overheat. I started to wonder if he understood what a cycle was. Then I asked if I could measure the temp of his tires after a run. He agreed to let me and I measured across the tire width.

Run 2: tires were 25 degrees under operating temp. Scratched his head and ran another lap without watering his tires.
Run 3: tires were still 5-10 degrees under temp. He had run his two fastest times of the day, with still slightly under temp tires.

Run 4: He couldn't take it and had to spray his tires, just had to. Ran slower, blamed on driving.

Two years later that same dude is still watering his wheels and tires.

Moral of the story: You can lead a horse to water, but you can't make them drink.
You're trying to explain this to two guys who consider drifting a legitimate motorsport, lol.
18psi is offline   Reply With Quote
Old 05-18-2016, 10:54 AM   #34
Senior Member
iTrader: (1)
 
Join Date: Oct 2009
Posts: 1,436
Total Cats: 58
Default

Quote:
Originally Posted by Madjak View Post
At what speed it switches over is anyones guess but I figure its somewhere between 10 and 40 mph.
The moon is somewhere between the earth and sun.

My guess is between 11.4 and 14.2 mph.
Enginerd is offline   Reply With Quote
Old 05-18-2016, 11:29 AM   #35
Elite Member
iTrader: (5)
 
Erat's Avatar
 
Join Date: Oct 2011
Location: Detroit
Posts: 4,199
Total Cats: 260
Default

Quote:
Originally Posted by Enginerd View Post
The moon is somewhere between the earth and sun.
Sometimes, but not always.

Erat is offline   Reply With Quote
Old 05-18-2016, 11:30 AM   #36
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,199
Total Cats: 2,584
Default

indubitably
18psi is offline   Reply With Quote
Old 05-18-2016, 01:50 PM
sixshooter
This message has been deleted by sixshooter.
Old 06-08-2016, 04:40 AM
karinsheng
This message has been deleted by sixshooter. Reason: douche the spammer
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
stuck in 5th gear, not in reverse No_name923 Suspension, Brakes, Drivetrain 14 08-14-2017 10:34 AM
White turd bonez8 Build Threads 37 04-03-2017 07:11 PM
404whp/389wtq NA For Sale...Sadly :( jbguillo Cars for sale/trade 16 05-20-2016 01:26 AM
6 speed lost 4th pdexta Suspension, Brakes, Drivetrain 16 03-30-2016 11:36 AM
A little backwards, but Hello alsmedic Meet and Greet 6 03-13-2016 04:14 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:12 AM.