General Miata Chat A place to talk about anything Miata

Electrons vs. molecules: Electric Power Steering Conversion

Thread Tools
 
Search this Thread
 
Old 05-10-2013, 01:33 PM
  #41  
Elite Member
iTrader: (2)
 
triple88a's Avatar
 
Join Date: Apr 2006
Location: Chicago, IL
Posts: 10,454
Total Cats: 1,799
Default

Originally Posted by Godless Commie
Yes, but pump pressure is pretty much standard across the automotive industry.
Both the stock Miata pump and this one deliver about 85 bars, which is roughly 1200-1250 psi.
Simply reduce the voltage going to it or make a little bypass valve to spit some of the fluid back into the reservoir to release pressure.
triple88a is offline  
Reply
Leave a poscat -1 Leave a negcat
Old 05-10-2013, 01:47 PM
  #42  
Elite Member
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,976
Total Cats: 355
Default

Originally Posted by Joe Perez
You are fortunate that the NBs do not conjoin the clutch and neutral wiring like the NAs did- they come into the ECU on two discrete lines.
Unfortunately, this is not true on all 99-00 NBs. Some still have the clutch and neutral switch on 1 wire.
Reverant is offline  
Old 05-10-2013, 01:48 PM
  #43  
Elite Member
Thread Starter
iTrader: (2)
 
Godless Commie's Avatar
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 3,214
Total Cats: 1,687
Default

Mine are emancipated...
Godless Commie is offline  
Old 05-10-2013, 01:50 PM
  #44  
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,479
Total Cats: 104
Default

Originally Posted by Godless Commie
Mine are emancipated...
And you have made the proclamation of it.
Leafy is offline  
Old 05-10-2013, 02:20 PM
  #45  
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,022
Total Cats: 6,588
Default

Originally Posted by Reverant
Unfortunately, this is not true on all 99-00 NBs. Some still have the clutch and neutral switch on 1 wire.
Huh, that sucks. Is this a Euro-specific thing? (I only have the wiring diagrams for the Canada / US models.)
Joe Perez is offline  
Old 05-10-2013, 02:21 PM
  #46  
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,022
Total Cats: 6,588
Default

Originally Posted by Godless Commie
I'm afraid I have not made my concern sufficiently clear about winter months.
What I was trying to say is, I would like the pump to be off till the engine starts. That way, I would not be draining precious current from the battery before cranking the car.
Ah, well there you go. Looks like you've got a fine setup, then.
Joe Perez is offline  
Old 05-10-2013, 02:37 PM
  #47  
Elite Member
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,976
Total Cats: 355
Default

I can verify that the Euro (and actual JDM) have a single wire.

I have also seen at least one USDM card with 1 wire.
Reverant is offline  
Old 05-10-2013, 02:39 PM
  #48  
Elite Member
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,976
Total Cats: 355
Default

Originally Posted by Godless Commie
Please take a look at the output settings and tell me if I have this right guys..

Basically, I want the pump off while cranking, and only come on about 5 seconds after the engine fires, and if the RPM is greater than 600.

This output will be connected to the "-" side of the relay trigger. Relay trigger "+" will be taken from IGN.

EDIT: whoops.... second condition at the bottom should read "seconds > 5.0" I will correct that.

Your settings look correct, except for the seconds issue of course.

Btw the "Seconds" variable is how long the MS is powered, not how long the engine has been running.

I've asked the devs to add a "running time" variable but they didn't like it.
Reverant is offline  
Old 05-10-2013, 02:56 PM
  #49  
Senior Member
iTrader: (1)
 
krissetsfire's Avatar
 
Join Date: Sep 2008
Location: Tucson, Arizona
Posts: 883
Total Cats: 56
Default

Awesome thread. I wish you could do this with a/c as well :(. I think you'd need a 300amp alternator though...hah... anyway good work sir!
krissetsfire is offline  
Old 05-10-2013, 03:00 PM
  #50  
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,022
Total Cats: 6,588
Default

It's a shame that the ASE timer isn't accessible here- that would provide a usable workaround.
Joe Perez is offline  
Old 05-10-2013, 03:12 PM
  #51  
Elite Member
iTrader: (2)
 
triple88a's Avatar
 
Join Date: Apr 2006
Location: Chicago, IL
Posts: 10,454
Total Cats: 1,799
Default

Originally Posted by krissetsfire
Awesome thread. I wish you could do this with a/c as well :(. I think you'd need a 300amp alternator though...hah... anyway good work sir!
Well the ac is clutch activated so it doesnt matter.
triple88a is offline  
Reply
Leave a poscat -1 Leave a negcat
Old 05-10-2013, 03:13 PM
  #52  
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,479
Total Cats: 104
Default

Originally Posted by triple88a
Well the ac is clutch activated so it doesnt matter.
More along the lines of. I wanna put a no compromise turbo manifold in and still have AC, so the ac compressor needs to go somewhere else.
Leafy is offline  
Old 05-10-2013, 03:21 PM
  #53  
Elite Member
iTrader: (2)
 
triple88a's Avatar
 
Join Date: Apr 2006
Location: Chicago, IL
Posts: 10,454
Total Cats: 1,799
Default

Run top mount and cut the frame like fae
triple88a is offline  
Old 05-10-2013, 03:23 PM
  #54  
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,022
Total Cats: 6,588
Default

Originally Posted by Leafy
More along the lines of. I wanna put a no compromise turbo manifold in and still have AC, so the ac compressor needs to go somewhere else.
First thought: Seriously? In a Miata?

Second thought: For real?

Third thought: Just buy a household window-style air conditioner and strip it down to the bare compressor. Install a suitably sized 120v inverter in the car, and use it to drive the compressor.

Fourth thought: Since you are clearly of baller-status what with your air-conditioned convertible and all, you can probably afford to plunk down the cash for a marine-grade DC powered aircon system: http://www.dometic.com/enus/Americas...ctdataid=80905
Joe Perez is offline  
Old 05-10-2013, 03:39 PM
  #55  
Elite Member
Thread Starter
iTrader: (2)
 
Godless Commie's Avatar
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 3,214
Total Cats: 1,687
Default

Since I did not have the time to take pics during the install, I felt like I need to explain how I actually mounted the pump.

So, here we go.. (Hardware in pics is not actual stuff, it's all for illustrative purposes)

Here is the clamp I was talking about. The MDF board I cut and drilled is the car's chassis in this case.



Attached Thumbnails Electrons vs. molecules: Electric Power Steering Conversion-20130510215803.jpg   Electrons vs. molecules: Electric Power Steering Conversion-20130510215834.jpg  
Godless Commie is offline  
Old 05-10-2013, 03:41 PM
  #56  
Elite Member
Thread Starter
iTrader: (2)
 
Godless Commie's Avatar
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 3,214
Total Cats: 1,687
Default

The bolt is installed from the bottom of the sheetmetal/chassis, and two nuts are used to secure the bolt to the chassis, and then the clamp on it.


Attached Thumbnails Electrons vs. molecules: Electric Power Steering Conversion-20130510220014.jpg   Electrons vs. molecules: Electric Power Steering Conversion-20130510220102.jpg  
Godless Commie is offline  
Old 05-10-2013, 03:43 PM
  #57  
Elite Member
Thread Starter
iTrader: (2)
 
Godless Commie's Avatar
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 3,214
Total Cats: 1,687
Default

Then, it's a matter of substituting long enough 6mm bolts (or allthread in my case) to reinforce the installed clamp against torsional loads. Nuts are used at all contact points to lock the whole thing up.

This makes for an incredibly solid mount. I used three of these, and I am content.



Attached Thumbnails Electrons vs. molecules: Electric Power Steering Conversion-20130510221356.jpg   Electrons vs. molecules: Electric Power Steering Conversion-20130510221405.jpg   Electrons vs. molecules: Electric Power Steering Conversion-20130510221449.jpg  
Godless Commie is offline  
Old 05-10-2013, 03:51 PM
  #58  
Elite Member
Thread Starter
iTrader: (2)
 
Godless Commie's Avatar
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 3,214
Total Cats: 1,687
Default

Originally Posted by Joe Perez
First thought: Seriously? In a Miata?

Second thought: For real?

Third thought: Just buy a household window-style air conditioner and strip it down to the bare compressor. Install a suitably sized 120v inverter in the car, and use it to drive the compressor.

Fourth thought: Since you are clearly of baller-status what with your air-conditioned convertible and all, you can probably afford to plunk down the cash for a marine-grade DC powered aircon system: products - Dometic
For real...

I too am planning on installing AC in my car. There are days in summer when the sun just fries you, and the car feels like an oven if the top is up, in stop and go traffic. It's no picnic sitting in traffic covered in sweat.
Godless Commie is offline  
Old 05-10-2013, 03:53 PM
  #59  
Elite Member
Thread Starter
iTrader: (2)
 
Godless Commie's Avatar
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 3,214
Total Cats: 1,687
Default

Originally Posted by Reverant
Btw the "Seconds" variable is how long the MS is powered, not how long the engine has been running.

I've asked the devs to add a "running time" variable but they didn't like it.
Damn...
Oh well, I'll just plug in 20 seconds in there then.. That'll give me plenty time, I hope.

Rev, please spoonfeed me.. What terminal is the #1 output on please?
Godless Commie is offline  
Old 05-10-2013, 03:59 PM
  #60  
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,022
Total Cats: 6,588
Default

Originally Posted by Godless Commie
For real...

I too am planning on installing AC in my car.
Yes, but you live in Turkey, where it actually gets hot from time to time.

Leafy lives in Massachusetts, where the average summertime peak temperatures are in the upper 70s (F) / mid 20s (C).
Joe Perez is offline  


Quick Reply: Electrons vs. molecules: Electric Power Steering Conversion



All times are GMT -4. The time now is 11:47 PM.