Go Back   EcoModder Forum > EcoModding > Instrumentation > OpenGauge / MPGuino FE computer
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-20-2010, 11:07 PM   #11 (permalink)
dcb
needs more cowbell
 
dcb's Avatar
 
Join Date: Feb 2008
Location:
Posts: 5,038

pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

schnitzel - '01 Volkswagen Golf TDI
90 day: 53.56 mpg (US)
Thanks: 157
Thanked 266 Times in 209 Posts
thecheese429 has blazed the trail on "aftermarket" vss here:
http://ecomodder.com/forum/showthrea...s-13293-2.html

re: abs sensor, definitely maybe.

__________________
WINDMILLS DO NOT WORK THAT WAY!!!
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-13-2010, 11:21 AM   #12 (permalink)
Master EcoModder
 
Join Date: Oct 2009
Location: Phoenix AZ
Posts: 547
Thanks: 4
Thanked 17 Times in 13 Posts
What about the old add on MPG computer and cruse control sysyem??

It takes a small coil and a pair of magnets on the drive shaft?

I understand you can make the coil by takeing the coil out of a 12 volt relay.

Rich

Last edited by racprops; 08-13-2010 at 12:45 PM..
  Reply With Quote
Old 08-13-2010, 12:41 PM   #13 (permalink)
dcb
needs more cowbell
 
dcb's Avatar
 
Join Date: Feb 2008
Location:
Posts: 5,038

pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

schnitzel - '01 Volkswagen Golf TDI
90 day: 53.56 mpg (US)
Thanks: 157
Thanked 266 Times in 209 Posts
the coil doesn't make a sufficient signal at low speeds.
__________________
WINDMILLS DO NOT WORK THAT WAY!!!
  Reply With Quote
Old 08-13-2010, 12:45 PM   #14 (permalink)
Master EcoModder
 
Join Date: Oct 2009
Location: Phoenix AZ
Posts: 547
Thanks: 4
Thanked 17 Times in 13 Posts
Well the one on my old Mileage computer worked fine down to 1 MPH...

I know the cruse controls were program not to work lower than say 30 MPH and many would drop out at over 80 MPH, but the speedometer always read.

Rich
  Reply With Quote
Old 08-13-2010, 12:47 PM   #15 (permalink)
Master EcoModder
 
Join Date: Oct 2009
Location: Phoenix AZ
Posts: 547
Thanks: 4
Thanked 17 Times in 13 Posts
Also we could double the magnets for a finer reading and more signal...

Rich
  Reply With Quote
Old 02-07-2011, 08:26 PM   #16 (permalink)
halos.com
 
Join Date: Oct 2009
Location: Oklahoma City, OK
Posts: 528

ECONORAM - '07 Dodge RAM 1500 QC SLT flex-fuel
90 day: 18.16 mpg (US)

the Avenger - '08 Dodge Avenger SXT
90 day: 27.06 mpg (US)
Thanks: 385
Thanked 92 Times in 78 Posts
Send a message via Yahoo to ECONORAM
At last, I got a VSS rigged up on my truck. The factory VSS did not provide a signal that would trigger the MPGuino. After much trial and error, several attempts at trigger disks and lights, I have a working solution.

I used a piece of black corroplast, cut to about a 5 or 6 inch diameter disk. I then cut it from the edge to the center just so I could slip it over the driveshaft. I then made small cuts from the center, probably 8 in total counting the first long cut. I then cut 4 rectangular windows about an inch in from the outer edge, spread evenly around the disk. Any more and I didn't think the light sensor would do a good job picking up the signal. To clamp it to the driveshaft, I used a hose clamp. Had to reposition a few times to try to get the disk clamped evenly, and rather straight. I also had to run a zip tie to straddle the long cut I made, and looped it through the two closest holes to cinch it together a little more evenly.

I am using an ordinary cockpit gauge bulb, 12v, as the light source. It is hard wired into the cigarette lighter circuit, which is a switched 12v supply. The light sensor is an IR sensing LED from Radio Shack, p/n 276-145A NPN Silicon Infrared Phototransistor. I tried using phone cord for wiring, but ran it too close to the exhaust and had a meltdown. I have since replaced that with CAT-3 wiring, which has 6 wires instead of 4, and they are solid conductors, instead of braided. Worked better for me when positioning and soldering. I used 3 (red, black and green) for the light and sensor. Both share the red, the bulb uses the black as ground, and the sensor uses green to go back to the MPGuino...and to ground.

Installed pictures attached. Sorry, it is nighttime, and I used my phone. If needed, I can provide better pictures later.

And...ops checked good! Got the VSS signal set to 19360. 4 slots in the disk, 33 inch wheel/tire combo, and 5,280 feet in a mile. I will still keep eye-balling the fuel flow, as I have been driving that way for a year now.
Attached Thumbnails
Click image for larger version

Name:	CustomVSS1sml.JPG
Views:	36
Size:	84.2 KB
ID:	7787   Click image for larger version

Name:	CustomVSS2sml.JPG
Views:	33
Size:	83.9 KB
ID:	7788  
  Reply With Quote
The Following User Says Thank You to ECONORAM For This Useful Post:
dcb (02-08-2011)
Old 02-08-2011, 11:27 AM   #17 (permalink)
dcb
needs more cowbell
 
dcb's Avatar
 
Join Date: Feb 2008
Location:
Posts: 5,038

pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

schnitzel - '01 Volkswagen Golf TDI
90 day: 53.56 mpg (US)
Thanks: 157
Thanked 266 Times in 209 Posts
Homemade optical speedo signal FTW
__________________
WINDMILLS DO NOT WORK THAT WAY!!!
  Reply With Quote
Old 02-09-2011, 08:34 PM   #18 (permalink)
halos.com
 
Join Date: Oct 2009
Location: Oklahoma City, OK
Posts: 528

ECONORAM - '07 Dodge RAM 1500 QC SLT flex-fuel
90 day: 18.16 mpg (US)

the Avenger - '08 Dodge Avenger SXT
90 day: 27.06 mpg (US)
Thanks: 385
Thanked 92 Times in 78 Posts
Send a message via Yahoo to ECONORAM
Discovered one issue today. With a fresh coat of snow on the roads, the sensor wouldn't trigger the MPGuino. I figure the sun was reflecting enough light to mask what the bulb was putting out. When I hit a clear patch in the road, it'd pick right up again. Guess I need to stick that belly panel back on...

  Reply With Quote
Reply  Post New Thread


Tags
vss sensor speedometer

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to get instant fuel consumption from Megasquirt TELVM Instrumentation 11 08-29-2011 02:47 PM
Registering a car based reverse trike in CA Carwhisperer EcoModding Central 58 07-10-2011 07:12 AM
New CVT transmission electric-assist with electric assist Ptero Fossil Fuel Free 2 09-23-2010 10:41 PM
Flashing yellow light skyl4rk EcoModding Central 5 08-01-2010 01:57 PM
High speed motor wanted henrikga Motorcycles / Scooters 3 10-11-2009 07:19 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com