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GPS based speedometer sensors, anyone admit to using one?

Discussion in 'The Hokey Ass Message Board' started by Gearhead Graphics, Feb 12, 2013.

  1. Gearhead Graphics
    Joined: Oct 4, 2008
    Posts: 3,852

    Gearhead Graphics
    Member
    from Denver Co

    Looking at putting new gauges in my truck while I rewire it. Looking at some of the electronic speedometers and the GPS sending units. Might be nice to have an accurate reading no matter swapping gears or tires, and not having to run a mechanical cable out and through the firewall.

    Anyone running them or have any input about them?

    Specifically looking at the one from Jegs, seems to be adaptable to most units and at a better price than a lot of the "name" branded ones..
    http://www.jegs.com/i/JEGS+Performance+Products/555/41612/10002/-1
     
  2. kevinwalshe
    Joined: Apr 22, 2010
    Posts: 428

    kevinwalshe
    Member

    I was looking at the autometer one on the hamb homepage today. I'm kind of curious about them as well.
     
  3. I just read about them the other night, so I downloaded an app to my phone. It works really well. I knew my speedo was off about 5mph around town, but I didn't know it got worse the faster I went. 63 is 75. I wouldn't have a problem buying a GPS speedo for the dash. It would sure make it easy.
     
  4. A mate of mine got one from Speedhut and loves it .
     

  5. tudorkeith
    Joined: May 10, 2009
    Posts: 454

    tudorkeith
    Member

    I wouldn't hesitat to get one if i wasn't already set up electronically. besaides only you and whoever you tell will know
     
  6. garvinzoom
    Joined: Sep 21, 2007
    Posts: 1,169

    garvinzoom
    Member

    Awesome, didn't know such a thing existed.
     
  7. cmyhtrod
    Joined: Nov 29, 2008
    Posts: 360

    cmyhtrod
    Member
    from ct

    Does the GPS also work as a locator if the car is stolen?
     
  8. davidbistolas
    Joined: May 21, 2010
    Posts: 962

    davidbistolas
    Member

    Nope. None that I've seen. That's not a trivial add on, by the way. GPS is a one way protocol- satellites to reciever. For the reciever to call out it's location it would need a GSM/GPRS module and antenna- and then access to the cell phone network via a monthly bill. That gets pretty spendy.
     
  9. cmyhtrod
    Joined: Nov 29, 2008
    Posts: 360

    cmyhtrod
    Member
    from ct

    Thanks for the input.

    Lo Jack might not like it, but I would think there is a market for that option.
     
  10. The speedo never worked in my '30 so I just went with the flow. I recently got a speedometer app on my phone and it works great. I need to fashion a mount for the phone that isn't to ugly.
     
  11. zep058
    Joined: Jan 9, 2007
    Posts: 599

    zep058
    Member

    A mate has one that plugs in to 12v and you stick on the dash, not traditional, but is accurate and just throw it in the glove box when you get somewhere. My state is happy to book you if you creep up above the limit.
     
  12. MT26
    Joined: Oct 7, 2011
    Posts: 174

    MT26
    Member
    1. Virginia HAMB(ers)

    I have been thinking of getting the one offered by Dakota Digital. A little pricey though!
     
  13. AHotRod
    Joined: Jul 27, 2001
    Posts: 11,598

    AHotRod
    Member

  14. mike in tucson
    Joined: Aug 11, 2005
    Posts: 506

    mike in tucson
    Member
    from Tucson

    I have the one from Classic Instruments made by a third party. Put the unit under the package tray on a 39 coupe....works great. Calibration requires you to depress a button on the sender/antenna unit while you watch speedo...so you have to have a plan to calibrate it...single person cal is much easier than two people because of reaction time. Unit is MUCH better than the cell phone apps....most of them suck when you compare them to a real GPS reading (like an Escort Radar detector speed indicator). The GPS speedo really helps since you dont have to run a cable out of the transmission. IT automatically compensates for tire changes, etc. Dont ask about tunnels, there are no radar units inside tunnels because of the safety hazard of such. My package tray is upholstered in leather and the GPS antenna is under it and it works great.

    mike
     
  15. mike in tucson
    Joined: Aug 11, 2005
    Posts: 506

    mike in tucson
    Member
    from Tucson

    Here is a source for the unit:

    http://www.c-a-i.net/Pages/skydrive1.htm

    has wiring diagrams, cal procedure, etc

    The GPS unit puts out a pulse string that is acceptable by an electronic pulse type speedometers. The GPS unit replaces the pulse generator....so there is NOT a location coordinate output....no display of location, etc......only a pulse string. In calibration mode, the unit calibrates to an equvalent of 50 mph (if I remember correctly) so you hold your cal in until the speedo reads 50 mph....the only trick is to let the button up at the right time.
     
  16. kiwi1967
    Joined: Dec 1, 2011
    Posts: 130

    kiwi1967
    Member

    just picked up new auto meter guages and the compatible GPS unit from golden rodtronics here in denver,i am going to hopefully install it all in the next few weeks,i will let you know how it works out,
     
  17. FINKSTR
    Joined: Oct 8, 2006
    Posts: 300

    FINKSTR
    Member

    I'm thinking about getting one to signal my Classic Instruments speedo because I plan on using my quick change rear and don't want to have to reclaibrate the speedo every time I do.
     
  18. dirty old man
    Joined: Feb 2, 2008
    Posts: 8,912

    dirty old man
    Member Emeritus

    I've got a Speedhut in my not quite completed '31 "A" roadster. Still a bit unsure how I'm gonna mount the antenna so that it will pick up the satellite and still be outta the weather if I get caught out in the rain.
    Thinking of a black plastic box (the car's black)) mounted someplace behind and between the bucket seats.
     
  19. Got mine from Classic Instruments. It works great and I really like the fact that it will compensate for tire/gear changes.
     
  20. mj40's
    Joined: Dec 11, 2008
    Posts: 3,302

    mj40's
    Member

    A lot easier to set up a correction when changing gears or tire size. Just my experience.
     
  21. Dave Mc
    Joined: Mar 8, 2011
    Posts: 2,235

    Dave Mc
    Member

    I just installed " SPEEDHUT " Guages with 2 5/8" GPS Speedo in my 29 Pickup, mounted the eye under the dashrail on the lower lip of the Windshield frame,the eye is looking out the windshield and I am more than pleased with the performance,the GPS Eye is very small=easily concealed
     

    Attached Files:

  22. dirty old man
    Joined: Feb 2, 2008
    Posts: 8,912

    dirty old man
    Member Emeritus

    Dave Mc, Iappreciate your input on sensor location, and the pic, but even opening up the pic to max, I'm still unsure of where it is located. Can you give me a hint or two?
     
  23. Dave Mc
    Joined: Mar 8, 2011
    Posts: 2,235

    Dave Mc
    Member


    3 pic's of the GPS Eye Hard to see in the 1st pic,the Lower Lip of the windshield frame tucks under the dash Rail and hides it pretty well,still works like a Champ. 1st pic = Taken from outside
    2nd pic = taken w/Windshield Closed and pencil pointing it out...............3rd pic from inside w/ Windshield open......The GPS Eye (sensor ) is Magnetic and will stick on any steel surface
     

    Attached Files:

    Last edited: Feb 13, 2013
  24. I'm runnin' a SpeedHut GPS driven speedo with no problems-

    [​IMG]

    Here's the pick up antennea thingy stuck to the speaker/defroster grille:

    [​IMG]

    Tells ya' time, direction of travel, alttitude, 0-60 time n' distance, 1/4 mile time, top speed recall and it's gotta' odometer, too.

    More info here:

    http://www.jalopyjournal.com/forum/showthread.php?t=708609
     
  25. Dave Mc
    Joined: Mar 8, 2011
    Posts: 2,235

    Dave Mc
    Member


    My 2 5/8" Small GPS Speedo doe'snt have any of those options just gives accurate speed, the 3 3/8" unit has all those features, My 29 Dash insert is not big enough to squeeze the larger unit in.
     
  26. pride63
    Joined: Apr 5, 2012
    Posts: 252

    pride63
    Member

  27. Gearhead Graphics
    Joined: Oct 4, 2008
    Posts: 3,852

    Gearhead Graphics
    Member
    from Denver Co

    Cool, good to hear that everyone seems to like them. I went ahead and ordered my gauge set from speedway today. next paycheck is going to jegs for some fuel fittings and now the gps sending unit. A lot of work to get rid of a speedo cable, but not having to fuss with recalibrations and such really wounds nice
     
  28. I assume it'll work great since the free ap I got on my iPhone is spot on to a new Hondas speedo. I don't know if they offer it in a dial type face though? Wouldn't necessarily look traditional..
     
  29. slammed
    Joined: Jun 10, 2004
    Posts: 8,151

    slammed
    Member

    The pros and cons of such a unit.
     
  30. Won't be long till they are required on all vehicles so the state will be able to mail tickets for speeding 24/7
     

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