IMO computer on r80g/s

Discussion in 'Airheads' started by jtwind, Nov 28, 2004.

  1. jtwind

    jtwind Wisconsin Airhead

    Joined:
    Nov 19, 2004
    Oddometer:
    3,484
    Location:
    Madison WI
    I'm installing a IMO 100r computer on my bmw g/s. The problem at present is with the tach. It registers and reads fine at idle but when the revs are increased the display loses contrast and darkens. Any ideas. A second questions is does anyone know what the rev adaption number for a bmw twin is for this computer. Thanks.
    #1
  2. MiGSel

    MiGSel GaStronaut

    Joined:
    Jan 29, 2003
    Oddometer:
    395
    Location:
    Belgium
    I've got an IMO on my 1150, and I'm thinking about putting one on my R80G/S as well. Or moving it from the 1150 to the 80 :evil As far as I can remember it's 1. Should show quite easily if the bike is running on idle, has to be around 1000-1100 rpm.

    The displayed value gets divided by the factor you put in. So if you get 500 rpm at idle, put in 0.5, if it's 2000rpm > 2.

    Your other problem might have something to do with the voltage the alternator delivers at idle being lower. But that's just a guess. I would post the question on the TT support forum. They are very helpfull and they don't mind if you post in English.

    Could you post some pics of your setup on the R80G/S?

    Cheers,
    Michel
    #2
  3. kermit

    kermit n00b

    Joined:
    Jul 10, 2001
    Oddometer:
    5
    Location:
    San Francisco, CA, USA
    I just installed an IMO 100R300 on my '86 R80G/S. Had no problems with the whole setup. Only needed to adjust the little REV adaptor thingy after the RPM display was a bit funky after the first adjustment. I'd suggest to first disconnect the tach wire and see if you see the problems with the display. If not but they show up when the tach wire is connected make sure you have not adjusted the REV thingy too far to the right hand side.

    The REV adaption number is 1 for the airheads.

    Good luck!
    #3
  4. MiGSel

    MiGSel GaStronaut

    Joined:
    Jan 29, 2003
    Oddometer:
    395
    Location:
    Belgium
    Hi Kermit,
    Any chance of some pics?
    If they are not too big (< 1Mb total) you can send 'em to GSrijder@hotmail.com. Otherwise send me a note there and I'll give you another mail address of a big mailbox.
    Thanks in advance,
    Michel
    #4
  5. kermit

    kermit n00b

    Joined:
    Jul 10, 2001
    Oddometer:
    5
    Location:
    San Francisco, CA, USA
    I don't have any pictures yet, but will take some tomorrow and put them up here. I have the Acerbis font light and used the q-tech cockpit bracket. Have a look at this link, my cockpit is pretty much identical to this:

    Q-Tech cockpit (number 780)

    [​IMG]
    #5
  6. RoyB

    RoyB Dartmouth, Massacusetts

    Joined:
    Aug 3, 2004
    Oddometer:
    1,578
    Location:
    Dartmouth, MA
    I installed one on my MZ Bagira and had some initial set-up problems. The folks at Touratech were VERY helpful. Unit works great now and it's a real hoot to play with...........Highly recommended if you are a Gadget Geek

    [​IMG]
    #6
  7. Snowdog

    Snowdog Ruminative confabulator

    Joined:
    Oct 31, 2004
    Oddometer:
    110
    Location:
    New Hampshire
    Probably an input voltage problem. Recheck the requirement of the unit against what your bike is putting out. The bike may have a voltage regulation issue.:thumb
    #7
  8. jtwind

    jtwind Wisconsin Airhead

    Joined:
    Nov 19, 2004
    Oddometer:
    3,484
    Location:
    Madison WI
    Still haven't figured this out. Tom at Tourtech in Seattle has been helpful. I now know it isn't the tach input. It does have something to do with the voltage. The voltage is only about 13.4 volts when the unit starts to black out, so I doubt if it's too much. The only suggestion is that there is a AC component in the voltage, but I have no idea why or what to do about that. Thanks for the ideas. JT
    #8
  9. MiGSel

    MiGSel GaStronaut

    Joined:
    Jan 29, 2003
    Oddometer:
    395
    Location:
    Belgium
    Have you tried the TT support forum?

    Herbert (the boss) is the IMO guru, if anybody knows he does. And he's usually quick to respond.

    Cheers,
    Michel
    #9
  10. jtwind

    jtwind Wisconsin Airhead

    Joined:
    Nov 19, 2004
    Oddometer:
    3,484
    Location:
    Madison WI
    I've been in contact with Tourtech distributor in Seattle at least 10 times. They've been in contact with Tourtech Germany 3-4 times, so far without luck. I believe they're going to send me a replacement unit. It's worth a try but I'm not convinced the computer is the problem. JT
    #10