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Thread: Tachometer repair on '77 R100/7

  1. #1

    Tachometer repair on '77 R100/7

    I am working on a repair to the tachometer on my '77 R100/7 and I would appreciate your help. I heard a rubbing sound the other day when the bike started cold, but the sound went away after warming up. I probably should have disconnected the tach cable, but I didn't. Today the sound occurred again, and eventually the needle stopped moving and the rubbing sound got louder and began to make a rattling sound. I took apart the tach/speedo unit and I noticed that a white plastic gear on a metal rod seems to be damaged on the tachometer. I haven't been able to find this replacement part, and I was wondering if anyone here has experience replacing this. I would rather replace the plastic gear than the whole speedo/tach unit! Thanks in advance for your help.

  2. #2
    Liaison 20774's Avatar
    Join Date
    Sep 2005
    San Antonio, TX
    Welcome! Check the link in my signature line. Terry Vrla might be a good contact to see what he can do for you.
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Registered User
    Join Date
    Mar 2008
    Belton Tx
    Overseas Speedometer in Austin Tx does good work.

    91 K75RT ABS

  4. #4
    Registered User m_stock10506's Avatar
    Join Date
    Feb 2005
    Trinity, NC
    I highly recommend Terry’s work.
    Michael Stock, Trinity, NC
    R1100RT, R100, R60/6

  5. #5
    Day Dreaming ... happy wanderer's Avatar
    Join Date
    Mar 2010
    Vancouver, B.C. Canada
    Best in the West! Terry repairs our airhead instruments for reasonable rates and does great work.

    Terry Vrla
    776 se 3rd ave
    Hillsboro, Oregon 97123

    Home: (503) 421-5782
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

  6. #6
    Sir Darby Darryl Cainey's Avatar
    Join Date
    Mar 2003
    Fenwick, Ontario Canada
    Terry does excellent work and is reasonable in price!
    Ambassador Emeritus BMW MOA Ontario Canada
    Niagara Riders
    Knights of the Roundel #333
    1977 R100RS, (Retired) 1993 R100GS

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