1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Discussion Gear position Switch - FZR

Discussion in 'Yamaha 250cc In-Line 4's' started by logan anderson, Dec 22, 2017.

  1. logan anderson

    logan anderson Active Member

    Messages:
    75
    Likes Received:
    18
    Trophy Points:
    178
    Joined:
    Apr 9, 2017
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    Yamaha FZR250r 3ln1
    So I was poking around and cleaning last night when I found the neutral switch.
    Looking at how it works, it would be dead easy to make a gear position indicator which is a modification I've wanted to do for ages.

    My main question is: Does anyone know what the contact point in the image called?
    RDzbvJz.jpg
     
    • Like Like x 1
  2. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    Trophy Points:
    898
    Joined:
    Jun 18, 2016
    Gender:
    Male
    Occupation:
    Panel Beater, Spray Painter, Custom Fabricator
    Location:
    Adelaide, South Australia
    My Bike:
    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    I cleaned up mine a while ago and thought the same thing.
    Could probably just use a brass screw, countersink it a little on the inside, and secure it with a daub of silicon and a nut on the outside
    I bought one of these digital gear indicator's off ebay, show's up to 6 gear's, no neutral
    Led display is red, but i have found that the blue led's are slightly easier to see during the day in bright sunlight
    https://www.ebay.com.au/itm/1-Pc-Un...520383&hash=item3aee5450c1:g:dlwAAOSwU2VZmZHV

    This is the matching plug and gear pickup sender, it's for a 4 speed
    https://www.ebay.com.au/itm/5-Wire-...822679&hash=item4af7a32f3f:g:328AAOSwPhdVFP-~
     
  3. logan anderson

    logan anderson Active Member

    Messages:
    75
    Likes Received:
    18
    Trophy Points:
    178
    Joined:
    Apr 9, 2017
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    Yamaha FZR250r 3ln1
    Well my thoughts were the standoffs you get for motherboards,
    LFSkHrk.jpg

    I should be able to bridge the positives of a row of 6 or 7 LEDs and using the ground at on the standoffs as a means to select the lights (plus a few more bits and pieces thrown to make it all work)

    I like the ideal of using a lcd like that though, maybe when I finally put a pi in the thing
     
    • Like Like x 1
  4. gregt

    gregt Well-Known Member Premium Member

    Messages:
    320
    Likes Received:
    292
    Trophy Points:
    273
    Joined:
    Mar 26, 2016
    Gender:
    Male
    Location:
    Hororata NZ
    My Bike:
    many and varied
    While it's one of those things for which I see no use...

    Have a look at the switch mechanism from a 6 speed Suzuki - GS450, GSX250/400 etc. they'd be a fairly easy adaptation.
     
  5. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

    Messages:
    4,313
    Likes Received:
    2,383
    Trophy Points:
    898
    Joined:
    Jun 18, 2016
    Gender:
    Male
    Occupation:
    Panel Beater, Spray Painter, Custom Fabricator
    Location:
    Adelaide, South Australia
    My Bike:
    Yamaha's , 1990 FZR250R 3LN3 , 1986 XT250TS 57R , 1984 IT200L 43G, 1976 IT400C 510
    Found that the TDM850 and TDR850 look very close, a late 90's R1 look's very close too
    Some of the TDM850 are neutral switch's only though
    images?q=tbn:ANd9GcTZn12_FwpCznrFogPMKMJa9akkGVm_e-UTA4uHB2g50Ylz8wx7.jpg contacteur-point-mort-Yamaha-TDM-850-(4TX)-97986.JPG
     
  6. logan anderson

    logan anderson Active Member

    Messages:
    75
    Likes Received:
    18
    Trophy Points:
    178
    Joined:
    Apr 9, 2017
    Gender:
    Male
    Location:
    New Zealand
    My Bike:
    Yamaha FZR250r 3ln1
    haha, the ones on the fzr are the same part number on the TDM850
    The one that has all the sensors is: 4TX-82540-40-00, however megazip does not currently have any in stock and does not list any other bikes that use it.

    From the below link, it appears that it only uses 2 of those sensors so you still have to modify it quite a bit (so kinda not worth buying one) - it also includes all the info you need to make one


    http://www.tdm-yamaha.890m.com/index.php?page=GID
     

Share This Page