Welcome guest, is this your first visit? Create Account now to join.

Welcome to the Motorcycle Forum.

Register ButtonIf this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

+ Reply to Thread
Results 1 to 8 of 8
  1. #1
    Newbie
    My Bike(s)
    2005 Suzuki Boulevard
    Location
    Bassett, VA
    Posts
    3

    Drag Specialties Minitach

    I purchased a Drag Specialties Minitach for my 2005 C50 Boulevard. I had the dealer install it because I am lost in electrical wiring schematics. On the ride home, I noticed that at 70 MPH, I was indicating only 2100 RPM in fifth gear. That seemed about half of what I was expecting.

    According to Drag Specialties, I need a single fire adapter, basically three wires, two diodes, and some resistance. I was told that a bike that has one ignition coil to fire both cylinders is a dual fire and a bike that had a coil for each cylinder is a single fire...the reason I need the adapter.

    However.....a few guys with older Volusia's say they didn't need an adapter. Could the additional of fuel injection have caused Suzuki to also add another coil, one for each cylinder? I have already ordered the adapter, tach is on and reading half of actual and waiting to see if the adapter was worth the money. Any help will be appreciated.
    Last edited by BoulevardBoy; 08-30-2005 at 07:52 PM.

  2. MotorcycleForums.net is the original Motorcycle Forum! Registered Users do not see these ads. Please Register - It's Free!

  3. #2
    Hangin' On For Dear Life

    My Bike(s)
    2008 Kawasaki KLR 650
    Location
    Dallas, Texas Directly above the center of the earth.
    Posts
    11,305
    Yup it is only reading half of your rpms. I can't believe the dealer didn't know this.
    Real Men Drift on Two Wheels.

  4. #3
    Newbie
    My Bike(s)
    2005 Suzuki Boulevard
    Location
    Bassett, VA
    Posts
    3
    dr,

    Did you design that cool Suzuki rider under your post name?

  5. #4
    Hangin' On For Dear Life

    My Bike(s)
    2008 Kawasaki KLR 650
    Location
    Dallas, Texas Directly above the center of the earth.
    Posts
    11,305
    Quote Originally Posted by BoulevardBoy
    dr,

    Did you design that cool Suzuki rider under your post name?
    The logo is from the sixties I cleaned it up and stylized it a little.
    Below is the original.


    Last edited by drgibson; 08-30-2005 at 09:23 PM.
    Real Men Drift on Two Wheels.

  6. #5
    Lost but forgotten

    My Bike(s)
    2012 Ninja 1000 ABS, 2002 Bandit 1200 S, 2002 Honda XR50R, 1992 Honda CR125R
    Location
    St. Cloud, MN, USA
    Posts
    20,861
    Those things really rev that high? That's as high as my four!
    'Busa shock, Racetech forks, Holeshot stage 1 & pipe, Hella headlights, CBRXX clipons, Givi E360 & V46, Zumo 550, Pilot Road 2CTs | Symtec grip heat
    Arai Signet GTR | Joe Rocket Meteor boots, Alter Ego pants, jacket
    | Gerbings liner | Alpinestars SP-1 gloves | Hanes boxer-briefs
    Gems for motorcyclists

  7. #6
    Hangin' On For Dear Life

    My Bike(s)
    2008 Kawasaki KLR 650
    Location
    Dallas, Texas Directly above the center of the earth.
    Posts
    11,305

    Talking

    Quote Originally Posted by RowdyRed94
    Those things really rev that high? That's as high as my four!
    Hmm Your bike redlines at 4200 rpms? Man my cruiser redlines at 6000
    Real Men Drift on Two Wheels.

  8. #7
    oldtimerwrenchturner
    Guest
    what does it idle at?
    if the idle is correct then it is reading rpms ok

  9. #8
    Newbie
    My Bike(s)
    2005 Suzuki Boulevard
    Location
    Bassett, VA
    Posts
    3

    Drag Specialties Minitach

    No, the idle RPM is half, too. The tach is an 8,000 RPM tach. Running 2100 RPM at 70 MPH would put the needle nearly always in the lower quarter of the tachometer's range, if correct. And at a idle speed 1000 RPM, it would be nearly on the the bottom peg. But it's not correct.

    Several folks on another forum have had the same problem and have given up and were saving up to buy a $200 tach.

    But, a guy with a Baron's ($199) tach had the same problem. He got his to read correctly using the Drag Specialties adapter (because it was half the price of Baron's same adapter) and by adding a 33K 1/2 watt resistor with the adapter. The website called for adding one to two 10K 1/2 watt resistors for a VTX 1800. I don't know how he came up with the 33K, but he said he had a power commander and could read the RPM'S on his laptop. With the resistor he added, his tach was now reading correctly. Anybody else ran into this?


 

Ads

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Similar Threads

  1. drag bars for intruder
    By soultosoul13 in forum Cruisers
    Replies: 10
    Last Post: 09-21-2008, 11:34 AM
  2. Drag bars for M50?
    By War Eagle in forum Marauder M50 Secret Hideaway
    Replies: 4
    Last Post: 04-17-2006, 01:34 PM
  3. 1/8 drag strip
    By GSXR600_Soldier in forum Sportbikes & Sport-tourers
    Replies: 5
    Last Post: 06-10-2005, 10:49 AM
  4. Drag exhuast
    By elw38 in forum Sportbikes & Sport-tourers
    Replies: 2
    Last Post: 05-06-2004, 08:53 AM
  5. Drag bars on 650 savage
    By angler170 in forum Cruisers
    Replies: 4
    Last Post: 03-20-2004, 09:31 PM

Search tags for this page

adding resistor to drag specialties tachometer

,
drag specialties 8000 rpm tachometer wiring diagram
,
drag specialties mini tach reading only half
,

drag specialties single fire adapter

,
drag specialties single fire tach adaptor wiring
,
drag specialties tach stopped working
,

drag specialties tach wiring diagram

,

drag specialties tachometer inop

,

drag specialties tachometer not working

,

drag specialties tachometer wiring diagram

Click on a term to search for related topics.