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Two speed manual tranny???

Discussion in 'The Hokey Ass Message Board' started by Fat Hack, Dec 19, 2003.

  1. Fat Hack
    Joined: Nov 30, 2002
    Posts: 7,709

    Fat Hack
    Member
    from Detroit

    Got my 2004 Performance Bodies catalog in the mail yesterday. GREAT company...they deal mostly in stuff for roundy-round racers, but I've ordered from them before and was HIGHLY impressed with their service!

    Anyhow, I spot this Falcon two-speed manual tranny, and I get to thinking...

    Weighs only 43 pounds.
    High gear is 1:1
    Dimensions and spline count make it fit where a Muncie or T-10 would go.

    A bit pricey, but I thought it'd be pretty cool for a lightweight rod like a small block powered T-bucket or something! They also offer a light (20lbs) bellhousing with both Chevy and Ford patterns, and hydraulic throw-out bearing kits....Hmmmm....

    One thing, though...it says "An internal hydraulic applied clutch operates both low and reverse gears".

    Anyone know how such a get-up works...and if it'd be cool on the street???

    (This company also sells brake pedal/master cylinder assemblies. I may use one in the 49 Chevy...nice, neat package for under $200!)

    www.PerformanceBodies.com


     

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  2. Flatdog
    Joined: Jan 31, 2003
    Posts: 1,285

    Flatdog
    Member Emeritus

    Trans like this are used on the east coast in dirt track modifieds.They have an internal cluth in them,you can not shift them fast.Would not work for drag racing as cluch is rather small and high is 1 to1 locked up like a in and out box ,you just crash it into high.
     
  3. What's the ratio on 1st gear?

    Most sticks are around 2.20 to 2.64 for 1st.
    I would guess 1st gear on the two speed is around 1.31 to 1.50 or so.
    Granted, it would work in a light car like a T, but it would be a total drag in traffic or at the fairgrounds.
    Lotta clutch slipping going on.

    Why not run a glide if you want a 2-speed?
    And if you want to pursue the minumum there are some drag racing glides out there running one gear only.

    Be really different and run a Lenco with three speeds....
     
  4. Paul
    Joined: Aug 29, 2002
    Posts: 16,941

    Paul
    Editor

    some of the big early luxury cars had two speed transmissions,

    like the Bugati Royal with a city gear and a country gear.

    I had a muncie three speed short shaft with a bad first gear for a while and drove it using only second and third.

    it was a pain to drive, prolly woulda worked better if I had first and third.
     
  5. FencePost
    Joined: Mar 5, 2001
    Posts: 351

    FencePost
    Member

    We ran a similar transmission in our North East ProStock circle track car. It had first gear removed, leaving only 2nd and 3rd plus reverse. When you are running high 5s or low 6 gears in the rearend you don't need first and removing it just lightens the whole thing. Got ours from Speedway.

    Doug
     
  6. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    Guys used to run 3 speeds,and ignore first.
    Then they started removing first to save weight.
    Then smaller,lighter clutches.
    Now everything is custom race only.
    The small internal clutch doesn't like to slip,so the don't engage real smooth.
    And they are slow to shift.
    But they are light,and will take lots of power.
     
  7. DrJ
    Joined: Mar 3, 2001
    Posts: 9,419

    DrJ
    Member

    [ QUOTE ]
    We ran a similar transmission in our North East ProStock circle track car. It had first gear removed, leaving only 2nd and 3rd plus reverse. When you are running high 5s or low 6 gears in the rearend you don't need first and removing it just lightens the whole thing. Got ours from Speedway.

    Doug

    [/ QUOTE ]

    a lot,(most?) 3 speeds run reverse as an take off idler gear from first, no first no reverse, so how'd you do dat? [​IMG]
     
  8. Deuce Rails
    Joined: Feb 1, 2002
    Posts: 2,016

    Deuce Rails
    Member

    [ QUOTE ]
    some of the big early luxury cars had two speed transmissions,

    like the Bugati Royal with a city gear and a country gear.

    [/ QUOTE ]

    Bugatti Royales had regular three speeds. (From what I've read, anyways. I've never been offered a ride for some reason.) Duesenbergs and most other luxury cars of the 20s and 30s, too.

    You're probably thinking of Deluxe early Fords with Ruckstell rear ends. [​IMG]
     
  9. yorgatron
    Joined: Jan 25, 2002
    Posts: 4,228

    yorgatron
    Member Emeritus

    a stock falcon 3 speed doesn't weigh much more than 43 pounds,and people will give them to you if you ask nice,so what's the point? [​IMG]
     
  10. Paul
    Joined: Aug 29, 2002
    Posts: 16,941

    Paul
    Editor

    Deuce Rails,
    thanks for the correction, fuzzy memories [​IMG]

    at one time I wanted to build a poorboys version,

    I had a line on an old firetruck and could see it in my minds eye,

    but it never happened.

    would be fun to build a super rod though!



    Paul
     

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  11. gettingreasy
    Joined: Sep 21, 2002
    Posts: 817

    gettingreasy
    Member

    When I was wanting to build a FED someone(I think SJ fast)had an alum. 4 speed with only 2-3 and reverse and used a regular 11inch 10 spline clutch, just smoke the hydes when you leave like the fuelers [​IMG] .
    -Jesse
     
  12. Hay Hack- do this instead.....gut the trans of low and second gear and leave high gear----install a 12' clutch and it will be the best "performance" Dynaflow ever built! [​IMG] [​IMG] [​IMG]
     
  13. Paul
    Joined: Aug 29, 2002
    Posts: 16,941

    Paul
    Editor

    12' clutch?

    whatcha buildin' an ocean liner? [​IMG]
     
  14. Deuce Rails
    Joined: Feb 1, 2002
    Posts: 2,016

    Deuce Rails
    Member

    [ QUOTE ]
    Deuce Rails,
    thanks for the correction, fuzzy memories [​IMG]

    at one time I wanted to build a poorboys version,

    I had a line on an old firetruck and could see it in my minds eye,

    but it never happened.

    would be fun to build a super rod though!

    [/ QUOTE ]

    Isn't that the Blastolene?

    [​IMG]
     
  15. Deuce Rails
    Joined: Feb 1, 2002
    Posts: 2,016

    Deuce Rails
    Member

    It's not as elegant as your earlier pic, I'll admit. But it may indeed use a 12' clutch.
     

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