Mini spools????

Discussion in 'Technical' started by awannabegrabber, Jun 8, 2006.

  1. awannabegrabber

    awannabegrabber Always Learning

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    OK. OK. i know that a lot of people hate talking about spools. I have searched them and i still dont understand what a spool is or does. From what it sounds like they are bad. Does it convert a one wheel wonder into a posi. Sorry
     
  2. inline6

    inline6 Member

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    a mini spool locks the rear axles together.they are used alot in dirt track racing.on street cars,they are a little hard on the rear wheels in turns,and some claim that they are a b#%ch in the rain.remember the old 3 wheelers back in the day?same effect.
     
  3. awannabegrabber

    awannabegrabber Always Learning

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    i just turned 17, but yeah. so it burns tires up like crazy. i am also guessing that a spool is hard on transmitions also?
     
  4. inline6

    inline6 Member

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    not sure on how hard it would be on the tranny,but i would guess,no more harder than without it.
     
  5. scooper77515

    scooper77515 No current projects.

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    Spool is not hard on a transmission. It just puts ALL power to both tires ALL THE TIME. Think POSITRACTION...not that wimpy "limited slip" crap. REAL posi.

    Like a JEEP!

    All a spool is is a chunk of metal that snaps onto the ends of both rear axles making them, in essence, ONE long axle. Both wheels turn at the same rate, all the time.

    (A full spool attaches to the differential gear, while a mini spool just snaps onto the ends of the axles...only difference...probably makes the full spool stronger/more powerful, but you cannot get one for an 8" Ford, as far as I know. You CAN get one for a 9" Ford...)

    Read the other thread for the arguments against a spool. Anyone with "normal" Maverick horsepower will have no problem, other than a slight increase in tire wear. I have just a little more than normal HP, maybe an extra 50-75 HP (???) and I have extra wear because when I go to the track, I do PHENOMENAL burnouts, which tends to reduce tire life. As far as daily driving...just don't do anything stupid if you have extra horsepower...like making a right turn at an intersection, during the rain or snow, and then flooring it half way through. But, most of us don't do that anyway. If you do, be prepared to change your undergarments soon thereafter...and hope you don't swing your a$$ end into an oncoming car.

    Other than that, with much more horsepower, you "might" twist and/or snap an axle.

    OK...everyone else's turn to shoot me down :D
     
  6. awannabegrabber

    awannabegrabber Always Learning

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    Ok i get it. I have posi on my 4x4 jeep before i rolled it.

    With the fish tail thing. i have that already, and its hard to predict and i also have a little more beef in the motor about the same as you. soon to be more.
     
  7. don graham

    don graham MCG State Rep

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    the other thing with a spool is that if you drag race the car and they find out you have the rear locked you have to have aftermarket axles also.like i said if they find out.:)
     
  8. scooper77515

    scooper77515 No current projects.

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    At my track, I am open about the spool (as if I can hide it when I "chirp" around the corner to the inspection station :D ). Since my car is not a 10 second car, they just let me go on. They know that my 150-200 HP is not going to snap an axle or two :rolleyes:
     
  9. Gene Fiore

    Gene Fiore Member

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    Yes Don, I agree. There is usually one sure fire way for them to find out. That is pretty much when you brake an axle...ask me how I know.
    :yikes:
     
  10. scooper77515

    scooper77515 No current projects.

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    How many HP and what RPM launch when you broke it...I bet it was way more than most of us have, and stock axles...Slicks?

    I ask because, someday, if i get up over 400 HP and 3000 stall, I will either go aftermarket axles, and/or go with a limited slip.
     
  11. Derek 5oComet

    Derek 5oComet Tire burner

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    You might want to look into building a 9'' for the car.I'm in Canada and 8" parts are rediculiously priced.Mind you i used alot of used parts in my build,but just for example,it was going to cost me around $600 just for the posi unit new because there just isn't any used 8" parts around here.I have $650 in my total 9" build and thats including new Strange axles,and a rebuilt posi.Just a thought,might be something to look into.Derek.
     
    Last edited by a moderator: Jun 9, 2006
  12. Gene Fiore

    Gene Fiore Member

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    My old drag Mav was nothing that special in terms of HP or motor. I don't really know what the HP was but I was running a 302 with a 9inch, mini spool, 5.14's and 9 inch slicks with stock 28 spline axles. Now you have to keep in mind that I had the rearend setup back when I was running 14's so I guess I really didn't think about that setup as the car became quicker. My bad! At the time I broke an axle the car was running in the mid 12's. It broke during my dry hops right after my burnout...of course it was on the final round! :mad: I guess I was lucky it didn't break coming off the line...who knows where I would have ended up!
     
  13. scooper77515

    scooper77515 No current projects.

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    Can someone tell me why the words "bet" and "stock" in my quote in Derek 5oComet's thread are highlighted as links, and link me off to some map of area codes? This is the 2nd or 3rd time i have seen this happen...is it a bug on the server? Or is it just appearing on my computer, like spyware or something is installed?

    Didn't do it in my quote using those words.... :huh:

    I edited the links out..... please check your computer for spyware.
     
    Last edited by a moderator: Jun 9, 2006
  14. scooper77515

    scooper77515 No current projects.

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    Nevermind, Stefan suggested that I run my Spy Sweeper, and prior to that, I cleaned out my Temp and Temporary Internet folders, and the links are gone. Funny thing is, I don't use Internet Explorer, but Firefox. The wife uses MSIE though, so maybe she picked up some spyware... :huh:

    Spyware SUX :mad:
     
  15. ratio411

    ratio411 Member

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    Fwiw:
    Positraction (posi)
    Limited Slip
    Traction Lock
    Are all brand names for differentials that spin one wheel all the time, but have mechanisims that allow the spinning wheel to bleed off some power to the other wheel when traction is lost on the primary wheel. Neither axle ever gets full power at any one time. Clutches are the most common way that friction is applied to the axles. This is the least effective unit and has fairly large parasitic losses at the wheels.
    To say that a spool is posi is way off. Posi comes from GMs commercial name for their limited slip units, Posi-Traction.

    A locker is a spool with a mechanisim (usually rachet) that allows differential action when need, but actually lock the axles together as one in a straight line.
    100% of engine power, no parasitic losses, to both wheels. This is what you might find in a Jeep.

    A spool is a locker without the ability to differentiate.
    Both axles locked as one all the time.
    Very hard on parts! Not intended and not safe for anything other than a straight line.

    Dave
     

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