TCC switch & questions.....

[Bruce Plecan]

-----Original Message-----
From: Barry Tisdale <btisdale at cybersol.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, January 17, 1999 1:00 AM
Subject: Re: TCC switch & questions.....


>Please explain -

By example, in first gear the engine acclerates at a rate of 2,000 rpm
per second, in third it's like 2,000rpm per 5.
  In third there is no gear multiplication (tranny wise).
  With a 6 it's much harder on the converter than a 8.  The firing
pulsations are 120d apart instead of 90d so the converter is being
more hammered by each engine power producing event.  The
Crank is moving as a series of accleration, and deccelerations,
rather than a smooth rotation.
  The less room the is for slippage their is in a drivetrain, the more
often, things break from shock loads.  ie Huge tires, double disc
clutch, short gears, 4 cyl engine, wide ratio tranny,  heavy car, figure on
carring, spare u-joints.
  AWD, like your's places such extra loads, transfer case, visc coupling,
differential, extra driveshaft, axles, and traction from the
other tires, and you want to eliminate any slippage.  And how much does your
truck weight?.
  How many syty broken trannies have you read about?.
  It's already marginal in my book, why ask for overloading it.
  The gear spacing from 1st to 2nd in the 700R is about the most
drastic in automotive use (automatic).   But, just so the car feels
good to Joe average they did that so they could use more like
freeway flyer gears, for MPG numbers.
   Hech, you can dial the boost up, so why not do that?.  Cause first
you want to make sure all the players, can handle the new load.
Fuel pump, chip calibration, go with that change.
  Sorry to go on, but I just hate seeing broken parts...
Again, just my 02 cents
Cheers
Bruce         We're starting a new class of car, instead of Pro Stock,
                   Pro Steet, Pro Cruise, we're working on Pro Zac.  For
                   those too crazy to know when to quit.
>
>Barry
>
>At 05:01 PM 1/16/99 -0500, you wrote:
>>
>>-----Original Message-----
>>From: Barry Tisdale <btisdale at cybersol.com>
>>To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>>Date: Saturday, January 16, 1999 4:44 PM
>>Subject: Re: TCC switch & questions.....
>>
>>I see all the difference in the world, maybe a letter to B Hartman would
>>be in order
>>Bruce
>