NEED MORE GEARS

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NEED MORE GEARS

Post  powerstrokeace on June 23rd 2014, 12:32 pm

GUY'S I HAVE BEEN THINKING THAT WE NEED TO SWITCH FROM 4:11 TO MAYBE 4:33. WE ONLY CROSS THE FINISH LINE JUST AT 6900RPMS.

ACE
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Re: NEED MORE GEARS

Post  Larry Williams on June 23rd 2014, 2:18 pm

this is something I copied off this board a few years ago.

if your unsure about your gear ratio, take your et x's your mph = ?

if your answer is less than 1335 you need a lower gear ratio

if your answer is more than 1335 , you need a higher gear ratio


if your answer is with in 10- 15 its close enough unless you need every bit of et
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Re: NEED MORE GEARS

Post  D. Sea on June 23rd 2014, 3:19 pm

1345 for me, I'm good  Cool 
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Re: NEED MORE GEARS

Post  cool40 on June 23rd 2014, 4:13 pm

That dont figure for me.... Suspect 
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Re: NEED MORE GEARS

Post  dfree383 on June 23rd 2014, 4:14 pm

cool40 wrote:That dont figure for me.... Suspect 

That's because you're special...... sunny 
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Re: NEED MORE GEARS

Post  IDT-572 on June 23rd 2014, 4:51 pm

685  scratch 
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Re: NEED MORE GEARS

Post  dfree383 on June 23rd 2014, 5:17 pm

IDT-572 wrote:685  scratch 

Needs more cow bell.....
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Re: NEED MORE GEARS

Post  IDT-572 on June 23rd 2014, 5:19 pm

Dang if my gear is off that much, tha Fabiol is in biiiiig trouble. Lol
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Re: NEED MORE GEARS

Post  rmcomprandy on June 23rd 2014, 5:25 pm

It is only meant to get close and work with 1/4 mile times, guys.

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Re: NEED MORE GEARS

Post  cool40 on June 23rd 2014, 6:04 pm

rmcomprandy wrote:It is only meant to get close and work with 1/4 mile times, guys.
so we need to x2 for 1/8 mile? I'm at 1410 that way...
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Re: NEED MORE GEARS

Post  rmcomprandy on June 23rd 2014, 7:10 pm

cool40 wrote:
rmcomprandy wrote:It is only meant to get close and work with 1/4 mile times, guys.
so we need to x2 for 1/8 mile? I'm at 1410 that way...

The curve from 1/4 mile to 1/8 mile is NOT linear so x2 won't be right. The second eighth mile you would not be starting at a standing start and low speed compared to high speed acceleration is not near the same.

EDIT: Six seconds in the 1/8 is not hear twelve seconds in a 1/4 mile and 100 MPH 1/8 mile won't be near 200 MPH in a 1/4 mile, either.

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Re: NEED MORE GEARS

Post  JACKAZZFLATZ on June 24th 2014, 9:51 am

WHOA, 1331.7 for me. Good guessing ..... I guess.
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Re: NEED MORE GEARS

Post  IDT-572 on June 24th 2014, 2:11 pm

1326
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Re: NEED MORE GEARS

Post  dfree383 on June 24th 2014, 2:41 pm

Sufficient cow bell....... Basketball 
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Re: NEED MORE GEARS

Post  whatbumper on June 24th 2014, 3:29 pm



LOL

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Re: NEED MORE GEARS

Post  IDT-572 on June 24th 2014, 3:47 pm

I have 200 hp worth of Steve's cowbell on it now. Just need to get to the track to dial it in. Last time I tried it was at the US 43 race.  Rolling Eyes 
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Re: NEED MORE GEARS

Post  KY JELLY on June 24th 2014, 4:11 pm

Did it not hook lol.
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Re: NEED MORE GEARS

Post  powerstrokeace on June 25th 2014, 12:22 am

ok just looked at the best runs and this is what i came up with using this math. 1332.483 for the 557 hard tail car and 1339.65 for the 555 4 link car. guess i'll stick with the 4:11 for now. would like to try a 4:33 gear just for grins


Ace
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Re: NEED MORE GEARS

Post  KY JELLY on June 25th 2014, 12:39 am

I have changed back and forth from 4:30 to 4:86 gears with a 105 circ with several different engines and converters. Every time the 4:86 has been quicker and finish line rpm changes very little . The lower gear doesn't  slip the converter as much .
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