New battery, worse handling - Page 5 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

guybo · 06-29-2017, 03:15 PM

And that weight is not forward. That extra weight is dead over the COG. Yes it's higher than the COG but it is on the horizontal COG and though it does have a vertical moment arm of inertia and, it could in theory cause more roll it won't affect turn in. That's why the battery weight is less important on this car than many other weights with greater moments of inertia.

radroach · 06-29-2017, 03:43 PM

@Poodles the only place I could find the AGM battery weight spec was on autozone's website, I'm going to give it a +/- margin of error.

Tcoat · 06-29-2017, 03:48 PM

Quote:

Originally Posted by radroach

@Poodles the only place I could find the AGM battery weight spec was on autozone's website, I'm going to give it a +/- margin of error.

Ok then it can be either 15 pounds more or 5 pounds more. Neither makes the difference you state.

Scrappydoo · 06-29-2017, 05:04 PM

I think we should just settle on the fact that this is exactly the same problem that no-one else has ever had.

And just leave it at that.

burningjello · 06-29-2017, 05:22 PM

Well that was an interesting read.

JD001 · 06-29-2017, 05:23 PM

Quote:

Originally Posted by Scrappydoo

I think we should just settle on the fact that this is exactly the same problem that no-one else has ever had.

And just leave it at that.

I think this thread has highlighted the need for a 'Car battery vs weight' schedule.. Just imagine it? It will be a success with electrically charged information showing battery types, weights, sizes and spring/damper tuning rates per battery type!! Mind just boggles!

humfrz · 06-29-2017, 06:10 PM

Quote:

Originally Posted by burningjello

Well that was an interesting read.

Maybe the odors from the "Tacoma aroma" got to your brain as a child ......

humfrz

Poodles · 06-29-2017, 06:11 PM

Quote:

Originally Posted by radroach

@Poodles the only place I could find the AGM battery weight spec was on autozone's website, I'm going to give it a +/- margin of error.

I literally just put that exact battery in my car less than a week ago. The weight difference was small. AGM's are always heavier for the same size, but the 35 AGM is shorter than the factory battery (and other 35's) and uses a height adapter. Because of this, the weight difference is very small between a normal 35 and the AGM 35. The factory battery is quite frankly a low duty battery with less lead and thus lighter.

Again, it was placebo as YOU thought it was heavier so YOU thought you would find a change in the way it handles. Much like the crap about light weight crank pulleys and driveshafts...

burningjello · 06-29-2017, 06:40 PM

Quote:

Originally Posted by humfrz

Maybe the odors from the "Tacoma aroma" got to your brain as a child ......

humfrz

Hahaha shhh, we're trying to not scare people off from visiting Tacoma.

Scrappydoo · 06-29-2017, 08:52 PM

I've been experimenting with fine tuning the chassis by removing pages from the owners manual.

Top tip - even page numbers.

Ultramaroon · 06-29-2017, 09:37 PM

C'mon, guys. He noticed the difference.

Y'all are just jealous of our high-precision butt dynos.

Dejecteddevil · 06-29-2017, 10:00 PM

Lol wow , so this is the first post i saw im new to this whole forum thing but i have a 2017 gt86 and was wondering where i would post on a diy self cosco rep trans mount stiffner i made.

Sent from my LGMS550 using Tapatalk

guybo · 06-29-2017, 10:21 PM

Quote:

Originally Posted by Dejecteddevil

Lol wow , so this is the first post i saw im new to this whole forum thing but i have a 2017 gt86 and was wondering where i would post on a diy self cosco rep trans mount stiffner i made.

Sent from my LGMS550 using Tapatalk

Sounds heavy.

humfrz · 06-29-2017, 10:30 PM

Quote:

Originally Posted by Scrappydoo

I've been experimenting with fine tuning the chassis by removing pages from the owners manual.

Top tip - even page numbers.

Please be specific ....... some pages are heavier than others .......

humfrz

06-29-2017, 09:37 PM	#67
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,396 Thanks: 53,053 Thanked 37,225 Times in 19,308 Posts Mentioned: 1117 Post(s) Tagged: 9 Thread(s)	C'mon, guys. He noticed the difference. Y'all are just jealous of our high-precision butt dynos. __________________ service manuals

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06-29-2017, 03:15 PM	#57
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	And that weight is not forward. That extra weight is dead over the COG. Yes it's higher than the COG but it is on the horizontal COG and though it does have a vertical moment arm of inertia and, it could in theory cause more roll it won't affect turn in. That's why the battery weight is less important on this car than many other weights with greater moments of inertia.

06-29-2017, 03:43 PM	#58
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	@Poodles the only place I could find the AGM battery weight spec was on autozone's website, I'm going to give it a +/- margin of error.

06-29-2017, 05:04 PM	#60
Scrappydoo Senior Member Join Date: Oct 2016 Drives: Grrrr Location: The Motherland (not France) Posts: 599 Thanks: 330 Thanked 378 Times in 231 Posts Mentioned: 14 Post(s) Tagged: 0 Thread(s)	I think we should just settle on the fact that this is exactly the same problem that no-one else has ever had. And just leave it at that.

06-29-2017, 05:22 PM	#61
burningjello Senior Member Join Date: Mar 2016 Drives: 2016 FR-S Location: Tacoma WA Posts: 148 Thanks: 186 Thanked 53 Times in 36 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Well that was an interesting read.

06-29-2017, 08:52 PM	#66
Scrappydoo Senior Member Join Date: Oct 2016 Drives: Grrrr Location: The Motherland (not France) Posts: 599 Thanks: 330 Thanked 378 Times in 231 Posts Mentioned: 14 Post(s) Tagged: 0 Thread(s)	I've been experimenting with fine tuning the chassis by removing pages from the owners manual. Top tip - even page numbers.

06-29-2017, 10:00 PM	#68
Dejecteddevil Junior Member Join Date: Jun 2017 Drives: 2017 gt86 Location: Florida Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Lol wow , so this is the first post i saw im new to this whole forum thing but i have a 2017 gt86 and was wondering where i would post on a diy self cosco rep trans mount stiffner i made. Sent from my LGMS550 using Tapatalk

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