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Old 09-27-2003, 02:05 AM   #1
JDM addict
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Talking STi titanium battery hold down bracket for light weight dry cell battery

Hi all,

I just finished with this mod, I am so proud, I like to share with you guys.

I got a Odyssey PC680 (great mod, take 17 lbs off the car). Of course the stock battery hold down bracket is way too big as the PC680 is less then 1/2 the size of the stock battery. So I decided to custom make a smaller battery hold down bracket. While I am on the subject of saving weight, might as well go all out. I got the bracket made out of some high strength grade 5 Titanium (6AL-4V) and have a STi logo cut out in the middle. Then I polished it out with some metal polish. I think it turn out perfect, what do you guys think?

3

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Last edited by JDM addict; 09-29-2003 at 02:38 PM.
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Old 09-27-2003, 02:15 AM   #2
Bwana
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sweeeet
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Old 09-27-2003, 02:34 AM   #3
AjIsDope
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Nice job!
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Old 09-27-2003, 05:19 AM   #4
Kostamojen
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Wow, you have a product there Ill take one whenever I get my lightweight battery
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Old 09-27-2003, 10:38 AM   #5
S.G.D
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sweet bracket. how much does it weight?


and a little off topic. how much do those batteries go for? and are they good for winter?

~SGD
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Old 09-27-2003, 01:43 PM   #6
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Thank you all for the compliment

Kostamojen.....haha....I realize it is a product people would buy, I should look into how much it cost to get it made. (my friend made it for me for free )

S.G.D, I didn't weight the bracket, it is too light to weight on a bathroom scale I know it is quite a bit lighter then the stock mild steel bracket, about half I say.

These batteries goes for anywhere from $70~$200, depends on the brand, where you got it from and how much the mark up is. I don't think they would be very good for winter as they don't have a lot of cold cranking Amp. Here is a very good article on everything you want to know about these batteries:

http://www.stealth316.com/2-dynabatt.htm

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Old 09-27-2003, 03:41 PM   #7
calworld
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I would buy one if you sell it
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Old 09-27-2003, 05:51 PM   #8
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Looks gr8 except for the copyright infringement.
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Old 09-27-2003, 08:27 PM   #9
Maicca
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Looks great!!

Too bad winter in coming.......

What about this?

"The high, underhood (engine bay) temperatures of the turbocharged models make it desirable to move the battery away from the engine and into the rear storage compartment."
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Old 09-27-2003, 10:47 PM   #10
LinuxGuy
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Holy crap thats a small battery.
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Old 09-27-2003, 11:00 PM   #11
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Quote:
Originally posted by LinuxGuy
Holy crap thats a small battery.

thats what i was thinking

looks really good though.

steve
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Old 09-28-2003, 01:54 AM   #12
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calworld............let me see if I can get more produce so I can sell them. I don't really know how much titanium raw material cost. I will post up if I find out anything.

Boxologist............thank you for pointing out a valid concern, but look at all the exact copied "replica" body kit, wheels, stickers, floormats.....etc from Taiwan that tons of companies sells blindly in the open market in high volume. Rota wheels is a very good example:

Rota Subzero = Racing Hart CP035

Rota Grid = Volks Racing TE37

I don't think me as a single individual putting a copyrighted logo on a bracket have anything to worry about.

Maicca...........yeah I think with the hot underhood temperature, the battery life will be effected. I guess I will find out. I don't want to spend the money to have the battery relocate yet.

SjpWrx/Steve.....I appreciate the compliment

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Last edited by JDM addict; 09-28-2003 at 03:03 PM.
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Old 09-28-2003, 03:43 PM   #13
R Diamond
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It's not like STi sells tiny battery tie-downs...

I'm interested too, except I'm worried about the weight of the posts and wingnuts. Can't those be made of titanium, too?
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Old 09-28-2003, 10:33 PM   #14
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Quote:
Originally posted by R Diamond
It's not like STi sells tiny battery tie-downs...

I'm interested too, except I'm worried about the weight of the posts and wingnuts. Can't those be made of titanium, too?
Actually you can get threaded titanium rod from mcmaster.com It is pretty expensive though.

As for the wingnuts, can't help you there.

Michael
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Old 09-29-2003, 02:25 AM   #15
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Can your battery be laid flat?
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Old 09-29-2003, 02:48 PM   #16
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Quote:
Originally posted by R Diamond
I'm interested too, except I'm worried about the weight of the posts and wingnuts. Can't those be made of titanium, too?
I was wondering about that too, I don't like those steel posts and wingnuts

Quote:
Originally posted by mlchang
Actually you can get threaded titanium rod from mcmaster.com It is pretty expensive though.

As for the wingnuts, can't help you there.

Michael
Thanks Michael!! I just look it up with McMaster-Carr, it is very expensive, $47.70 for 3 feet worth of Titanium threaded rod I should do it, I wonder how hard it is to bend the rod Titanium nut is available. One thing at a time. Since I can't afford a Mclaren F1, this is what I do to satisfy myself Do you guys know every part on the Mclaren F1 is made out of the lightest material possible? Carbon fiber chassis and body, titanium suspension, magnesium wheels and valve cover....etc. It is such a dream I guess it make sense, that car is build with an unlimited budget.

Quote:
Originally posted by dead-eye
Can your battery be laid flat?
Yes, you can mount it laying on its side. Some people mount it under the front seat. Somehow you can't mount it upside down though, I wonder why

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Old 09-29-2003, 03:26 PM   #17
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Quote:
Originally posted by JDM addict
Do you guys know every part on the Mclaren F1 is made out of the lightest material possible? Carbon fiber chassis and body, titanium suspension, magnesium wheels and valve cover....etc
The included wrench set is even made of titanium
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Old 09-29-2003, 05:02 PM   #18
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Quote:
Originally posted by RokketRide

The included wrench set is even made of titanium
I bet that wrench set cost more then my STi

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Old 09-29-2003, 06:54 PM   #19
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Hey addict, if that part was created with a CnC machine I may be able to turn out a few out of some t-606 aluminum (I think thats the designation, same stuff they use on the structural parts of planes) just send me the CAD file and I will see what I can do.

It has about the same strength and weight as the Titanium but it transfers heat a little better which may help the battery out?
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Old 09-29-2003, 07:34 PM   #20
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That's the same battery I was planning on.

I would say make the hold down out of 6061-T6 aluminum, it's cheap, readily available and just a little more than 1/2 the density of titanium. You don't need the strength of titanium for a hold down, though it is cool
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Old 09-29-2003, 10:20 PM   #21
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Quote:
Originally posted by JDM addict



Thanks Michael!! I just look it up with McMaster-Carr, it is very expensive, $47.70 for 3 feet worth of Titanium threaded rod I should do it, I wonder how hard it is to bend the rod Titanium nut is available. One thing at a time. Since I can't afford a Mclaren F1, this is what I do to satisfy myself Do you guys know every part on the Mclaren F1 is made out of the lightest material possible? Carbon fiber chassis and body, titanium suspension, magnesium wheels and valve cover....etc. It is such a dream I guess it make sense, that car is build with an unlimited budget.


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Not to mention the most insanely complex exhaust mani in inconel....dear God.

-st
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