Light Weight Battery for .2 GT3???
04-17-2018, 07:39 PM
#106
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I don't know either way. Reducing weight with a smaller battery = good. But if it involves having to lift the car, remove the wheels, do a coilover adjustment, then get an alignment, it starts to sound like a bigger hassle than it's worth unless you're a die-hard weekend warrior who tracks their car a lot. Otherwise, I might not even bother. Only way to really know is to go ahead and do it, and then make sure to measure the before/after ride height. And then reducing suspension travel just to get the car back down to factory height, will affect other things since all the geometry needs to work together for one's desired handling characteristics.
04-17-2018, 07:45 PM
#107
Drifting
Does it seem like a contradiction to care enough about 30 lbs. by swapping batteries, but to not care about a proper alignment, ride height, and suspension travel after doing so? If a lighter battery doesn't affect these things, great. But that link in the OP says otherwise...
04-17-2018, 07:47 PM
#108
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BTW, OP was from 2010, so car was 997 or older...
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pride355 (05-03-2021)
04-17-2018, 07:53 PM
#109
Drifting
You're right, 1/4" definitely sounds like a lot to me too. Doing the gas thing seems like a good idea though. I guess in that case, if you spec'd the larger gas tank, running a lighter battery is a good way to counteract that extra weight (and the added weight of FAL and LEDs).
04-17-2018, 08:16 PM
#110
Qbix, I'm all for the Customer having options.... but just put out good data if you are going to throw out a comment. You say the Liteblox can save 22Kg. But 22kg is 48.5 lbs.... which is actually more weight than the stock Lead/Acid Battery in 991 which is 45lbs .... not sure how your getting NEGATIVE weight from changing a Battery.
Also the battery you are recommending.... the least expensive and lightest Liteblox is only 7.5 REAL Ah that costs MORE than our RS-30 which has 30 Real Ah. But then we have the ATX12-HD-RS.... which would beat up on the Liteblox with 3 more REAL Ah, about 80 more Cranking Amps at 75% less cost and you can actually buy it NOW in the USA.... and if you didn't like it or had a warranty claim could call us and get it dealt with immediately. Liteblox, last I saw, didn't have a Distributor in the USA. Also the Bluetooth thing while cool sounding has an issue, but that is for another thread.
Also the battery you are recommending.... the least expensive and lightest Liteblox is only 7.5 REAL Ah that costs MORE than our RS-30 which has 30 Real Ah. But then we have the ATX12-HD-RS.... which would beat up on the Liteblox with 3 more REAL Ah, about 80 more Cranking Amps at 75% less cost and you can actually buy it NOW in the USA.... and if you didn't like it or had a warranty claim could call us and get it dealt with immediately. Liteblox, last I saw, didn't have a Distributor in the USA. Also the Bluetooth thing while cool sounding has an issue, but that is for another thread.
04-18-2018, 01:42 AM
#111
Rennlist Member
Thanks for the input and it appears you hit a nail on the head with all the Black requests. I just figured people would want those colors mostly but I was way off.... But BLACK has been noted, I'm sure there shouldn't be a problem at all.
I will ask tonight about the Black.... I'm sure it just as easy as any other Anodized color so there should be no issues... they just started the milling so they have time before the Anodizing process and I will inquire. I know black Anodizing can sometime turn dark purple but that is in the sun. I also like that wrinkle looking stuff but I think that is more elaborate of a process... but it no harm for me to check.
I will ask tonight about the Black.... I'm sure it just as easy as any other Anodized color so there should be no issues... they just started the milling so they have time before the Anodizing process and I will inquire. I know black Anodizing can sometime turn dark purple but that is in the sun. I also like that wrinkle looking stuff but I think that is more elaborate of a process... but it no harm for me to check.
What about just powder coating the mounts black. I don't know what the cost difference would be between the two, but I can't imagine there being much of a difference. And of course, powder coating would offer a true rich black more so than anodizing.
Thanks again.
04-18-2018, 02:18 AM
#112
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I agree. But only IF it really doesn't affect ride height. 1/4" is a big difference if that's really what the case was in the thread linked in the OP. Hell, 1/4" is a huge difference in terms of looks and wheel gap, never mind handling. And I'm not talking about corner balancing. Just height adjustment and alignment to make sure the car is back to where it was if it sits higher.
Does it seem like a contradiction to care enough about 30 lbs. by swapping batteries, but to not care about a proper alignment, ride height, and suspension travel after doing so? If a lighter battery doesn't affect these things, great. But that link in the OP says otherwise...
Does it seem like a contradiction to care enough about 30 lbs. by swapping batteries, but to not care about a proper alignment, ride height, and suspension travel after doing so? If a lighter battery doesn't affect these things, great. But that link in the OP says otherwise...
04-18-2018, 02:46 AM
#113
You can also remove the side mufflers from the rear to match the battery weight reduction. 
04-18-2018, 02:52 AM
#114
Drifting
First, the battery is not directly above the front axle, so some of the weight is taken off the rear as well. Second, the fuel tank is about the same area, and no adjustment is necessary when going from full to empty, or about 180lbs with the extended tank. Lastly, when the car goes from acceleration to braking, the weight distribution changes from about 25/75 on full throttle to about 65/35 on full brake. So almost 40% of the total car weight transfers (or about 1300lbs), and that still is not a problem for a well-designed suspension - the car handles well both on the throttle on and braking. So lighter battery should not require alignment - very far from it.
04-18-2018, 03:03 AM
#115
Rennlist Member
Isn't the front spring rate something like 256 pounds/inch? If the battery sat exactly on the front axle, then 51 pounds off would lift the front of the car 1/10 inch. I thought the GT4 battery is about 25 pounds heavier, so the front of a GT4 would rise 1/20 of an inch with the RS-30 battery. Actually my front springs are 336 pounds/inch, so make that 1/26 of an inch.
04-18-2018, 03:07 AM
#116
Drifting
Isn't the front spring rate something like 256 pounds/inch? If the battery sat exactly on the front axle, then 51 pounds off would lift the front of the car 1/10 inch. I thought the GT4 battery is about 25 pounds heavier, so the front of a GT4 would rise 1/20 of an inch with the RS-30 battery. Actually my front springs are 336 pounds/inch, so make that 1/26 of an inch.
I don't mean to derail the thread; I guess I'll find out for sure when I get a lighter battery
04-18-2018, 03:20 AM
#117
Race Director
Originally Posted by usctrojanGT3
You can also remove the side mufflers from the rear to match the battery weight reduction.
04-18-2018, 03:48 AM
#118
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Lose more weight than either PCCBs or WP, for a fraction of the price.
04-18-2018, 04:55 AM
#120
I think this Antigravity battery is a total no brainer..All gain and no pain IMO.!..Just checked out the UK site where the cost is £480 ex VAT and weighs 2.6Kg..IIRC a previous post was quoted as saying that the OEM battery weighs 45 lbs(20.4Kg) so this gives a whopping saving of 17.8Kg..
An absolute bargain compared to the previous OEM Li-ion battery which cost roughly £1500 with none of the discharge issues..
An absolute bargain compared to the previous OEM Li-ion battery which cost roughly £1500 with none of the discharge issues..