4 vs 18 way seats
01-20-2014, 12:36 PM
#17
Rennlist Member
Yes, the seat base rack adjust does also change the height of the seat base - sort of - by tilting the back of the seat base up. If you want that seat base up, you are going to be sliding forward off the seat.
for me getting the seat base angle to something reasonable means 'all the way down'. So I sit very low in the car. this is not by choice, a higher seating position would improve visibility.
for me getting the seat base angle to something reasonable means 'all the way down'. So I sit very low in the car. this is not by choice, a higher seating position would improve visibility.
01-20-2014, 01:23 PM
#18
Former Vendor
I go about 5' 11"
I understand all about center-of-gravity height. In a racecar you want to be low. With a HANS on you can't look around much anyway, you rely on the mirrors.
But on the street I want visibility and would give up and inch or two of seat height to improve it.
I understand all about center-of-gravity height. In a racecar you want to be low. With a HANS on you can't look around much anyway, you rely on the mirrors.
But on the street I want visibility and would give up and inch or two of seat height to improve it.
01-20-2014, 01:49 PM
#19
Race Director
Yes, the seat base rack adjust does also change the height of the seat base - sort of - by tilting the back of the seat base up. If you want that seat base up, you are going to be sliding forward off the seat.
for me getting the seat base angle to something reasonable means 'all the way down'. So I sit very low in the car. this is not by choice, a higher seating position would improve visibility.
for me getting the seat base angle to something reasonable means 'all the way down'. So I sit very low in the car. this is not by choice, a higher seating position would improve visibility.
01-20-2014, 02:03 PM
#20
I'm surprised that the extra Pounds. Kilos. Tonnage. isn't the determining factor in the 18 way question. Weight would be the factor in my decision, anyway.
The weights, courtesy of great rennlister Eduardo, are reported to be:
Adaptive Sport Seats 128.0 lbs.
Regular Sport Seats 97.2 lbs.
GT2 style Sport Buckets 67.0 lbs.
CGT style Sport Buckets 45.8 lbs.
128 pounds?! For seats in a SPORTS CAR?! The list of weight lessening options, factory or aftermarket, that those seats effectively invalidate is mind boggling.
Another way to look at it is that adaptive sport seats weigh twenty pounds MORE than an ADDITIONAL, or second, tank of gas! (6.4 lbs/gallon gas x 16.9 gallon tank). That fact is amazing, to me.
Eduardo posted seat weights once in this post - https://rennlist.com/forums/991/7002...ket-seats.html
The weights, courtesy of great rennlister Eduardo, are reported to be:
Adaptive Sport Seats 128.0 lbs.
Regular Sport Seats 97.2 lbs.
GT2 style Sport Buckets 67.0 lbs.
CGT style Sport Buckets 45.8 lbs.
128 pounds?! For seats in a SPORTS CAR?! The list of weight lessening options, factory or aftermarket, that those seats effectively invalidate is mind boggling.
Another way to look at it is that adaptive sport seats weigh twenty pounds MORE than an ADDITIONAL, or second, tank of gas! (6.4 lbs/gallon gas x 16.9 gallon tank). That fact is amazing, to me.
Eduardo posted seat weights once in this post - https://rennlist.com/forums/991/7002...ket-seats.html
01-20-2014, 02:12 PM
#21
Intermediate
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Are you sure that these numbers are correct?
Am asking because Sportauto tested the Cayman S 981 with the 18-way adjustavle seats and the GT2 seats in 2 independent tests (was the identical car, same number plate etc) and the weight difference was a lot less than that!!
Actually, it was 1432kg vs 1412kg ... so only 20kg difference for 2 seats (about 50lbs)...
Am asking because Sportauto tested the Cayman S 981 with the 18-way adjustavle seats and the GT2 seats in 2 independent tests (was the identical car, same number plate etc) and the weight difference was a lot less than that!!
Actually, it was 1432kg vs 1412kg ... so only 20kg difference for 2 seats (about 50lbs)...
01-20-2014, 02:13 PM
#22
Race Director
I'm surprised that the extra Pounds. Kilos. Tonnage. isn't the determining factor in the 18 way question. Weight would be the factor in my decision, anyway.
The weights, courtesy of great rennlister Eduardo, are reported to be:
Adaptive Sport Seats 128.0 lbs.
Regular Sport Seats 97.2 lbs.
GT2 style Sport Buckets 67.0 lbs.
CGT style Sport Buckets 45.8 lbs.
128 pounds?! For seats in a SPORTS CAR?! The list of weight lessening options, factory or aftermarket, that those seats effectively invalidate is mind boggling.
Another way to look at it is that adaptive sport seats weigh twenty pounds MORE than an ADDITIONAL second tank of gas! (6.4 lbs/gallon gas x 16.9 gallon tank). That fact is amazing, to me.
Eduardo posted seat weights once in this post - https://rennlist.com/forums/991/7002...ket-seats.html
The weights, courtesy of great rennlister Eduardo, are reported to be:
Adaptive Sport Seats 128.0 lbs.
Regular Sport Seats 97.2 lbs.
GT2 style Sport Buckets 67.0 lbs.
CGT style Sport Buckets 45.8 lbs.
128 pounds?! For seats in a SPORTS CAR?! The list of weight lessening options, factory or aftermarket, that those seats effectively invalidate is mind boggling.
Another way to look at it is that adaptive sport seats weigh twenty pounds MORE than an ADDITIONAL second tank of gas! (6.4 lbs/gallon gas x 16.9 gallon tank). That fact is amazing, to me.
Eduardo posted seat weights once in this post - https://rennlist.com/forums/991/7002...ket-seats.html
The added weight was another argument (excuse?) for me to get PCCB's. With PCCB's and 18 way seats, my car is still lighter than a similar car with 4 way seats and cast iron brakes. Of course my wallet is a lot lighter too.
01-20-2014, 02:36 PM
#23
Are you sure that these numbers are correct?
Am asking because Sportauto tested the Cayman S 981 with the 18-way adjustavle seats and the GT2 seats in 2 independent tests (was the identical car, same number plate etc) and the weight difference was a lot less than that!!
Am asking because Sportauto tested the Cayman S 981 with the 18-way adjustavle seats and the GT2 seats in 2 independent tests (was the identical car, same number plate etc) and the weight difference was a lot less than that!!
Basically, no. I'm not sure of anything, really.
And you shouldn't be either.
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tomingrassia (01-09-2022)
01-20-2014, 03:07 PM
#24
Drifting
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Sure? Oh, damn. Well, I'm kinda sure of the weight of a tank of gasoline because I've got a "firmish" grip on multiplication... but even then, with possible variations in tank volume and gasoline's specific gravity and the whole crazy world of variation/theory-ladeness-of-data posited by the author Thomas Kuhn in his book The Structure of Scientific Revolutions which I read way to young in life and has since often caused me to question everything and anything at the most inappropriate times....
Basically, no. I'm not sure of anything, really.
And you shouldn't be either.
Basically, no. I'm not sure of anything, really.
And you shouldn't be either.
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tomingrassia (01-09-2022)
01-20-2014, 03:27 PM
#26
Are you sure that these numbers are correct?
Am asking because Sportauto tested the Cayman S 981 with the 18-way adjustavle seats and the GT2 seats in 2 independent tests (was the identical car, same number plate etc) and the weight difference was a lot less than that!!
Actually, it was 1432kg vs 1412kg ... so only 20kg difference for 2 seats (about 50lbs)...
Am asking because Sportauto tested the Cayman S 981 with the 18-way adjustavle seats and the GT2 seats in 2 independent tests (was the identical car, same number plate etc) and the weight difference was a lot less than that!!
Actually, it was 1432kg vs 1412kg ... so only 20kg difference for 2 seats (about 50lbs)...
01-20-2014, 03:32 PM
#27
Drifting
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Chuck, FWIW, Porsche's describes it as a height adjustment with the rake being adjusted at the same time, within a narrow range. The other stuff is right; maybe they count fore and aft as "two ways"....there are no other adjustments AFAIK other than the ones you mentioned.
The thing I like about the 18 way seats is that even though they are the same basic seat as the 4 way, the height and rake can be adjusted independently over a wider range. I can get the seat into a "butt down" configuration that kind of mimics the sport buckets, but put them more level for comfortable long distance cruising. The lumbar adjustment helps my back on long trips and the thigh extension gives my legs more support. The bolster adjustments are a minor plus.
I think the 18 way seats offer definite advantages. Like every other option, it's whether they're worth the cost. To me, they were.
The thing I like about the 18 way seats is that even though they are the same basic seat as the 4 way, the height and rake can be adjusted independently over a wider range. I can get the seat into a "butt down" configuration that kind of mimics the sport buckets, but put them more level for comfortable long distance cruising. The lumbar adjustment helps my back on long trips and the thigh extension gives my legs more support. The bolster adjustments are a minor plus.
I think the 18 way seats offer definite advantages. Like every other option, it's whether they're worth the cost. To me, they were.
01-20-2014, 04:27 PM
#28
Race Director
Well, like I said, the 18 way seats offer meaningful advantages that I find important (YMMV) so they aren't just a frill like leather covered radio ***** and such. Whether the "tax" Porsche charges for them is worth it, is up to the individual buyer's discretion.
01-20-2014, 10:15 PM
#29
Rennlist Member
Does anybody know if the there is a difference in how low you can sit in the car between the 4-way or the 18-way seats, if you set each seat to the lowest possible setting??
01-20-2014, 10:41 PM
#30
Compared to Ferrari prices for different seats ( my 458 has about 12k worth) Porsche seat options are a bargain.
