Luso Seats Mk.3

[Petrus]

My RCC Mk.3 bucket seats are ready!
With the ´alcantara´pads just over 5 kilos each.

Modified the OEM seat mounts/rails and they are now 8 kilos in all. That is a bit heavier than I would have liked but that is the price of rigidity; like a chassis brace.

That makes the total <19 kilos.
Should save some 14 kilos.

[m1tch]

Look great! Are they side or base mount?

[househead]

They look very nice ... what's the comfort level like?

I sweat like crazy in my leather seats. Think my missus is grateful the roof is almost always down 🤣

[Ardent]

Like the look of those.
Not sure I could live with them though.

[Petrus]

Bottom mounted.

Dunno about the comfort; have not mounted them on those bottoms yet.

Should be less sweaty. Over here the top down is hótter    Today´s charming company all but demanded top up.

No need to líve with them Ardent. That´s the missuses (is that the plural?)* part. Futhermore have the other ones as backup if/when needed.

* Edit:  Found it. Rather susprisingly it is Mesdames:
´In literature Mrs may appear as missus or missis in dialogue. A variant in the works of Thomas Hardy and others is "Mis'ess", reflecting its etymology. Misses has been used but is ambiguous, as this is a commonly used plural for Miss. The plural of Mrs is from the French: Mesdames.´

[m1tch]

I had a Bride fibreglass race seat in my daily drive FC3S RX7, thought it would be fairly unconfortable, however they were fine as they were supportive enough so you don't actually move. If the seat is too large and you move around then it won't be comfy, however if they are tight against you they will be good as the lack of movement in the seat means you don't even really need much padding.

[Petrus]

Thanks for the feedback Mitch.
I find that the OEM seats in the MR have a set of issues.
The most obvious one are that although they are ergonomic enough, I sit too much on top of them. Nor do they offer any support for my legs; not under, not to the side.
I need to brace a leg and arm to door or console when connering fast.
The worst however is that I ´brace´ my upper body into the corners. That kills my back, is very tiring and is handicap steering as it is impossible not to use the steering for sóme support for that moving about.

Mind; when cruising, even moderately fast, the seats are fine.
It is that they do not support the G-forces on you which you thus need to do with your muscles and obviously against sómething.

A thing to ponder about; soft does not distribute force. Pressure is force per cm2. Hence a good horse riding saddle has good fitting, somewhat flexing, hárd panels to distribute the weight of the rider evenly over a max. large supporting surface of the back.
I have written a fairly extensive piece on that and it seesm impossible to grasp for most riders. It seems hard to understand that soft does not distribute force.

Right, time to get some work done....

[m1tch]

I was looking at some of those Kirkey aluminium seats for mine, 5.7kg each and only run the drivers seat, the passenger seat weighs 13.9kg with the driver seat I am guessing slightly heavier, say 14.9kg, so fitting just a Kirkey driver seat would save 23.1kg in weigh - or around 0.2 seconds at the drag strip.

I will be publishing my full list of weights for anything I have at some point removed from the car, currently adding trim back in, but will be looking at a few seat options soon.

Tempted to run stock seats/Celica seats on the road, then run a single very light race seat for the driver side when needed as to remove the seats its only 4 bolts and a connector.

[Petrus]

I was looking at some of those Kirkey aluminium seats for mine, 5.7kg each and only run the drivers seat, the passenger seat weighs 13.9kg with the driver seat I am guessing slightly heavier, say 14.9kg, so fitting just a Kirkey driver seat would save 23.1kg in weigh - or around 0.2 seconds at the drag strip.

I will be publishing my full list of weights for anything I have at some point removed from the car, currently adding trim back in, but will be looking at a few seat options soon.

Tempted to run stock seats/Celica seats on the road, then run a single very light race seat for the driver side when needed as to remove the seats its only 4 bolts and a connector.

The latter is partly why I chose the OEM mounts/runners.

Looked at aluminium buckets too. The Kirkeys in my book came second to UK made Porsche Spyder replica aluminium ´bomber´ ones. I think I put photos in Belle´s own thread
Weight wise these alloy buckets offer no advantage and they NEED padding. They look só cool though!







About the weight; don´t calculate yourself light. Even if you would go for fixed position mounts, you still need them less flimsy, but ok let´s think positive with 2 kg.
The way I calculated it, an alloy bucket with insert and fixed mount adds op; 5,7 + 2 + 2  = 9.7 kilos.
The OEM based slider I wanted would come at 11.7 kilos so ... went for ergonomic fiber. Was a difficult  decision though: Imo the aluminium ones look wáy cooler than everything else by a huge distance and still have that regret thought itching at the back of my mind. 

For your sprint event only seats I would go for the 2,7 kg (seller´s claim)  UK bomber seat and the flimsiests of mounts = say 3,5 kg.   :-)


Looking forward to your weight list!
Also to you putting it on a weighbridge/scales.
Next time I put it on, will try a front/rear weighting too.

[H1GRM]

I was looking at some of those Kirkey aluminium seats for mine, 5.7kg each and only run the drivers seat, the passenger seat weighs 13.9kg with the driver seat I am guessing slightly heavier, say 14.9kg, so fitting just a Kirkey driver seat would save 23.1kg in weigh - or around 0.2 seconds at the drag strip.

I will be publishing my full list of weights for anything I have at some point removed from the car, currently adding trim back in, but will be looking at a few seat options soon.

Tempted to run stock seats/Celica seats on the road, then run a single very light race seat for the driver side when needed as to remove the seats its only 4 bolts and a connector.

The latter is partly why I chose the OEM mounts/runners.

Looked at aluminium buckets too. The Kirkeys in my book came second to UK made Porsche Spyder replica aluminium ´bomber´ ones. I think I put photos in Belle´s own thread
Weight wise these alloy buckets offer no advantage and they NEED padding. They look só cool though!







About the weight; don´t calculate yourself light. Even if you would go for fixed position mounts, you still need them less flimsy, but ok let´s think positive with 2 kg.
The way I calculated it, an alloy bucket with insert and fixed mount adds op; 5,7 + 2 + 2  = 9.7 kilos.
The OEM based slider I wanted would come at 11.7 kilos so ... went for ergonomic fiber. Was a difficult  decision though: Imo the aluminium ones look wáy cooler than everything else by a huge distance and still have that regret thought itching at the back of my mind. 

For your sprint event only seats I would go for the 4,5 kg UK bomber seat and the flimsiests of mounts = 5,5 kg.   :-)

Again, the Toyota guys did a good job with quite light seats.

Looking forward to your weight list!
Also to you putting it on a weighbridge/scales.
Next time I put it on, will try a front/rear weighting too.

If weight reduction is key how about a bit of dieting.... 

Just an idea.

[Petrus]

If weight reduction is key how about a bit of dieting.... 

Just an idea.

Tell M1tch...

Just an idea.

[Petrus]

Bugger   
Should not have looked at the aluminium bomber seats.
A heavy weighing reason not to go this route was the charming passenger(s) veto(s).
With retrospect could have gone M1tch´s option in reverse and bolt the OEM in for two-up use; for the rest drive with the 5,5 kilo solution.
Ah well, luxury ´problem´.

[m1tch]

I was looking at some of those Kirkey aluminium seats for mine, 5.7kg each and only run the drivers seat, the passenger seat weighs 13.9kg with the driver seat I am guessing slightly heavier, say 14.9kg, so fitting just a Kirkey driver seat would save 23.1kg in weigh - or around 0.2 seconds at the drag strip.

I will be publishing my full list of weights for anything I have at some point removed from the car, currently adding trim back in, but will be looking at a few seat options soon.

Tempted to run stock seats/Celica seats on the road, then run a single very light race seat for the driver side when needed as to remove the seats its only 4 bolts and a connector.

The latter is partly why I chose the OEM mounts/runners.

Looked at aluminium buckets too. The Kirkeys in my book came second to UK made Porsche Spyder replica aluminium ´bomber´ ones. I think I put photos in Belle´s own thread
Weight wise these alloy buckets offer no advantage and they NEED padding. They look só cool though!







About the weight; don´t calculate yourself light. Even if you would go for fixed position mounts, you still need them less flimsy, but ok let´s think positive with 2 kg.
The way I calculated it, an alloy bucket with insert and fixed mount adds op; 5,7 + 2 + 2  = 9.7 kilos.
The OEM based slider I wanted would come at 11.7 kilos so ... went for ergonomic fiber. Was a difficult  decision though: Imo the aluminium ones look wáy cooler than everything else by a huge distance and still have that regret thought itching at the back of my mind. 

For your sprint event only seats I would go for the 4,5 kg UK bomber seat and the flimsiests of mounts = 5,5 kg.   :-)

Again, the Toyota guys did a good job with quite light seats.

Looking forward to your weight list!
Also to you putting it on a weighbridge/scales.
Next time I put it on, will try a front/rear weighting too.

If weight reduction is key how about a bit of dieting.... 

Just an idea.

I am also factoring in driver weight as well with my weight reduction testing - my ideal would be to take out as much weight as the driver so the lighter I am, the less weight I need to pull out lol

[tatieu]

Great mods !