FR-S vs. Used Sports Car Market

[ichitaka05]

Originally Posted by fatoni

i dont think there is any reason why anybody would want a flexible chassis unless you are talking about safety issues and junk like that

Can't have all the chassis been stiff. Need to have flexible area to release/damper the shocks.

[Marrk]

Originally Posted by ichitaka05

Yes, gotta be strong & certain point flexible. Subaru is in 300GT & Super GT, so I'm not too worry about their chassis been weak. Only weak chassis they made is first gen Impreza (GC sereis). They're called "watermelon" due to lack of chassis stiffness... but from GB and so on, chassis is hella strong

Good to know. Thanks.

[fatoni]

Originally Posted by ichitaka05

Can't have all the chassis been stiff. Need to have flexible area to release/damper the shocks.

care to elaborate?

[Dimman]

Originally Posted by ichitaka05

Can't have all the chassis been stiff. Need to have flexible area to release/damper the shocks.

I disagree. Chassis needs to be as stiff as possible so it doesn't interfere with the chosen spring rates (by being a random spring itself) and so the control arm mounting points don't move, interfering with the motion that the engineers try to design.

[Exage]

Originally Posted by fatoni

care to elaborate?

It's most likely the same reason why crankshafts are flexible. It will absorb accelerations better. The same strength crank that is stiff would actually be brittle and problem prone. Engine manufactures can run a flexible crank then a more expensive high strength stiff crank given the design tolerances.

I will say that the crankshafts doesn't have the same flexibility as a wet spaghetti noodle, but it is present and purposely designed into mass produced engines.

[82mm 4g63]

Stiff and flexible cranks, so many jokes so little time.

[Allch Chcar]

Originally Posted by 82mm 4g63

Stiff and flexible cranks, so many jokes so little time.

Now don't throw a rod into this convo. It's just getting good.

[tree fingers]

Originally Posted by tranzformer

I have rarely heard bad things about Subaru. Except for the small issues with WRX/STI engine. But I wouldn't worry about that with this car.

I wouldn't call ringland failure a small issue.

[tranzformer]

Originally Posted by tree fingers

I wouldn't call ringland failure a small issue.

I would since every car was not affected and many forums blow things out of proportion as those affected tend to be the vocal minority and make the loudest stink and those with no issues hardly speak up or have anything to complain about.

[Marrk]

Originally Posted by tranzformer

I would since every car was not affected and many forums blow things out of proportion as those affected tend to be the vocal minority and make the loudest stink and those with no issues hardly speak up or have anything to complain about.

Well, how serious was the issue and did Subaru make good on it, i.e., warranty it?

[tranzformer]

Originally Posted by Marrk

Well, how serious was the issue and did Subaru make good on it, i.e., warranty it?

Not sure since I never owned a WRX/STI. NASIOC would give a general idea.

[fatoni]

Originally Posted by Exage

It's most likely the same reason why crankshafts are flexible. It will absorb accelerations better. The same strength crank that is stiff would actually be brittle and problem prone. Engine manufactures can run a flexible crank then a more expensive high strength stiff crank given the design tolerances.

I will say that the crankshafts doesn't have the same flexibility as a wet spaghetti noodle, but it is present and purposely designed into mass produced engines.

they are flexible because of the nature of the steel. they dont want them flexible. they just dont want them brittle either. you cant have both as far as the materials are concerned. thats why they go through the trouble of forging things and designing structurally sound components. flex in a crankshaft is just robbing power from the motor just like flex in a chassis is adding a vague feeling to the suspension.

[Dimman]

Originally Posted by tranzformer

Not sure since I never owned a WRX/STI. NASIOC would give a general idea.

There is this:

http://forums.nasioc.com/forums/show....php?t=1695936

[Marrk]

Originally Posted by Dimman

There is this:

http://forums.nasioc.com/forums/show....php?t=1695936

That doesn't look good.