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SUB-FT86 04-16-2011 04:37 PM

My rsx steering is terrific and it handles well but not all hondas follow the same suit.

Dark 04-16-2011 05:07 PM

Quote:

Originally Posted by Exage (Post 34449)
I'm sorry, but if it didn't have power steering it would be tighter than a Honda, (the Lotus Elise doesn't feature power steering and I'm sure you've heard how it handles). Perhaps you mean the power steering was over boosted.

Did you find the steering poor on a Supra, Celica, MR2, AE86? Or was it just on a new Corolla, Camry or something?

I guess he means those moving refrigerators.

iff2mastamatt 04-16-2011 06:09 PM

Quote:

Originally Posted by Exage (Post 34449)
I'm sorry, but if it didn't have power steering it would be tighter than a Honda, (the Lotus Elise doesn't feature power steering and I'm sure you've heard how it handles). Perhaps you mean the power steering was over boosted.

Did you find the steering poor on a Supra, Celica, MR2, AE86? Or was it just on a new Corolla, Camry or something?

I've never driven a Supra or AE86, only the mainstream cars (like the Camry & Corolla). I'm just hoping for great handling on the FT-86.

Exage 04-16-2011 06:37 PM

Quote:

Originally Posted by Dark (Post 34451)
I guess he means those moving refrigerators.

Correct sir!

Quote:

Originally Posted by iff2mastamatt (Post 34459)
I've never driven a Supra or AE86, only the mainstream cars (like the Camry & Corolla). I'm just hoping for great handling on the FT-86.

The (new) mainstream Toyota cars feature highly assisted power steering. Even my XRS has light steering (somewhat over boosted), and I wish it had more road feedback. It's really nice for minivans or old folks at low speeds in a parking lot but suffers feed back above said speeds.

I have yet to drive a Toyota with electrically assisted power steering so I'm going off the traits of the past two I've bought. I read reviews when Toyota first introduced it and the auto magazines preferred the old hydraulic. Perhaps they've honed it so that it's better.

If Toyota is benchmarking the FTs handling on the Porsche Cayman, I doubt the steering is going to be poor. I would be surprised if it turns out that way!

DRACHENV6 04-16-2011 07:43 PM

WINNER!
2450 lbs, lsd, 200hp

If all the speculation is true, this car is going to be a beast, but with yamaha heads, we might be limited in boosting options due to higher compression. I would be content boosting to 250whp in a 2500lb car.

old greg 04-16-2011 09:17 PM

Quote:

Originally Posted by Exage (Post 34390)
Although the 2ZZ-GE can operate at low RPM it's a slug. Idle is 1000rpm warm, it needs to be over 3000rpm for it to get up, and over 5000rpm to go.

That sounds like an engine made to do some serious breathing. I have to say, at first I thought you guys were full of crap about the "construction/materials" thing, but I stand corrected. The 2zz is an interesting little engine, it has aluminum cylinder walls and iron plated pistons. That's some outside the box thinking. I can't imagine how that would help with longevity, but it's still interesting. Honestly though, I hope the FB doesn't receive quite that level of treatment. Cast iron sleeves may be mundane but sometimes they're a very nice thing to have.


As for the electric power steering, It might be a blessing in disguise. If the power steering is massively over-boosted, it seems like an electric system would be a lot easier to modify than a traditional hydraulic one. Have any of you guys ever heard of someone undervolting the assist motor? It seems like that would be a relatively simple way to increase steering effort. And if worst comes to worst, Electric power steering means that the car comes from the factory with a manual steering rack. All you'd need to do to ditch the power steering is either fab up a new column and/or remove the motor.


Quote:

Originally Posted by Exage (Post 34465)
If Toyota is benchmarking the FTs handling on the Porsche Cayman, I doubt the steering is going to be poor. I would be surprised if it turns out that way!

Don't be so sure. Steering feel and handling are two separate things to an engineer.

Dimman 04-16-2011 09:22 PM

Quote:

Originally Posted by old greg (Post 34483)
That sounds like an engine made to do some serious breathing. I have to say, at first I thought you guys were full of crap about the "construction/materials" thing, but I stand corrected. The 2zz is an interesting little engine, it has aluminum cylinder walls and iron plated pistons. That's some outside the box thinking. I can't imagine how that would help with longevity, but it's still interesting. Honestly though, I hope the FB doesn't receive quite that level of treatment. Cast iron sleeves may be mundane but sometimes they're a very nice thing to have.


As for the electric power steering, It might be a blessing in disguise. If the power steering is massively over-boosted, it seems like an electric system would be a lot easier to modify than a traditional hydraulic one. Have any of you guys ever heard of someone undervolting the assist motor? It seems like that would be a relatively simple way to increase steering effort. And if worst comes to worst, Electric power steering means that the car comes from the factory with a manual steering rack. All you'd need to do to ditch the power steering is either fab up a new column and/or remove the motor.




Don't be so sure. Steering feel and handling are two separate things to an engineer.

Could just have a button to toggle power to the motor? Or a rheostat or something?

I would LOVE that! I power-steering deleted my Supra. It feels incredible when moving. Parking, not so much. If I had a button I could press just for some assist when parking, OMG perfection...

old greg 04-16-2011 09:45 PM

Quote:

Originally Posted by Dimman (Post 34484)
Could just have a button to toggle power to the motor? Or a rheostat or something?

I would LOVE that! I power-steering deleted my Supra. It feels incredible when moving. Parking, not so much. If I had a button I could press just for some assist when parking, OMG perfection...

With the way I think it would need to be done (Mosfets and PWM), cockpit adjustability would be very easy to incorporate. Actually, now that I think about it, fiddling with the voltage coming off of the torque sensor would be way easier. Though, if the factory mapping of input torque vs assist torque is non-linear that may or may not be ideal.

serialk11r 04-16-2011 09:52 PM

Whoa that's a really cool idea!
I wonder just how hard it is to steer an unassisted car like a Lotus...on the bright side if it's really tough, it's great exercise rofl.

Dimman 04-16-2011 10:00 PM

Quote:

Originally Posted by serialk11r (Post 34488)
Whoa that's a really cool idea!
I wonder just how hard it is to steer an unassisted car like a Lotus...on the bright side if it's really tough, it's great exercise rofl.

It's only a nuisance at very slow (parking) speeds. My Supra weighs a wee bit more than a Lotus (or two) and driving with no power steering is awesome.

All I want is a toggle. Leave it off, then press a button for parking. None of this speed-sensitive, variable assist crap...

old greg 04-16-2011 10:06 PM

Quote:

Originally Posted by Dimman (Post 34492)
All I want is a toggle. Leave it off, then press a button for parking. None of this speed-sensitive, variable assist crap...

Lol.
Depending on how you read it, that's quite an ironic statement. :)

Dimman 04-16-2011 10:10 PM

Quote:

Originally Posted by old greg (Post 34496)
Lol.
Depending on how you read it, that's quite an ironic statement. :)

Yeah. I don't want variable assist, but would love a switch that, er... varies the assist from on to off... :)

old greg 04-16-2011 10:15 PM

Quote:

Originally Posted by serialk11r (Post 34488)
Whoa that's a really cool idea!
I wonder just how hard it is to steer an unassisted car like a Lotus...on the bright side if it's really tough, it's great exercise rofl.

What Dimman said, plus:

Effort at speed depends on the weight of the car, the suspension geometry (KPI, scrub radius, trail) and the overall steering ratio (degrees at the steering wheel vs. degrees at the tires). But on a production car, it's not likely to be all that heavy.

Exage 04-16-2011 10:40 PM

Quote:

Originally Posted by old greg (Post 34483)
Don't be so sure. Steering feel and handling are two separate things to an engineer.

As I see it; the theme of the FT is handling by design. I categorized handling with steering feel because though different, they are linked in the grand scheme. Every subjective handling test I've seen from an automotive magazine the steering feel and feedback form a chunk of the subjective rating.

Now could it happen that the FT gets released with a underwhelming steering feel? It's possible. I just don't think that it's taken a back seat in the vehicles design, development, and testing.


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