F1 shifts= nose dive?

Hello all,

Been more of a lurker here but am destined to own a 430 one day. Over the wkd I had the opportunity to test drive a 2005 with @15k miles that was taken in on trade. Car is gorgeous as one would assume and had those MASSIVE CC brakes which I love.

On the test drive I was able to open the car up a bit and see how it felt. I was very surprised to get a sense of heave nose dive during WOT shifts(F1 trans). Is this common? This was in the "race" setting and shifting around 7500rpm while never lifting off the throttle.

I've not driven a F1 430 prior and was very confused as to why shifts would feel like this. It seemed as if the car was coming off throttle(even though my foot never lifted off the throttle) then the shift would happen and the throttle would re-engage. The car pulled great until the shift points.

Is this the norm?

 

It isn't a nose dive. When full on throttle the nose is actually lifted some from acceleration. When you shift it comes off throttle, depresses the clutch, shifts , then engage the clutch. So yes, you loose the nose lift that was there until the clutch engages again. That is completely normal.

Remember that it is a 6 speed gearbox, only the shifting is controlled by a computer. When you drive a manual car you go through the same process and have the same effect. It just takes you longer to shift.

 

And this can be easily remedied by having a triple espresso...

 

Yes, I feel the same thing in my 05 It feels as through the traction control takes over. It seem less when going through higher gear changes.

 

Seriously, I thought it was because the computer cuts the flow of fuel during the shifts, but I have not confirmed this. I also have a suspicion that the Scuderia does NOT cut the fuel between shifts.

 

Easy remedy just go manual

 

My CS sure doesn't behave that way but that's not a fair comparison. My first suggestion is try the same thing in one or two others to make sure you are not dealing with an issue specific to that car.

 

Not a factor on a scud because it shifts at .60 mili secs...

 

See, that's exactly what I was thinking. It shifts SO FAST that cutting the fuel at that speed would probably disrupt the performance. It sounds like a gun going off when the car shifts. The Scud (and CART and F1 race cars) are the only cars I've ever heard that make that noise.

 

The shift time is no less than 150 milliseconds. Even though you are still stuffing the pedal into the carpet - the engine control is still lifting on the throttle so that mechanical gear-changes can continue. With all due respect - This is not a video game. It is a mechanical piece & needs to have load off for that small time to help the shifts.

Well said = fully understood.

Pretty sure it does drone. Just quicker (60 milliseconds).

There is always one in every crowd...

I think its just the way the OP is describing things. The CS shifts very much like a F430 F1.

Correct. Its pretty damn fast & feels almost linear. A l m o s t ... A 458 actually is.

Nah - even the AMG C63 makes those same noises. I have a video of it around here from me driving one at the track.

 

The Scud (and CART and F1 race cars) are the only cars I've ever heard that make that noise.

 

Ahhh Mike you need to get out more.

I just reviewed my video of the C63 (taken with an iPhone) and its just not picking up the sounds worth a hoot. Its a good enuf vid, but just cabin sound level.

Nevertheless. I can assure you that it makes all the right noises and is right there with your other choices. There are lots of flavors. Try 'em all.

 

My CS Does this nosedive in standard mode, its awful, put it in race mode and the shift is superfast and the problem is eliminated, however, in race you have to consider that you are likely causing inner ear damage to the public.

My friends 430 gearchange is horribly slow and nosedives in standard or race, so im gonna say it, the 360CS is a much better car than a standard F1 430 - there I said it....

 

The F430 nose dives a bit in sport and not as much in Race. Cst off even better. 360CS was the same to me. Only difference was car was noticeably slower when I drove it plus a lot slower when I slaughtered my friend's CS from a 20 mph roll. I even gave him the jump. Easily passed him by 2nd gear. Two times and same results twice. There I said it.

 

All the dry plate clutch F1 systems lift the throttle on upshifts to unload the gearbox and make for faster, smoother shifts. At 60 ms on a Scuderia/16M/GTO, however, it happens so quickly you barely feel it. There is still a necessity to match revs on upshifts, just like there is on downshifts, and the drivetrain absorbs the difference.