Auto-blip??

[elmn8r]

Any update as to a release on the Autoblip that will work with the 2017?

Last I talked to Andres, he was targeting December sometime to have a prototype of the new one. He was going to send it to me to test. I haven't heard from him lately.

I'll reach out to him in the next day or two and post an update here...

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[Zombo]

My understanding is it's better for the synchros. But I'm thinking that might not be true anymore in a modern transmission

This is true, being easier on the synchros, but that's where the double declutching comes in. You can effectively reduce or even eliminate the load on the synchros with proper execution. For those interested:

1) Depress clutch
2) Move shifter into neutral
3) Release clutch
4) Blip throttle
5) Depress clutch
6) Downshift
7) Blip throttle
8) Release clutch

This can be done a lot faster than shifting down 2 or 3 gears one at a time. I almost always double declutch when downshifting. To get to my house I need to downshift into 1st while traveling ~25 MPH to head up a steep curvy hill. It's extremely satisfying moving the gear lever into 1st with zero resistance. It's a driving skill I feel is worth mastering, along with heel-toe.

 

[Zitrosounds]

This is true, being easier on the synchros, but that's where the double declutching comes in. You can effectively reduce or even eliminate the load on the synchros with proper execution. For those interested:

1) Depress clutch
2) Move shifter into neutral
3) Release clutch
4) Blip throttle
5) Depress clutch
6) Downshift
7) Blip throttle
8) Release clutch

This can be done a lot faster than shifting down 2 or 3 gears one at a time. I almost always double declutch when downshifting. To get to my house I need to downshift into 1st while traveling ~25 MPH to head up a steep curvy hill. It's extremely satisfying moving the gear lever into 1st with zero resistance. It's a driving skill I feel is worth mastering, along with heel-toe.

It may be satisfying but completely unnecessary.
[ame]

 

[Zombo]

Although that video is pretty good, it is not completely accurate. At ~5:45 he makes a mistake in his description of what happens when a downshift is done in a single clutch operation. He states you throw the clutch in, blip the throttle, match the speed of the engine to the road speed, grab the lower gear and everything would be OK. Unfortunately, it doesn't work that way. Blipping the throttle with the clutch in doesn't do anything to the gearbox, it only increased the engine speed.

With a single clutch downshift, you depress the clutch, select the lower gear, where the synchros now have to speed up the intermediate shaft to match speed, then you blip the throttle to match the new gear engine speed with the road speed, and release the clutch.

Double declutch, done properly, reduces wear on the synchros, during downshifting because you are not relying on the synchros to match the speed. Completely unnecessary, I think not.

 

[Zitrosounds]

Although that video is pretty good, it is not completely accurate. At ~5:45 he makes a mistake in his description of what happens when a downshift is done in a single clutch operation. He states you throw the clutch in, blip the throttle, match the speed of the engine to the road speed, grab the lower gear and everything would be OK. Unfortunately, it doesn't work that way. Blipping the throttle with the clutch in doesn't do anything to the gearbox, it only increased the engine speed.

With a single clutch downshift, you depress the clutch, select the lower gear, where the synchros now have to speed up the intermediate shaft to match speed, then you blip the throttle to match the new gear engine speed with the road speed, and release the clutch.

Double declutch, done properly, reduces wear on the synchros, during downshifting because you are not relying on the synchros to match the speed. Completely unnecessary, I think not.

Double clutching is useful for transmissions which do not have synchronizers. It is not necessary if a car has synchronizers. LOL

[ame]

 

[HoosierDaddy]

Double clutching is useful for transmissions which do not have synchronizers. It is not necessary if a car has synchronizers. LOL

Some things can be beneficial without it being "neccesary" such as extending the life of synchros by double clutching.

Then again......

[ame]

 

[Zombo]

I like this guy's videos, I've seen several, he's very good.

Driving down the front straight at VIR at 145mph or so in 4th, maybe 5th (don't know, I gave that up many years ago - haven't done it in the GT350), I'll need to downshift to 2nd for T1. I'm not going to rely on the sychros to bring the intermediate shaft up to speed for this downshift, nor am I going to go down through each gear with a heel-toe. 5th to 2nd in the braking zone, piece of cake with a double declutch.

Try to downshift into 1st at 25 or 30mph without it. LOL back at you...

I do a lot of downshifting in the GT350, purely for the purpose of hearing the engine. I don't double declutch in these instances, only rev match. I do when braking and downshifting, or if I have to downshift into 1st or 2nd while moving at a significant speed.

 

[dron_jones]

I like this guy's videos, I've seen several, he's very good.

Driving down the front straight at VIR at 145mph or so in 4th, maybe 5th (don't know, I gave that up many years ago - haven't done it in the GT350), I'll need to downshift to 2nd for T1. I'm not going to rely on the sychros to bring the intermediate shaft up to speed for this downshift, nor am I going to go down through each gear with a heel-toe. 5th to 2nd in the braking zone, piece of cake with a double declutch.

Try to downshift into 1st at 25 or 30mph without it. LOL back at you...

I do a lot of downshifting in the GT350, purely for the purpose of hearing the engine. I don't double declutch in these instances, only rev match. I do when braking and downshifting, or if I have to downshift into 1st or 2nd while moving at a significant speed.

I don't pretend to be an expert but i will also double clutch when going down into first at any kind of speed, but i always did this because it always felt like a lot of cars didn't have 1st gear synchro? I also do this on cold mornings when Tranny fluid hasn't come up to temp, usually the second and third gear shift feel pretty clunky so i will double clutch and it seems to help. Maybe i am imagining it but thats how it seems for me.... one thing is for sure, its not hurting anything.

 

[Zombo]

I suspect most gearboxes in the last 40+ years have a 1st gear synchro. The reason why first feels so difficult is because the ratio between 1st and 2nd has the largest spread. Double declutching may increase clutch wear, but clutches are easier to replace than synchros, we used to say...

Congrats on your double declutching!

 

[Evil Minion]

I'm pretty sure it doesn't do two at once. It works when you brake and then fully depress the clutch, a second clutch in while still on the brake won't trigger it again. I'd have to try it again to be 100% certain, but I recall that being the case.

It will blip with each depress of the clutch if the brake is still engaged.

Wait, so it does or does not trigger again if you press the clutch in a second or even third time while being on the brake the whole time?

 

[stoli]

Wait, so it does or does not trigger again if you press the clutch in a second or even third time while being on the brake the whole time?

It does trigger again.

 

[firestarter2]

I like this guy's videos, I've seen several, he's very good.

Driving down the front straight at VIR at 145mph or so in 4th, maybe 5th (don't know, I gave that up many years ago - haven't done it in the GT350), I'll need to downshift to 2nd for T1. I'm not going to rely on the sychros to bring the intermediate shaft up to speed for this downshift, nor am I going to go down through each gear with a heel-toe. 5th to 2nd in the braking zone, piece of cake with a double declutch.

Try to downshift into 1st at 25 or 30mph without it. LOL back at you...

I do a lot of downshifting in the GT350, purely for the purpose of hearing the engine. I don't double declutch in these instances, only rev match. I do when braking and downshifting, or if I have to downshift into 1st or 2nd while moving at a significant speed.

Yeah my concern with the autoblip in this scenario is that youd develope some weird driving style when going down more then one gear or youd go down one gear instead of 2 to avoid the issue

 

[elmn8r]

I talked to Andres at Auto-Blip today. They are engineering a new product that will work with our 2017's and hope to have it available by the end of 2017.

That's all the detail I have on it right now. I'll let you know if I learn anything I can share...

 

[TheDoctor66]

Just gonna leave this here. Also 17 speed transmissions require double clutching.

 

[torque124]

Why would one need auto blip ? Why not blip yourself, its one of the life pleasures...

When I drove my GT350 with a friend that owns a new M5, he kept hearing the blipping, he assumed it's automatic. he was impressed when I told him it's me.

I always do it shifting down when in a rush, maybe not when driving around town slowly.

Blip away folks

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