Nhra releases 2017 rule book amendments
 

Basically, no air shifters allowed in Stock eliminator.....

Re: Nhra releases 2017 rule book amendments
 

Ummmm, that's considered a revision?

Re: Nhra releases 2017 rule book amendments
 

Does that mean you have to hold your breath now?

Re: Nhra releases 2017 rule book amendments
 

The air shifter is not new. Maybe they decided to enforce it. There are a few out there.

Re: Nhra releases 2017 rule book amendments
 

Yes there are,.....It's better to beg for forgiveness than to ask for permission....

Re: Nhra releases 2017 rule book amendments
 

Here's a good idea..Let's not have tech at Nat'l meets..Save money.

Re: Nhra releases 2017 rule book amendments
 

when could we ever have them?????

Re: Nhra releases 2017 rule book amendments
 

Some of us could -

Pneumatic, hydraulic, electric, etc. controls and shifters in all non-computer controlled electronic fuel injected vehicles prohibited.

Added on 5/30/2017 -
The use of air assisted shift is prohibited in all Stock applications.

The word "pneumatic" is still there, so is that somehow now different from "air"?

Re: Nhra releases 2017 rule book amendments
 

I did ask for permission and got it granted I keep the letter in my glove-box. Mine is electric not air but I assume it would fall in the same category.
In my case the shifter must still be a function of the driver and is activated by a switch on my hand control.

If I get back out I will probably have to find out if my letter is still any good.

Re: Nhra releases 2017 rule book amendments
 

There were cars with them that were let go, then 1 or 2 more had them. Time to enforce the rules.

Re: Nhra releases 2017 rule book amendments
 

Shifting should be a function of the driver. No assisting devices whatsoever. The same for everybody. Just my .02

Re: Nhra releases 2017 rule book amendments
 

If you need assistance shifting a 2 or 3 speed automatic you probably shouldn't be racing. Now when is Elegal-shift going away in stock?

Re: Nhra releases 2017 rule book amendments
 

Ed,
We could never figure out how or why they ever let some automatic cars have an electronic 1-2 shift.

Re: Nhra releases 2017 rule book amendments
 

By the name automatic transmission it should not take any function of the driver or it would be a manual transmission.
A true automatic you just put it in drive and go.

Re: Nhra releases 2017 rule book amendments
 

Let's not get too carried away here. Governors in automatics were OEM items, long before TA or ratchet shifters were around.

Re: Nhra releases 2017 rule book amendments
 

Mark, since you work with automatics all the time, I have a question for you. Is there a limit as to when an automatic trans can be made to shift by itself?

Re: Nhra releases 2017 rule book amendments
 

Most governors , or auto 1-2 shifts are based on output shaft rpm . Electronic shifts are based on engine speed . The difference is on good weather days a governor shift will appear to shift at a higher rpm , due to converter slip . Electronic shifts will shift at the same rpm regardless of the weather . Might be a problem trying to dial in a car if the weather changes during eliminations .

Re: Nhra releases 2017 rule book amendments
 

I bracket raced an automatic for years and tuned the shift points with the governor.
Just put it in D ....and it worked fantastic... shifted dead on every time on target.

Re: Nhra releases 2017 rule book amendments
 

My IHRA Pure Stocker has the electronic auto and after I installed the Baumann shift kit, it automatically shifts dead on @ 5,300 every pass, every gear :)

Re: Nhra releases 2017 rule book amendments
 

Does your transmission have a governor ? When I raced Pure Stock we had to run the stock 13" converter , which was pretty tight , so there was not much slip in the converter at the shift point . Has the Pure Stock rules been changed , so it allows a loose converter ?

Re: Nhra releases 2017 rule book amendments
 

I have no problem with governors. If you can make them work then more power to ya. I know lots of guys that use them for 1-2 shift. My beef is E-shift in cars that never came with it and being used with transmissions that never came with it.

Re: Nhra releases 2017 rule book amendments
 

I agree . I think that, with all the 80's and newer cars out there, and the FI stuff, guys were bitchin' about not having it on the older stuff too. So NHRA just threw everybody a bone on that one,..but it's still not right.

Re: Nhra releases 2017 rule book amendments
 

I do not believe it has a governor.
The ECU tells the internal shift solonoids when to open/close.

All I know is that the factory ECU does a much better job of hitting the shift points than I could ever do with a ratchet shifter :D

Also....any converter allowed in PS now.

Re: Nhra releases 2017 rule book amendments
 

Have to disagree/clarify this. I chase this with newer Fords and the 6 speed auto all the time. First, they don't necessarily shift based on RPM. They can, but more often than not it is based on MPH so really output shaft speed just like the old transmissions. I can't speak to the other brands as I don't know what they use. Also consider the amount of time between the shift being commanded and finally completed. Engine RPM continues to rise, then pulls down until finally achieving zero slippage once the correct elements are fully locked providing the next gear ratio. On those good weather days when the engine accelerates quicker, you'll see more peak RPM during the shift which leads to more initial RPM in the next gear. Probably better than a governor, yes, but certainly not perfect across all conditions.