Screw accepted in T/D, NHRA style

T/D racers, just in case you didn't notice, screw type supercharger are now accepted in T/D class, NHRA style.
See, NHRA recent rules amendments, page 76, section 4D, Top Dragster.
Enjoy,
Charlie

 

WOW< Automatic TAD cars.

 

I asked NHRA why our clutch cars aren't allowed in T/D, and was told it's because the class was never intended for slower TADs, clutch maintenance takes longer, and to keep the costs down. Now they allow screw blowers? WTF!

 

Blowers

Don't matter, still a bracket car.

 

and you can't even run a blower starter...them big old car batterys are real safe..Dave

 

Why do you think blower starters are not allowed? I only have access to the FIA rules (NHRA-1 year) but the only mentions of onboard starters are in the Pro Mod rules. GSR 8.5 "All cars must be self-starting" applies to TAD and TF, too.

 

Wouldn't you just run an on board starter but have an external battery source . I have seen it on a couple of comp style dragsters here in new zealand they have on board starters but they have a special attachement to connect and remove the external batteries.

 

Self starting usually means just that.

 

Screw blowers

It reads on board starters/ and battery's / 2 Max. Self starting. But the PSI turn real easy. Tough spending $8500 on just the supercharger, and getting beat by a 7:20 car. Not to mention constancy, on marginal tracks. Then the recert every 2 years,etc. etc.. But it is really fun to go fast. Deeeeep pockets. Don

 

To answer the question as to why the require on board starters, In addition to any other reasons a lot of santioning bodies feel it keeps the cars moving through the lanes faster and if you stall after a burn out then you don't have to be pushed back to the starting line for a restart.

Of course I don't know when they last tried to restart a hot tight high compression motor on a set of half dead batteries

Richard Gavle

 

What's up with the new no clutches rule in T/D? We find that we can service our clutch quicker than they can repair their automatics between rounds. LOL

 

The rule should be the opposite No onboard starters allowed and turn to a 16 car field. Then you would have a class worth watching and all those other guys can go back to super comp. I ran this class a few times and was the black sheep. I had a on board starter but a plug in battery pack and they didn't like us much.

 

Would an RCD battery pack survive the shake if mounted in the chassis along with a crank mount starter like the A Fuelers? What does an RCD battery pack weigh?

 

hey Brent..not for sure of this but the rule book says limited to 2 batt. only the race pack is considered to have more than 2. and I agree with the 16 car field..make it a good show for the spectators, if it takes 15 sec. longer to start that would only be a few extra min...Dave
www.myspace.com/daveloweswr

 

T/D & Clutches

Hey Brent, why should NHRA care how long it takes to service any component of the car? If you dont make the call you are out; real tough to figure out. The "self starting" in the rule book dates from the days of push starting; same rule applies to TA/D or T/F. As far as stalling, I'm trying to remember the last time I saw an alcohol car stall after the burnout and I cant think of one but it has happened so rarely that it is not an issue. I have seen more "starter" cars do this and use up a couple of minutes trying to restart when they are flooded, and there are not many instances of that either.
Hugh bought a couple of new PSI blowers so he will be selling that PSI-D that was on the car when you drove at Mission; you should talk to him about it. For the same performance they are easier on the engine and of course there is more performance available before you start wringing it's neck.
We will see you in Phoenix in 3 weeks.
Jeff