Launch question
- Thread starter Don W.
- Start date
Don W.
Stab it and steer it
Re: Launch question
FWITW I can build boost at the line if I want. Stage, neutral, brakes on hard, rev for additional vac brakes on harder, build boost, launch sideways. If I don't build boost, (boost gauge at "0.") I actually get better 60' times. HOWEVER, just had the fluid changed in the transfer case, did a test launch and it seems to launch better. Prolly wishful thinking but no racing 'till next week so I'm gonna wait and see what happens.
FWITW I can build boost at the line if I want. Stage, neutral, brakes on hard, rev for additional vac brakes on harder, build boost, launch sideways. If I don't build boost, (boost gauge at "0.") I actually get better 60' times. HOWEVER, just had the fluid changed in the transfer case, did a test launch and it seems to launch better. Prolly wishful thinking but no racing 'till next week so I'm gonna wait and see what happens.
Aeroking
e.i.
Re: Launch question
When i launch i start spinning the backs at about 5#, and i drop the brakes at about 7#, and it goes squirrely for probably 10 feet ( i assume i'm spinning all 4s, cause the front wants to drift).
BTW: Stockish truck. and i'm doing the neutral, build vacuum launching.
When i launch i start spinning the backs at about 5#, and i drop the brakes at about 7#, and it goes squirrely for probably 10 feet ( i assume i'm spinning all 4s, cause the front wants to drift).
BTW: Stockish truck. and i'm doing the neutral, build vacuum launching.
turbodig
Active member
Re: Launch question
If you toasted your viscous, changing fluid won't help a thing.
Have someone take video... that'll give you the answers you need. Put a stripe of tape on the front and the back tire, or shoe polish, so you can watch the revolutions in slow motion.
Also, if you're spinning the rears on the line, your 60-foot is already shot. Your rear suspension can't react with spinning tires. Better to launch softer than let the rears spin on the line.
With the stock Firebricks, I couldn't leave with more than 2-3 psi on the old setup (20g, stock motor). 2.x 60-foots if I did.
I could leave with 10-15 psi on the Hoosiers, if I had 'em warmed up right. 1.68 60-foots.
Any more than that, and they'd fry too.
Only takes a few rides in a GN with street radials to appreciate the traction we have...
Don W. said:
If you toasted your viscous, changing fluid won't help a thing.
Have someone take video... that'll give you the answers you need. Put a stripe of tape on the front and the back tire, or shoe polish, so you can watch the revolutions in slow motion.
Also, if you're spinning the rears on the line, your 60-foot is already shot. Your rear suspension can't react with spinning tires. Better to launch softer than let the rears spin on the line.
With the stock Firebricks, I couldn't leave with more than 2-3 psi on the old setup (20g, stock motor). 2.x 60-foots if I did.
I could leave with 10-15 psi on the Hoosiers, if I had 'em warmed up right. 1.68 60-foots.
Any more than that, and they'd fry too.
Only takes a few rides in a GN with street radials to appreciate the traction we have...
Ground Rat
New member
Re: Launch question
He wouldn't be cutting 1.7's on those tires if it was RWD only.
Like slipping or what?TYTILIDIE said:
He wouldn't be cutting 1.7's on those tires if it was RWD only.
