Slicks question

[sy#2921]

Re: Slicks question

you can say GLD has it days. Some nights it is like an ice skating rink and some nights it can actually hook. I have always had better luck there at GLD than at byron and also been treated better as a racer. It seems to me at byron you have to be a big dog to get any respect.

 

[Silly]

Re: Slicks question

you can say GLD has it days. Some nights it is like an ice skating rink and some nights it can actually hook. I have always had better luck there at GLD than at byron and also been treated better as a racer. It seems to me at byron you have to be a big dog to get any respect.

Very true about Byron.

41 isn't bad but when you are hitting digits itll get a little scary past the 1/8th, but for tracks around here 41 hooks by far better than any of them if you want to make that drive.

Sorry to hijack

 

[Hemi Who?]

Re: Slicks question

I'm assuming if the truck is equipped with a transbrake, you would just skip all the "hold the brakes" stuff and just bring up the boost on the transbrake and then release, correct?

 

[sy#2921]

Re: Slicks question

with a transbrake you should load the suspension first then engage the transbrake so there is no slop in the drivetrain.

 

[Hemi Who?]

Re: Slicks question

Meaning bring up the boost on the brakes and then engage the transbrake? I've never tried to engage the TB at anything other than idle... something in that equation doesn't seem comfortable.

 

[George Blake]

Re: Slicks question

Meaning bring up the boost on the brakes and then engage the transbrake? I've never tried to engage the TB at anything other than idle... something in that equation doesn't seem comfortable.

The guys that don't load the drivetrain will break something on launch. There is slack and you need to take it out. These vehicles make so much torque at such a low rpm it rediculous. Why do you think they call the transbrakes the "10 bolt killer"?
You don't need to wind the truck up off the ground. Just take the slack out of the driveline. Then let everything back down to idle, then engage the transbrake as normal. In the 80e setup I do from Rossler, you put the trans in Drive to enable the brake and then push the button(to send 12 volts) to engage the transbrake.

 

[ed hess]

Re: Slicks question

Meaning bring up the boost on the brakes and then engage the transbrake? I've never tried to engage the TB at anything other than idle... something in that equation doesn't seem comfortable.

everything i described was in a truck that did not have a transbrake.

ed

 

[Aeroking]

Re: Slicks question

I also am debating on whether to run DRs or not.

Last year on a "under"stock motor, i could hold 7psi at the line while the rears spun, and held lo 1.8 lights.

Quaker City has an inclined burnout box, and i was able to light all 4 up, fairly easily.

I would assume that stock sized 245/50/16 DRs would hook better then the ZR1 275/45/17s. would this be an accurate assumption? your dont have the side wall flex in the 17"s.


BTW, i did wheel hop the rear at the line once ( thats no fun ) felt like i was wheelin in the woods.

 

[turbodig]

Re: Slicks question

I think burnouts (and the tires that require them) are a bad idea.

The few SyTy'ers I know who do burnouts before a run, are also the same guys who seem to have the most transmission and drivetrain failures. IIRC, I witnessed Mark Larson snap his transfer case chain at the KC Nats during one of these burnouts on Dig's weld/hoosiers. He went back to Minnesota on the trailer. In my experience it would take a lot of power to spin a SyTy's tires enough to heat up the tires and clean all the water off. Any time I've tried "cleaning my tires off", it felt like I was beating the shit out of my truck and extremely harsh on the drivetrain.

Yeah, but Larson broke stuff backing out of the garage. He had a knack for that.

Precisely what happened, was the rears spun, and the fronts grabbed/spun/grabbed.
On the last grab... *bang*.

I've burned that same set of wheels/tires dozens of times, all my drivetrain parts are fine.
In fact, still the stock front propshaft.

The alternative, for me, is having the fronts "chatter" when leaving the line. That *will* kill parts eventually. This is why we kill 700r4s that last in other applications.

If you can get a good, solid hook without it, great. But once you get to a certain power level, it gets tough to make them hook.

It would be interesting to devise some sort of a damper for the driveshafts that would absorb the "ratcheting" action.

 

[Don W.]

Re: Slicks question

BTW Since starting this thread it's become quite obvious that there's 2 things going on. One; my skill level and, two, track prep. Went racing Sat and the right lane was just killing everybody with red lights. I did one launch (right lane) and the truck spun and went way sideways. Next launch (right lane) was much lighter and it hooked. RT's were terrible. Tried to bring it up a bit in the first elim round and promptly red lit.

However the truck ran 12.497 @ 106.17 so I can't complain to loud. First run under 12.50

A 2step will be next.

 

[ed hess]

Re: Slicks question

BTW Since starting this thread it's become quite obvious that there's 2 things going on. One; my skill level and, two, track prep. Went racing Sat and the right lane was just killing everybody with red lights. I did one launch (right lane) and the truck spun and went way sideways. Next launch (right lane) was much lighter and it hooked. RT's were terrible. Tried to bring it up a bit in the first elim round and promptly red lit.

However the truck ran 12.497 @ 106.17 so I can't complain to loud. First run under 12.50

A 2step will be next.

don

call me i am at the shop till 2pm eastern time 856-546-8439
ed

 

[Tooky]

Re: Slicks question

Yeah, but Larson broke stuff backing out of the garage. He had a knack for that.

Precisely what happened, was the rears spun, and the fronts grabbed/spun/grabbed.
On the last grab... *bang*.

I've burned that same set of wheels/tires dozens of times, all my drivetrain parts are fine.
In fact, still the stock front propshaft.

Hey Dig, with all due respect (and I hope it doesn't seem like I'm being a jerk) - I was under the impression your truck has less than 15,000 miles but has broken a handful of 700-R4s??

I'm just trying to make my case why I believe the evidence is strong that doing these burnouts does indeed cause premature drivetrain failure.