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Author Topic:   throttle push
rpm20
Dirt Freak

Total posts: 338
posted April 15, 2005 05:30 AM  
if i get a throttle push on apex and exit, do i need more lr bite or less?

zeroracing
Dirt Forum Champ
Total posts: 1875
posted April 15, 2005 06:01 AM  
if your on the gas and pushing,then less lr bite, but that will not only free it up on the gas, but tighten it up on the brake.
other ideas, would be less lr spring, little more rr bar angle, little less lr. just some ideas.

donslink1
Dirt Freak

Total posts: 318
posted April 15, 2005 06:41 AM  
sorfter RF spring will help

rpm20
Dirt Freak

Total posts: 338
posted April 15, 2005 11:10 AM  
this mostly happens on a tacky track but to lesser degree on slick and dry tracks
i was running 58% rear

dirtee1
Dirt Full Roller

Total posts: 28
posted April 15, 2005 03:44 PM  
how much left side % you running?

rpm20
Dirt Freak

Total posts: 338
posted April 18, 2005 04:59 AM  
i was at 52 with me in it and now i am at 53

Mastersbilt05
Dirt Roller

Total posts: 21
posted April 20, 2005 11:15 PM  
Is this a 4link your talking about. I assume it is. You could move the lr bottom bar up a hole. If I am thinking right it should loosen you up in the center of the corner. Maybe a little less panhard angle.

rpm20
Dirt Freak

Total posts: 338
posted April 21, 2005 05:08 AM  
yes and no.....its a z-4 rear on a dw8 car.

quote:
Originally posted by Mastersbilt05:
Is this a 4link your talking about. I assume it is. You could move the lr bottom bar up a hole. If I am thinking right it should loosen you up in the center of the corner. Maybe a little less panhard angle.


zeroracing
Dirt Forum Champ
Total posts: 1875
posted April 21, 2005 09:55 AM  
raise the panhard on the rear just a little bit will free it up in the center. other idea's are little more rr bar angle(this will loosen the car up all the time on the gas).
most the time if i have a mid corner push i just move up the panhard a little bit and it goes away. if your npt carefull moving it too much can make the car super loose.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted April 21, 2005 11:15 AM  
A little bit of trail in the RR will free it up too.

#13 mod
Dirt Full Roller

Total posts: 72
posted April 24, 2005 10:59 AM  
move your pull rod to the right about a 1/2" both at the front and rear. if a 1/2" isn't enough move it some more. what this will do is take the "pull" of the rear end off the lr and move it move to the right rear. you will have no more throttle push......

andykmod
Dirt Freak

Total posts: 351
posted April 24, 2005 08:53 PM  
Still pushin ???

rpm20
Dirt Freak

Total posts: 338
posted April 25, 2005 05:40 AM  
we tested yesterday, in oshkosh and still had a push when entering , then when on the gas it loosened some but bad rr bite.
we had a really dry track and it only got worse,
i am going to try a softer lf spring and a higher p bar and also more stagger in the rear next week. maybe she will come around some.
when i did get through the corners good, i was hard on the gas and sideways like a sprinter......not where i want to be.

quote:
Originally posted by andykmod:
Still pushin ???

[This message has been edited by rpm20 (edited April 25, 2005).]

andykmod
Dirt Freak

Total posts: 351
posted April 25, 2005 02:29 PM  
It was a dust bowl and real slick toward the end of the day but the first few sessions where pretty much like the normal race conditions. Do you know who was shootin the pictures Sunday?

rpm20
Dirt Freak

Total posts: 338
posted May 02, 2005 06:00 AM  
testing again tomorrow, things changed,

pullbar recentered (was angled left at top about 3/4")

softer (600) lf spring

less cross/ bite no bite 47 cross

stagger from 3/4 rear to 2" rear

j bar higher both ends 1.5"
(got rid of j bar hitting axle bind)

nvracer
Dirt Maniac

Total posts: 127
posted May 02, 2005 09:08 AM  
It will be looser, It will probably be extremely loose, with alot less sidebite. Since it is a play day, it gives you the opportunity to adjust.
an 1.5" change in the J-bar is a very big change.

rpm20
Dirt Freak

Total posts: 338
posted May 02, 2005 09:38 AM  
well i can always reduce the stagger or add lr bite. i also plan on trying the p bar centered below the pinion from my other post and that will be low and tight.

quote:
Originally posted by nvracer:
It will be looser, It will probably be extremely loose, with alot less sidebite. Since it is a play day, it gives you the opportunity to adjust.
an 1.5" change in the J-bar is a very big change.


rpm20
Dirt Freak

Total posts: 338
posted May 02, 2005 09:40 AM  
panhard bar is about 1" above pinion center and 3" higher on the frame.
i can lower the pinion side to buy back some side bite too.


quote:
Originally posted by nvracer:
It will be looser, It will probably be extremely loose, with alot less sidebite. Since it is a play day, it gives you the opportunity to adjust.
an 1.5" change in the J-bar is a very big change.


roushimca6
Dirt Roller

Total posts: 6
posted May 02, 2005 04:56 PM  
put more left rear bite in it this will losen the car coming in & tighten it coming off.

Kangakountry
Dirt Roller

Total posts: 14
posted May 08, 2005 04:34 AM  
Please excuse my ignorance, but I thought that adding more left rear bite would tighten the car up on entry?.....could someone please explain this to me a little more?

JT54
Dirt Maniac

Total posts: 170
posted May 08, 2005 01:57 PM  
This is a common misunderstanding.....the more left rear you have when you get out of the gass the left rear will drag the car into the corner and then the car will rotate around it.....just the oposit if the right rear sticks to hard the car wiil push going in and most likeley be loose coming off....not a very scientific explaination but I have learned allot on this forum and you will to if you follow some of these folks advice.

rpm20
Dirt Freak

Total posts: 338
posted May 12, 2005 05:09 AM  
the car worked great on our opener on tues. we went to 550 , 650 in front and coilover behind with 200 lr and coilover in front with 170 rr both on cages of our 4-z dw8 car.
it was awesome and as you said with 100lbs lr bite with driver as i got off the gas the left rear would stick and pull me through the corners, the downside was if i got out of the gas too far then it felt loose, if i got off till it turned the car then got
back on it and rolled on the gas it was a rocket in the corners and out.
i need a little more roll and may soften the rr spring or go to a panhard bar to below the center of the pinion and to the left frame rail, or maybe just lower my pinion side of the j bar 1" because as it slicked off some it lost some side bite.
but over all it was good and competitive.

quote:
Originally posted by JT54:
This is a common misunderstanding.....the more left rear you have when you get out of the gass the left rear will drag the car into the corner and then the car will rotate around it.....just the oposit if the right rear sticks to hard the car wiil push going in and most likeley be loose coming off....not a very scientific explaination but I have learned allot on this forum and you will to if you follow some of these folks advice.


rpm20
Dirt Freak

Total posts: 338
posted May 13, 2005 10:11 AM  
who need sbrakes with this, i really didnt use them.


quote:
Originally posted by JT54:
This is a common misunderstanding.....the more left rear you have when you get out of the gass the left rear will drag the car into the corner and then the car will rotate around it.....just the oposit if the right rear sticks to hard the car wiil push going in and most likeley be loose coming off....not a very scientific explaination but I have learned allot on this forum and you will to if you follow some of these folks advice.


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