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Black Front Rocket
I have a 2" Black Front Rocket that gets tight on entry when track slicks over. No matter how you enter for ex. on the gas or off the gas
500lf
375rf
200lr
225rr
rear bars are set to stock locations
54.6 left
53.3 rear
13lbs of bite
wheel weights
LF 647 RF 447
LR 630 RR 617
any suggestions
Last edited by mqdirtracer57; 04-11-2012 at 10:32 AM.
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Maybe try increasing the lr spring to a 225 and or raising your lr bottom rod on the chassis a hole. That should loosen entry.
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Gonna try a 450 lf and legnthen right side 4 link rods...Then I will move lower rod up on chassis in I need to free up more. Thanks guys for your help
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Increasing bar length on the right side is going to free you up all the way around the race track. If the track is slick, you could end up really tailing out on exit.
For freeing up corner entry only, I would try to raise the LR bottom bar on the chassis or try a softer LF spring. Those are the two best adjustments to make that will free corner entry and have very minimal effect on your handling from center off.
I find it interesting that your car is getting tighter on entry as the track slicks off.
Are you making drastic brake adjustments in the (not a nice word)(not a nice word)(not a nice word)(not a nice word)pit that could be overcompensating for another issue?
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interesting change in handling, not what you would expect,
your not making any changes from earlier in the night?
when you say stock locations of bars , expand on that and # of holes and year of car
my blind reaction would be to add bite
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LTR middle hole
LBR third hole up from botton
RTR top hole
RBR middle hole
05 Rocket Big Hole Four-link brackets
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sounds like pretty vanilla stuff with your 4 bars
do you turn your car with the breaks when there is grip?
something is missing here
is it tight or does it push
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Maybe left side percentage is too high?
It could be a brake issue?
When the track is tacky, I can pitch it off into the corner and not lift the throttle. When track slicks over I will trail brake getting in. The LR caliper is Floated on car,but the more aggressive I try to get in,the car shoves the front end up the race track like it never transfers weight to RF.
I have recently sent all my shocks off to have rebuilt and gone through
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I'd say its a lack of traction @ the rf due to low weight there. Move some lead,get engine to right, add bite!
Where is ballast in car?
More left weight usually makes looser in.
Bet you just slide the rf getting in when its slippy.
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I have a 45 lb piece of lead mounted vertically on the upright bar that the driveshaft loop is attached to. I also have a 25 lb piece of lead mounted to the middle the chassis on the middle bar that runs parallel to the Right Frame Rail. Engine is already moved to the right
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You don't change anything thru the night?
Panhard settings?
Adjustable shocks?
Some bite and tilt may help if the car loses its roll when the track slicks off.
604 or 602 motor..if 604 may need to be raised because of aluminum.heads.
raising ballast may help
Is car flat or does it nose over and roll up the lr?
Nothing personal, but are you heavy >200#?
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It's a 604...I weigh 165...When track slicks over I decrease compression on RF shock, add 1 pound of air to LR from 6psi to 7psi...I haven't had this car but a short time,Didn't want to get too drastic on changes. Everyone says the car is supposed to be very drivible if set up by the book. I used to drive a GRT that was a little tight when tacky and perfect when slick,but someone offered me a nice bit of money for it and I sold it to them.
Car does raise the LR easy,but the front stays flat when slick. I may need to get more wheel weight on RF?
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I have black front rocket
500lf
350rf
200lr
250rr
54.5 left
54.2 rear
38lbs of bite
ltr bottom hole
lbr 4th hole up
rtr top hole
rbr top hole
....rocketshiphttp://www.4m.net/images/smilies/cool.png
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As JedClampit said,Rocket told me to add bite to increase the RF wheel weight and soften LF spring. Thanks again for all the help from everyone
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