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Author Topic:   Handling ?
hobby39
Dirt Maniac

Total posts: 112
posted July 18, 2004 04:35 PM  
Friday night i went to the track and like usual I pushed really bad when it went dry. Saturday I went to the track for a drivers school a couple of the experienced drivers were putting on and it turned into more of a test and tune day. The track was wattered in the morning but after 3 hours in the NM sun it was slicker then it was the night before and here's what we came up with it's a hobby stock but more like a purestock from reading here. 1 1/2" stagger in the front and rear rf 18# rr 18# lr 14# and lf 24#. the car felt the best it has all year. I could drive it right through the corners no problems. Here's the problem everyone at the track that got me running better says my camber is way off the rf tires is straignt not leaning in at the top. My sponsor and best friend who has been helping me for the last couple years says that if i fix the camber then put the pressures back to rf 19# rr 16# LR 14# and rf 16# he really dosen't like the high pressure in the lf and would have no idea what to do on a wet track. I'm tempted to leave the camber alone and just run it but think i'll be better off if i fix it. any ideas? right now my plan is to fix the camber run rf 18# rr 16# lr 14# and lf 20# and set it up the way we had it at the end of the practice for dry slick. sorry so long i was happy with the way it handled for the first time now I'm frustrated.

racer17j
Dirt Forum Champ
Total posts: 5390
posted July 18, 2004 05:03 PM  
I understand that you only change one thing at a time. However this is what I'm being told. My car was mistakenly set up by the local frame shop that does a lot of race car set ups as a street car not as a race car camber was set up at -.5 on both sides. last night we set it up as LF +.75 caster and camber and RF -3.25 caster and camber. I was told if i leave the tire pressures the way it ran good in the dryslick before correcting the caster and camber it will not handle now because the higher LF 24 to rf 18 was a crutch because the caster and camber off now that it's corrected the RF needs to have higher pressure then the LF. what do you guys think. Thanks for the help.

19J
Dirt Freak

Total posts: 370
posted July 20, 2004 07:47 AM  
Remember all cars are not the same. If your car was good then leave it alone and race it first. Then if it still isnt right then change it.But if you liked it dont go changing something just cuz someone says oh i do this way. Like in NASCAR you cant setup 2 cars the same. Even if it is something small like that. Just run it then tune.

waltonjr1
Dirt Forum Champ
Total posts: 516
posted July 20, 2004 12:41 PM  
Running more air in the left front will loosen the car up. It puts reverse stagger in the front if your tires are the same size.


Deak-Jr
Dirt Forum Racer

Total posts: 81
posted July 21, 2004 09:16 AM  
How much pressure -- I guess it would be better to say how LITTLE pressure -- do you guys run in DOT tires, no beadlocks, no inner liners?

I have been running 245/60/15 on the back of a metric Monte, around 20# RR and 18# LR. How much lower would you go? 1/4-mile, good banking, usually tacky and doesn't dry out too much as the evening goes on.


racer17j
Dirt Forum Champ
Total posts: 5390
posted July 21, 2004 10:40 PM  
I run tubes but have gone as low as 13 in the lr and 14 in the RR but i really feel much more comfortable with at least 15 in the RR.

hobby39
Dirt Maniac

Total posts: 112
posted July 24, 2004 07:02 AM  
Well I should of listened to you guys. But it was hard to go against what my sponsor wanted he pays 80% of the bills. I lowered the LF tire pressure and it ran better then in past races but not as good as it did in practice had my sponsor air the lf to 24 hotlapped the car after the races were over and he is now convinced that i need to run the higher pressure the car handled noticibly better even from the stands.

[This message has been edited by hobby39 (edited July 24, 2004).]

deegan01
Dirt Roller

Total posts: 22
posted August 08, 2004 11:28 PM  
i run 12 in the left side 15 in the rr and 17 in the rf with no tubes just take a grinder with a wire wheel around the wheel and rough it up a lil and it makes it harder for your tires to unbead

rblracer
Dirt Roller

Total posts: 25
posted August 09, 2004 05:13 AM  
I don't run over 16#R,13#L on the dry slick over here, usually less at the beginning of the program, no beadlocks and no liners

maniac motors
Dirt Maniac

Total posts: 128
posted August 23, 2004 09:41 AM  
i run tubes 16lbs both right sides 14lr and 12lf knock on wood no flats even when track is like a skidder trail in turns and everyone else is peeling tires off right sides.(you cant throw a car sideways through big holes with dot tires at least not for long)

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