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Author Topic:   Bicknell dry slick set up
dbradley
Dirt Freak

Total posts: 251
posted July 04, 2005 06:42 PM  
Hey guys got this recommended by Randy...Can ya go through this and give me some reasoning for each to help me understand?

1. I would like to see the left percentage be 54 to 54.2% and the rear % be 63.5% with 6 gallons of fuel (4")

2. You should be running 3" backset wheels on the rear, a 12x5 R.F. and a 10X4L.F.

3.-If you require more forward bite, you should move the torque arm to the third hole back from the tranny and/or install BRP
432 Torque arms(neg 3 degree arms)in the car.

4. Put a 275 on the left front spring for a bull ring race track and put the left rear weight up to 60# left rear heavy.

5.Run the rear radius rods in the top hole right rear and the middle hole left rear.

6.Make sure you sipe and grind your tires.

7. Run the frame heights at 5.5" across the front and 6.5" across the rear.

We run the same wheel offsets but the rest would be pretty big changes for us. We are using the negative 3 degree torque arms.. should we still think about moving to the back hole

dbradley
Dirt Freak

Total posts: 251
posted July 07, 2005 03:45 PM  
I see nobody wants to tackle this one...
Well...how about just one..In order to get our rear percentages up to where Randy wants them....We get to 63.5% with 12.5 gallons of fuel and 30 lbs of ballast...our estimate is we would have to put in about 70 lbs of additional ballast...granted we skate our rear when it's dry slick but this seems like a bunch of rear weight...Now what would this do to our frnt end handling???

racerwilson
Dirt Freak

Total posts: 357
posted July 09, 2005 11:58 AM  
Well we are at 64.3% rear with 25lb bar at left rear tail. 54.4% left. 14x3 left wheel, 13x3 right, 10x4 LF, 12x4 RF, If we use a 12x5 on RF gives us a entry push. We have adjustible torque arms in the lowest setting with chassis hight it gives us a 0 deg pinion. 225 spring on LF 175 on RF 40 lbs LR wegde.Rear rods are in middle hole both sides. Sipes and grind tires. We use 4 different types of grinding whees depending on track condition. chassis hights 5 1/4 LF 5 1/2 RF 6 1/4 LR 6 1/2 RR Shocks 110-55 on fronts 208-100 LR 230-70 RR all Bilstien valving by Shadow racing products.

vasquez
Dirt Roller

Total posts: 14
posted July 09, 2005 01:05 PM  
wilson why would going to a 12 - 5 r.f. wheel cause a push ? i thought that helps the car turn.

skippydoo
Dirt Roller

Total posts: 18
posted July 09, 2005 07:32 PM  
I have a 05 teo low rack and it was good in the beginning of the season, but now that its really slick it dont have the bite lie it used to have tried many things, but I blew up so im on hold. I have not been to lucky the past two years. 14 races and two big blow ups with good motors. Im not lucky like those wilsons. I was told what was wrong with the one he had come apart. I broke a valve and its going to cost 6500 to fix. My reason to post is I had 75lbs in the back of my teo just to make weight and a full tank of gas. I dont like all the left side % when its slick less seems to help. I also found a stiffer rr 925 bar gives more side bite than a 900. I also have been told hearn uses an easy out shock on the lr. Car needs to be stable in order for one to drive it fast. If it floppes all over you will never go fast. I gotta say I dont know if im a fan of the low rack and narrow frame cars. We tried this in the 80's and 90's first we had a low rack and cut it out raised it an inch and were alot faster. then on year we had a car that was very narrow for wider wings. The motor fit very tight. That car sucked big time. Could this be why the pmc cars go good? higher rack and wide frame?????

vasquez
Dirt Roller

Total posts: 14
posted July 14, 2005 03:26 PM  
bradley, do you have the bicknell birdcages where you can change the height of the roller ? if so, which do you use top or bottom ? is your car a standard rack ?

dbradley
Dirt Freak

Total posts: 251
posted July 14, 2005 06:54 PM  
Vasquez,
We have a standard rack with the 3 inch up snout on the front...Both rollers are in the rear holes

dbradley
Dirt Freak

Total posts: 251
posted July 16, 2005 06:12 AM  
Racer,
Why does the 12x4 help you with the corner entry push...We went with all the recommendations and now have a corner entry push
D

racerwilson
Dirt Freak

Total posts: 357
posted July 16, 2005 07:01 AM  
We always run a 12x4 on rf and in the past when I used a 12x5 we had an entry push. If you put on a 12x5 go back to the 12x4. We have a 52" axle

mix5545
Dirt Roller

Total posts: 6
posted July 21, 2005 04:52 PM  
What tires do you run? Is the front panhard down all the way? RF spring rate? Which track is this?

racerwilson
Dirt Freak

Total posts: 357
posted July 21, 2005 05:03 PM  
hoosier 65o and 700 on rr ,150lb spring rf,fph bar all the way down. chassis hights lr 6.25, rf 6.75, lr 7.25, rr 7.75. Rear bars rr 875 back hole, lr 975 front hole. All tracks.

fhracer
Dirt Newbie

Total posts: 3
posted July 21, 2005 06:15 PM  
Why such the big split on bar sizes?? doesnt it make the car loose coming off with such a stiff LR??

racerwilson
Dirt Freak

Total posts: 357
posted July 23, 2005 07:08 AM  
The corner with the heavier rate gets the bite. Rockets off the corner.

racerwilson
Dirt Freak

Total posts: 357
posted July 23, 2005 11:05 AM  
The corner with the stiffer rate gets he bite. Awsome fwd bite off.

dbradley
Dirt Freak

Total posts: 251
posted July 23, 2005 06:27 PM  
Racer, wow,
You have gone way up on your ride heights.... 7.75 on the RR, man thats up there..
How is it working with the dry slick...We have been playing with some taller ride heights, but mostly with split...seems to be getting better...we also learned we went too many races with our torsion bars.
D

racerwilson
Dirt Freak

Total posts: 357
posted July 24, 2005 06:10 AM  
Should repace around 8 races. Most teams wait till the car will not adjust properly on the scales. Some teams are at every 4 races but ost guys dont want to spend the money for them.

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