My aggressor is running fast... I had it on a track record pace this weekend in stock....BUT it has 1 issue that Im just too green to figure out... for the first 3 laps the car really seems to push in the turns... .I mean understeer like I have to lift to make it.. I realize voltage high initially BUT after 3 laps the car turns beyond belief and the lap times show the car is faster at that point..AND to disprove the voltagespeed issue I took a practice run with a 10 turn mod and the same thing happened... 2-3 laps in the car handled perfect..

I know Im getting all my compound wiped off...I just dont quite get what I can do to make it hold from the get go...

FWIW Im running the car pretty stiff... the track is super smooth flat carpet oval...

I am happy with the car BUT in the first fewlaps Im having issues because even if I start first with the car actiing the way it does I usually get passed then have to work back through traffic when the car frees up...

for traction compound Im using paragon....inside of both front tires all of rear..

What can I try??? Give a neewb some ideas..

Can you post a little on your setup. What class are you running, how big is the track. Tires, wing, body, offset, etc.

track is maybe 70' long...oval... stock class 4 cell. tires pink rears pink inside front purple outside front..

Offset medium springsteel t-plate, silva side shocks 30wt oil... side shocks with Wolfe opaque springs...center shock 50wt silva silver spring..

Front springs red standard wolfe outside, red progressive wolfe inside..

I tried a white spring on the outside it seemed to help a little. but was too close to tell..

body mcallister 2004 taurus, wing thunderbolt BIG wing>>> No rear spoiler used on car..

the turns > best I could say is medium...not paperclip BUT ive seen much wider..

Kenwood - The problem you are having I'm suspecting is the RF Tire - Purple tires generally take about 3 laps to "heat up" and produce traction. It sounds like your general car set up is really good once you get past the first 3 laps - If this was my car - I would find a "softer" purple RF --- If you are running TRC tires -

Magenta = Soft Purple...

Keep up the good work -

TJ Domark - Team CW

Im running BSR tires... So for them would I just go down from purple to say a double pink???

I love the car so far...I am the ONLY custom works in a sea of hyperdrive and KSG cars... Doing well so far...I am just to the point of needing a few fine tuning points.. I will give a slightly softer tire a try...

I am wondering though...Ive been running the purple up front for a while now...BUT the tires are getting thin....Im wondering now if maybe just the thin tire is causing the problem to appear... with ahrd rubber and not much of it between that and hard plastic... the tire has almost no give now..

A double pink may work... or try heating the right front tire up a littel with a heat gun... sounds hokey, but it could fix the problem.

Im running BSR tires... So for them would I just go down from purple to say a double pink???


You might try a gold or silver on the RF if you want to stay with BSR.

I GOT IT!!!
I know you feel you have all the stuff off your tires, but I'd guess there's some residue. Try scrubbing your tires on the track, by dragging your car by hand after you've cleaned them. Also, I apply my "stuff" 3 races before, then wipe them clean after 5 minutes, that way they have some time to dry before my run.
Natural rubber is tricky, maybe go with exotics (Like 3 whites, same durometer as your pinks, and a hard black, same durometer as your purple) for a run or two, if it still does it, it's chassis.

Later, Bret

generally everyone i know that runs a purple right front has this issue.. it over the years is just something you expect.. if the car works well after the initial 3 lap lift, i thinks it is ok... what u can also do is go to a set of tires with less ruber in them.. like whites and grays... thats what i run ...

it over the years is just something you expect.. ...

See thats the problem....When I left the sport you had basically Green Dot, Blue Dot, or a rubber capped tire....LOL

Over the years I never paid attention...lol

I have some white rears already>>>HMMM maybe Ill try the white/silver combo and see whats up since my purples are all but gone now..

thanks for the tips guys...Ill try them out next weekend and hopefully have another record fall to the aggressor.. :)

I ran my CW for the first time this weekend and had the identical problem in stock. Longer ozite track so take it FWIW. Result of changes... my personal best of 55 laps. haven't run 1/10 scale in a very long time but extremely happy with the car given the first few runs with it.

1) RF Spring: changed from a wolfe std. green to wolfe std. red.; LF wolfe green
2) Rears side springs: changed from wolfe opaques to wolfe silvers
3) center shock: silva silver, increased preload a touch

tires:

RF jaco black
LF jaco grey
RR jaco grey
LR jaco white

The rest of the set-up was the same starting set-up as posted earlier by steve salvas.

Jack

kenwood....

bsr's pink and purple are quite popular....running 19t or mod...but for stock...you should stick with either green-blue...or white-grey combo's...

i would suggest running newer bsr's green(John recently release a softer green wich is good on LR) on the LR

on RR either a harder green(from a previous batch) or a grey

LF either white(for less traction) or a grey

RF Steve and i have been having great results with a grey-silver(its a grey with a small silver lip on the outside of it..)

if you need more front bite...use LF white and RF grey!

Eric Salvas

team BSR
team CW

I talked to John and Kevin this weekend about tires for stock racing. We talked for a little while and decided on two whites in the rear, a grey left front and a silver right front. When or if the track has a ton of bite change to a grey on the right rear. This set up works great for stock on a smoth flat carpet oval. Every different set-up requires different tires. What I like to do is pick the tires that I want to run in whatever class I'm going to run. Then I try to dial the car in to those tires. Obviously you can't always do that, but if you get your car close you can change compounds to dial it in. You may need to go to a little harder or softer tire. Try to clean your tires every couple runs to keep your tires consistent. Use lighter fluid and wipe clean. Keep your "doping" routine consistant also. You may change your "doping" routine to help dial your car in. Sometimes a half on your left front and sometimes a full left front. Try to keep the pinks and purples for 19T and Mod racing. Hope this helps. Everyone needs to try BSR's. John is making a great tire. I'm glad he's now in control and making tires for what the racers want.

Eric,

Why is it not a good idea to run pink/purple tire combo's in stock? i have played w/ it, and noticed about the same speed. I am just curious as to the advantages/disadvantages of pink/purple exotic rubber vs. white/grey in 4 cell stock racing..

experienced showed me...that your won't be able to fine tune your setup with those...the car will be driving good..but won't be as fast as if running white gray...or green familly foams...could be in the resistence they give you trough the corner(rubber bases foam)in stock(low power) resistence or friction trough corner is crucial...less wil equal more corner speed...in mod...you need a ton of grip...to maintain the HP trough the corner...

either last year snowbird race(white-grey)or local track(low bite...greens)i always performed more without the pinks and purples in stock....those are good in some 19t and a must in mod...

I had this same problem in 1/12 scale 19t running a purple on the RF. I too was running Paragon (ground effects) on all 4 tires. I switched from the ground effects to the new traction action only on the RF & it solved my problem. I did have to free up my set up some because the traction action doesn't have as much grip as ground effects. It seems to me that traction action loses some bit as the purple RF increases bit so it is a trade off through out the run. 1/12 scale is very twitchy anyway & this really helped stable the car out.

__________________
Brent Pearcy
Bulit Motorsports (http://www.bulitmotorsports.com/), TQCells (http://www3.sympatico.ca/tqcells/)

I agree with Eric 100% on this one. banked tracks, flat tracks, everywhere that Faom tires are used, I avoid running the pink/purple rubber unless it is 100% needed. The roataional weight of the tires alone is performance inhibiting. If you can thet the other tires ( green/blue, white/grey/black) tires to work, you will be faster with them for sure. The pink/purple rubber works when you can't get teh power down without them, and anytime that hte car seems to go away in the run, as they develop heat, and more traction during a run. That's why if your car is pushing at the start of a run with these tires, then gets better, the tire is heating up and then working better. Also, while I am at it, these tires usually don't mix well with other types of foam. I have also found that 99% of the time, if you are running green/grey style foam, and try one of the rubber ( pink, etc) tires in the car, teh car will change as the run goes on... and usually that's not good. if you are gonna run them, run them on all 4 corners, or dont' use them at all.

I avoid running the pink/purple rubber unless it is 100% needed. The roataional weight of the tires alone is performance inhibiting. If you can thet the other tires ( green/blue, white/grey/black) tires to work, you will be faster with them for sure. .
So, since I'm new to stock racing and didn't think about this, how much do you figure I can gain by switching over??? I've been running pinks and purple for ever, and my CW works is great, but I always seem to be about a half lap (1.5 sec) off.
Will the tire change give me what I seem to be lacking???

Thanks, Bret

Yes Bret!
Nick

FYI...i weighed some BSR pink/purples vs. white/grey, and there was no measurable weight difference, to my surprise. But, i would buy into Eric's post about less friction w/ the white/grey/green combos

Have you ever felt the difference between the two after two runs? The pinks and purples have way to much bite for stock racing. People try to set up thier cars by using tires. I'm not disagreeing to this and it is a valuable part of your overall set-up, but when you arive at the track you really should try to make your car work to the best tires for your class. I'm not saying you can't make it work with pinks and purples, but on flat carpet ovals they are usually not the best thing to use. It's better to start off dialing your car in on white's and gray's in stock.

Bret, I'd be surprised if it didn't make a difference. I too have weighed the tires, and have seen no difference, but a new, uncut tire to tire, they sure feel heavier to me.

Have you ever felt the difference between the two after two runs? The pinks and purples have way to much bite for stock racing. People try to set up thier cars by using tires. I'm not disagreeing to this and it is a valuable part of your overall set-up, but when you arive at the track you really should try to make your car work to the best tires for your class. I'm not saying you can't make it work with pinks and purples, but on flat carpet ovals they are usually not the best thing to use. It's better to start off dialing your car in on white's and gray's in stock.


Thats just it>>> I came in knowing little to nothing....I saw almost everyone running the pink/purple setups>>> . Whats funny is when I came back being from the old school days I looked at the track and bought a set of GREENS...I still have them...I had some handling issues>>>More my OLD school narrow hyperdrive than tires BUT I was told bby all not to run the greens and that was causing problems...I switched to white green...then was told that was wrong...Ive been pink/purple ever since.....

I suppose its time to start playing around again...

If I went with Green/blue what am I doing then???running Green on 3 and a blue outside front???

it depends on the bite in the track and what your car is doing, but if you want to go with the green/blue set up I would definately run three greens and a blue right front. If you already have them I would take them down to about a 2.25 or so. On a flat track I'd run a little stagger up front. In the back you can either start even and let a little reverse stagger wear in or cut about a .015 or .020 reverse stagger in the rear. Make sure your chassis is efficent and free, check the rake in your chassis, and tune from there. In stock set up and driving are everything. I'd definately get away from the pinks and purples and make your car work without them. If you get close fine tune it with the way you dope your tires. That's what make these things fun. You can change 20 things to make your car turn in harder, but it's finding the right change that's gonna make you faster.

i just re-read your post.....you could also start with a white on left rear that would be ok.

For flat track with Jaco rubber on stock, I'd runa black RF, green LF, white LR, and a grey RR.

For flat track with TRC, I'd run grey rears, a black RF and a green LF.

BSR, I'd say white LR, grey RR, grey LF and a grey/silver or grey/gold RF.

You can try green rears with any of those setups, but I doubt that you will need it.

The other thing that I find with stock is that the tq traction compound las a little less bite, so I use that, it seems to not get as sticky, and the tires can be run more times without cleaning.

Also, clean the tires every run after they have about 3 or so runs on them, with dishsoap or lighter fluid. DO NOT use motor spray, I see guys using that, but it softens up the foam somethign terrible... not good.

I'd agree with Jason. :lol: