View Full Version : OVAL QUESTIONS$$


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mjmeers17
10-16-2002, 10:27 PM
anyone have a setup for 1/12th scale flat track approx. 150ft oval

disruptor10
10-17-2002, 06:54 AM
Brian would u recommend a wing in 19T ? racing at Racing City in south glens falls,track kinda bumpy.Does it tend to slow u down using one ? I know it will keep the rear end planted and all.Do u recommend a certain one and should it be body mounted or pod mounted ? Dave Lareau

Brian Burkhart
10-17-2002, 09:35 AM
MJMEERS- i havent run 1/12th in a while so i dont want to steer you in the wrong direction.

disruptor10- it really depends on the track whether you run a wing in 19t or not. ive never been to glens falls so i dont really know the dimensions. if its not much bigger than say the boys club you probably dont need one. when you run a wing flat like i always do its not really creating alot of downforce but more directional stability so it doesnt slow the car down a whole lot. you should always run wing on the body on flat carpet tracks.

MIKE VALENTINE
10-17-2002, 09:40 AM
disruptor10 there running wings in mod since the track has gotten a little bumpy. i'd say if you can stil get the car to turn in well with the wing run it. the wing will give you the extra traction needed to get through the bumps, applying power off the turns.

brian will you be making any of the orl races this winter? didn't mean to butt in, but i have run there a few times.

Brian Burkhart
10-17-2002, 02:48 PM
MIKE- no problem man. im not 100% sure about the ORL races..id like to get to a couple but that really doesnt mean a whole lot unfortunately.

MIKE VALENTINE
10-17-2002, 02:52 PM
just wanted to know so i make sure i would attend those races. i don't know how many i'm going to either. have you heard any more about the 3300's deal and when they will dock:confused:

Brian Burkhart
10-17-2002, 03:43 PM
both forms of 3300's are available now Mike...i have Trinity's and SMC's in stock.

AutoDynamiX
10-17-2002, 04:02 PM
gkraios@rocketmail.com

DELIVER!!! :devil:

Brian Burkhart
10-17-2002, 04:08 PM
Kraios- i already emailed you my numbers...didnt you get them?

AutoDynamiX
10-17-2002, 04:39 PM
Got nothing... Send 'em again

Mark Recio
10-17-2002, 07:03 PM
C Daddy? I'm not the only one having problems with your email ;)

See you this weekend,

Mark

pepe
10-17-2002, 09:52 PM
Brian,
When you adjust your camber do you set your camber gauge first then put it up to the tire or put it up to the tire and then push the guage to the tire? (RPM GAUGE) I've tried both ways and get different readings.

Brian Burkhart
10-18-2002, 11:43 AM
pepe- i push the gauge to the tire and get the reading that way..ive never tried it the other way to be honest with you.

pepe
10-18-2002, 12:02 PM
Thanks I have been doing it that way but saw someone set the guage first and set their camber that way thats why I tried it?

GiantScale
10-18-2002, 02:43 PM
Brian, I know you dont like stagger except for what you get with wear,, but looking at a picture of your car , it looks like you run a full width LR wheel. Is this right? How do you feel about stock wheel widths?

And When I saw a chart of jaco foam harnesses, I expected to see black , gray & white in the firm range but they are softer.. Why do they have less resistance than the reds, orange/purples etc..?

Also, is there a chart of spring colors somewhere? url? I dont know my springs yet..

Thanks

Mike:cool:

BadSign
10-18-2002, 04:57 PM
http://www.deccosoftware.com/forum/tech/SpringRates.htm

Everything you'll need.

GiantScale
10-19-2002, 10:01 PM
Thanks bad! Got that one book marked!

dazzler
10-20-2002, 10:50 AM
Brian, Whattires would you run on a 130 flat concrete indoor sprayed with vht. When you walk on the track it will almost pull your shoes off your feet.
thanks.

big mac
10-20-2002, 05:22 PM
Brian does side shocks work on all banked carpet tracks in 19t.If so how much would you preload them.Do you use scales to set your car up?
What you run left,cross and rear %. thanks Mac

Mike Wilson
10-21-2002, 01:02 AM
can anybody shed any light on whether or not race city motorspeedway has shut down there carpet track. am planning on racing there if it is still open. any help is appreciated

dazzler
10-21-2002, 06:39 AM
Nitrohead, I was in Mooresville in August and they were closed down.

Brian Burkhart
10-21-2002, 10:01 AM
Giant- you are right about the stagger. as far as the whidth of the tires i use. i always run a full widthe rear tire. the reason for this is that when you start narrowing tires you lose forward bite which is very critical especailly in modified racing. i dont race alot of stock but i would still run full width tires if i was..blacks have less rolling resistance than a purple because they do not heat up when you run them. an orange or red are basically a tire that doesnt really do a whole lot of good in most situations.

dazzler- if the whole track is sprayed including the straightaways yu can probably run just about anything if its that sticky. purples may work well because they generate heat when they are run.

big mac- side shocks are the best setup for all tracks because you can adjust spring rate and damping rate individually. preload is setup when the pod is twisted to one side the shock spring just barely comes off the bottom of the shock..i dont use scales to set my cars up. i use the old eyeball the rear pod off of a flat surface.

DynoMoHum
10-21-2002, 04:58 PM
Well... I've completed reading each and every post on this thread... whew... lots of info here.

I've still got questions... One of my biggest ones is something that perhaps Brian can't answer all that well since he apparently doesn't use scales at all... However I feel a strong urge to ask it... So here goes.

I've got to put aproximately 4 ounces of weight on my car somewhere... I'm still trying to figure out exactly where it would be best placed. For some back ground... I'm going to be running in a class refered to as 'bush', where we use 6 cell Ex-Spec batteries, Street Spec tires (gray stripes), and rebuildable stock motors, all on a flat carpet track. My tire choices are limited. No Jaco blacks here... The question... Where should I put my 4 ounces of added weight.

Assuming I can figure out a way to attach all this weight as far to the left as possible, should I put the weight near the front or the rear? Or said another way... wich is better? having the majority of the weight towards the front? or to the rear?

I realise that I may have to tweak the weight location based on my driving style and/or traction needs. But I need a good place to start. As it stands right now I have like 17.4 oz. on the front and 20.6 oz. on the rear. Currently I have about 15.25 On the left Front, and 12.3 on the left rear. This is with two Red side springs (going to change one to a gold tonight). I've got ZERO track time on this car, and will have one night of practice before my first competitive race in this class... So I need advice...

(The Car is a L3O, with normal chassis and stock front springs because I haven't purchased any other stuff yet. I do have a complete selection of rear springs)

pepe
10-21-2002, 08:26 PM
Brian,

What type of things do I need to be looking at if I'm slow from the middle off.

Brian Burkhart
10-22-2002, 11:10 AM
TMFU- when i have to add weight to my cars i actually try to keep it in the center of the car because then it wont affect your handling at all...you dont really want to adjust your cars handling alot with static weight because if it falls off the cars balance will be off..(you may get disqualified too but we are assuming you wont at this point:))..if you do want to move some weight around in the car i would recommend starting by putting at the left front to help that tire work more and make the car turn in a bit better.

pepe- usually when your slow off it means the car isnt "driving" off the corner..if the car wont naturally run up towards the outside wall you are probably scrubbing speed because it is fighting the normal direction it needs to go...you can try to move the left rear tire in towareds the middle of the car..this will help the car drive off better but wont affect entry at all.

BadSign
10-22-2002, 12:13 PM
TMFU,

I ran a very similar class last year with a lot of success. Hold one finger under the chassis and move it around until you find the center of graavity. That'll be the place to put your weight, Like Brian said.

I'd also highly reccommend you use a stiffer LR spring on the car as Brian suggests. A Blue LR/Silver RR worked well for me.

Lastly, I'm guessing your not allowed wings or to cut out the rear of the car. Try running a little reverse stagger to prevent the car from getting loose off the corner. I usually had my LR around .02"-.05" smaller than the other 3 tires. I know Brian likes to wear his in, but when you don't have a wing it really helps.

BTW, I got all this info from this thread and it helped tremendously. I've never met Brian but his info is gold!

DynoMoHum
10-22-2002, 12:33 PM
Ok.. thanks...

Currently I've molded some lead weight so that if fits perfectly along side my stick pack. Curved to fit the batterys themselves. Sort of fills in the missing coner that the radius of the battery creates. I am mounting it right along side of my bateries. So far I've put it on to the left of the batteries and it hangs out giving me maximum Leftword weighting. I can slide it forward or backword quite easly. I could move the battery and weight towards the center if it would help as well. For all intents and purposes, the battery pack just weighs 4 ouces more.

I ran things on my test track last night for the first time. ( a very small ozite oval with 14' straights and about 6' radius in the corners) Needless to say I wansn't able to get up a whole lot of speed, but I kinda liked the way it felt. It was a little loose, but I figure once I get up some speed on a bigger track, some of the stearing will go away and it should ballance out. I also think I will have pretty good adjustablity if I need it. If this doens't work... I've got lots mroe lead that I can mold into other shapes...

If I loose my weight I'm going to loose my batteries too, so it won't matter that much if I get DQed. Quite frankly... I'd like to design a chassis just for racing with a stick pack like this... the current "factory" chassis' I've seen don't seem like they'd help me much.

We can use a 1" spoiler, no wings/tail fins or ground effects... NASCAR style bodys...

MIKE VALENTINE
10-22-2002, 12:38 PM
BadSign Try running a little reverse stagger to prevent the car from getting loose off the corner. I usually had my LR around .02"-.05" smaller than the other 3 tires.

reverse stagger is having the right rear smaller then the left rear.

BadSign
10-22-2002, 04:15 PM
whoops, I mis-typed. that shold've been RR, not LR
Thanks for catching it!

alexaj46
10-23-2002, 10:56 AM
Brian, when you told Pepe to move his LR tire in, was that to loosen him up ?

Brian Burkhart
10-23-2002, 12:52 PM
alex- moving the left rear will help the car drive off the corner better because you are narrowing the rear track...when you move the left rear in you do have to add left rear weight in the car because it will go down because the tire is now moved over.

AutoDynamiX
10-23-2002, 12:55 PM
Brian - Got your email and will buzz you tonight.

Now, GET TO WORK!!! :D

Brian Burkhart
10-23-2002, 02:53 PM
Im always working!!!

impact
10-25-2002, 04:04 PM
Hi Brian I was wondering what is the distance from the center of the car to your inside rear tire is?(where do you start for flat carpet oval).also what ball studs did you run at Snowbirds?I'm running the carpet pro with a macattack pod and just cant quite get out of the turn good enough(your snowbird setup)any recommendations(little loose off).I was thinking small wing??

RC MotorHead
10-25-2002, 08:11 PM
Hi,I was wondering the types of shock springs people are running?Are people using the actual oval/onroad spring that are Black rated at 3.20-Green rated at3.50-Silver rated at3.85 or using the touring car springs that are much stiffer?Just looking to find out what I am needing for flat carpet track soft or stiff center spring.Thanks for time.

HURRICANE_Pace
10-26-2002, 12:21 AM
for flat track i use the TC3 silver or the AE red spring for truck..you need to cut it! both work really well!

Pace

rookrc4
10-28-2002, 09:40 PM
Hi Brian,
First time on Hobby Talk. I have a Woods Extreme pan car and I'm having trouble getting the car to turn. I ran Mt.Plesant this weekend, 4 cell 19 turn. I was having to coast through the corners and I would run the middle of the corner. I run wolf springs red on the lf. fr. white on rt. fr. orange on all 3 rears. Tires, Purple on fr. and white on rear. Any help would be a blessing.

Bob Wright
10-28-2002, 10:19 PM
rookrc=Try a softer tire on the lf if your running BSR's a black will work.

MACE
10-28-2002, 11:13 PM
I am no Brian but, I would run
black right front
grey left front
grey or black right rear
grey or white left rear

Just my thought

Brian Burkhart
10-29-2002, 10:05 AM
rookrc- purples on the front and whites on the rear is usually a bad idea...the problem is whites have alot of traction from the get go and purples dont...i would try and run black right sides and gray left sides and see how that does for you..i would also stiffen you side springs so the car wont lean over in the corner as much.

rookrc4
10-29-2002, 08:38 PM
I run the delta side shocks, what weight oil and spring combo.should I run?

hub14
10-29-2002, 09:17 PM
how can i get zubie juice com drops?

HOOPD1
10-29-2002, 09:18 PM
White left blue right with 20wt oil always worked on my old woods car with Delta shocks...........man I hated those shocks.

MACE
10-29-2002, 09:25 PM
hub14 here you go www.speedjuice.com

LITTLEAL 1
10-29-2002, 10:25 PM
Brian what effect does moving the rear pod to the left holes do for the car on the mac attack.

Also what should I try my car seams to want to keep turning it wont float to the out side out of the corner. the track has tight corners and it wants to come out and stay in the bottom. Iam running black lf black rf red rf spring green lf spring white rears 2 1/8 spacers on the lr. Thanks

Brian Burkhart
10-30-2002, 11:31 AM
rookrc- my best advice would be to get rid of those shocks...they are the most inconsistent shock ever made...get some of the associated micro VCS shocks and you will be much better off.

the left holes give you a standard pod setup..the right holes are the offset holes...i would get rid of those two spacers you have at the left rear..that will help the car drive more off the corner.

LITTLEAL 1
10-30-2002, 08:09 PM
On a flat carpet tight corners should a guy run the rear pod to the left or the right set of holes and what efect does that have on the car

rookrc4
10-31-2002, 12:59 AM
Brian, are you talking about the L3O or the Woods Extreme?

Brian Burkhart
11-04-2002, 10:06 AM
littleal- it really depends on how much traction there is at the particular track..if there isnt alot of bite you should the pod offset to the left which means you use the right set of holes..this will help the car accelerate off the corner better..if there is good traction you can try the left set of holes and this will help the turn a bit better but not alot.

rook- i wasnt talking about particular cars but rather the shocks that are on the woods car...the associated shocks already come with the best micro shocks in the business.

RCRacer00
11-04-2002, 11:10 AM
QUESTION???? O.K. A couple things. First, I'm brand new to oval(not RC racing but oval)I've got a rc10L2 and a rc10Lss. As of right now the L2 is set up i raced sunday, 4 cell stock, did 45laps in a four minute main. anyways. I've heard the term ROLL OUT for gearing. What is the formula for the proper roll out? second out of these two cars which of the two should i run? I'm mostly going to be running flat carpet oval. Thanks in advance for any help.