View Full Version : Any tips on freeing up a car


darkwing
12-05-2005, 07:55 PM
Looking to free up my car some more. Any tricks you know will be helpful.
Tip #1 Harder compound tires
Tip #2 Stiffer side shock springs
Tip #3 Stiffer center spring
Tip #4 Stiffer t plate
Tip #5 Lose the wing or trim the spoiler.
What other ways is there ?

PUF19
12-05-2005, 08:13 PM
Move the left rear in

Al Spina Fan
12-05-2005, 08:37 PM
Orange Rears.....lol

swtour
12-05-2005, 08:47 PM
do you want to free it up...going IN...or coming OFF? ...or both?

me21
12-05-2005, 08:51 PM
Move left rear in, and right rear out

erock1331
12-05-2005, 08:53 PM
Move left rear in, and right rear out

do the hokey pokey and your turn yourself around, that's what its all about

Bob Wright
12-05-2005, 09:01 PM
If your running pinks and purples switch to black white gray tires.

Al Spina Fan
12-05-2005, 09:01 PM
He's fast and funny too.......lol

SlaminRC17
12-05-2005, 09:36 PM
While you're at it Eric, can you demostrate the dance for us?

me21
12-05-2005, 09:49 PM
Man eric you are just out to get me arn't you....I swear ever time i post you have some to say.....LOL

Roadsplat
12-05-2005, 10:24 PM
That was funny Eric.

RC

Mr.fastman
12-06-2005, 12:59 AM
Change body's to something with less front downforce.
Add Chassis rake, raise rear.
Rear Steer
That should get things started.

jsrocket13
12-06-2005, 01:32 AM
He's fast and funny too.......lol
Dont forget short sorry eric your still crazy after all these years really im mad i didnt think about it

darkwing
12-07-2005, 08:41 PM
swtour both . I run stiff t plate red wollf side springs 40 oil on the sides 80 weight in the center shock,offset pod left rear all the way in and I run three grays and one black tire and still slow in the corner. But they way I run a dodge body.I am puzzeled.Mr fast ManI never new adding rake freeed up your car ! I thought you always wanted it level ?

Al Spina Fan
12-07-2005, 09:00 PM
swtour both . I run stiff t plate red wollf side springs 40 oil on the sides 80 weight in the center shock,offset pod left rear all the way in and I run three grays and one black tire and still slow in the corner. But they way I run a dodge body.I am puzzeled.Mr fast ManI never new adding rake freeed up your car ! I thought you always wanted it level ?

Rake is generally a fine tunig adjustment done in small increments (.005") lowering the nose adds front end downforce. If you are running that setup, a harder right rear or removing the offset pod will help. You need to scale the car to check the left rear weight.

pepe
12-08-2005, 07:00 AM
removing offset pod?

davz
12-09-2005, 07:14 AM
stiff t plate red wollf side springs 40 oil on the sides 80 weight in the center shock,offset pod left rear all the way in and I run three grays and one black tire and still slow in the corner.
dude thats a crazy setup. Try soft t plate, 25wt in side shocks with blue springs, 40 or 50 wt in center shock with medium spring. It sounds like the car is just real bound up. If you are real bad and you try a drastically different setup, it'll be clear what direction to go. With that stiff of a pod, it's not letting the right front go down.
hope this helps

tharv
12-10-2005, 09:06 AM
I have a corner speed question as well (carpet flat track). My car seems to be pretty good in the entrance & middle of the turn, but seems to really die on exit. Sounds like it bogs down. Currently running TRC Purple rf, Pink lf, Purple rr, Gray lr. Should I maybe try a softer rf w/ a little more spring, so the chassis doesn't have to roll as far to get the desired traction ??? Am I totally off base ??
Thanks,
Tom

pilot1
12-22-2005, 12:13 AM
How do you get rear steer in the car?Do you use stager in the tires?I am new at this but looking for some setup info.I raced for the 2nd time last weekend and my car seemed really tight in the middle of the corner and I was not sure what to try first.I was wondering if anybody made a car that would bring the left rear forward in the corners like a stock car does.Any info would be great!


Thanks, Todd

pepe
12-22-2005, 12:25 AM
What kind of car do you have Todd?

jonnycash
12-22-2005, 11:39 AM
I have a corner speed question as well (carpet flat track). My car seems to be pretty good in the entrance & middle of the turn, but seems to really die on exit. Sounds like it bogs down. Currently running TRC Purple rf, Pink lf, Purple rr, Gray lr. Should I maybe try a softer rf w/ a little more spring, so the chassis doesn't have to roll as far to get the desired traction ??? Am I totally off base ??
Thanks,
Tom
Try running a lower rollout or the same rollout with a larger spur/smaller rear tire

pilot1
12-22-2005, 09:30 PM
I have a l4o with stock motor.I bought it used so I am not sure what the specs on the springs and oil are.I bought new oil today so I will know where I am at.I did move the front a arms back to the rear holes.Our track is pretty small so I think that should help get around the corner a little better.Is that going the right way?How will the center shock affect the handling,when I tighten or losen the spring?I have a new charger body that I am going to run on it next week.I have a monte carlo body on it now.Will the body make much difference on a short track?We are doing 3.2- 3.3 lap times on our track that we are running on.

Todd

jonnycash
12-23-2005, 10:25 AM
I am not an expert, but I don't think the body will have as much of an effect on a small track. It may change it a little bit though. Your best bet would be to change the body and nothing else. or switch between the 2 and see what changes if any occurr.

Dan
12-23-2005, 06:11 PM
How do you get rear steer in the car?Do you use stager in the tires?I am new at this but looking for some setup info.I raced for the 2nd time last weekend and my car seemed really tight in the middle of the corner and I was not sure what to try first.I was wondering if anybody made a car that would bring the left rear forward in the corners like a stock car does.Any info would be great!
Thanks, Todd

Stagger is not rear steer, in the chassis sense of the word.
You can get a steel t-plate that has offset bushings in it, to
adjust your rear steer.
Or, you can elongate the left hole on your t-plate A LITTLE BIT,
to give you some.If you only want to try say, .015", then only elongate your
hole .015".... don't go making it 1/8" bigger.
I've used a small round jewlers file for that, doesn't take long at all.
If you take a good hit, or whack the wall, make sure you check that your
plate didn't move, or get loose...

pepe
12-23-2005, 07:36 PM
I would say that with that small of track you will most likely need some rear steer,with these cars it doesn't take much at all there is usually enough play in the T-plate to give you a start and see if it helps you,start with very small amounts say.010 and go on from there if you start spinning out coming off the turns go back some.Remember only try one thing at a time,and keep track of how much you're moving things,this will help you know what works and what doesn't.If you don't already have one get a notebook and keep track of all the settings on your car,be as detailed as possible.Here is a link to the set up sheets I use,I think they are the best ones out there. http://www.classichobbiesraceway.com/modules.php?name=SetupSheet

jonnycash
12-24-2005, 11:10 AM
Pepe... Those are excellent setup sheets. I am going to start using them. Thanks

darkwing
01-16-2006, 09:05 PM
Does rasing your upper arms on your castor blocks up and down free up your car any ?Higher freer or lower ? And why thanks .

BigA
01-17-2006, 01:17 AM
I don't know about all you guys, but the right rear shock makes a HUGE difference how the car comes out a turn. Get you car setup the way to want then take right rear preload out of the shock until the car almost spins out in the turn - then go back and add 1/2 to 1 turn of preload. This will make the car a lot more free in the turn and can really help out a car that bogs in the turns. The previous tip and a lot of other good tips are on the Swift Racing Products Website, those tips have REALLY helped out my car. If you don't believe it, give it a try it in practice and look at your lap times.

Big A

darkwing
06-25-2007, 02:46 AM
Ok I got the car where its good in and through the center . But my car when it comes off the corner it wont drift out to the boards where I need it to be to run fast laps . I have to almost turn the wheel to get it to go to the boards . How do I fix it ? I tried to shim out the right rear "passanger side" is this wrong ? Thanks .

mc43
06-25-2007, 06:57 AM
shim out the left rear,shimming the right out will free the car

RPM
06-25-2007, 08:06 AM
shim out the left rear,shimming the right out will free the car

Yes that will give you more steering comming out but before you shim
add weight to the front left first.

Shim as a fine tune adjustment. :thumbsup:

swtour
06-25-2007, 08:27 AM
OK, this is something I thought I knew how to correct - but I've been struggling w/ a Gen1 car and 10.5 b/l on a flat 170 ft. asphalt track on foams.

CAR Pushes going IN and OUT - roll out really early and it'll go to the bottom in the middle but turns in way late. MOVING the wing right upto the rear window helped more than anything, but I think it's too close.

PINK REAR tires, Magenta Fronts.

12.6 on the LR corner for weight

RED/RED on the front springs with a little shim on the RF. STARTED w/ a RED RF tire, dropped to PURPLE, then MAGENTA..and stangely never really felt a change.

.063 TPLATE

GOLD LR spring/Blue RR spring.

1/2 degree rear steer (Black KSG slugs)

fairly slam nosed PROTO HD/MC, single element Buds wing...mounted pretty flat (and close to back window w/ flat plane about the height of the roof...or just a tick lower.

(Tried taking a little tweak out, and then dialing a little steering out - but the car didn't like that at ALL....felt jumpy loose in the middle that way.)

brian0525
06-25-2007, 09:24 AM
OK, this is something I thought I knew how to correct - but I've been struggling w/ a Gen1 car and 10.5 b/l on a flat 170 ft. asphalt track on foams.

CAR Pushes going IN and OUT - roll out really early and it'll go to the bottom in the middle but turns in way late. MOVING the wing right upto the rear window helped more than anything, but I think it's too close.

PINK REAR tires, Magenta Fronts.

12.6 on the LR corner for weight

RED/RED on the front springs with a little shim on the RF. STARTED w/ a RED RF tire, dropped to PURPLE, then MAGENTA..and stangely never really felt a change.

.063 TPLATE

GOLD LR spring/Blue RR spring.

1/2 degree rear steer (Black KSG slugs)

fairly slam nosed PROTO HD/MC, single element Buds wing...mounted pretty flat (and close to back window w/ flat plane about the height of the roof...or just a tick lower.

(Tried taking a little tweak out, and then dialing a little steering out - but the car didn't like that at ALL....felt jumpy loose in the middle that way.)

PUT YOU A .020 SPACER BEHIND THE LEFT FRONT AND IF YOU HAVE KSG HUBS SPACE THE RIGHT REAR OUT .100

pmsimkins
06-25-2007, 10:13 AM
Good suggestions above.

You could also or in addition try a pink on the left front and a magneta on the right rear.

67-4-fun
06-25-2007, 12:46 PM
just moving your rear pod to the standard postion instead of being off set will make a noticeable difference, I would try that first then try maybe some chassis rake, Best thing to do is try one thing at a time!!!! You may have a good setup just needs a little fine tune and just moving your pod could make that difference or just adding a little chassis rake. just my 2 cents, hope this helps!!

JP

RPM
06-25-2007, 02:26 PM
Good suggestions above.

You could also or in addition try a pink on the left front and a magneta on the right rear.

http://photos.hobbytalk.com/data/500/tide_racinglogo.gif


Yes....

The problem some racers over look is that you will be more consistent running the same type of tire compounds.

Try three pinks and one purple tire on the front right.
Adjust the car by moving weight around first to get the front to rear balance
corrected.
Next make chassis adjustments.

Making the right changes will increase your corner speeds.

swtour
06-25-2007, 03:54 PM
...I kept thinking it felt like a PINK LF might be the ticket, but I was so suprised that dropping from RED to MAGENTA on the RF didn't really change anything.

I was wondering if the PINK LF and maybe moving the battery forward to get it off the LR tire may have helped...

pmsimkins
06-25-2007, 03:59 PM
Moving the battery forward will make it tighter.

RPM
06-25-2007, 06:43 PM
http://photos.hobbytalk.com/data/500/tide_racinglogo.gif

Here's my Gen 1 soild chassis setup running 3 pink and FRight purple compound:

FLeft 29% FRight 17%

LRear 31% RRear 23%

60% Leftside weight

Front weight 46%
Rear weight 54%
FL/LR split 2%

This should get you in the right direction.
Good luck. :thumbsup:

Joey 3
06-25-2007, 10:20 PM
You could soften the right front. That just about always makes the car turn. Moving the battery forward always makes my car turn harder. Some times adding some camber will also help the car turn.

erock1331
06-25-2007, 10:31 PM
Car Pushes or Understeers (thanks to CW manual)
Slide Wing Toward Front of Car
Decrease Wing Angle
Remove Wedge/Tweak to Chassis Using
Stiffer Side Shock Springs
Softer Front Springs
Stiffer Center Shock Spring
Decrease Center Shock Spring Tension
Try Softer Front Compound Tire
Try Harder Rear Compound Tire
Move Battery Toward Left Side
Lower Front Ride Height
Raise Rear Ride Height
Move RF Suspension IN
Move RR Tire Away From Pod
Decrease Castor
Move battery back
Shim LF tire out
Move RF tire in

One method I used to free up a car was to keep making changes to get more LF weight % on the scales. The more split you run up front the more the car will turn. For instance a 10oz LF and 3.5oz RF will turn more than a car with 8oz LF and 5.5oz RF.

RPM
06-25-2007, 11:03 PM
Car Pushes or Understeers (thanks to CW manual)
Slide Wing Toward Front of Car
Decrease Wing Angle
Remove Wedge/Tweak to Chassis Using
Stiffer Side Shock Springs
Softer Front Springs
Stiffer Center Shock Spring
Decrease Center Shock Spring Tension
Try Softer Front Compound Tire
Try Harder Rear Compound Tire
Move Battery Toward Left Side
Lower Front Ride Height
Raise Rear Ride Height
Move RF Suspension IN
Move RR Tire Away From Pod
Decrease Castor
Move battery back
Shim LF tire out
Move RF tire in

One method I used to free up a car was to keep making changes to get more LF weight % on the scales. The more split you run up front the more the car will turn. For instance a 10oz LF and 3.5oz RF will turn more than a car with 8oz LF and 5.5oz RF.



http://photos.hobbytalk.com/data/500/tide_racinglogo.gif


erock1331 is right!

I used percentages as a guide to find your actual corner weights from the total vehicles weight. :thumbsup:

Benjie Wright
06-26-2007, 11:13 AM
I like this type of post a lot , racers helping racers. Not everybody hiding there car under a rag . (GOOD STUFF) keep it up guys./

Dan
06-26-2007, 04:23 PM
Car Pushes or Understeers (thanks to CW manual)
Decrease Center Shock Spring Tension


I'm not sure about decreasing center spring tension, though...
I've always found cranking it a little loosens the car up...
But then... well.. you know... that's me.... :drunk:

ud21
06-26-2007, 04:38 PM
I have found that sometimes on flat tracks that a softer center shock spring will give the car more steering on a lift, running a car wide open changes this. my 2cents

scott law
06-26-2007, 10:25 PM
Ok I got the car where its good in and through the center . But my car when it comes off the corner it wont drift out to the boards where I need it to be to run fast laps . I have to almost turn the wheel to get it to go to the boards . How do I fix it ? I tried to shim out the right rear "passanger side" is this wrong ? Thanks .

Check your toe in on the right front tire with the radio on and servo under power. Sometimes if you have right toed in it will not come off/out of the turn as good. Also, try moving the lr with .020 shims to the point it does not effect the turn in of the car.

RPM
06-26-2007, 10:27 PM
I'm not sure about decreasing center spring tension, though...
I've always found cranking it a little loosens the car up...
But then... well.. you know... that's me.... :drunk:

http://photos.hobbytalk.com/data/500/tide_racinglogo.gif


Yes it does add front bite at the loss of forward bite but I would make other chassis changes.

Changing the spring rate by cranking spring tention to increase the rate of the spring just adds to another problem.

You want to increase corner speed without the loss of forward bite off the turns. :thumbsup:

Dan
06-27-2007, 02:43 PM
Changing the spring rate by cranking spring tention to increase the rate of the spring just adds to another problem.


I believe I said 'cranking it a LITTLE'...
I wasn't suggesting trying to bend the T-plate with it.... :thumbsup:
We all crank a LITTLE preload here and there, to correct a problem.
If we didn't, there'd be no need for the threaded adjusters..
Over doing it, I agree, can just mask another problem area..

(btw.... howzabout sending me a copy of that fancy spreadsheet file?? :wave: )

RPM
06-27-2007, 04:46 PM
I believe I said 'cranking it a LITTLE'...
I wasn't suggesting trying to bend the T-plate with it.... :thumbsup:
We all crank a LITTLE preload here and there, to correct a problem.
If we didn't, there'd be no need for the threaded adjusters..
Over doing it, I agree, can just mask another problem area..

(btw.... howzabout sending me a copy of that fancy spreadsheet file?? :wave: )

http://photos.hobbytalk.com/data/500/tide_racinglogo.gif


I understand Dan what you saying.. a little perload is fine.
It was the word "cranking" that got me. ;)

I will send the program to anyone who wants to use it.
Send me you email address.

The racing mode spreedsheet file is here:
http://www.hobbytalk.com/bbs1/showthread.php?t=183534&page=2

The full setup sheet program with racing mode is to big to save here.

brian0525
06-27-2007, 05:09 PM
Ok I got the car where its good in and through the center . But my car when it comes off the corner it wont drift out to the boards where I need it to be to run fast laps . I have to almost turn the wheel to get it to go to the boards . How do I fix it ? I tried to shim out the right rear "passanger side" is this wrong ? Thanks .

Shimming the lft rear out will help this but if you can make your self get the wheel back to center earlier coming off the corner and drive the little hook out of it without having to turn right down the straights you will be faster!