Anyone here got a good stock setting to throw into a Pit wizard for 12L3 using an Atom?

CRC CARPET KNIFE -i cant keep my right rear tire on the ground when making right turns. turning left is fine, when turning right the car whips around so fast it will make your head spin. it wasnt spinning out-more like making a tight bat turn. while doing so you can hear the inside rear tire lifting and spinning. i spent the better part of the day at the track with people much more expierienced than me trying to help me out-we tried everything. tweak is fine,brand new wheels,diff,bearings,dampener tubes-i mean everything we could change or adjust we tried. no luck. the only thing i could think of to try(ran out of time) was changing the front springs. i was thinking that if the left front spring went flat it could let the right rear tire lift when turning right.has any one else seen this before? could bad front springs cause this? what about tweak springs?

Sean,
Have you removed the tweak springs, and damper tubes to make sure there wasn't anything binding in the pivot?

If everything is moving freely, try a little more preload on the tweak springs. This will help if keep the tire from hiking up if you put a little more preload on the tweak springs.

As far as turning so tight I would suggest that you don't have the weight balance set right, but you mentioned the tweek was checked. Hmmm.... Have you checked that the front wheels turn the same amount in both directions. Maybe the end points in your radio just need to be adjusted to get even turn.

I hope this will help with the problem.

tried that stuff, checked the radio settings. in fact the car tracks perfectly straight and turns equally in each in each direction untill i apply power. then it will turn impossibly fast when i turn just a little to the right. at the end of the day i even tried tightening way down on the right tweak spring and the right rear would still lift off the ground. this is why i think it might be bad springs

Changed the wheel / diff bearings?

sands:-

diff,bearings

so yes, he has!:rolleyes:

Sean
 

"Fine until I put power to it" Sounds like Diff to me too.

1. Tweak is perfect ?

2. NO binding in the rear pod ?

3. Diff clean and smooooooth ?

4. Rear wheels spaced exactly the same from the center ?

5. Tires the same diamater ?

6. Front springs the same ?

7. Rear ride height spacers the same on both sides ?

8. Even tire sauce ?

9. Front wheels rubbing at full steering ?

10. Front wheel bearings the same ? (not too tight?)

If not any of them, I give up. It sounds like the steering is coming from the rear, but you never know.

David Root

First things I would check:
1. Tweak is perfect
2. Tires are not big, meaning, they have been trued to racing height
3. Ride height not over 4mm, especially in the rear
4. Tires not hitting body
5. Tires are same size
6. Endpoints are set perfect from your radio. Make sure the car turns a circle the same size both left and right.

Re: Sean
 

everything listed above has been checked. the car is brand new-at first i was running a stealth diff same problem-i just instaled the CRC diff which is smooth as silk,so are the brand new bearings.the only thing i havent done is true the tires but thats not the problem.it did the same thing with the kit tires. i put new ones on,then i tried rotating them-same thing. i have to get to the track and try new springs-believe me guys we tried everything. it had some seasoned racers scratching their heads.
if i went full out down the straight and turned left-no problem. do the same thing heading back down the next straight the car would hook right so fast that the inside rear would lift and spin. the more i think about, the more i am convinced that either the right rear tweak spring is shot,the left front or a combination of the two. i just seems odd because its a brand new car.
the other thing that occured to me is that there is talk of inconsistancy in AE's dynamic front end parts.that in combination with a couple of bad wrecks.i dont know. tweak,turning radius,radio settings-it all checks out ok:confused: :confused: :weird: :weird: :confused: :confused:

4WD 1/12 Scale Pan Car
 

Hi everybody,I am new to rctech.net so I apologize If I have posted my question in the wrong way etc.Just wanted to ask why doesn't anybody make a 4wd 1/12 scale pan car.I've read most of the rules I have found in the Internet from IFMAR or ROAR sources and they don't seem to prohibit 4WD.In the past I was familiar with some Kyosho cars that used 4WD chain drive,so how come no one tries it in belt drive form?
Thank you in advance for your answers

here you go, 1/12 4wd

1/12 Touring Car MR-4TC MiNi (Part#MRTC-MD)

Introducing Yokomo's 1/12 Touring Car MR-4TC MiNi. Yokomo's main goal with the all-new MR-4TC Mini is to put the 'fun' back into R/C.

Essentially a shrunken version(1/12 scale) of the World Championship and Multi-National Championship winning 1/10th scale MR-4TC, the MR-4TC Mini features a shortened carbon graphite chassis, narrowed double wishbone suspension, full ball bearings, and a Mini-Stratus body. Utilizing a 4 cell battery configuration for reduced drive train and motor wear, the MR-4TC Mini also features a race-proven 2 belt drive system with front and rear ball differentials for full-time 4WD grip on all types of surfaces. Take a break from the intense competition of touring car racing and enjoy a fresh does of R/C fun with the new MR-4TC Mini. Select from a wide range of hopups currently available for the MR-4TC to customize your MR-4TC Mini into the ultimate R/C fun machine.

Part# MRTC-MD
Description: 1/12 Touring Car MR-4TC MiNi
List Price : $345.00


Description


FEATURES
Drivetrain: 2-Belt 4WD System
Chassis: Carbon Graphite Flat Chassis
Upper Deck: Carbon Graphite
Suspension: Double-Wishbone Independent
Battery Plate: Carbon Graphite
Hub Carrier (Front): 5 deg Caster
Hub Carrier (Rear): 2 deg Toe-In
Motor Mount: Aluminum
Differential (Front): Ball Differential (Lightweight Molded Outdrives)
Differential (Rear): Ball Differential (Lightweight Molded Outdrives)
Center Drive: Direct (Optional One-Way Available)
Driveshaft (Front): Low-Friction Universal Type
Driveshaft (Rear): Low-Friction Universal Type
Shocks: Molded Composite Oil Filled
Springs: Stainless
Spur Gear: 48 Pitch 78 Tooth
Pinion Gear: 48 Pitch 26 Tooth
Ball Bearings: 14 Precision Ball Bearings
Screws: Hex Allen Head
Tires: Slick Tires
Wheels: Aero-Dish 24mm Wheels
Body: Mini Stratus Body (Decals & Masking Included)

DIMENSIONS
Overall Length: 351mm (w/ Body)
Overall Width: 170mm (w/ Body)
Overall Height: 105mm (w/ Body)
Wheelbase: 208mm (w/ Body)
Internal Drive Ratio: 2.200
Full Weight: Approx. 1255g





SETUP'S
Gear Ratio Chart

RECOMMENDED ITEMS
FOAM TIRES

PARTS LISTS
MRTC-MD Parts List (PDF)

Complete Parts List


yes its a TC but as for pan car,thats what they are all about-2wd.
trying to make them 4wd would only slow them down and they would gain anything from it. 1/12 handle like they are on rails to begin with(well,most of the time:lol: ).

sorry,still havent figured out how to attach pictures.heres the link.

http://www.yokomousa.com/index3.htm

Long time ago( around '85) Hirobo( they make helihoper and boat now) did has a 4WD belt drive 1/12 pancar,it looked like a bigger miniRS4.

1/12 scale 4WD pan car
 

Thank you for your replies sean&caveman.I don't really think that a 1/12 scale 4WD car would be necessarily slower.If someone designed it in such an integrated way that it weighted a little more than a conventional car,you would have a car that would not only attain higher cornering speeds,because of the increased velocity that it could carry,but also be more forgiving,especially in outdoor tracks,where track humidity and generally conditions(even the smallest ammount of dust on the surface alters signifficantly the feel of a short-wheelbased-high power to weight ratio car such as a 1/12 scale racer).I even think that the slight increase in weight would also increase the stability of such a sensitive to even the smallest track irregularities car.You might have to deal with slightly greater inertial forces when accelerating,on the other hand you would be able to accelerate harder due to 4WD traction.
I would also like to ask if 4WD is prohibited from 1/12 scale racing by any sanctioned organisation such as IFMAR or ROAR.
Are underbody diffusers and tunnels prohibited?I read a thread some time ago with a guy saying that some organisations have prohibited that.Is that official?In the IFMAR rules I found through Internet(or an abstract of them-I dont really know-I can't find an official site containing ALL the rules-what's up with that?Shouldn't we all be able to have every reg available online?)there doesn't seem to be any limitation.
Thanks in advance for your replies.

you would have to fit it all under an approved cheesewedge body :lol: