If you don't want to break T-bars dont hit stuff hard...

Speedmerchant Rev. 3 setup ?'s
 

Anyone have a decent asphalt (smooth, high bite) setup for the Rev 3??

Wilde

Thanks for the replies and keep them coming I will try all. My first thought was the battery but I think motor contact may be it but I may just be overlooking something. If I can fix it I will share the results. Thanks again.

carpet knife finally arrived, red edition, anyone wants to give some setup tips for the CK? thnx...:cool:

highwayman:

Do the chassis prep...(sand & glue)
Before you do anything else....

It takes very little CA to do also.

CRC - CK
 

Mr.Highway man has the first Carpet Knife in P.I. (Philippinies), I'm drooling. . . i'm drooling!!!!!!

See you on the tracks Sir!!

doc lem...

we ran last thursday night at rockwell, with a 9 double motor, it was really fast and the handling was pretty good.

tres...

thanks for the advise, we put C.A. around the chassis and other componets, unfortunately, we didn't sand the edges, was too excited to build the car... :D :D :D

Proper Gearing
 

Hi, I am new to 1/12 scale racing and I am a bit confused on how to gear my CK3.1 Guys at my local track use 17T 48 pitch pinion on a 75T spur on a 9turn double Orion Core Mod Motor. I asked them how they come up with the gearing and they seemed to forget. How do you really determine the correct Pinion to use on your motor with 1/12 cars. Any info will be greatly appreciated.:)

FATBOY JOE
 

Sir,
they come up with the spur gear, pinion combo by using the rollout formula.

Rear Tire Diameter x Pi (3.14) x PINION (number of teeth), then DIVIDE by the SPUR (number of teeth) = ROLLOUT

if stock 40-43 and rollout, for mod should be much lower!

see you soon at the tracks with your 1/12


"sorry for the mistake of saying to gear up for mod, i lost my head somewhere while replying to the post at 3am here, manila time!"

(Stupid me! SORRY)

FATBOY/HIGHWAYMAN:like whatthe guru's said- gear down for mod

Whoa dude-- You don't wanna gear up for mod, you gear down..... If 40-43 is good for stock you will want maybe 30-33 for mod.......

How many packs would a set of foam tires last on an indoor carpet track? I'm interested in getting a 1/12 scale car but I don't want to spend loads of money on the tires :rolleyes: .

I would gear down, (lower rollout) for a mod motor.

Tire size (mm) * 3.14 Divided by gear ratio (spur divided by pinion) = rollout.

Example: Gear ratio = 100 spur Divided by 27 pinion = 3.703 to one

45 MM tire * 3.14 = 141.3 (tire circumfrence)

141.3 Divided by 3.703 = 38.158 MM of travel of the car for one rotation of the motor.

Rollout = 38.158 mm



I think you would get about 5 to 15 races out of a set of tires. Driving style, compound, quality of tires,how often you true them...............

I am on my second set on my Carpet Knife, Bought it in January and only race stock.

Bodies and Tires are what you will go through the most. I have also broken about 4 bumpers. I just bought my second body.

Help this helps.

bodies and tires only last a few weeks. a lightweight body is literally a lap faster than a heavyweight, and they last just as long (the heavyweights crack really easy for some reason).

I'm curious as well, I just finished building my Bloody Knife a few days ago :D.

What are some of the bodies that the professional 1/12th scale drivers are using?