350Z Donuts

#1 11-21-2002, 03:46 AM

Hey guys, I just got the 350Z and a booster 4 ch. controller, a 2.6 motor, and #2 strut. Man, the thing is fast the problem is I just keep doing donuts..... I tried the soft tires ( the knobby grey bit-racer ones)...still donuts....any suggestions...or do I just try to work with it?

alpha1 · #2 11-21-2002, 04:17 AM

You just need practice. Also, what kind of surface are you running on?

#3 11-21-2002, 04:21 AM

Hey thanks for the reply, i'm just running on the kitchen floor

actofgod · #4 11-21-2002, 08:05 AM

First, the knobby gray bit racer tires aren't too soft. Get the real bit char-g tire set if you want softer tires. You can also gently scuff the gray ones, which will help a little. Make sure to clean the tires every so often.. dust and debris sticking to them will decrease traction.

Second, your problem is not always solved by more traction. When the car is going really fast you don't want it trying to turn at the same radius as when it's going slow or it'll spin or even flip. This is where proportional steering would come in handy. I use the really soft and squishy black tires that came with my Microsizer on the back, and knobby gray tires on the front.. but mine is going slower than yours (2.2 motor). Experiment with different combinations of tires on the front; you want them to have some traction, but enough "slip" to let the front end slide a little and make a wider turn at high speeds. The back end needs enough traction to stay firmly in place unless you're trying to do drifting. You just have to figure out if you're needing more or less traction on the front.

That's all the advice I can offer

BTW I always run on a kitchen floor too, but I bet the same concepts would work on other surfaces with different tire combos.

#5 11-21-2002, 09:15 AM

Hey thanks for the reply......would using different gearing give me better control?what about suspension? i've got the #2 strut on right now.

cowfish_29 · #6 11-21-2002, 09:30 AM

softer stablizers mean less tration for stearing which=less donuts.

#7 11-21-2002, 09:42 AM

i guess i was wrong, i thought the softer stabilizers gave more traction......i guess i'll play around with the suspension too...anyone use the springs from QFM?

thanks for the reply Cowfish

hogjowlz · #8 11-21-2002, 10:43 AM

springs seem like a good idea and they look neat but i dont think they really improve anything.

payaso · #9 11-21-2002, 02:52 PM

Quote:

Originally posted by hogjowlz
springs seem like a good idea and they look neat but i dont think they really improve anything.

They totally improve the performance. They give it independant sus. Which makes the car faster. Without the springs, it's just a teeter totter effect

silla

r.c.dealer · #10 11-21-2002, 03:06 PM

You might want to try and dust the kitchen floor off. My Castrol Supra Booster Bit with a

Handles like crap when the floor is dusty. When the floor is clean however the car handles great. Hope this helps

Sniper596 · #11 11-21-2002, 03:08 PM

Quote:

Originally posted by usagi20
Hey thanks for the reply, i'm just running on the kitchen floor

try running on particle board or some kind of wood that's not laminated. I get excellent grip on particle board, it is litterally impossible for my car to donut unless i use a drift axle or take off the tires. the car hardly slips on particle board so i recommend that if you plan on using a racing track or surface.

#12 11-21-2002, 04:49 PM

wow guys thanks for all the info......i think i'll try all of them.......I had a question, how is the acceleration with the

and

, compaed to

and

?

alpha1 · #13 11-22-2002, 04:10 AM

If you divide 12 by 30000 you get: .0004 If you divide 9.6 by 26000, you get: .0003. This number is how many times the axle will rotate for every revolution of the motor. The higher the number, the faster the acceleration. Gearing down a motor, higher gear ratio, will give you longer run times, better acceleration, but at a slower top speed.

#14 11-22-2002, 09:50 AM

wow, hey thanks for the formula and the reply......do you have any resolutions for donuts? using springs? harder front softer rear tires? cleaning kitchen floor? running on particle board?

alpha1 · #15 11-22-2002, 02:42 PM

I just re-read my post. The formula I gave earlier was not correct. The formula should read 30000 divided by 12=2500, this number is how many times the axle will spin per minute. If you divide 26000 by 9.6, you get 2708. So if you went with the 2.6 motor, your car will actually have slower acceleration but a higher top speed. Sorry for the earlier confusion, it was late last night.