car does donutes HELP!
12-24-2011, 11:17 PM
#16
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I got a duratrax evader. Put the mamba max pro esc and a castle 6900KV motor. I get going runs perfect once i start to reach around half throttle the car just starts doing donutes. I took apart the gear box cleaned it all, lubbed it up. I did realize something that shocked me, If i sit it up, hold 1 tire and run it full throttle 1 tire balloons pretty good. If i hold the other tire and run full throttle the other tire balloons pretty good if i hold no tires neither of them balloon really any. any information about this be very helpful!
12-24-2011, 11:21 PM
#17
LOL I was waiting for someone to mention that. why would that cause it to do donuts though? I had it in a rustler and ran fine....the evader and rustler are extremely similar accept the rustler just seems better built
12-24-2011, 11:33 PM
#18
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Then if you've run this before and have an understanding of the power I would check and double check the drive train. One side can have a bind and still balloon the tire when you hold the opposite one. Which is never a good thing for the diff. Best of luck.
12-24-2011, 11:34 PM
#19
Should I just tighten the diff alot so really both tires are forced to spin the same speed?
12-25-2011, 09:06 AM
#20
Tech Regular
yes! But don't be holding one tire while giving it full throttle It;s not good for the diff.
12-25-2011, 11:26 PM
#21
Alright. I was just holding 1 tire to see if i could feel a difference between each. Ill tighten it down really good and see if it still does it. The only reason I could think it does is 1 back tire starts spinning alot faster then the other. Ill try to get a video of it
12-26-2011, 12:24 AM
#22
wheel drive pin
You might want to check the drive pins that go through the axles and into the back of the wheels. They are common to break with lots of motor and when it does if the wheel is tight it will have some drive with friction but under hard axccelleration it will do circles. If you set the car on a bench and hold bolth tires give it a LITTLE gas and watch for one of the axles to spin while holding the tires. If one spins that is the culprate.
12-26-2011, 11:35 AM
#23
Alright so i narrowed it down and saying f it. I put my large off road dirt tires on it and the car flys and no donuts so one of the tires i put on it was causing it. they came off a old xtm nitro 4wd truck. so solved that problem now im having a loud grinding in my gear box. thinkin my diff was not causing the donuts but its still shot. I bought this car used and it was not in the best of shape. so ill look into getting a rebuild kit for it. or just buying a hole near gear box off ebay which ever is cheaper....I am just looking to get this car going and hopefully sell it local to finance my 4wd truck build....xtm baja outlaw....Planning on ditchen the nitro set up sticking my 4 inch mudders on it novak 5.5 550 ballistics motor and 2 40C 5000mah 2s batterys in parallel....still be at 7.6 volts or w.e but be like 80c 10,000mah battery ( : Just want to make a bad ass off road basher rip it in snow mud w.e if the xtm fails ill look into a 4wd roller and put all the electronics on that.
12-26-2011, 11:51 AM
#24
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12-26-2011, 11:55 AM
#25
I can't believe a thread that started out with " I got a duretrax evader " got so many responses lol. On a more serious note if your having this problem its would seem your diff isn't adjusted right and may be to tight, its just like a real car in the sense that if you do a burnout and 1 tire spins the car goes straight and if you have posi both tires spin and the car wants to go sideways. Just my 2 cents
12-26-2011, 12:05 PM
#26
Hey, I paid $15 for the car, came with a good body, 10t brushed motor, some esc, charger, 4500mah nimh battery pack and a body in near perfect condition. talk down on the car all you want but all of you know if you seen it for $15 you would of got it to.
as I stated though I solved the donut issiue it had to do with faulty back tires because I switched tires and no longer have the problem. now my diff just slips like crazy.
as I stated though I solved the donut issiue it had to do with faulty back tires because I switched tires and no longer have the problem. now my diff just slips like crazy.
12-26-2011, 12:19 PM
#27
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Hey, I paid $15 for the car, came with a good body, 10t brushed motor, some esc, charger, 4500mah nimh battery pack and a body in near perfect condition. talk down on the car all you want but all of you know if you seen it for $15 you would of got it to.
as I stated though I solved the donut issiue it had to do with faulty back tires because I switched tires and no longer have the problem. now my diff just slips like crazy.
as I stated though I solved the donut issiue it had to do with faulty back tires because I switched tires and no longer have the problem. now my diff just slips like crazy.
12-26-2011, 12:41 PM
#28
I can't believe you could even run that motor in a rustler. I tried a 4600Kv and all it did was overheat. On the original topic, that motor is a little much for a duratrax. Your most likely just "diffing" out. Got a video of it running?
12-26-2011, 01:24 PM
#29
Ill try to get one tomorrow. or later tonight. yeah its a bit much but gotta love it! I might try to find a better gear box traxxas or something to get for cheap and modify the rear end and mount that so it can handle it.
12-26-2011, 02:12 PM
#30
why don't you just use the rustler? What batteries are you running?