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Old 07-01-2008, 02:25 AM   #1
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Default M18 spins out after i let go of throttle...

yeah i have a front oneway diff

and a rear balldiff

also ceramic nitride bearings =D

and cvd's all around... with a s3102mg servo


but somehow it spins out after i apply full throttle.. its been like that since i got it so i thought if i changed my bearings it would get rid of it but apparently not..

would putting a balldiff in the front resolve this issue?
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Old 07-01-2008, 02:51 AM   #2
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When you let off, a one way will give more initial steering. A Ball diff up front would help. However, I think even more is a tire issue. Whats your current treads?
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Old 07-01-2008, 03:48 AM   #3
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possibly to much drag brake
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Old 07-01-2008, 04:38 AM   #4
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I am running xray tires...

im not quite sure since i bought it used...

it was a showcar from E.I.T.S

anyways i dont think its the tyres.. because i put electical tape on it and it still does the same thing!

also heres some more info...

well i was messing around the the steering and to allign the car i have to put some bias to the left

i realised that when i do this then the car spins out to the left... and if i do the same to the right it spins...

i tried to re-adjust the servo to make it even but i always end up with the same result...

so are you sure that a frontball diff will eliminate this issue? its driving me crazy...


also i am running a brushless system...

4400kv 380 sized motor...quark 33a universal ESC and a spektrum radio (losi dsm)
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Old 07-01-2008, 04:54 AM   #5
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Quote:
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possibly to much drag brake
+1
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Old 07-01-2008, 04:56 AM   #6
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Ianyways i dont think its the tyres.. because i put electical tape on it and it still does the same thing!
that just accentuates the problem
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Old 07-01-2008, 05:24 AM   #7
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oh yeah it could be drag brake

because when i let go of throttle the rear wheels stop immediately...

i dont know how to prevent this...

i have ceramic bearings which should spin really well

any suggestions? =]
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Old 07-01-2008, 05:43 AM   #8
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Quote:
Originally Posted by SN33KY View Post
oh yeah it could be drag brake

because when i let go of throttle the rear wheels stop immediately...

i dont know how to prevent this...
Like maybe re-set the drag brake silly
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Old 07-01-2008, 06:35 AM   #9
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Quote:
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I am running xray tires...
anyways i dont think its the tyres.. because i put electical tape on it and it still does the same thing!
I will be honest, the stock Xray tires aren't the highest grade for traction. What surface is this on? Are you using any traction compounds? Electrical tape will give you less traction, hence why people use them for drifting.

Does the Quark Universal have a drag brake setting?
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Old 07-01-2008, 02:39 PM   #10
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Quote:
Originally Posted by Mini_Me View Post
I will be honest, the stock Xray tires aren't the highest grade for traction. What surface is this on? Are you using any traction compounds? Electrical tape will give you less traction, hence why people use them for drifting.

Does the Quark Universal have a drag brake setting?
Right, tires are pretty much THE most important part of a car's setup, so it's very important to have the right ones for the surface you're running on. Also, about one-ways, if there is any kinid of imbalance in the car, or if you just don't have much overall grip, then a one-way is really not a good idea, as it will only exaggerate the problem, & on less than high-grip surfaces, not having any braking action in the front will SERIOUSLY unbalance a car the moment you try to turn when off throttle. So if you can't get alot of grip regardless of the tires you use, then I'd DEFINITELY take out the one-way & use a front diff(but play around with different tires first, if you're looking at rubber tires only, try something like an HPI medium front & medium-soft or soft in the rear).....
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Old 07-01-2008, 06:18 PM   #11
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get rid of the oneway. not only is it causing your handling isuue, but it will tear up your axles like a horde of fat people in a twinkie factory.
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Old 07-03-2008, 10:39 AM   #12
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Examine the left to right balance:
Balance the car on your finger or on a pen top. That is your balance center. Ideally, it should be in the middle of the car, not offset to the left, not offset to the right.

In addition to balance, it sounds like you need to readjust your brake settings.
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Old 07-18-2008, 11:21 AM   #13
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if you're not sure how to set drag brake on your radio or speedo you could try adjusting your throttle trim until the car just barely stays put without crawling froward when you let off the trigger.
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Old 07-18-2008, 12:03 PM   #14
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I would double check the gear boxes for friction points.....I use a rc18 ball diff in mine and there is some tweaking needed to free everything up...but I suspect even a xray diff with tight gear mesh would cause a drag...one ways are notorious for spin outs if there is brake action
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Old 06-08-2009, 04:14 AM   #15
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lol yeah it was the dragbrake, sorry for the late reply hahahah

all good now,,, actually sold everything off.. selling the xray m18 aswell.. if anyones interested, check my threads
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