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View Full Version : Sliiiiiip and Sliiiiide! Losi XXXT Help please...


Gutter Ball
06-11-2001, 01:10 AM
Okay, I THINK I've tried everything I can think of to stop my beloved XXXT from fishtailing out of turns and everything I've tried = sliiip and sliide! :/ Real bummer! I am using pink springs, 35 oil, middle shock hole on bottom, third one in on top. I tried raising the front of my car and moving the battery back, no go. Maybe I was throttle happy, so I laid off until I was straight, gave it a quick punch and slid again. :( ARGH! I'm starting to wish I bought a T3. The steering is great though. I'm running totally Spec and my gearing was 88/18. Maybe I need new tires already? They've only been run 24 minutes total and the stubbles are a bit down. Help?

ammoace
06-11-2001, 01:21 AM
Does the rear of the car slide out if you gun it while pointing straight down the track? Might be one tire is "growing" more then the other. If so then adjust the diff.
Jerry

Gutter Ball
06-11-2001, 01:27 AM
Ammoace! That makes sense, but I seem to fishtail BOTH ways :/ After coasting through a hair pin, turn right, I punch and slide. Exit the course onto the straight away, turn left, punch and slide! :( I dunno why. Maybe I should just get new tires and stiffer foams...

Grizzbob
06-11-2001, 01:34 AM
Which tires are you using? Even in offroad, tires make a big difference in how your car or truck handles. Are you using some that are different from your competitors?

DJ BlendeR
06-11-2001, 01:43 AM
Well, easy enough, but didnt see you mention anything bout it b4, have you tried loosening your slipper? Back it off maybe a 1/4 of a turn or maybe even 1/2 a turn. I know my truck did too much sliding and i did that and it stopped. Also, you could try removing your shims in back to get 2 degrees anti squat, it says that it is supposed to help side bite. Also try adding and removing the washers under the ball studs for the camber links up front, I had two on mine and it helped my steering and stability, I am new at it, but hey, anything is worth a shot, and one of those is bound to help atleast a little.

I love them blue tires, I lifted the back of my truck and let em go full speed and let the tires barely hit the sidewalk, it left two blue patches on the concrete.

nsane
06-11-2001, 10:05 AM
Also depends on track conditions, try running tires without foams so they sit down more and can grab more side bite. As a matter of fact, in all the racing I've done, I don't recall EVER using foams inside an off-road tire. I consider them pretty much worthless :)

Gutter Ball
06-11-2001, 10:45 AM
Grizzbob: There's a Spec class and everybody has to run the same tires, motor and brushes. Everything else is what makes the difference.

DJ Bender: Ya know, no one even thought of that. I must have asked 10 different people. Figures it might be something easy...I'll give it a try and report back on Friday after we go back for some practice.

Nsane: No foams? I'm running with some pretty soft foams already...I'm just worried about tire flex(lots of turns and jumps) so maybe I'll soften the tires up a bit somehow. Thanks for all your help. Can't wait to stop sliiiiiiiiding!!! Now if I can only get more speed.....but that's another thread.

nsane
06-11-2001, 10:47 AM
Let me correct my last statement. Depends on the track pretty heavily as well. On a hard to moderately hard track I don't like foams, on a loose and I mean it would have to be 2 inches deep of loose dirt I might consider them :)

Gutter Ball
06-11-2001, 01:36 PM
DerekB: Thanks! My rear camber is -1/2, I will try a lower oil, slipper is turned back 1/2 turn, and I've removed the shims. Roll the throttle, you think I might be giving TOO much throttle too fast? Hmm, I've set my max throttle to 97 out of 125 on my XR3...okay, I'll set it back to max and try to slow down. Someone suggested adding some shock spacers to get a lower ride...would that be wise? Thanks for all your help everybody :) I don't wanna give up on her yet..

XXXER
06-11-2001, 01:57 PM
Derek hit it right on, with the throttle control, most people can make a bad set up remotely work, if they know how to drive it.

Because you removed the 2 shims under the rear pivot block, it will give you more forward bite, and less side to side: it now has 0 dgrees of Anti Squat, with the shims, it = 2 degrees, you can use the gold washer that you put underneath the front ball studs to get 1.5 degrees of A/S, that will get you some side-bite, and more forward.

35wt. juice is by far to stiff, try both 25 and 30.

1/2 turn on the slipper is quite a bit, you will find yourself tightening it a little more.

If you remove both of the washers underneath the front ball stud, you will give your car more agressive steering, with more washers, it is easier to drive.

hope this helps.

DJ BlendeR
06-11-2001, 04:43 PM
YEAH! Alright, sorry I have to celebrate that I was right for once on what to look at on the truck. WOOO! Ok sorry... :D Good luck on fri. I had to take my truck apart yesterday.. :( I am going to cali and need to transport it in my carry on. Has anyone ever clipped the outside and inside knobs of those kinds of tires? I read on losi's site to do that, it seemed to help a little bit.

SirSpeedy
06-11-2001, 06:18 PM
Alright X'er-

One more time.

Stock Losi pivot block has 2 deg of Anti-squat.

If you place the shims under the rear of the pivot block, you have 0 deg of A/S.

Shims under the front will yield 4 deg of A/
S.

XXXER
06-11-2001, 07:32 PM
AAAAAACK! I will never get this right!

Thanks for the heads up again Tim.

Gutter Ball
06-11-2001, 07:49 PM
Thanks for all the replies! Now I'm stumped by something else :) People have been mentioning washers under the front pivots. What does an extra 2millimetres do to steering? I checked all my vehicles and I don't have washers in any of them...except my B2, but that was weird because I had 2 on the right side and none on the left side :) I'll wait for some replies before I add/take away washers. Again, thanks all :)

DJ: Hmm, I don't know why you would clip them, but I just checked both my Spec trucks and well...the middle knobs are getting worn down pretty good, but the inside/outside ones are like new!!!

XXXER
06-11-2001, 10:21 PM
I do not understand your "Front Pivots" that you are talking about.

What I think you are saying, is this.

Take the pivot block, put it on, with out those wierd little spacer deallies, you have 2* of anti squat, now, when you take the spacers, and put them in the 2 most rearward holes, you now have 0* of Anti Squat. Now, if you put them in the most frontward holes(on the rear pivot block) You now have 4* of Anti Squat.

i hope that cleared it all up.

Gutter Ball
06-11-2001, 10:48 PM
Ooops! Not pivots, I meant the ball studs on the front steering blocks :) I know which ones you mean too, the shims that go under the tranny right?

DerekB
06-12-2001, 12:17 AM
Gutterball,

My immediate response to fish tailing out of a turn, is that you need to practice THROTTLE CONTROL. Learn to roll the throttle out of a turn instead of full wood.

Here are some other tips to help you gain rear traction:

1: Rear camber-make sure you have it as close to 0-degrees as possible.

2: 35wt oil seems extrememly stiff! I would try around 25wt in the rear and 30 in the front.

3: Loosen the slipper

4: Remove the anti-squat shims in the rear.

5: Roll the throttle! I know this is repetitious, but most of the time this is the problem. You may be able to change the EXPO on your radio to smooth out your throttle.

Don't make all the changes at once, but with the right combo, you'll be able to come out of the corners better! ;)

ammoace
06-12-2001, 02:04 AM
Ohh yeahhhh now I remember why I don't race.
;) Well that and no track in this two bit cow town! :mad:
Jerry

XXXER
06-12-2001, 11:24 AM
Yes, i was refering to the shims underneath the tranny, though i have no idea what ones you are talking about now...

I think you may be refering to the washer that is spaced in between the Caster Block, and the Axle carrier, Well, what i have to say about that it, run the washer at the top, when at the bottom, i noticed it was more aggresive in steering, a little quicker, but unpredicitable.

rcracer_xxxt_futaba
06-12-2001, 03:20 PM
I think its Throttle control and mabey gearing. Try 20/88. You wont have as much acceration, witch is good for spinning out. It really helps me on my track vs. So Cal RC. I run 87/21 on my track and 87/19 at So Cal, cause my track is more slippier than So Cal's Indoor, tight, clay track.

Gutter Ball
06-12-2001, 03:26 PM
Right now, I'm using 86/24 on a Spec motor(21 turn single). I'm not too concerned about heat, I just want speed!!!! Maybe I'm rolling my throttle a little too quickly. I was running 88/18 before, so maybe too much torque too. Thanks for all suggestions..