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Author Topic:   wheelies in a Victory?
donjuan12
Dirt Full Roller

Total posts: 38
posted July 06, 2004 08:37 PM  
I'm posting this for a buddy of mine who has a brand new Victory mod from JR Motorsports. His problem is that it wants to pull the l/f 2 feet off the ground going down the straights. It is a 4b/zlink car and he has a j-bar instead of a straight bar. His springs in the rear are 250 on the left and 225 on the right. We already raised both spring rates 50#. Springs are on the front of the rearend on the left and behind on the right. Car is impossible to drive!! Any advice??

badfastjr
Dirt Maniac

Total posts: 193
posted July 06, 2004 09:37 PM  
this may sound carzy but, you might try stiffening the lf spring. The spring rate is the same for compression and extension. if you stiffen it it wont allow it to stretch as much and it may help keep the lf from coming up so high off the ground.

jammin
Dirt Administrator

Total posts: 6243
posted July 06, 2004 09:41 PM  
jammin is right on with the longer lower bar on the lft rear. Just did this with mine and it made a huge difference.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted July 07, 2004 09:52 AM  
double posted

[This message has been edited by dirtbuster (edited July 07, 2004).]

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted July 07, 2004 09:53 AM  
What are the lengths of the bars on the car now? What are the angles? IS the RR spring on the BC or on the clamp to the housing? How much shock travel are you getting on the RR. Do you have a lot of lead mounted high in the car?

Taking angle out will help keep the LF down but may also hurt your bite. Just keep in mind you might have to compromise a little.

hamer36
Dirt Maniac

Total posts: 196
posted July 07, 2004 10:55 AM  
put the RR spring on top of the rear

mod70
unregistered Total posts: 196
posted July 07, 2004 04:06 PM           send a private message to hamer36   Edit/Delete Message   Reply w/QuoteBBBBBB
Why is he wanting to pull wheelies? If the car is fast and driving well, why change a good thing? Worry about impressing people by being fast in the turns. Scr*w the weelies.
(Sorry, the whole 3 legged dog thing just for show is getting to be a pet peeve of mine. No offence intended.)

zeroracing
Dirt Forum Champ
Total posts: 1875
posted July 07, 2004 04:14 PM  
i say run on 3 wheels if you can, save money on tires.
just joking.
make the car drivable wheather its on 3 or 4 or 2 wheels.

donjuan12
Dirt Full Roller

Total posts: 38
posted July 07, 2004 04:32 PM  
He's not wanting to pull wheelies. Thats why were trying to fix it. He has both bars on the left as low as they eill go in the mounts. I will try to get the angles for you.

donjuan12
Dirt Full Roller

Total posts: 38
posted July 07, 2004 04:33 PM  
How long of a bar did you put in to fix it?

mod70
unregistered Total posts: 38
posted July 07, 2004 07:17 PM           send a private message to donjuan12   Edit/Delete Message   Reply w/QuoteBBBBBB
Ya know, I really need to read these posts better, I thought you said he wanted to do it. My bad. (just ignore me)

jakestevens
Dirt Full Roller

Total posts: 68
posted July 07, 2004 08:01 PM  
I don't know what the car is doing in the corner, but sounds like you should raise the LR link bars. I know that this will help with rollsteer in the corner. Having the bars on the LR lower than the right side will tighten the car up so much(ON THROTTLE) on the straightaway that the front of the car wants to raise. What does everyone think about this? I'm curious

racer17j
Dirt Forum Champ
Total posts: 5390
posted July 08, 2004 04:51 PM  
Raise the LR trailing arm to stop it from doing a wheelie?
That kinda goes against anything I learned about a 4-bar, but everybody has there own theory and the only way to see what it does is trail and ERROR...
I am thinking the wheelies are casused from the RR being behind the rear-end?Are both rear springs floating on a birdcage?With the LR in front and the RR behind i would think this would drop the RR out when you accel casuing the LF to come up.

[This message has been edited by GRTWallbanger (edited July 08, 2004).]

awang
Dirt Newbie

Total posts: 1
posted July 08, 2004 08:19 PM  
Put right upper bar forward instead on Z'd will help hold front down some.


44nymod
Dirt Maniac

Total posts: 120
posted July 08, 2004 08:28 PM  
I agree with racer17j give Randy at JR a call, he knows his stuff and wouldn't steer you wrong especially with one of his car's. Alot of his car's are winning on different track conditions. Don't take this wrong but don't bash until you give the source a chance to help, but be ready to give him all the facts of the car. I would have scale sheets ready with measurements.

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