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Wheelie Bar/Chassis Questions

Posted By: 6bblFLASH

Wheelie Bar/Chassis Questions - 05/30/10 12:15 PM

I`m having a small issue with what I assume is the wheelie bars,more than the actual chassis set-up.
Problem started with still being wheels-up for the 1-2 shift. So lowered the wheeliebars and stiffen the springs on them.
That works SOME of the time. Now if the front gets higher than say 30in`s the car goes hard left AFTER its reach max height.
If I keep the w/bars low and stiff I can avert the height/left issue but on poor tracks like yesterday I blow the tires off since it nevers get up on the rear. So I took spring out of the w-bars . Hook improved but after the weather and track changed ,more power more hook.
Off in the grass we went.
I have video of yesterday{no I can`t figureout how to post} And what it does,leaves straight and square.After it reaches max height,goes left quickly.
Looks alot like a pulling tractor when he jabs one brake to correct on 2-wheels.

Attached picture 6010256-Thompson09`#2.jpg
Posted By: Anonymous

Post deleted by Defbob - 05/30/10 03:02 PM

Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/30/10 03:16 PM

Ladderbars,coilovers,single adj. Aldon? shocks.
90/10 fronts,otherwise stock susp.
Not shooting for the moon,but want some airtime.
When it pulled big wheelies it went straight but 2nd gear was a constant issue.Smashed the pan several times trying to shift before it came down.
Lowered and stiffened the w-bars and that worked till it started spinning.
Posted By: Anonymous

Re: Wheelie Bar/Chassis Questions *DELETED* - 05/30/10 03:46 PM

Post deleted by SUPERSTOCKRACER
Posted By: Anonymous

Post deleted by Defbob - 05/30/10 03:58 PM

Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/30/10 04:00 PM

Well I don`t think its just that simple. Are you saying of the 1,000`s of cars running w-bars,we ALL have our heads up our a-s?
My car has over 50% weight on the rear tires and makes good torq.Your car is a heavy automatic.
Apples to Oranges.
Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/30/10 04:19 PM

Bar is in lowest hole,already limited some travel.
Will try more.
Next set of tires will be smaller and take out some hook.
Posted By: Greg

Re: Wheelie Bar/Chassis Questions - 05/30/10 04:20 PM

Dennis,

I would pm bondo bob or call him. I think he could help you out with whatever is causing your problems. some double adjustable afco's would help in tuning. I would call and setup a visit to his shop to check things out and maybe a trip to the track to help you tune on the car.
Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/30/10 04:22 PM

Good advise,I`ll consider that
Posted By: Anonymous

Re: Wheelie Bar/Chassis Questions - 05/30/10 04:59 PM

i wasnt going to reply.should have gone with my gut.
Posted By: acme383

Re: Wheelie Bar/Chassis Questions - 05/30/10 10:46 PM

Quote:

i wasnt going to reply.should have gone with my gut.


superstockracer,
here's the video you've been looking for. now you can change your signature!

http://www.youtube.com/watch?v=2_OXcw0eqVI
Posted By: MR_P_BODY

Re: Wheelie Bar/Chassis Questions - 05/30/10 11:03 PM

Quote:

Good advise,I`ll consider that



Up your rear tire pressure a 1/8 pound then check it
again... dont try to dead hook... if you get UP on
the tire some it'll 60' better and the front wont climb
as high..... DONT try steering the car with the WB
you can mildly assist it with them
Posted By: Anonymous

Re: Wheelie Bar/Chassis Questions - 05/31/10 03:41 AM

Quote:

Quote:

i wasnt going to reply.should have gone with my gut.


superstockracer,
here's the video you've been looking for. now you can change your signature!

http://www.youtube.com/watch?v=2_OXcw0eqVI



who the heck are you?
Posted By: Comp Chassis 2

Re: Wheelie Bar/Chassis Questions - 05/31/10 05:01 AM

Have you tried staggering the height of the bars from one side to the other , most faster cars need one wheel higher than the other to keep from driving right on the bars. driving left I would say to much preload in rear suspention. Every car is different so its just something to ponder.
Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/31/10 01:16 PM

Quote:

Have you tried staggering the height of the bars from one side to the other , most faster cars need one wheel higher than the other to keep from driving right on the bars. driving left I would say to much preload in rear suspention. Every car is different so its just something to ponder.



W-bars are level now,right side pre-load was what I was thinking too.
Was on my list of things to check over,thanks

Attached picture 6011924-Thompson09`.jpg
Posted By: B G Racing

Re: Wheelie Bar/Chassis Questions - 05/31/10 01:26 PM

We had a similar problem years ago,and tried everything to correct it.We finally found that the chassis was flexing(twisting)we added a few more stiffening bars under the car at the frame connecters and ladder bar cross member and the problem went away.
Posted By: Anonymous

Post deleted by Defbob - 05/31/10 03:16 PM

Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/31/10 04:40 PM

Heres a few shots

Attached picture 6012346-6012309-dennyatMagnolia1.jpg
Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/31/10 04:41 PM

#2

Attached picture 6012349-6012314-dennyatMagnolia2.jpg
Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/31/10 04:41 PM

#3

Attached picture 6012351-6012317-dennyatMagnolia3.jpg
Posted By: MR_P_BODY

Re: Wheelie Bar/Chassis Questions - 05/31/10 05:15 PM

I see your riding your brakes... check to see if
you have a leaking axle seal
Posted By: fourgearsavoy

Re: Wheelie Bar/Chassis Questions - 05/31/10 05:18 PM

Quote:

I see your riding your brakes... check to see if
you have a leaking axle seal



That would be kind of unlikely this being a stick car his right foot would be on the gas and left foot would still be somewhere "left" of the clutch pedal.
Gus
Posted By: MR_P_BODY

Re: Wheelie Bar/Chassis Questions - 05/31/10 05:31 PM

Quote:

Quote:

I see your riding your brakes... check to see if
you have a leaking axle seal



That would be kind of unlikely this being a stick car his right foot would be on the gas and left foot would still be somewhere "left" of the clutch pedal.
Gus



Well it sure looks like the brake lights are on...
might be the sun.... OH WELL
Posted By: 6bblFLASH

Re: Wheelie Bar/Chassis Questions - 05/31/10 06:58 PM

Quote:

I see your riding your brakes... check to see if
you have a leaking axle seal




Good eye Mike
Tail lights are wired in with fuelpump.
One less thing to remember when night falls.
Posted By: Chassisman

Re: Wheelie Bar/Chassis Questions - 05/31/10 08:11 PM

Quote:

#2

This picture tells the reason the car turns left. Notice the drivers side tire looks less loaded than the passenger side tire. Your wheelie bars are either unloading the tires OR you have too much pre-load...either on purpose or accident. I'd pull the shocks off and have them dyno checked to ensure you dont have a valving issue.While the shocks are off make sure the suspension goes through it's arc with out binding. Re-check EVERYTHING. For a band aid fix for now....limit the front end travel more.That "airtime" is causing some issues too.
Posted By: Anonymous

Re: Wheelie Bar/Chassis Questions - 06/01/10 03:02 AM

Quote:



who the heck are you?




One of the many people that wonders why you'd put something like that in your sig just to start crap, and then don't even know the difference between "your all talk" and "you're all talk"......

Attached picture 6013844-cars.......009.jpg
Posted By: Comp Chassis 2

Re: Wheelie Bar/Chassis Questions - 06/01/10 05:27 AM

Pics of car looks like it leaves pretty straight and flat! Bet half turn of preload fixes it. Wouldnt say you have any chassis issues that some small tweaks wouldnt fix.
Posted By: B G Racing

Re: Wheelie Bar/Chassis Questions - 06/01/10 11:25 AM

I would never try tuning the chassis based on the pictures.The first thing I would do is paint the wheelie bar wheels and see if one is contacting the dragstrip longer than the other,this will tell you which side is loading harder.Then try adjusting the bar height,if that don't work,try adjusting the shocks,next would be preload.If all else fails look for flexing or twisting or something wrong in the suspension componants and attachments as well as correct measurements and alignment.
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