wheelie bars

[ss4]

Not planning to run wheelies, but if I find the need I would like to have the mounts on before painting.  would anyone share photos of what they have done.  I am looking at a 3 bar design the would have 2 bottom bars and 1 top bar.  I am concerned however if a bar were to break it would come through my back.  thoughts?

[ricci32]

Check out Dragster supply on line they sell a awsome kit at a great price give David Beard a call.

[masracingtd1167]

I would think you would want to do it the opposite way with the single bar on the bottom . I also think you would be better off starting out with the bar on the car . You can always take it off later .

[coupemerc]

FWIW I agree with Bill's statement above. That is the voice of experience speaking. You want the two bars on top and it is best to go out with the bars on the car. I have almost flipped one over backwards without bars. Not fun! I'll let Roo have the last word...

[ricardo1967]

ss4,

Please watch this video...



I do have the wheelie bars, an old two-wheel design. It didn't help at all that I left them in the trailer!

[Keven]

We chose to go with single top bar and two on the bottom with a wide stance at the wheels. The tabs on the chassis are 1/4" thick with 3/8" grade 8 bolts, bars are  1 1/4" .065. Very stout and believe me we use them every pass, never had any issues with this set up.

[George]

I depend on some flex in my wheelie bar setup. If they were too rigid the car would lift the front end, hit the bars and then drop the front and upset the car. Length, angles and pipe size will determine how the wheelie bar works, along with car balance/ballast.

[rooman]

I use a three bar single wheel package with the single bar on the bottom where it is in tension. Weld clevis and 3/16" tab at the chassis end, about 6' from the frame to the wheel. Most of mine have 1.125" upper bars and 1.125/1.00 for the lower with the 1.125 on the chassis end and the 1.00 on the slider. I usually use the same McKinney adjuster as the big show guys as it can quickly be fine tuned on the start line without a wrench. As George noted some flex in the bar will stop the car shocking the chassis if it hits at the step.





Here is the same basic package on an altered.



Roo

[GlennLever]

This is what Roo Man did on mine. It was done after the body had been built because I was going faster. I originally ran without one.

The first shot is actually at the same track, but at a different time.

The second is at our local track

[ss4]

thanks for all the great input.  so are the mounts single or double shear?  hard to see in the photos

[GlennLever]

Single attachment point, double on the wheely bar

[rooman]

thanks for all the great input.  so are the mounts single or double shear?  hard to see in the photos

I use a slotted weld clevis so there is no adjustability of the lateral wheel location to get messed up.

Scroll down this page to see them at the bottom of the third photo.  http://www.neilparks.com/chassis/tubing.htm

Roo

[Totally T]

This would be toooooo much flex.

[slingshot383]

Single top bar is a no no, if the mount ever broke, you will get speared!  Two upper bars, single lower, length about 1/3 of wheelbase, bottom attach point even with lower frame rails.

[Van]

Take a look at the pic (red car) in Roo's post. I could be said that if one or both top mounts broke the driver could also be injured. To make a truly safer set of bars, you would want to move both upper bars out to the widest possible point on the chassis. mounting the lower bar - bars- even lower than the driver to more avoid any injury there. remember in a crash the lower bar might not be in tension.  We will be keeping ours the way they are. I am not telling anyone how to make their bars as anyone who does so could be making a big mistake. Keven just posted a pic as was asked for by the OP. Keven nor I would want it to be a "you should do it this way" reply
 In line with the driver being injured by bars entering the drivers compartment, I agree with SFI making changes to wing mounting over the drivers head. Perhaps wheelie bar mounting will be next in line for change.