Single wheelie bar

Doug Estabrook · 05-27-2009, 08:12 PM

Saw a picture of an A/SA Nova stocker at Maple Grove last weekend that had a single wheelie bar on it (car was built by Ken Keir). What's the advantage of that vs. a pair?
Thanks ahead of time,

Doug

Bill Grubbs · 05-28-2009, 06:48 AM

Now, this is my opinion only .

Safety...Have you ever seen a double wheel wheelie bar break or bend just one tube? It gets ugly real fast. At the Memphis Nat. in 2007 A. Bertozzi "lost" one side of his wheelie bars, and crossed the centerline between the tree and the 60' cone. He almost landed on the car in the other lane.

Now, when a single wheel wheelie bar is designed correctly and a tube breaks you just come up higher (depending on the car it could be significantly higher). When the integrity of one of the three tubes is compromised the other tubes just fold up (if you are using heim joints).

There are some other minor benifits, but safety is the biggest on for me. I love my wife, and want to keep her around as long as I can.

Bill

Dragsinger · 05-28-2009, 07:52 AM

The note from Bill seems reasonable to me. I also have begun to see a few of the single bars. My question, with a 12 bolt rear or other rear with cover, how is the bar attached/centered on the housing? Who is building or selling as a kit?

Bob Pagano · 05-28-2009, 10:58 AM

I have seen this one but there must be more.

https://www.appliedracing.net/produc...9c2e240fb0e74a

Bill Grubbs · 05-28-2009, 11:34 AM

The bottom mount on our wheelie bars is for the single tube. It was designed this way since it is in tension, the two upper bars are in compression which for a single bar would be a significant failure point.
The lower bar is mounted to a 4130 tube bent in a half moon, attached to the housing at either end of the center section, and then also in the middle to the center section. It almost looks as if it forms a cradle for the centersection.

Like I said before This is only my opinion, but it is the reason and way it is done on our car.

Bill

mannymen · 05-28-2009, 12:44 PM

Bill can you post a few pics of your setup?

Doug Estabrook · 05-28-2009, 06:46 PM

This is the wheeliebar set-up I was talking about.
Doug

Alan Roehrich · 05-28-2009, 07:14 PM

That's a nice looking set up.

To carry what Bill said further, regular two wheel bars will try to steer the car unless it leaves perfectly flat.

Anthony was in a huge wheelstand at Memphis, and the bars steered him right into the other lane, even though he had the orange wheels that are not supposed to steer the car. At a certain point, the car will no longer be flat and square when it gets really high, and all it takes is a little bias to unload one rear tire or the other slightly. Once it starts, it only gets worse, and fast.

Jesse Knapp · 05-28-2009, 08:51 PM

Thanks for posting the photo. That is a really nice set up. In fact the entire rear is well done. Anyone know who sells this kit?

Al Reed · 05-29-2009, 12:28 AM

Shouldn't the spring/s be on the top bars (as they are under compression, not being pulled/compression)??

05-27-2009, 08:12 PM	#1
Doug Estabrook Junior Member Join Date: Sep 2005 Location: Taunton, MA Posts: 26 Likes: 0 Liked 0 Times in 0 Posts	Single wheelie bar Saw a picture of an A/SA Nova stocker at Maple Grove last weekend that had a single wheelie bar on it (car was built by Ken Keir). What's the advantage of that vs. a pair? Thanks ahead of time, Doug

05-28-2009, 06:48 AM	#2
Bill Grubbs Member Join Date: Oct 2002 Location: Magnolia, Texas Posts: 404 Likes: 1 Liked 460 Times in 61 Posts	Re: Single wheelie bar Now, this is my opinion only . Safety...Have you ever seen a double wheel wheelie bar break or bend just one tube? It gets ugly real fast. At the Memphis Nat. in 2007 A. Bertozzi "lost" one side of his wheelie bars, and crossed the centerline between the tree and the 60' cone. He almost landed on the car in the other lane. Now, when a single wheel wheelie bar is designed correctly and a tube breaks you just come up higher (depending on the car it could be significantly higher). When the integrity of one of the three tubes is compromised the other tubes just fold up (if you are using heim joints). There are some other minor benifits, but safety is the biggest on for me. I love my wife, and want to keep her around as long as I can. Bill Last edited by Bill Grubbs; 05-28-2009 at 01:26 PM.

05-28-2009, 07:52 AM	#3
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,759 Likes: 5 Liked 99 Times in 60 Posts	Re: Single wheelie bar The note from Bill seems reasonable to me. I also have begun to see a few of the single bars. My question, with a 12 bolt rear or other rear with cover, how is the bar attached/centered on the housing? Who is building or selling as a kit? __________________ Larry Woodfin 471W

05-28-2009, 10:58 AM	#4
Bob Pagano VIP Member Join Date: Jun 2002 Location: New Holland, PA Mooresville,NC Posts: 1,163 Likes: 212 Liked 16 Times in 11 Posts	Re: Single wheelie bar I have seen this one but there must be more. https://www.appliedracing.net/produc...9c2e240fb0e74a __________________ Bob Pagano A/SA

05-28-2009, 11:34 AM	#5
Bill Grubbs Member Join Date: Oct 2002 Location: Magnolia, Texas Posts: 404 Likes: 1 Liked 460 Times in 61 Posts	Re: Single wheelie bar The bottom mount on our wheelie bars is for the single tube. It was designed this way since it is in tension, the two upper bars are in compression which for a single bar would be a significant failure point. The lower bar is mounted to a 4130 tube bent in a half moon, attached to the housing at either end of the center section, and then also in the middle to the center section. It almost looks as if it forms a cradle for the centersection. Like I said before This is only my opinion, but it is the reason and way it is done on our car. Bill Last edited by Bill Grubbs; 05-28-2009 at 01:26 PM.

05-28-2009, 12:44 PM	#6
mannymen Senior Member Join Date: Apr 2003 Posts: 728 Likes: 4 Liked 13 Times in 7 Posts	Re: Single wheelie bar Bill can you post a few pics of your setup? __________________ N/A

05-28-2009, 06:46 PM	#7
Doug Estabrook Junior Member Join Date: Sep 2005 Location: Taunton, MA Posts: 26 Likes: 0 Liked 0 Times in 0 Posts	Re: Single wheelie bar This is the wheeliebar set-up I was talking about. Doug Attached Thumbnails

05-28-2009, 07:14 PM	#8
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,916 Likes: 997 Liked 1,047 Times in 276 Posts	Re: Single wheelie bar That's a nice looking set up. To carry what Bill said further, regular two wheel bars will try to steer the car unless it leaves perfectly flat. Anthony was in a huge wheelstand at Memphis, and the bars steered him right into the other lane, even though he had the orange wheels that are not supposed to steer the car. At a certain point, the car will no longer be flat and square when it gets really high, and all it takes is a little bias to unload one rear tire or the other slightly. Once it starts, it only gets worse, and fast. __________________ Alan Roehrich 212A G/S

05-28-2009, 08:51 PM	#9
Jesse Knapp Member Join Date: Jan 2002 Posts: 109 Likes: 0 Liked 0 Times in 0 Posts	Re: Single wheelie bar Thanks for posting the photo. That is a really nice set up. In fact the entire rear is well done. Anyone know who sells this kit? __________________ Jesse Knapp 4899 STK, SS

05-29-2009, 12:28 AM	#10
Al Reed Junior Member Join Date: Mar 2007 Posts: 22 Likes: 2 Liked 2 Times in 2 Posts	Re: Single wheelie bar Shouldn't the spring/s be on the top bars (as they are under compression, not being pulled/compression)??