Round Tubing vs Square Tubing

Stephen & Horace Johnson · 11-06-2008, 12:31 AM

Have any of you racers lost any weight redoing your car, goin from Sq tubing to Round Tubing? How much weight did you lose? Is there any weight reduction at all goin from Sq tubing to Round tubeing? Also I would like to why there is a weight reduction if this is true? thanks classracer

Stephen Johnson #2162
Horace Johnson #2167
SS/D 427 Ford Fairlane NHRA-IHRA

Tom Goldman · 11-06-2008, 10:04 AM

Unless you are going to go from mild steel to chromemoly tubing the weight savings will be extremly small. ............When you go to CM tubing the wall thickness can be slightly smaller on the box tube, depending on the chassis spec you are building to. ........058" box vs. .083" for tube.......I'm assuming you are more concernad with the tail section of the chassis,and not the frame connector area. ......Every builder has a preference ,altho some cars lend themselves more to one or the other. .....If I can find it I'll post a link to a site that has charts with all the weights per foot of various size tubing. .......TOM

Stephen & Horace Johnson · 11-06-2008, 01:43 PM

thank you Tom, I'd appreciate it

Tom Goldman · 11-06-2008, 03:21 PM

http://tottentubes.com click on stock list for the engineering data

11-06-2008, 12:31 AM	#1
Stephen & Horace Johnson Senior Member Join Date: Jul 2007 Posts: 963 Likes: 341 Liked 161 Times in 52 Posts	Round Tubing vs Square Tubing Have any of you racers lost any weight redoing your car, goin from Sq tubing to Round Tubing? How much weight did you lose? Is there any weight reduction at all goin from Sq tubing to Round tubeing? Also I would like to why there is a weight reduction if this is true? thanks classracer Stephen Johnson #2162 Horace Johnson #2167 SS/D 427 Ford Fairlane NHRA-IHRA

11-06-2008, 01:43 PM	#3
Stephen & Horace Johnson Senior Member Join Date: Jul 2007 Posts: 963 Likes: 341 Liked 161 Times in 52 Posts	Re: Round Tubing vs Square Tubing thank you Tom, I'd appreciate it

11-06-2008, 03:21 PM	#4
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,476 Likes: 889 Liked 882 Times in 236 Posts	Re: Round Tubing vs Square Tubing http://tottentubes.com click on stock list for the engineering data __________________ Tom Goldman 1500 SG , 1506 STK Last edited by Tom Goldman; 11-06-2008 at 03:27 PM.

11-06-2008, 10:04 AM	#2
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,476 Likes: 889 Liked 882 Times in 236 Posts	Re: Round Tubing vs Square Tubing Unless you are going to go from mild steel to chromemoly tubing the weight savings will be extremly small. ............When you go to CM tubing the wall thickness can be slightly smaller on the box tube, depending on the chassis spec you are building to. ........058" box vs. .083" for tube.......I'm assuming you are more concernad with the tail section of the chassis,and not the frame connector area. ......Every builder has a preference ,altho some cars lend themselves more to one or the other. .....If I can find it I'll post a link to a site that has charts with all the weights per foot of various size tubing. .......TOM __________________ Tom Goldman 1500 SG , 1506 STK