Thanks: 0
Likes: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 6 of 6
Thread: Stitch Weld ??
-
5th July 2012, 09:24 PM #1New Member
- Join Date
- Feb 2009
- Location
- newcastle
- Posts
- 9
Stitch Weld ??
I intend making a Harness Bar for a car (not for normal road use) and not part of a roll cage. The car is a hatch, so there is no rear shelf with seat belt anchor points. The bar will mount between the rear strut towers .
I need to weld some black pipe 25 mm NB (33.7 outside dia) with 3.2 mm wall thickness inside some equal angle (25 x 25 x 3). The bar will be 1200 mm long. Is stitch welding along the angle edges the way to go? If so, how long for each stitch and how far apart should the welds be?
Thanks for any help!
-
5th July 2012 09:24 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
5th July 2012, 10:53 PM #2
Given the pipe sits in the angle without any appreciable gap- a weld 25mm miss 50mm weld 25mm should do you.
Grahame
-
5th July 2012, 11:07 PM #3Novice
- Join Date
- May 2012
- Location
- Australia
- Posts
- 24
Consider making it bolt in so that you can sandwich the bodywork.
Depending on what you're racing and where there might be issues with scrutineers and welding the shock towers together.
Roll cages are made from seamless tube, ideally your harness bar should be too.
This one only cost $250 to have engineered, manufactured and installed by a reputable roll cage manufacturer, Brown Davis.
-
6th July 2012, 01:13 AM #4New Member
- Join Date
- Feb 2009
- Location
- newcastle
- Posts
- 9
Grahame - thanks for the info, exactly what I was after.
PJ - thanks for the photos - internet search failed to give anything as good as yours to work from. I will contact Brown Davis. All the forums suggested the bars were $400 plus. If I attach the harness to the roll cage I am obliged to have CDS/CDW etc, but not attaching it to the roll cage the requirements are a lot less. The car will be used for Club Khanacross. I am/was going to attach the bar to the car by bolting to the bodywork like your photos.
Thanks Guys.
-
8th July 2012, 04:16 PM #5GOLD MEMBER
- Join Date
- Sep 2010
- Location
- Lebrina
- Posts
- 1,099
I would offer one word of advice, that being to know, not think, that you are doing.
Any component that restrains an occupant must be of a suitably high standrd so that it will not fail.
Don't be tempted to cut corners, as others have said roll frames etc are made from seamless tube for a reason and I am uneasy that you seem to be trying to go for the lowest standard you can.
Study the relevant rule book, (CAMS regs?) and go from there, as far as I am aware common old CHS is not acceptable under any recognised code (nor should it be).
Your life depends on this harness bar, what value do you put on your life?
-
8th July 2012, 06:18 PM #6Senior Member
- Join Date
- Jul 2008
- Location
- Sydney
- Posts
- 244
Khanacross is a relatively low speed/low risk sport and the full harness is more to keep the driver stable whilst driving than offer extreme protection in the event of an accident.
From what I can remember you don't need a roll cage in an enclosed car.
Similar Threads
-
GIS - Using Stitch and Glue
By Rolf in forum Michael Storer Wooden Boat PlansReplies: 3Last Post: 4th March 2010, 12:49 PM -
Stitch and Glue?
By stonedpirate in forum BOAT BUILDING / REPAIRINGReplies: 6Last Post: 9th December 2009, 10:26 AM -
Stitch and glue no 2
By Arron in forum BOAT BUILDING / REPAIRINGReplies: 1Last Post: 24th August 2009, 12:17 PM -
S&G, Glued Lap Ply, Lap Stitch???
By MikeyRoberts in forum BOAT BUILDING / REPAIRINGReplies: 19Last Post: 23rd May 2008, 09:26 PM -
A stitch in time...
By manoftalent in forum NOTHING AT ALL TO DO WITH WOODWORKReplies: 4Last Post: 6th October 2007, 03:04 PM