|  Get bent, Building a better mousetrap | 
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|  Get bent, Building a better mousetrap | 
|  Nov 25 2008, 07:03 PM 
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| Nothing says 'I love you.' like a box of Hydroshoks       Group: Moderators Posts: 5,284 Joined: 23-December 03 From: Granbury, TX Member No.: 4  | 
				IN an effort to lose weight off the race car, I want to cut the SFCs off. However, I use them to jack up the car. After seeing several "pro" teams use a receiver/stab setup off the roll cage, I began fabricating this kind of rig. I used 1" square tubing as the receiver and gusseted the hell out of it to keep deflection to a minimum. I have some 3/4" solid bar stock I was using as the stab. After welding the receiver portion to the cage and mocking up the stab with plenty of gussets, I tested the rig and ... it bent. (IMG:http://www.frrax.com/rrforum/style_emoticons/default/mad.gif) 3/4" solid bar stock bent like a pretzel. And it yielded right at the end of the gusseting. Think of it as a pry bar. I opened the door and placed the jack on the end of the receiver and lifted the car without an issue ... So help me out here ... what can I do to the bar stock I have to increase it's strength or what kind of 3/4" bar stock can I source that will lift 1500lbs? | 
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|  Nov 26 2008, 06:57 PM 
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| Experienced Member    Group: Advanced Members Posts: 1,766 Joined: 10-April 04 From: New Orleans, LA Member No.: 303  | 
				Well, my solution isn't nearly as cool looking as a stab/receiver combo. But, it's light and it works. I simply welded a piece of 1/4" thick plate to the rear of the framerail under the floorboards. The part that has the factory tiedown hole in it. There were some concerns about the holes elongating with use (I use them for tying the car down on the trailer). Now, I just stick my jack under there and use it to jack the car. Both tires come up within 3-4 pumps. And, i don't have to worry about finding that receiver when doing a quick pit (or leaving it at home). | 
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|  Dec 9 2008, 04:58 AM 
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| newbie Group: Advanced Members Posts: 28 Joined: 30-November 07 From: silicon valley Member No.: 2,026  | 
				wow, what do you guys think about these little pins? (IMG:http://farm2.static.flickr.com/1359/593330953_52b0626d4e_o.jpg) (IMG:http://farm2.static.flickr.com/1312/593331075_4673996ff6_o.jpg) you can see where the pin comes in through the rocker here (IMG:http://farm2.static.flickr.com/1077/593331229_a61a9d143c_o.jpg) is this common on lighter weight cars? seeing how close the jack is to the body, they reduced the moment arm a whole lot, but i wonder if stronger pins might work, as long as you keep the jack close to the body? also, it's a mitsubishi galant i think, here's the flicker set http://flickr.com/photos/larryparker/sets/72157600459014007/ | 
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 mitchntx   Get bent   Nov 25 2008, 07:03 PM
 mitchntx   Get bent   Nov 25 2008, 07:03 PM 
  FBody383   QUOTE (mitchntx)So help me out here ... what can I...   Nov 25 2008, 07:51 PM
 FBody383   QUOTE (mitchntx)So help me out here ... what can I...   Nov 25 2008, 07:51 PM 
  StanIROCZ   QUOTE (mitchntx @ Nov 25 2008, 02:03 PM) ...   Nov 25 2008, 07:53 PM
 StanIROCZ   QUOTE (mitchntx @ Nov 25 2008, 02:03 PM) ...   Nov 25 2008, 07:53 PM 
  mitchntx   The stab ...
The stab fully inserted.
Afte...   Nov 25 2008, 08:13 PM
 mitchntx   The stab ...
The stab fully inserted.
Afte...   Nov 25 2008, 08:13 PM
 
  StanIROCZ   I assumed a 6" lever arm and 1600 lbs of load...   Nov 25 2008, 08:34 PM
 StanIROCZ   I assumed a 6" lever arm and 1600 lbs of load...   Nov 25 2008, 08:34 PM

 
  StanIROCZ   QUOTE (StanIROCZ @ Nov 25 2008, 03:34 PM)...   Nov 25 2008, 08:36 PM
 StanIROCZ   QUOTE (StanIROCZ @ Nov 25 2008, 03:34 PM)...   Nov 25 2008, 08:36 PM
 
  RichardP   QUOTE (mitchntx @ Nov 25 2008, 02:13 PM) ...   Nov 25 2008, 09:13 PM
 RichardP   QUOTE (mitchntx @ Nov 25 2008, 02:13 PM) ...   Nov 25 2008, 09:13 PM

 
  mitchntx   QUOTE (RichardP @ Nov 25 2008, 03:13 PM) ...   Nov 26 2008, 12:42 AM
 mitchntx   QUOTE (RichardP @ Nov 25 2008, 03:13 PM) ...   Nov 26 2008, 12:42 AM

 
  StanIROCZ   QUOTE (RichardP @ Nov 25 2008, 04:13 PM) ...   Nov 26 2008, 02:15 AM
 StanIROCZ   QUOTE (RichardP @ Nov 25 2008, 04:13 PM) ...   Nov 26 2008, 02:15 AM


 
  mitchntx   QUOTE (StanIROCZ @ Nov 25 2008, 08:15 PM)...   Nov 26 2008, 02:57 AM
 mitchntx   QUOTE (StanIROCZ @ Nov 25 2008, 08:15 PM)...   Nov 26 2008, 02:57 AM 
  mitchntx   Thanks, Stan .... Learning by doing, I guess ... g...   Nov 25 2008, 08:36 PM
 mitchntx   Thanks, Stan .... Learning by doing, I guess ... g...   Nov 25 2008, 08:36 PM 
  rmackintosh   I used small trailer hitch recievers and made a st...   Nov 25 2008, 09:23 PM
 rmackintosh   I used small trailer hitch recievers and made a st...   Nov 25 2008, 09:23 PM 
  rmackintosh   Here is the stab.   As stated it is a small sized ...   Nov 25 2008, 09:40 PM
 rmackintosh   Here is the stab.   As stated it is a small sized ...   Nov 25 2008, 09:40 PM 
  JKnight   Can't find a pic at the moment, but JR Smith o...   Nov 26 2008, 12:42 AM
 JKnight   Can't find a pic at the moment, but JR Smith o...   Nov 26 2008, 12:42 AM 
  rmackintosh   Not THAT much heavier.   Granted it is much thicke...   Nov 26 2008, 01:41 AM
 rmackintosh   Not THAT much heavier.   Granted it is much thicke...   Nov 26 2008, 01:41 AM
 
  StanIROCZ   QUOTE (rmackintosh @ Nov 25 2008, 08:41 P...   Nov 26 2008, 02:26 AM
 StanIROCZ   QUOTE (rmackintosh @ Nov 25 2008, 08:41 P...   Nov 26 2008, 02:26 AM

 
  rmackintosh   QUOTE (StanIROCZ @ Nov 25 2008, 09:26 PM)...   Nov 26 2008, 03:17 AM
 rmackintosh   QUOTE (StanIROCZ @ Nov 25 2008, 09:26 PM)...   Nov 26 2008, 03:17 AM


 
  StanIROCZ   QUOTE (rmackintosh @ Nov 25 2008, 10:17 P...   Nov 26 2008, 03:31 AM
 StanIROCZ   QUOTE (rmackintosh @ Nov 25 2008, 10:17 P...   Nov 26 2008, 03:31 AM



 
  rmackintosh   QUOTE (StanIROCZ @ Nov 25 2008, 10:31 PM)...   Nov 26 2008, 04:11 AM
 rmackintosh   QUOTE (StanIROCZ @ Nov 25 2008, 10:31 PM)...   Nov 26 2008, 04:11 AM 
  nape   You can accomplish the same thing with about 8...   Nov 26 2008, 02:54 AM
 nape   You can accomplish the same thing with about 8...   Nov 26 2008, 02:54 AM 
  Blainefab   I fabbed jack points for the C4 I built for Dr Gin...   Nov 26 2008, 12:53 PM
 Blainefab   I fabbed jack points for the C4 I built for Dr Gin...   Nov 26 2008, 12:53 PM
 
  rmackintosh   QUOTE (Blainefab @ Nov 26 2008, 07:53 AM)...   Nov 26 2008, 05:23 PM
 rmackintosh   QUOTE (Blainefab @ Nov 26 2008, 07:53 AM)...   Nov 26 2008, 05:23 PM

 
  StanIROCZ   QUOTE (billy_ocean @ Dec 8 2008, 11:58 PM...   Jan 7 2009, 12:35 PM
 StanIROCZ   QUOTE (billy_ocean @ Dec 8 2008, 11:58 PM...   Jan 7 2009, 12:35 PM 
  trackbird   You wouldn't catch me under that car sitting o...   Dec 9 2008, 05:04 AM
 trackbird   You wouldn't catch me under that car sitting o...   Dec 9 2008, 05:04 AM
 
  CMC #37   QUOTE (trackbird @ Dec 9 2008, 12:04 AM) ...   Dec 9 2008, 05:40 AM
 CMC #37   QUOTE (trackbird @ Dec 9 2008, 12:04 AM) ...   Dec 9 2008, 05:40 AM|   | 
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