Cheap jacking solution
Melting Slicks
Joined: Nov 2010
Posts: 2,216
Likes: 112
From: Michigan
I'd be afraid of a crack with a span that wide but then I don't see why you couldn't make the span less with a narrower jack or even add small side strips on top to help support the load some, like he did for stops either side of the tire.
edit: even a strip of metal angle iron on either side would make me feel a bit better.
edit: or even a thin metal plate on the under side so some jacks wouldn't damage the wood and add potential fail points and strengthen. Still I'm no wood expert and you would have to consider more holes as the same chance for failure points.
Making a set of wood cribs, ones that you can add/stack-on to for when you need a lot of room under a car has been on my to-do-list. I had planed on making a base to put under the jack to get the height needed for the 2nd step but may try to adapt the jack under crib method shown here.
Tall jack stands to reach a suv/truck frame may not be available in his area or ridiculously priced.
edit: even a strip of metal angle iron on either side would make me feel a bit better.
edit: or even a thin metal plate on the under side so some jacks wouldn't damage the wood and add potential fail points and strengthen. Still I'm no wood expert and you would have to consider more holes as the same chance for failure points.
Making a set of wood cribs, ones that you can add/stack-on to for when you need a lot of room under a car has been on my to-do-list. I had planed on making a base to put under the jack to get the height needed for the 2nd step but may try to adapt the jack under crib method shown here.
Tall jack stands to reach a suv/truck frame may not be available in his area or ridiculously priced.
Last edited by BOOT77; Aug 13, 2016 at 07:23 AM.
Le Mans Master
Joined: Jul 2004
Posts: 6,221
Likes: 697
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
Racer
Joined: Oct 2011
Posts: 388
Likes: 38
From: Madison CT
[QUOTE=Tom400CFI]How do you figure that? Jack stands were engineered specifically for that purpose. Note that I said "purpose"...not capacity. Both can have way more than enough capacity (it would seem from your calcs) but the car can still roll on wood, the wood can topple...it all depends on how someone built their cribbing...which is a variable. Stands are engineered for both capacity and purpose. You put them under the car in the proper location, on level ground....it's pretty hard to mess it up.[QUOTE]
Google jack stand failure, it happens.
http://www.914world.com/bbs2/index.p...pic=70117&st=0
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Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Google jack stand failure, it happens.
http://www.914world.com/bbs2/index.p...pic=70117&st=0
http://www.914world.com/bbs2/index.p...pic=70117&st=0
What are the statistics for failed jack stands vs. failed home-made jigs? That would be more meaningful data (to me, at least).
