wickford90

Well-Known Member

• Jan 28, 2011

• #1

Going to fit my new winch bumper over weekend, is it ok to use existing bumper bolts of should i replace with some stronger ones.

 

wiltshire landyman

I’m back

• Jan 28, 2011

• #2

upto you both options are fine,just make sure you use some copper grease so you can get the feckers orf if ya need to at a later date

 

wickford90

Well-Known Member

• Jan 28, 2011

• #3

wiltshire landyman said:

upto you both options are fine,just make sure you use some copper grease so you can get the feckers orf if ya need to at a later date

Click to expand...

Thanks.

 

hext

Active Member

• Feb 1, 2011

• #4

I think its best if you do, the one's I replaced were fine but thread was worn/covered crap..

I would definatly get some new retaining clips/nuts as my old one's where wafer thin and rusted too

 

khaos

New Member

• Feb 2, 2011

• #5

I wouldn't put bolts on stronger than the chassis. I know which I would rather break.

 

P

paul_c

New Member

• Feb 2, 2011

• #6

You'll probably find the bumper includes another set of brackets, making 8 bolts in total securing it, instead of the original bumper's 4 bolts. In theory, the winch should stall before you're in any danger of the bumper-chassis bolts failing.

 

Mr Noisy

Coming in your ears.

• Feb 3, 2011

• #7

i fit new bolts where possible. its unlikely that your winch would snap the bolts, but i did see a snatch recovery once that ripped the winch and bumpewr clean off, due to poor securing.

worth making sure its right - but standard bolts will probably be ok.

up to you really!

 

P

paul_c

New Member

• Feb 3, 2011

• #8

If its the 4x standard M10 bolts, then a back of the envelope calculation suggests they'd support up to 6.4 tons pull. With most winches being around the 12,000lb mark, thats perilously close to the strength limit (2.2 lbs per kg, 1000kg per ton). So if you did a double pull (ie using a pulley block, resecured back to the bumper) you could easily exceed the strength limit of the bolts with a hard enough pull (the actual force applied to the bolts depends on other factors such as what you're anchored to, and what you're pulling/recovering , and where from). With the 8 bolts, the strength is doubled so you're safe on a double line pull.