Bolt in roll bar question

[Ewheels]

EDIT: on second thought, I'll keep my opinions to myself.
(Doing this as I can't delete my comment)

 

[Fabman]

Bolt in roll bar:
It’s only as strong as the sheet metal you attach it to.

 

[302BOB]

When it's your time to check out, you can't argue...........If you're granted a second chance............get smarter about things..............the sooner, the better..............

 

[Ewheels]

Bolt in roll bar:
It’s only as strong as the sheet metal you attach it to.

View attachment 100879
View attachment 100880

Well that's terrifying...
Even with steel plate reinforcements.

 

[Stangra]

...I set up a quick simulation in Autodesk Fusion and was able to see if an impact force was applied that the plate would start bending, and where the sheet metal would tear away from the bolts.

I haven't yet been able to find the best way to replicate a nutsert...

There's a lot of different failure modes to consider depending on the nature of the event triggering a failure. The fastened joint may be exposed to tension loads, compression loads, shear loads, or a combination of these.

...A nut cert has crap for pullout in sheet metal...

A fastened joint is only as good as it's weakest member. Even a grade 8 bolted joint will fail under relatively low load if attached to thin sheet metal. The plate in the nut plate is to distribute forces over a much larger area, like a reinforcing grommet on a sheet of binder paper.

 

[Fabman]

There's a lot of different failure modes to consider depending on the nature of the event triggering a failure. The fastened joint may be exposed to tension loads, compression loads, shear loads, or a combination of these.

A fastened joint is only as good as it's weakest member. Even a grade 8 bolted joint will fail under relatively low load if attached to thin sheet metal. The plate in the nut plate is to distribute forces over a much larger area, like a reinforcing grommet on a sheet of binder paper.

That's why you need a back up plate.
The small amount of engagement that a nutsert has on the back will pull out of sheet metal at very low loading, especially when you figure the main hoop as a fulcrum.

 

[Ludachris]

Bolt in roll bar:
It’s only as strong as the sheet metal you attach it to.

View attachment 100879
View attachment 100880

When you see images like that it scares the hell out of you. Makes me think back to the old days when I ran fixed seats with harness belts and NO rollbar or cage. I know people still do that, but I can't help looking back and feeling like I was extremely fortunate I never rolled and tested my luck. Running cars on a track is dangerous, we all know that. Anything you can do to make it as safe as possible in the rollbar/roll cage department is money well spent. Even then you never know what could happen.

 

[TMSBOSS]

This is why I rarely comment on threads anymore, there’s always that one guy who asks a question then suddenly knows more about the subject than everyone else.

That's kind of brutal. After all It only took him 3 days to figure out how to remove two bolts on the vibration dampener in his way. Shame on you. LOL

 

[Mike_FL]

Bolt in roll bar:
It’s only as strong as the sheet metal you attach it to.

View attachment 100879
View attachment 100880

Wasn’t this an autopower rollcage that bolted to the floor?

This thread is good/ bad timing as I’ve just received my Watson Rollbar.

 

[EF1]

Wasn’t this an autopower rollcage that bolted to the floor?

This thread is good/ bad timing as I’ve just received my Watson Rollbar.

View attachment 100890

I think you are correct on it being an Autopower bar. I remember seeing a writeup on it some time ago.

 

[blacksheep-1]

Wasn’t this an autopower rollcage that bolted to the floor?

This thread is good/ bad timing as I’ve just received my Watson Rollbar.

View attachment 100890

You're good

 

[Albino500]

LOL - There's racecars and then there are street cars. There are roll cages and then there are glorified harness bars (made for street cars to look like a racecar) that are called roll bars. If you're going racing build or buy a racecar and if you want to pretend to be racing by going to club track event then be real on what you have - being a streetcar with a harness bar - there is no safety with a harness/roll bar. Who's kidding who here? Just my opinion.

 

[bronco100]

LOL - There's racecars and then there are street cars. There are roll cages and then there are glorified harness bars (made for street cars to look like a racecar) that are called roll bars. If you're going racing build or buy a racecar and if you want to pretend to be racing by going to club track event then be real on what you have - being a streetcar with a harness bar - there is no safety with a harness/roll bar. Who's kidding who here? Just my opinion.

What does this mean? why does everyone on this forum have this writing style lol

 

[Fabman]

That's kind of brutal. After all It only took him 3 days to figure out how to remove two bolts on the vibration dampener in his way. Shame on you. LOL

I’m such a trouble maker, I should be banned immediately.

 

[Albino500]

What does this mean? why does everyone on this forum have this writing style lol

Sometimes things need to be addressed head-on - look, safety is no joke and should be respected as should racing and testing the extents of a driver's abilities and a vehicle's abilities. If you feel the need to hear someone blow sunshine up your skirt, then make it on something less important and life is important whether it be yours or mine. You are only as safe as the weakest point in all things both in/out of the vehicle, in your head, and the environment for which you choose to do these things. Be safe out there.

 

[bronco100]

Sometimes things need to be addressed head-on - look, safety is no joke and should be respected as should racing and testing the extents of a driver's abilities and a vehicle's abilities. If you feel the need to hear someone blow sunshine up your skirt then make it on something less important and life is important whether it be yours or mine. You are only as safe as the weakest point in all things both in/out of the vehicle and the environment for which you choose to do these things. Be safe out there.

I still don't know what any of that means. Is there like a requirement on this forum that every reply has to sound like a political speech from the 80s?

 

[Fabman]

I still don't know what any of that means. Is there like a requirement on this forum that every reply has to sound like a political speech from the 80s?

People are responding to your attitude. It’s self inflicted.

 

[bronco100]

People are responding to your attitude. It’s self inflicted.

Sir this is a mustang race car forum

 

[Fabman]

Sir this is a mustang race car forum

Being a jerk doesn’t have to be a part of it
This is historically been a respectful productive website with many professional racers/builders/crew members etc. we don’t throw jabs at people, most specifically qualified people trying to share accurate information to benefit other members. Go back and read this thread from beginning to end and tell me if you see anything you could have handled differently.

 

[bronco100]

Being a jerk doesn’t have to be a part of it
This is historically been a respectful productive website with many professional racers/builders/crew members etc. we don’t throw jabs at people, most specifically qualified people trying to share accurate information to benefit other members. Go back and read this thread from beginning to end and tell me if you see anything you could have handled differently.

You're good, I don't know what all that's about though