Is anyone familiar with "Great Stuff"'s compressive properties?

[GeoffM]

If I fill my bumper with great stuff, will it be a better bumper?

[Joshy]

No.

[1badacc]

why would you do that?

[Bullhorn7]

Are you A=I?'s brother?

[GeoffM]

No.

Just... no?

why would you do that?

Because there's only Styrofoam in there. If I put more, then when it gets impacted it should have more bounce.

Are you A=I?'s brother?

Apprentice

[visualpoet]

Here's the deal. That's not your bumper; it's your bumper cover. Your actual bumper is underneath and looks like a big plastic bar. If you start spraying Great Stuff in there, you'll never get the cover back off should you want to in the future (for instance, to replace a headlight housing), it's just going to expand and then you'll need to wait for it to harden so you can cut it off where it shows from behind the cover and there's the distinct possibility that it will deform and perhaps ruin the bumper cover. I've seen it ruin sheet steel body panels and seperate drywall from framing studs because of it's expansive properties.

If your bumper isn't going to pass inspection, something is wrong with your car, it shouldn't bounce, it should absorb the impact, it's there to protect you and the other possible occupants of the vehicle in an impact, not to bounce backwards from it giving you a better chance at whiplash.

[GeoffM]

Here's the deal. That's not your bumper; it's your bumper cover. Your actual bumper is underneath and looks like a big plastic bar. If you start spraying Great Stuff in there, you'll never get the cover back off should you want to in the future (for instance, to replace a headlight housing), it's just going to expand and then you'll need to wait for it to harden so you can cut it off where it shows from behind the cover and there's the distinct possibility that it will deform and perhaps ruin the bumper cover. I've seen it ruin sheet steel body panels and seperate drywall from framing studs because of it's expansive properties.

If your bumper isn't going to pass inspection, something is wrong with your car, it shouldn't bounce, it should absorb the impact, it's there to protect you and the other possible occupants of the vehicle in an impact, not to bounce backwards from it giving you a better chance at whiplash.

Michigan doesn't have inspection, and there's nothing wrong with it. I was trying to improve it. I guess it's not a good idea

[HondaB18]

If I fill my bumper with great stuff, will it be a better bumper?

It won't be a better bumper, it will be a great bumper.

[visualpoet]

It won't be a better bumper, it will be a great bumper.

I refer to my earlier post as a rebuttal.

[TypeG]

seems like a bad idea. later.

[Accrdwgnguy]

Honda put a lot of R+D time into those bumpers design, not to mention crash tests. Leave it be

[JDM_CB7_TX]

Are you A=I?'s brother?

This!

[Jon]

Our CBs have a bumper "face", absorber, and beam.
The face is the plastic bumper cover.
The absorber is the styrofoam.
And the beam, well kind of obvious.

[h22sparkle]

Our CBs have a bumper "face", absorber, and beam.
The face is the plastic bumper cover.
The absorber is the styrofoam.
And the beam, well kind of obvious.

So the impact absorbtion foam is diagram 12 and the impact crashbar beam is diagram 6 correct?which is completely covered by diagram 2.

[Jon]

So the impact absorbtion foam is diagram 12 and the impact crashbar beam is diagram 6 correct?which is completely covered by diagram 2.

Yep.